/* =========================================================
   desktopchill learn — v12 additions
   Wallpaper rewards (chests, collection cards), VIP rings,
   friends rail, notifications, duels, quiz topics, light mode.
   ========================================================= */
:root { --rar-c: #A9BDB2; --rar-r: #4FA3FF; --rar-e: #B46BFF; --rar-l: #FFC94A; --rail-w: 300px; }

/* ---------- path chest v2 ---------- */
.ch2 { filter: drop-shadow(0 8px 12px rgba(0, 0, 0, .35)); }
.ch2 .rays { fill: #FFE08A; opacity: 0; transform-origin: 40px 36px; }
.ch2 .inner { opacity: 0; transition: opacity .3s; }
.ch2 .lid2 { transform-origin: 10px 34px; transition: transform .5s var(--spring); }
.ch2.open .lid2 { transform: rotate(-24deg) translate(-3px, -4px); }
.ch2.open .inner { opacity: 1; }
.ch2.open .rays { opacity: .35; animation: spin 12s linear infinite; }
.ch2 .gem { transition: filter .3s; }
.ch2.t3 .gem { filter: hue-rotate(-140deg) saturate(1.6); }
.ch2.t2 .gem { filter: saturate(.3) brightness(1.4); }
.cp.ready .ch2 { animation: wiggle 1.6s ease-in-out infinite; filter: drop-shadow(0 0 18px rgba(255, 201, 74, .65)); }
.cp.ready .ch2 .rays { opacity: .7; animation: spin 6s linear infinite; }
.cp.upg .ch2 { filter: drop-shadow(0 0 20px rgba(180, 107, 255, .7)); }
.cp:not(.ready):not(.opened) .ch2 { filter: drop-shadow(0 8px 12px rgba(0, 0, 0, .35)) saturate(.35) brightness(.75); }
.cp.popping .ch2 .lid2, .dchest.popping .ch2 .lid2 { transform: rotate(-34deg) translate(-6px, -9px); }
.cp-tag { position: absolute; right: -4px; top: 2px; min-width: 24px; height: 24px; padding: 0 6px; border-radius: 12px; display: grid; place-items: center; font-weight: 900; font-size: .72rem; box-shadow: 0 4px 10px rgba(0, 0, 0, .35); }
.cp-tag svg { width: 13px; height: 13px; }
.cp-tag.up { background: linear-gradient(140deg, #E9D5FF, var(--rar-e)); color: #2A0C4A; animation: nodebob 1.4s ease-in-out infinite; }
.cp-tag.miss { background: rgba(10, 16, 14, .85); color: var(--ink-2); border: 1px solid var(--line-2); }
.boss-walls { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-top: 10px; }

/* ---------- 3D chest (reward overlay) ---------- */
.c3d { --w: 132px; --h: 74px; --d: 88px; --lh: 30px; --wood1: #B8733A; --wood2: #7A4220; --wood3: #4C2610; --trim: #FFC94A; --trim2: #B9860F; --glow: 255, 201, 74;
  position: relative; width: 240px; height: 200px; perspective: 900px; margin: 0 auto; }
.c3d.t-silver { --trim: #E8EEF0; --trim2: #8C9AA3; }
.c3d.t-gold { --wood1: #C98A3E; --wood2: #8A5420; --trim: #FFE08A; --trim2: #D49B1A; }
.c3d.t-boss { --wood1: #5B3A8A; --wood2: #33205A; --wood3: #1B1033; --trim: #FFC94A; --trim2: #B9860F; --glow: 200, 140, 255; }
.c3-shadow { position: absolute; left: 50%; bottom: 18px; width: 170px; height: 26px; transform: translateX(-50%); border-radius: 50%; background: radial-gradient(closest-side, rgba(0, 0, 0, .55), transparent); }
.c3-rot { position: absolute; left: 50%; top: 62%; width: 0; height: 0; transform-style: preserve-3d; transform: rotateX(-20deg) rotateY(-30deg); animation: c3float 3.2s ease-in-out infinite; }
@keyframes c3float { 50% { transform: rotateX(-20deg) rotateY(-24deg) translateY(-6px); } }
.c3-box, .c3-lid { position: absolute; left: 0; top: 0; width: 0; height: 0; transform-style: preserve-3d; }
.c3d .f { position: absolute; display: block; box-sizing: border-box; border: 3px solid var(--trim2); background: linear-gradient(180deg, var(--wood1), var(--wood2)); }
.c3d .f::before { content: ""; position: absolute; inset: 0; background: repeating-linear-gradient(180deg, transparent 0 17px, rgba(0, 0, 0, .18) 17px 19px); }
.c3-box .front, .c3-box .back { width: var(--w); height: var(--h); left: calc(var(--w) / -2); top: calc(var(--h) / -2); }
.c3-box .front { transform: translateZ(calc(var(--d) / 2)); }
.c3-box .back { transform: rotateY(180deg) translateZ(calc(var(--d) / 2)); filter: brightness(.6); }
.c3-box .left, .c3-box .right { width: var(--d); height: var(--h); left: calc(var(--d) / -2); top: calc(var(--h) / -2); filter: brightness(.78); }
.c3-box .right { transform: rotateY(90deg) translateZ(calc(var(--w) / 2)); }
.c3-box .left { transform: rotateY(-90deg) translateZ(calc(var(--w) / 2)); }
.c3-box .bottom { width: var(--w); height: var(--d); left: calc(var(--w) / -2); top: calc(var(--d) / -2); transform: rotateX(-90deg) translateZ(calc(var(--h) / 2)); background: var(--wood3); }
/* đai kim loại + ổ khoá ở mặt trước */
.c3-box .front { background: linear-gradient(90deg, transparent 14%, var(--trim) 14% 21%, transparent 21% 79%, var(--trim) 79% 86%, transparent 86%), linear-gradient(180deg, var(--wood1), var(--wood2)); box-shadow: inset 0 -6px 0 rgba(0, 0, 0, .25); }
.c3-box .front::after { content: ""; position: absolute; left: 50%; top: -3px; width: 30px; height: 34px; transform: translateX(-50%); border-radius: 0 0 14px 14px; background: radial-gradient(circle at 50% 46%, #CFFFF7 0 3px, #2DD4BF 4px 8px, transparent 9px), linear-gradient(160deg, #FFF3B0, var(--trim) 50%, var(--trim2)); box-shadow: 0 2px 6px rgba(0, 0, 0, .4); }
.c3d.t-gold .c3-box .front::after { background: radial-gradient(circle at 50% 46%, #FFE1E1 0 3px, #FF4D6D 4px 8px, transparent 9px), linear-gradient(160deg, #FFF3B0, var(--trim) 50%, var(--trim2)); }
.c3d.t-boss .c3-box .front::after { background: radial-gradient(circle at 50% 46%, #F3E8FF 0 3px, #B46BFF 4px 8px, transparent 9px), linear-gradient(160deg, #FFF3B0, var(--trim) 50%, var(--trim2)); }
.c3-lid { transform: translateY(calc(var(--h) / -2)); transform-origin: 0 0 calc(var(--d) / -2); transition: transform .6s cubic-bezier(.3, 1.6, .5, 1) .55s; }
.c3-lid .front, .c3-lid .back { width: var(--w); height: var(--lh); left: calc(var(--w) / -2); top: calc(var(--lh) / -2); }
.c3-lid .front { transform: translateY(calc(var(--lh) / -2)) translateZ(calc(var(--d) / 2)); background: linear-gradient(90deg, transparent 14%, var(--trim) 14% 21%, transparent 21% 79%, var(--trim) 79% 86%, transparent 86%), linear-gradient(180deg, var(--wood1), var(--wood2)); }
.c3-lid .back { transform: translateY(calc(var(--lh) / -2)) rotateY(180deg) translateZ(calc(var(--d) / 2)); filter: brightness(.6); }
.c3-lid .left, .c3-lid .right { width: var(--d); height: var(--lh); left: calc(var(--d) / -2); top: calc(var(--lh) / -2); filter: brightness(.78); }
.c3-lid .right { transform: translateY(calc(var(--lh) / -2)) rotateY(90deg) translateZ(calc(var(--w) / 2)); }
.c3-lid .left { transform: translateY(calc(var(--lh) / -2)) rotateY(-90deg) translateZ(calc(var(--w) / 2)); }
.c3-lid .top { width: var(--w); height: var(--d); left: calc(var(--w) / -2); top: calc(var(--d) / -2); transform: translateY(calc(var(--lh) * -1)) rotateX(90deg); background: linear-gradient(90deg, transparent 14%, var(--trim) 14% 21%, transparent 21% 79%, var(--trim) 79% 86%, transparent 86%), linear-gradient(0deg, var(--wood2), var(--wood1)); }
.c3-light { position: absolute; width: var(--w); height: var(--d); left: calc(var(--w) / -2); top: calc(var(--d) / -2); transform: translateY(calc(var(--h) / -2 + 2px)) rotateX(90deg); background: radial-gradient(closest-side, rgba(255, 250, 220, 1), rgba(var(--glow), .9) 45%, rgba(var(--glow), 0)); opacity: 0; transition: opacity .3s .7s; }
.c3-beams { position: absolute; left: 50%; top: 42%; width: 420px; height: 420px; margin: -210px 0 0 -210px; border-radius: 50%; background: repeating-conic-gradient(rgba(var(--glow), .45) 0 9deg, transparent 9deg 24deg); -webkit-mask: radial-gradient(closest-side, #000 20%, transparent 72%); mask: radial-gradient(closest-side, #000 20%, transparent 72%); opacity: 0; transform: scale(.4); transition: opacity .5s .7s, transform .9s .7s var(--ease); z-index: -1; pointer-events: none; }
.c3d.open .c3-rot { animation: c3shake .12s linear 4, c3float 3.2s ease-in-out .6s infinite; }
@keyframes c3shake { 0%, 100% { transform: rotateX(-20deg) rotateY(-30deg); } 25% { transform: rotateX(-20deg) rotateY(-30deg) rotateZ(4deg); } 75% { transform: rotateX(-20deg) rotateY(-30deg) rotateZ(-4deg); } }
.c3d.open .c3-lid { transform: translateY(calc(var(--h) / -2)) rotateX(108deg); }
.c3d.open .c3-light { opacity: 1; }
.c3d.open .c3-beams { opacity: 1; transform: scale(1); animation: spin 18s linear 1.2s infinite; }

/* ---------- reveal overlay ---------- */
.rv-ovl { align-items: start; overflow-y: auto; }
.rv-ovl .ovl-in { max-width: 760px; margin: max(4vh, 16px) auto; padding: 46px 20px 24px; background: radial-gradient(ellipse at 50% 0%, rgba(255, 201, 74, .14), transparent 60%), rgba(12, 18, 16, .94); overflow: visible; }
.rv-wrap { display: grid; justify-items: center; gap: 6px; }
.rv-wrap.boss .rv-head small { color: var(--rar-e); }
.rv-chest { margin-top: -40px; }
.rv-head { text-align: center; display: grid; gap: 2px; margin-top: -8px; position: relative; }
.rv-head small { font-weight: 800; font-size: .76rem; color: var(--gold); letter-spacing: .02em; }
.rv-head h2 { font-family: var(--f-display); font-weight: 400; font-size: clamp(1.8rem, 5vw, 2.5rem); line-height: 1.05; }
.rv-stars { display: flex; justify-content: center; gap: 4px; }
.rv-stars i { width: 26px; height: 26px; color: rgba(255, 255, 255, .2); }
.rv-stars i svg { width: 100%; height: 100%; fill: currentColor; }
.rv-stars i.on { color: var(--gold); filter: drop-shadow(0 0 8px rgba(255, 201, 74, .7)); animation: popnode .5s var(--spring) both; }
.rv-stars i:nth-child(2) { animation-delay: .12s; } .rv-stars i:nth-child(3) { animation-delay: .24s; }
.rv-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 250px)); gap: 14px; justify-content: center; width: 100%; margin: 10px 0 4px; perspective: 1000px; }
.rv-cards.n3 { grid-template-columns: repeat(3, minmax(0, 220px)); }
.rv-hint { max-width: 52ch; text-align: center; color: var(--ink-2); font-size: .9rem; }
.rv-hint.miss { color: #FFD7A8; }
.rv-xp { font-weight: 800; color: var(--gold); font-size: 1.1rem; }
.rv-xp small { color: var(--muted); font-weight: 600; font-size: .78rem; }
.rv-act .btn { min-width: 220px; }
.wcard.rv { opacity: 0; animation: rvin .8s var(--d, 1s) cubic-bezier(.2, 1.25, .4, 1) forwards; }
.wcard.rv.before { animation-duration: .5s; }
@keyframes rvin { 0% { opacity: 0; transform: translateY(-120px) scale(.3) rotateY(180deg); } 55% { opacity: 1; transform: translateY(10px) scale(1.04) rotateY(20deg); } 100% { opacity: 1; transform: none; } }
.wcard.rv.s-missed { animation-name: rvmiss; }
@keyframes rvmiss { 0% { opacity: 0; transform: translateY(-120px) scale(.3); } 60% { opacity: 1; transform: translateY(6px) scale(1.02); } 70% { transform: translateX(-6px); } 80% { transform: translateX(5px); } 90% { transform: translateX(-3px); } 100% { opacity: 1; transform: none; } }
.wcard.rv.is-new::after { content: ""; position: absolute; inset: -30px; z-index: -1; border-radius: 30px; background: radial-gradient(closest-side, rgba(var(--rgl, 255, 201, 74), .55), transparent); animation: rvglow 2.4s calc(var(--d, 1s) + .4s) ease-out both; }
@keyframes rvglow { 0% { opacity: 0; transform: scale(.4); } 30% { opacity: 1; transform: scale(1.1); } 100% { opacity: .35; transform: scale(1); } }
@media (max-width: 560px) { .rv-cards, .rv-cards.n3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .rv-cards.n3 .wcard:last-child { grid-column: 1 / -1; justify-self: center; width: 60%; } .c3d { transform: scale(.85); margin: -14px auto -10px; } }

/* ---------- wallpaper cards ---------- */
.wcard { --rc: var(--rar-c); --rgl: 169, 189, 178; position: relative; display: block; width: 100%; text-align: left; border-radius: 14px; transform: perspective(800px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)); transition: transform .15s ease, box-shadow .25s; transform-style: preserve-3d; }
.wcard.r-rare { --rc: var(--rar-r); --rgl: 79, 163, 255; }
.wcard.r-epic { --rc: var(--rar-e); --rgl: 180, 107, 255; }
.wcard.r-legendary { --rc: var(--rar-l); --rgl: 255, 201, 74; }
.wc-in { position: relative; display: block; border-radius: 14px; padding: 3px; overflow: hidden; background: linear-gradient(150deg, color-mix(in srgb, var(--rc) 85%, #fff), var(--rc) 40%, color-mix(in srgb, var(--rc) 55%, #000)); box-shadow: 0 10px 24px rgba(0, 0, 0, .35); }
.wc-media { position: relative; display: block; aspect-ratio: 16 / 9; border-radius: 11px; overflow: hidden; background: #0c1513; }
.wc-media img, .wc-media video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.wc-media video { opacity: 0; transition: opacity .35s; }
.wc-media video.on { opacity: 1; }
.wc-cap { position: absolute; left: 3px; right: 3px; bottom: 3px; padding: 18px 10px 7px; border-radius: 0 0 11px 11px; background: linear-gradient(180deg, transparent, rgba(0, 0, 0, .78)); display: grid; line-height: 1.2; color: #fff; pointer-events: none; }
.wc-cap b { font-size: .86rem; font-weight: 800; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; text-shadow: 0 1px 6px rgba(0, 0, 0, .6); }
.wc-cap small { display: flex; align-items: center; gap: 5px; font-size: .68rem; font-weight: 700; color: rgba(255, 255, 255, .78); }
.rd { width: 7px; height: 7px; border-radius: 50%; background: var(--rc, var(--rar-c)); box-shadow: 0 0 6px var(--rc, var(--rar-c)); flex: none; }
.wc-tag { position: absolute; top: 8px; right: 8px; padding: 2px 8px; border-radius: 8px; font-size: .68rem; font-weight: 900; color: #2A1C00; background: var(--gold); box-shadow: 0 4px 10px rgba(0, 0, 0, .35); z-index: 3; }
.is-new .wc-tag { animation: tagpulse 1.2s ease-in-out infinite; }
@keyframes tagpulse { 50% { transform: scale(1.12); } }
/* lớp foil theo độ hiếm */
.wc-foil, .wc-glare { position: absolute; inset: 3px; border-radius: 11px; pointer-events: none; }
.r-rare .wc-foil { background: linear-gradient(115deg, transparent 30%, rgba(120, 200, 255, .22) 45%, transparent 60%); background-size: 250% 250%; background-position: var(--mx, 50%) var(--my, 50%); mix-blend-mode: screen; }
.r-epic .wc-foil { background: conic-gradient(from 90deg at var(--mx, 50%) var(--my, 50%), rgba(255, 0, 200, .18), rgba(0, 220, 255, .18), rgba(180, 107, 255, .22), rgba(255, 0, 200, .18)); mix-blend-mode: color-dodge; opacity: .55; }
.r-legendary .wc-foil { background: linear-gradient(105deg, transparent 20%, rgba(255, 240, 180, .0) 30%, rgba(255, 230, 150, .5) 42%, rgba(255, 120, 200, .35) 50%, rgba(120, 220, 255, .35) 58%, transparent 70%); background-size: 300% 100%; mix-blend-mode: color-dodge; animation: foil 4.5s linear infinite; }
@keyframes foil { from { background-position: 150% 0; } to { background-position: -150% 0; } }
.r-legendary .wc-in { animation: legglow 3s ease-in-out infinite; background: linear-gradient(130deg, #FFF3B0, #FFC94A 30%, #FF9AD5 50%, #8FE3FF 70%, #FFC94A); background-size: 300% 300%; }
@keyframes legglow { 0%, 100% { background-position: 0% 50%; box-shadow: 0 10px 24px rgba(0, 0, 0, .35), 0 0 14px rgba(255, 201, 74, .25); } 50% { background-position: 100% 50%; box-shadow: 0 10px 24px rgba(0, 0, 0, .35), 0 0 26px rgba(255, 201, 74, .55); } }
.r-legendary .wc-media::after { content: ""; position: absolute; inset: 0; background: radial-gradient(circle, #fff 0 1px, transparent 2px) 12% 22% / 46px 46px, radial-gradient(circle, rgba(255, 240, 200, .9) 0 1px, transparent 2px) 60% 70% / 64px 64px; mix-blend-mode: screen; opacity: .6; animation: twinkle 2.2s ease-in-out infinite; pointer-events: none; }
@keyframes twinkle { 50% { opacity: .15; } }
.wc-glare { background: radial-gradient(circle at var(--mx, 50%) var(--my, 0%), rgba(255, 255, 255, .35), transparent 45%); opacity: 0; transition: opacity .25s; mix-blend-mode: overlay; }
@media (hover: hover) { .wcard:hover { z-index: 2; } .wcard:hover .wc-in { box-shadow: 0 18px 40px rgba(0, 0, 0, .45), 0 0 0 1px rgba(255, 255, 255, .1), 0 0 30px rgba(var(--rgl), .35); } .wcard:hover .wc-glare { opacity: 1; } }
.wcard:focus-visible { outline: 3px solid var(--rc); outline-offset: 3px; }
/* chưa có / bỏ lỡ */
.wcard.s-locked .wc-media img, .wcard.s-locked .wc-media video, .wcard.s-missed .wc-media img, .wcard.s-missed .wc-media video { filter: saturate(.5) brightness(.5); transition: filter .3s; }
@media (hover: hover) { .wcard.s-locked:hover .wc-media img, .wcard.s-locked:hover .wc-media video, .wcard.s-missed:hover .wc-media img, .wcard.s-missed:hover .wc-media video { filter: saturate(.8) brightness(.8); } }
.wcard.s-locked .wc-in, .wcard.s-missed .wc-in { background: linear-gradient(150deg, color-mix(in srgb, var(--rc) 45%, #333), color-mix(in srgb, var(--rc) 25%, #111)); animation: none; }
.wcard.s-locked .wc-foil, .wcard.s-missed .wc-foil, .wcard.s-locked .wc-media::after, .wcard.s-missed .wc-media::after { display: none; }
.wc-lock { position: absolute; top: 9px; right: 9px; z-index: 3; display: inline-flex; align-items: center; gap: 5px; max-width: calc(100% - 18px); padding: 3px 8px 3px 6px; border-radius: 8px; background: rgba(0, 0, 0, .58); color: #fff; pointer-events: none; -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); }
.wc-lock svg { width: 12px; height: 12px; flex: none; }
.wc-lock small { font-size: .66rem; font-weight: 800; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.wcard.s-missed .wc-lock { background: rgba(170, 40, 30, .8); }
.wcard.s-missed::before { content: "Missed"; position: absolute; z-index: 4; top: 10px; left: -4px; display: none; padding: 2px 10px 2px 8px; font-size: .64rem; font-weight: 900; color: #fff; background: #D9483B; border-radius: 0 8px 8px 0; box-shadow: 0 3px 8px rgba(0, 0, 0, .35); }
.wcard.picked .wc-in { outline: 3px solid var(--acc); outline-offset: 2px; }
.wcard.picked::after { content: "✓"; position: absolute; top: -8px; right: -8px; z-index: 5; width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; background: var(--acc); color: #fff; font-weight: 900; box-shadow: 0 4px 10px rgba(0, 0, 0, .35); }
/* kích thước */
.wcard.mini .wc-cap { padding: 12px 7px 5px; } .wcard.mini .wc-cap b { font-size: .72rem; } .wcard.mini .wc-cap small { font-size: .6rem; }
.wcard.mini .wc-lock { top: 6px; right: 6px; padding: 2px 6px 2px 5px; } .wcard.mini .wc-lock small { font-size: .58rem; }
.wcard.mini.s-missed::before { top: 6px; font-size: .56rem; padding: 1px 7px 1px 6px; }
.wcard.tiny { border-radius: 8px; } .wcard.tiny .wc-in { padding: 2px; border-radius: 8px; } .wcard.tiny .wc-media { border-radius: 6px; }
.wcard.tiny .wc-cap, .wcard.tiny .wc-tag, .wcard.tiny .wc-lock { display: none; }
.wgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 16px; }
.wgrid.sm { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.wc-fly { position: fixed !important; z-index: 98; pointer-events: none; margin: 0; }
.catch { animation: catch .6s var(--spring); }
@keyframes catch { 30% { transform: scale(1.35); filter: drop-shadow(0 0 12px rgba(255, 201, 74, .9)); } }

/* ---------- collection page ---------- */
.col-top { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: 14px; margin-bottom: 16px; }
.col-count { padding: 18px; display: grid; gap: 4px; align-content: start; }
.cc-n { display: flex; align-items: baseline; gap: 6px; }
.cc-n b { font-family: var(--f-display); font-weight: 400; font-size: 3.6rem; line-height: .9; }
.cc-n span { color: var(--muted); font-weight: 700; font-size: 1.1rem; }
.col-count > small { color: var(--muted); font-weight: 600; }
.cc-r { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px 14px; margin-top: 10px; }
.cc-r span { display: flex; align-items: center; gap: 7px; font-size: .84rem; font-weight: 600; color: var(--ink-2); }
.cc-r span b { margin-left: auto; color: var(--ink); }
.cc-r .r-common { --rc: var(--rar-c); } .cc-r .r-rare { --rc: var(--rar-r); } .cc-r .r-epic { --rc: var(--rar-e); } .cc-r .r-legendary { --rc: var(--rar-l); }
.col-vip { padding: 18px; display: flex; gap: 16px; align-items: center; }
.cv-t { flex: 1; min-width: 0; display: grid; gap: 5px; }
.cv-t b { font-size: 1.25rem; line-height: 1; }
.cv-t small { color: var(--muted); font-weight: 600; font-size: .8rem; }
.cv-t em { font-style: normal; color: var(--muted); font-size: .76rem; line-height: 1.35; }
.col-tabs { margin-bottom: 14px; max-width: 100%; overflow-x: auto; scrollbar-width: none; }
.col-tabs .zh { font-family: var(--f-zh); font-size: 1rem; font-weight: 400; }
.col-flt { display: flex; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }
.col-note { color: var(--ink-2); margin: 0 2px 14px; font-size: .92rem; }
.col-lv { padding: 16px; margin-bottom: 14px; }
.col-lv > h3 .muted { font-weight: 600; }
.drop { display: grid; grid-template-columns: minmax(150px, 220px) minmax(0, 1fr) auto; gap: 14px; align-items: center; padding: 10px 6px; border-top: 1px solid var(--line); }
.drop:first-of-type { border-top: 0; }
.dr-t { display: flex; gap: 10px; align-items: center; min-width: 0; }
.dr-t > span:last-child { display: grid; min-width: 0; line-height: 1.25; }
.dr-t b { font-size: .9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dr-t small { color: var(--muted); font-size: .74rem; }
.dr-n { flex: none; width: 30px; height: 30px; border-radius: 10px; display: grid; place-items: center; font-weight: 800; font-size: .8rem; background: rgba(255, 255, 255, .07); color: var(--ink-2); }
.dr-n svg { width: 16px; height: 16px; }
.drop.done .dr-n { background: var(--acc-grad); color: #fff; }
.drop.boss .dr-n { background: linear-gradient(140deg, #FFE9A8, var(--gold)); color: #3A2600; }
.dr-c { display: grid; grid-template-columns: repeat(3, minmax(0, 170px)); gap: 10px; }
@media (max-width: 760px) { .col-top { grid-template-columns: 1fr; } .drop { grid-template-columns: minmax(0, 1fr) auto; } .dr-c { grid-column: 1 / -1; grid-row: 2; grid-template-columns: repeat(3, minmax(0, 1fr)); } .col-vip { flex-wrap: wrap; } }
.col-mini { padding: 16px; }
.cm-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; text-decoration: none; }
.cm-th { position: relative; aspect-ratio: 16 / 9; border-radius: 10px; overflow: hidden; display: grid; place-items: center; background: rgba(255, 255, 255, .06); border: 2px solid var(--rc, var(--line)); color: var(--faint); }
.cm-th.r-common { --rc: var(--rar-c); } .cm-th.r-rare { --rc: var(--rar-r); } .cm-th.r-epic { --rc: var(--rar-e); } .cm-th.r-legendary { --rc: var(--rar-l); }
.cm-th img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.cm-th svg { width: 16px; height: 16px; }
.cm-th.empty { border: 1px dashed var(--line-2); background: rgba(255, 255, 255, .03); }
.cm-tx { font-size: .8rem; margin-top: 8px; }
.me-col { padding: 16px; }
.mc-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(62px, 1fr)); gap: 6px; }
.ci-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }

/* ---------- wallpaper sheet ---------- */
.ws-sheet { padding-top: 0 !important; }
.ws-media { position: relative; margin: 0 -18px 14px; aspect-ratio: 16 / 9; overflow: hidden; border-radius: 24px 24px 0 0; background: #0c1513; }
@media (min-width: 700px) { .ws-media { margin: -26px -26px 16px; } }
.ws-media video { width: 100%; height: 100%; object-fit: cover; display: block; }
.ws-media video.dim { filter: blur(10px) brightness(.45) saturate(.6); transform: scale(1.1); }
.ws-lock { position: absolute; inset: 0; display: grid; place-items: center; align-content: center; gap: 8px; color: #fff; }
.ws-lock svg { width: 34px; height: 34px; }
.ws-h { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.ws-h h2 { padding-right: 0; }
.rpill { padding: 3px 10px; border-radius: 999px; font-size: .74rem; font-weight: 800; color: #111; background: var(--rc); }
.rpill.r-common { --rc: var(--rar-c); } .rpill.r-rare { --rc: var(--rar-r); } .rpill.r-epic { --rc: var(--rar-e); } .rpill.r-legendary { --rc: var(--rar-l); background: linear-gradient(120deg, #FFF3B0, #FFC94A, #FF9AD5); }
.ws-acts { margin-bottom: 6px; }
.ws-c { flex: none; width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center; font-weight: 900; font-size: .74rem; color: #102019; }
.ws-c.c-en { background: var(--en); } .ws-c.c-zh { background: var(--zh); font-family: var(--f-zh); font-size: 1rem; } .ws-c.c-ielts { background: var(--ie); }
.ws-where .row { gap: 12px; }
.ws-where .row > svg { width: 18px; height: 18px; color: var(--muted); }
.tag-s svg { width: 12px; height: 12px; display: inline-block; vertical-align: -1px; }

/* ---------- VIP rings ---------- */
.vav { --s: 40px; --t: max(2.5px, calc(var(--s) * .075)); position: relative; display: inline-grid; place-items: center; width: var(--s); height: var(--s); flex: none; isolation: isolate; vertical-align: middle; }
.vav.lg { --s: 64px; } .vav.xl { --s: 120px; }
.vav > .av { position: relative; z-index: 2; width: calc(var(--s) - var(--t) * 2 - 4px); height: calc(var(--s) - var(--t) * 2 - 4px); font-size: calc(var(--s) * .3); }
.vav > .av.emo { font-size: calc(var(--s) * .42); }
.vav .vr, .vav .vr2 { position: absolute; inset: 0; border-radius: 50%; z-index: 1; pointer-events: none; }
.vav .vr { background: var(--ring); -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - var(--t)), #000 calc(100% - var(--t) + .5px)); mask: radial-gradient(farthest-side, transparent calc(100% - var(--t)), #000 calc(100% - var(--t) + .5px)); animation: spin var(--spd, 8s) linear infinite; box-shadow: 0 0 calc(var(--s) * .18) var(--halo, transparent); }
.vav::before { content: ""; position: absolute; inset: calc(var(--s) * -.08); border-radius: 50%; z-index: 0; background: radial-gradient(closest-side, var(--halo, transparent), transparent); opacity: .8; pointer-events: none; }
.vav .vb { position: absolute; left: 50%; bottom: calc(var(--s) * -.1); transform: translateX(-50%); z-index: 3; font-style: normal; font-weight: 900; font-size: max(.5rem, calc(var(--s) * .16)); line-height: 1; padding: .2em .45em; border-radius: .5em; color: var(--vbc, #fff); background: var(--vbg, #333); box-shadow: 0 2px 6px rgba(0, 0, 0, .45); white-space: nowrap; letter-spacing: .02em; }
.vav.v1, .vav.v2 { --ring: conic-gradient(#ff6a58, #ffab6b, #ff6a58 60%, #ffd0a8, #ff6a58); --spd: 9s; --vbg: linear-gradient(120deg, #ff6a58, #ffab6b); --halo: rgba(255, 106, 88, .22); }
.vav.v2 { --spd: 7s; }
.vav.v3, .vav.v4 { --ring: conic-gradient(#ffffff, #9aa8b0, #eef3f5, #7d8b93, #ffffff); --spd: 5s; --vbg: linear-gradient(120deg, #F4F7F8, #9AA8B0); --vbc: #1d2427; --halo: rgba(220, 235, 240, .25); }
.vav.v4 { --spd: 4s; }
.vav.v5, .vav.v6 { --ring: conic-gradient(#fff3b0, #ffc94a, #b9860f, #ffe08a, #fff8d6, #ffc94a, #fff3b0); --spd: 3.6s; --vbg: linear-gradient(120deg, #FFF1C2, #FFC94A); --vbc: #2A1C00; --halo: rgba(255, 201, 74, .4); }
.vav.v5::before, .vav.v6::before { animation: halo2 2.4s ease-in-out infinite; }
.vav.v6 { --spd: 3s; }
@keyframes halo2 { 50% { opacity: .35; transform: scale(1.08); } }
.vav.v7, .vav.v8 { --ring: conic-gradient(#b46bff, #5ee7ff, #b46bff, #ff7be0, #b46bff); --spd: 3s; --vbg: linear-gradient(120deg, #B46BFF, #5EE7FF); --vbc: #12052A; --halo: rgba(180, 107, 255, .45); }
.vav.v8 { --spd: 2.4s; }
.vav .vr2 { inset: calc(var(--t) * -1.6); border: max(1px, calc(var(--t) * .45)) dashed var(--ring2, rgba(94, 231, 255, .8)); animation: spin var(--spd2, 7s) linear infinite reverse; }
.vav.v7::before, .vav.v8::before { animation: halo2 2s ease-in-out infinite; }
.vav.v9 { --ring: conic-gradient(#ff3d00, #ffb300, #ff6d00, #ffea00, #ff3d00); --spd: 1.8s; --vbg: linear-gradient(120deg, #FF3D00, #FFB300); --vbc: #fff; --halo: rgba(255, 90, 0, .55); --ring2: rgba(255, 179, 0, .85); --spd2: 4s; }
.vav.v9::before { inset: calc(var(--s) * -.2); background: conic-gradient(from 0deg, transparent, rgba(255, 90, 0, .55), transparent 30%, rgba(255, 179, 0, .5), transparent 60%, rgba(255, 61, 0, .55), transparent); filter: blur(calc(var(--s) * .08)); animation: spin 3s linear infinite, flick 1.2s ease-in-out infinite; }
.vav.v10 { --ring: conic-gradient(#ff5e5e, #ffc94a, #5eff9a, #5ee7ff, #8a7bff, #ff7be0, #ff5e5e); --spd: 1.6s; --vbg: linear-gradient(120deg, #FF7BE0, #FFC94A, #5EE7FF); --vbc: #1b0f2a; --halo: rgba(255, 220, 140, .55); --ring2: rgba(255, 201, 74, .9); --spd2: 3s; }
.vav.v10::before { inset: calc(var(--s) * -.22); background: conic-gradient(rgba(255, 94, 94, .5), rgba(255, 201, 74, .5), rgba(94, 255, 154, .5), rgba(94, 231, 255, .5), rgba(138, 123, 255, .5), rgba(255, 123, 224, .5), rgba(255, 94, 94, .5)); filter: blur(calc(var(--s) * .1)); animation: spin 4s linear infinite reverse, halo2 2s ease-in-out infinite; }
.vav.v10::after { content: ""; position: absolute; z-index: 4; left: 50%; top: calc(var(--s) * -.2); width: calc(var(--s) * .42); height: calc(var(--s) * .26); transform: translateX(-50%); background: linear-gradient(160deg, #FFF3B0, #FFC94A 60%, #B9860F); clip-path: polygon(0 100%, 0 25%, 25% 60%, 50% 0, 75% 60%, 100% 25%, 100% 100%); filter: drop-shadow(0 2px 3px rgba(0, 0, 0, .5)); animation: crown 2.4s ease-in-out infinite; }
@keyframes crown { 50% { transform: translateX(-50%) translateY(-2px) rotate(-4deg); } }
.vsp { position: absolute; inset: calc(var(--s) * -.14); z-index: 3; animation: spin 3.2s linear infinite; pointer-events: none; }
.vsp b { position: absolute; width: max(3px, calc(var(--s) * .07)); height: max(3px, calc(var(--s) * .07)); border-radius: 50%; background: #fff; box-shadow: 0 0 6px 2px var(--halo); }
.vsp b:nth-child(1) { top: 0; left: 50%; } .vsp b:nth-child(2) { bottom: 12%; left: 6%; } .vsp b:nth-child(3) { bottom: 12%; right: 6%; }
.hud-me .vav { --s: 40px; }
.av.img { padding: 0; background: #0c1513; }
.av.img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.lvr .av-in img { width: 100%; height: 100%; object-fit: cover; border-radius: 50%; }
.lvr .av-in { overflow: hidden; }
.av-pick { position: relative; border-radius: 50%; }
.av-edit { position: absolute; right: -2px; bottom: -2px; width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; background: var(--acc); color: #fff; z-index: 5; box-shadow: 0 2px 6px rgba(0, 0, 0, .4); }
.av-edit svg { width: 12px; height: 12px; }
.av-up { display: flex; gap: 14px; align-items: center; padding: 12px; border-radius: 16px; background: rgba(255, 255, 255, .04); border: 1px dashed var(--line-2); }
.av-up > div { display: grid; gap: 6px; } .av-up small { font-size: .78rem; }
/* chúc mừng lên VIP */
.vip-ovl .ovl-in { max-width: 440px; overflow: visible; background: radial-gradient(ellipse at 50% 20%, rgba(255, 201, 74, .18), transparent 60%), rgba(12, 18, 16, .95); }
.vip-ovl:has(.v7) .ovl-in, .vip-ovl:has(.v8) .ovl-in { background: radial-gradient(ellipse at 50% 20%, rgba(180, 107, 255, .25), transparent 60%), rgba(12, 18, 16, .95); }
.vip-ovl:has(.vipup.v9) .ovl-in { background: radial-gradient(ellipse at 50% 20%, rgba(255, 90, 0, .28), transparent 60%), rgba(14, 12, 10, .96); }
.vip-ovl:has(.vipup.v10) .ovl-in { background: radial-gradient(ellipse at 50% 15%, rgba(255, 220, 140, .3), rgba(138, 123, 255, .12) 45%, transparent 70%), rgba(12, 12, 18, .96); }
.vip-stage { position: relative; width: 220px; height: 190px; display: grid; place-items: center; margin-top: -10px; }
.vip-stage .vav { --s: 124px; animation: vipin .9s var(--spring) both; }
@keyframes vipin { 0% { transform: scale(.2) rotate(-180deg); opacity: 0; } 100% { transform: none; opacity: 1; } }
.vip-stage .vav { z-index: 1; }
.vip-burst { position: absolute; z-index: 0; inset: -40px; border-radius: 50%; background: repeating-conic-gradient(rgba(255, 220, 140, .4) 0 6deg, transparent 6deg 20deg); -webkit-mask: radial-gradient(closest-side, #000 25%, transparent 70%); mask: radial-gradient(closest-side, #000 25%, transparent 70%); animation: spin 14s linear infinite, fade .8s .3s both; }
.vipup.v7 .vip-burst, .vipup.v8 .vip-burst { background: repeating-conic-gradient(rgba(180, 107, 255, .45) 0 6deg, transparent 6deg 20deg); }
.vipup.v9 .vip-burst { background: repeating-conic-gradient(rgba(255, 120, 0, .5) 0 6deg, transparent 6deg 20deg); }
.vipup.v10 .vip-burst { background: repeating-conic-gradient(rgba(255, 94, 94, .4) 0 5deg, rgba(255, 201, 74, .4) 5deg 10deg, transparent 10deg 18deg, rgba(94, 231, 255, .4) 18deg 23deg, transparent 23deg 30deg); }
.vip-k { font-weight: 800; color: var(--gold); font-size: .8rem; }
.vipup h2 { font-family: var(--f-display); font-weight: 400; font-size: 3.4rem; line-height: 1; background: linear-gradient(120deg, #FFF3B0, #FFC94A); -webkit-background-clip: text; background-clip: text; color: transparent; animation: xpin .6s .3s var(--spring) both; }
.vipup.v7 h2, .vipup.v8 h2 { background-image: linear-gradient(120deg, #E9D5FF, #5EE7FF); }
.vipup.v9 h2 { background-image: linear-gradient(120deg, #FFEA00, #FF3D00); }
.vipup.v10 h2 { background-image: linear-gradient(120deg, #FF7BE0, #FFC94A, #5EE7FF, #8A7BFF); background-size: 200% 100%; animation: xpin .6s .3s var(--spring) both, foil 3s linear infinite; }
.vip-style { color: var(--ink-2); font-weight: 700; margin-top: -4px; }
.vip-perks { list-style: none; display: grid; gap: 8px; text-align: left; margin: 6px 0 4px; width: 100%; }
.vip-perks li { display: flex; gap: 10px; align-items: flex-start; font-size: .88rem; color: var(--ink-2); }
.vip-perks svg { flex: none; width: 18px; height: 18px; color: var(--gold); margin-top: 2px; }

/* ---------- header: bell, theme, hide / show ---------- */
.hud-in { position: relative; transition: transform .35s var(--ease), opacity .3s; }
.bell { position: relative; }
.bell .badge { top: -3px; right: -3px; }
.bell.ring svg { animation: bellring .9s ease; transform-origin: 50% 10%; }
@keyframes bellring { 10%, 50% { transform: rotate(16deg); } 30%, 70% { transform: rotate(-14deg); } 90% { transform: rotate(4deg); } }
.hud-hide { position: absolute; left: 50%; bottom: -15px; transform: translateX(-50%); width: 34px; height: 17px; border-radius: 0 0 12px 12px; display: grid; place-items: center; color: var(--muted); background: var(--glass-2); border: 1px solid var(--line); border-top: 0; opacity: .7; transition: opacity .2s, color .2s; }
.hud-hide:hover { opacity: 1; color: var(--ink); }
.hud-hide svg { width: 14px; height: 14px; }
.hud-show { position: fixed; z-index: 41; top: 10px; left: 50%; transform: translate(-50%, -150%); display: inline-flex; align-items: center; gap: 6px; height: 34px; padding: 0 14px 0 10px; border-radius: 999px; font-weight: 700; font-size: .82rem; color: var(--ink-2); background: var(--glass-2); -webkit-backdrop-filter: var(--blur); backdrop-filter: var(--blur); border: 1px solid var(--line); box-shadow: var(--shadow-sm); transition: transform .35s var(--ease); }
.hud-show svg { width: 16px; height: 16px; }
body.hud-off .hud-in { transform: translateY(calc(-100% - 30px)); opacity: 0; pointer-events: none; }
body.hud-off .hud-show { transform: translate(-50%, 0); }
body.hud-off .layout { padding-top: 58px; }
body.hud-off .lcol, body.hud-off .side { top: 58px; max-height: calc(100dvh - 70px); }
body.hud-off .rail { top: 58px; max-height: calc(100dvh - 72px); }
@media (max-width: 860px) {
  body.hud-off .tabbar { transform: translateY(140%); }
  .tabbar { transition: transform .35s var(--ease); }
  .hud-r .theme-t { display: none; }
  .hud-hide { bottom: -14px; }
}
/* nhiều mục menu: chỉ hiện chữ của mục đang mở khi màn chưa đủ rộng */

.nav a.catch, .tabbar a.catch { color: var(--gold); }

/* ---------- notifications ---------- */
.np { position: fixed; z-index: 65; width: 380px; background: rgba(14, 21, 19, .96); max-height: min(560px, calc(100dvh - 120px)); display: flex; flex-direction: column; padding: 0; overflow: hidden; animation: popin .2s var(--spring); transform-origin: top right; }
.np.in-sheet { position: static; width: auto; max-height: none; animation: none; }
.np-h { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px 10px; border-bottom: 1px solid var(--line); }
.np.in-sheet .np-h { display: none; }
.np-all { font-size: .8rem; font-weight: 700; color: var(--acc-2); }
.np-list { overflow-y: auto; padding: 6px; }
.np-i { display: flex; gap: 12px; padding: 10px; border-radius: 14px; cursor: pointer; transition: background .2s; }
.np-i:hover { background: var(--glass-3); }
.np-i.new { background: color-mix(in srgb, var(--acc) 9%, transparent); }
.np-av { position: relative; flex: none; align-self: flex-start; display: inline-grid; }
.np-k { position: absolute; right: -4px; bottom: -4px; z-index: 5; width: 20px; height: 20px; border-radius: 50%; display: grid; place-items: center; background: var(--acc); color: #fff; box-shadow: 0 0 0 2px rgba(12, 18, 16, .9); }
.np-k svg { width: 11px; height: 11px; }
.np-b { flex: 1; min-width: 0; display: grid; gap: 4px; }
.np-b p { font-size: .88rem; line-height: 1.35; color: var(--ink-2); }
.np-b p b { color: var(--ink); }
.np-b small { color: var(--muted); font-size: .74rem; }
.np-w { width: 110px; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 8px; border: 2px solid var(--line-2); }
.np-a { display: flex; gap: 6px; margin-top: 2px; }
.np-empty { display: grid; justify-items: center; gap: 8px; padding: 28px 18px; text-align: center; color: var(--muted); font-size: .88rem; }
.np-empty svg { width: 26px; height: 26px; }

/* ---------- friends rail ---------- */
.rail { position: sticky; z-index: 3; top: calc(var(--hud-h) + 28px); width: var(--rail-w); max-height: calc(100dvh - var(--hud-h) - 44px); display: none; flex-direction: column; padding: 0; overflow: hidden; }
.rail.in-sheet { position: static; display: flex; width: auto; max-height: none; background: none; border: 0; box-shadow: none; -webkit-backdrop-filter: none; backdrop-filter: none; }
@media (min-width: 1500px) { body.rail-on .layout > .rail { display: flex; animation: railin .35s var(--ease); } }
@keyframes railin { from { opacity: 0; transform: translateX(30px); } }
body.quizzing .hud-show, body.playing .hud-show { display: none !important; }
.rl-h { display: flex; align-items: center; gap: 10px; padding: 14px 10px 10px 16px; border-bottom: 1px solid var(--line); }
.rl-h b { font-size: 1rem; }
.rl-on { display: inline-flex; align-items: center; gap: 6px; font-size: .78rem; font-weight: 700; color: var(--ok); margin-right: auto; }
.rl-on i { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ok) 25%, transparent); }
.rl-x svg { width: 16px; height: 16px; }
.rl-req { display: flex; align-items: center; gap: 8px; margin: 10px 10px 0; padding: 8px 12px; border-radius: 12px; text-decoration: none; font-weight: 700; font-size: .84rem; background: color-mix(in srgb, var(--acc) 16%, transparent); color: var(--acc-2); }
.rl-req svg { width: 16px; height: 16px; } .rl-req svg:last-child { margin-left: auto; }
.rl-list { overflow-y: auto; padding: 8px; display: grid; gap: 2px; }
.rl-i { display: flex; align-items: center; gap: 10px; padding: 8px 6px; border-radius: 14px; transition: background .2s; }
.rl-i:hover { background: var(--glass-3); }
.rl-i.me { background: rgba(255, 255, 255, .04); }
.rl-rk { flex: none; width: 22px; text-align: center; font-weight: 800; font-size: .8rem; color: var(--muted); }
.rl-rk.top { color: #2A1C00; height: 22px; line-height: 22px; border-radius: 50%; }
.rl-rk.t1 { background: linear-gradient(140deg, #FFF1C2, var(--gold)); } .rl-rk.t2 { background: linear-gradient(140deg, #F4F7F8, #9AA8B0); } .rl-rk.t3 { background: linear-gradient(140deg, #F7D3B0, #C17A3A); }
.rl-av { position: relative; flex: none; display: inline-grid; }
.rl-av .dot { position: absolute; right: -1px; bottom: 1px; z-index: 6; width: 11px; height: 11px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 2px rgba(12, 18, 16, .95); }
.rl-n { flex: 1; min-width: 0; display: grid; line-height: 1.25; }
.rl-n b { font-size: .88rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rl-n small { font-size: .72rem; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rl-i.on .rl-n small { color: color-mix(in srgb, var(--ok) 80%, var(--ink)); }
.rl-a { display: flex; gap: 2px; opacity: 0; transition: opacity .2s; }
.rl-i:hover .rl-a, .rl-i:focus-within .rl-a, .rail.in-sheet .rl-a { opacity: 1; }
.icon-btn.sm { width: 30px; height: 30px; border: 0; } .icon-btn.sm svg { width: 15px; height: 15px; }
.rl-empty { display: grid; justify-items: center; gap: 10px; text-align: center; padding: 18px 16px; color: var(--muted); font-size: .86rem; }
.rl-empty > svg { width: 26px; height: 26px; }
.rl-f { display: flex; gap: 6px; padding: 10px; border-top: 1px solid var(--line); margin-top: auto; }
.rl-f .btn { flex: 1; padding: 0 10px; }
.edge-tab { position: fixed; z-index: 30; right: 0; top: 50%; transform: translateY(-50%); display: none; align-items: center; gap: 8px; writing-mode: vertical-rl; padding: 14px 8px; border-radius: 14px 0 0 14px; font-weight: 800; font-size: .8rem; color: var(--ink-2); background: var(--glass-2); -webkit-backdrop-filter: var(--blur); backdrop-filter: var(--blur); border: 1px solid var(--line); border-right: 0; box-shadow: var(--shadow-sm); }
.edge-tab svg { width: 16px; height: 16px; transform: rotate(90deg); }
.edge-tab:hover { color: var(--ink); background: var(--glass); }
.side-tab { top: 36%; } .rail-tab { top: 60%; }
@media (min-width: 1500px) { body.has-acct:not(.rail-on) .rail-tab { display: inline-flex; } }
@media (min-width: 1241px) { body.has-side.side-off .side-tab { display: inline-flex; } }
body.quizzing .edge-tab, body.playing .edge-tab { display: none !important; }
.lb-row .lb-rank.top { color: #2A1C00; border-radius: 50%; width: 26px; height: 26px; display: grid; place-items: center; justify-self: center; }
.lb-rank.t1 { background: linear-gradient(140deg, #FFF1C2, var(--gold)); } .lb-rank.t2 { background: linear-gradient(140deg, #F4F7F8, #9AA8B0); } .lb-rank.t3 { background: linear-gradient(140deg, #F7D3B0, #C17A3A); }

/* ---------- invites / share ---------- */
.inv-l .row { gap: 12px; }
.sh-quota { display: flex; gap: 14px; align-items: center; padding: 12px 14px; border-radius: 18px; background: rgba(255, 255, 255, .04); border: 1px solid var(--line); margin: 8px 0 6px; }
.sh-quota > div { display: grid; gap: 3px; }
.sh-quota small { color: var(--muted); font-size: .8rem; }
.qdots { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 3px; }
.qdots i { width: 16px; height: 6px; border-radius: 3px; background: rgba(255, 255, 255, .14); }
.qdots i.on { background: var(--gold); }
.sh-block { padding: 14px; border-radius: 14px; background: color-mix(in srgb, var(--gold) 10%, transparent); color: #FFE7A6; font-weight: 600; font-size: .9rem; }
.sh-fr { display: grid; grid-template-columns: repeat(auto-fill, minmax(104px, 1fr)); gap: 8px; }
.sh-f { display: grid; justify-items: center; gap: 4px; padding: 12px 6px 10px; border-radius: 16px; border: 1px solid var(--line); background: rgba(255, 255, 255, .04); text-align: center; transition: border-color .2s, background .2s; }
.sh-f b { font-size: .82rem; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sh-f small { font-size: .68rem; color: var(--muted); }
.sh-f[aria-pressed="true"] { border-color: var(--acc); background: color-mix(in srgb, var(--acc) 14%, transparent); }
.sh-f:disabled { opacity: .4; }
.sh-walls { min-height: 60px; }
.sh-th { width: 64px; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 8px; }

/* ---------- duels ---------- */
.du-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 14px; align-items: start; }
@media (max-width: 960px) { .du-grid { grid-template-columns: 1fr; } }
.du-lists { display: grid; gap: 14px; }
.du-new .seg .zh { font-family: var(--f-zh); font-size: 1rem; font-weight: 400; }
.du-opp { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 8px; max-height: 340px; overflow-y: auto; padding: 2px; }
.du-o { display: grid; justify-items: center; gap: 4px; padding: 12px 8px; border-radius: 16px; border: 1px solid var(--line); background: rgba(255, 255, 255, .04); text-align: center; transition: border-color .2s, background .2s, transform .2s; }
.du-o:hover { transform: translateY(-2px); }
.du-o b { font-size: .84rem; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.du-o small { font-size: .68rem; color: var(--muted); line-height: 1.25; }
.du-o[aria-pressed="true"] { border-color: var(--acc); background: color-mix(in srgb, var(--acc) 14%, transparent); }
.du-dice { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; background: linear-gradient(140deg, #E9D5FF, var(--rar-e)); color: #2A0C4A; }
.du-dice svg { width: 22px; height: 22px; }
.du-used { padding: 14px; border-radius: 14px; background: rgba(255, 255, 255, .05); color: var(--ink-2); font-size: .9rem; margin-bottom: 12px; }
.du-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 14px; }
.du-stats span { display: grid; text-align: center; padding: 10px 4px; border-radius: 14px; background: rgba(255, 255, 255, .04); font-size: .72rem; color: var(--muted); font-weight: 600; }
.du-stats b { font-size: 1.3rem; color: var(--ink); }
.du-row { text-decoration: none; gap: 12px; }
.tag-s.gold { background: var(--gold); color: #2A1C00; }
.tag-s.d0 { background: rgba(61, 220, 132, .18); color: #7FF0B2; } .tag-s.d1 { background: rgba(94, 234, 212, .16); color: var(--gem); } .tag-s.d2 { background: rgba(255, 201, 74, .16); color: var(--gold); } .tag-s.d3 { background: rgba(255, 138, 61, .18); color: var(--fire); } .tag-s.d4 { background: rgba(255, 90, 90, .2); color: #FF8F8F; }
.du-ready { gap: 12px; }
.du-ready p { max-width: 46ch; }
.du-vs { position: fixed; inset: 0; z-index: 90; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 10px; padding: 20px; background: radial-gradient(ellipse at center, rgba(255, 106, 88, .25), rgba(3, 7, 6, .92) 65%); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); animation: fade .2s; }
.du-vs.out { animation: fade .35s reverse forwards; }
.vs-l, .vs-r { display: grid; justify-items: center; gap: 10px; text-align: center; }
.vs-l { animation: vsl .6s var(--spring) both; } .vs-r { animation: vsr .6s var(--spring) both; }
@keyframes vsl { from { transform: translateX(-60vw); } } @keyframes vsr { from { transform: translateX(60vw); } }
.vs-l b, .vs-r b { font-size: 1.2rem; max-width: 30vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.vs-m { display: grid; justify-items: center; gap: 4px; }
.vs-m span { font-family: var(--f-display); font-size: clamp(3.6rem, 12vw, 7rem); line-height: .9; color: var(--gold); text-shadow: 0 0 40px rgba(255, 201, 74, .6); animation: vsm .5s .45s var(--spring) both; }
.vs-m small { color: var(--ink-2); font-weight: 700; }
@keyframes vsm { from { transform: scale(3); opacity: 0; } }
@media (max-width: 560px) { .du-vs .vav.xl { --s: 84px; } }
.du-stage { position: fixed; inset: 0; z-index: 56; display: grid; grid-template-rows: auto auto auto 1fr; gap: 16px; padding: calc(16px + env(safe-area-inset-top)) clamp(14px, 4vw, 40px) 24px; background: rgba(4, 9, 8, .72); -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px); overflow-y: auto; }
.du-stage > * { width: 100%; max-width: 760px; margin: 0 auto; }
.du-top { display: flex; align-items: center; gap: 12px; }
.du-prog { flex: 1; display: flex; gap: 4px; }
.du-prog i { flex: 1; height: 6px; border-radius: 3px; background: rgba(255, 255, 255, .12); }
.du-prog i.done { background: var(--acc-2); } .du-prog i.cur { background: var(--gold); animation: halo2 1s ease-in-out infinite; }
.du-q { display: grid; gap: 6px; text-align: center; margin-top: 4vh; }
.du-q small { color: var(--muted); font-weight: 700; font-size: .8rem; }
.du-q h2 { font-size: clamp(1.3rem, 4vw, 2rem); line-height: 1.25; }
.du-q h2.zh { font-weight: 400; font-size: clamp(1.6rem, 5vw, 2.4rem); }
.du-time { height: 8px; border-radius: 4px; background: rgba(255, 255, 255, .1); overflow: hidden; }
.du-time i { display: block; height: 100%; background: linear-gradient(90deg, var(--gold), var(--acc-2)); transform-origin: left; }
.du-stage.hurry .du-time i { background: var(--bad); }
.du-opts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; align-content: start; }
@media (max-width: 560px) { .du-opts { grid-template-columns: 1fr; } }
.du-op { display: flex; align-items: center; gap: 12px; }
.du-op.chosen { border-color: var(--gold); background: color-mix(in srgb, var(--gold) 18%, transparent); transform: scale(1.02); }
.du-op:disabled:not(.chosen) { opacity: .45; }
.du-res { padding: 18px; display: grid; gap: 16px; }
.du-banner { display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; align-items: center; padding: 22px 16px; border-radius: 22px; background: rgba(255, 255, 255, .04); text-align: center; }
.du-banner.win { background: radial-gradient(ellipse at 50% 0, rgba(255, 201, 74, .3), transparent 70%), rgba(255, 255, 255, .04); }
.du-banner.lose { background: radial-gradient(ellipse at 50% 0, rgba(120, 140, 160, .22), transparent 70%), rgba(255, 255, 255, .03); }
.du-banner.wait { grid-template-columns: 1fr; }
.du-banner.wait h2 { font-family: var(--f-display); font-weight: 400; font-size: 3rem; color: var(--gold); }
.du-banner small { color: var(--muted); font-weight: 700; font-size: .78rem; }
.du-face { display: grid; justify-items: center; gap: 6px; }
.du-face > b { font-family: var(--f-display); font-weight: 400; font-size: 2.4rem; line-height: 1; }
.du-mid h2 { font-family: var(--f-display); font-weight: 400; font-size: clamp(2rem, 6vw, 3.2rem); line-height: 1; }
.du-banner.win .du-mid h2 { color: var(--gold); }
.du-mid p { color: var(--ink-2); font-size: .88rem; max-width: 30ch; margin: 6px auto 0; }
@media (max-width: 620px) { .du-banner { grid-template-columns: 1fr 1fr; } .du-mid { grid-column: 1 / -1; grid-row: 1; } }
.du-rev summary { cursor: pointer; display: flex; align-items: center; gap: 8px; font-weight: 700; padding: 10px 2px; }
.du-rev summary svg { width: 18px; height: 18px; color: var(--acc-2); }
.du-rev ol { list-style: none; display: grid; gap: 8px; }
.du-rev li { display: grid; gap: 4px; padding: 10px 12px; border-radius: 14px; background: rgba(255, 255, 255, .04); }
.du-rev li .tag-s { justify-self: start; }
.du-ans { font-size: .84rem; color: var(--ink-2); }
.du-mk { display: flex; gap: 8px; flex-wrap: wrap; }
.du-mk i { font-style: normal; display: inline-flex; align-items: center; gap: 4px; font-size: .76rem; font-weight: 700; padding: 2px 8px; border-radius: 8px; }
.du-mk i svg { width: 12px; height: 12px; }
.du-mk .ok { background: var(--ok-bg); color: var(--ok); } .du-mk .bad { background: var(--bad-bg); color: var(--bad); }

/* ---------- live quiz topics + jokes + prize ---------- */
.qz-src.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 640px) { .qz-src.three { grid-template-columns: 1fr; } }
.tp-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; max-height: 330px; overflow-y: auto; padding: 2px; }
.tp { display: grid; gap: 2px; padding: 10px 12px; border-radius: 14px; border: 1px solid var(--line); background: rgba(255, 255, 255, .04); text-align: left; transition: border-color .2s, background .2s, transform .15s; }
.tp:hover { transform: translateY(-1px); }
.tp-ic { font-size: 1.5rem; line-height: 1.1; }
.tp b { font-size: .86rem; }
.tp small { font-size: .7rem; color: var(--muted); line-height: 1.25; }
.tp[aria-pressed="true"] { border-color: var(--acc); background: color-mix(in srgb, var(--acc) 16%, transparent); }
.qz-fun { display: flex; gap: 10px; align-items: flex-start; max-width: 640px; margin: 14px auto 0; padding: 12px 16px; border-radius: 16px; background: rgba(255, 201, 74, .12); border: 1px dashed rgba(255, 201, 74, .45); color: #FFEFC2; font-weight: 600; font-size: clamp(.95rem, 2vw, 1.15rem); text-align: left; animation: rise .5s .5s var(--ease) both; }
.qz-fun span { font-size: 1.4em; line-height: 1; }
.qz-fun.sm { font-size: .9rem; margin-top: 4px; }
.qz-award { display: grid; justify-items: center; gap: 8px; width: min(320px, 100%); margin: 6px 0; }
.qz-award .wcard { width: 100%; animation: rvin .9s .4s cubic-bezier(.2, 1.25, .4, 1) both; }
.qz-award p { font-size: .9rem; color: var(--ink-2); }

/* ---------- lesson: meaning after word order ---------- */
.fb .mean:empty { display: none; }
.fb .mean { margin-top: 8px; padding: 10px 12px; border-radius: 12px; background: rgba(255, 255, 255, .06); display: grid; gap: 3px; }
.mean-s { font-weight: 700; font-size: .98rem; color: var(--ink); }
.mean-s.zh { font-weight: 400; font-size: 1.25rem; }
.mean-vi { color: var(--gold); font-weight: 700; font-size: .95rem; }
.mean-w { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.mean-w span { display: inline-flex; align-items: baseline; gap: 5px; padding: 3px 9px; border-radius: 8px; background: rgba(255, 255, 255, .07); font-size: .78rem; }
.fb .mean b { display: inline; font-size: inherit; color: var(--ink); }
.mean-w b { font-weight: 800; } .mean-w b.zh { font-weight: 400; font-size: 1rem; }
.mean-w i { font-style: normal; color: var(--muted); }
.mean-w em { font-style: normal; color: var(--ink-2); }

/* ---------- auth ---------- */
.remember { display: flex; align-items: center; gap: 10px; margin: -2px 0 10px; font-size: .88rem; font-weight: 600; color: var(--ink-2); cursor: pointer; user-select: none; }
.remember input { width: 18px; height: 18px; accent-color: var(--acc); }

/* ---------- bg picker forest card ---------- */
.wcard.forest { --rc: #3a5a4c; }

.req-row .grow small { display: block; }
@media (min-width: 1500px) { .rail-btn { display: none; } }
@media (max-width: 560px) { .rv-cards .wc-lock small { font-size: .58rem; } .rv-cards .wc-cap b { font-size: .74rem; } }
@media (max-width: 420px) { .hud-r .rail-btn { width: 34px; height: 34px; } }

/* =================== v12.1 =================== */
.wc-tag.st { background: rgba(255, 255, 255, .9); color: #13201A; }
/* bố cục: các cột xếp thành một hàng, khoảng cách bằng nhau, cả nhóm luôn nằm giữa màn hình */
.layout { --gap: 24px; width: 100%; max-width: none; margin: 0; display: flex; justify-content: center; align-items: flex-start; gap: var(--gap); }
.layout > .main { flex: 1 1 0; min-width: 0; max-width: 1100px; }
.layout.three > .main { max-width: 780px; }
.layout.two > .main { max-width: 900px; }
.layout > .lcol { flex: 0 0 230px; }
.layout > .side { flex: 0 0 330px; }
.layout > .rail { flex: 0 0 var(--rail-w); }
.col-h { display: flex; align-items: center; justify-content: space-between; padding: 0 2px 0 6px; margin-bottom: -4px; }
.col-h b { font-size: .74rem; font-weight: 700; letter-spacing: .04em; color: var(--faint); }
.col-h .icon-btn svg { width: 15px; height: 15px; }
@media (min-width: 1241px) { body.side-off .layout > .side { display: none; } }
@media (max-width: 1240px) {
  .col-h { display: none; }
  .layout.three { flex-wrap: wrap; }
  .layout.three > .main { flex: 1 1 calc(100% - 254px); max-width: none; }
  .layout.three > .side { flex: 1 1 100%; order: 5; position: static; max-height: none; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
}
@media (max-width: 1060px) {
  .layout.two { flex-direction: column; align-items: stretch; }
  .layout.two > .main { max-width: none; flex: none; }
  .layout.two > .side { flex: none; position: static; max-height: none; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
}
@media (max-width: 860px) {
  .layout { flex-direction: column; align-items: stretch; }
  .layout > .main, .layout > .lcol, .layout > .side { flex: none; max-width: none; width: 100%; }
  .layout.three > .lcol { order: -1; }
}
.hud-in { width: min(1368px, 100%); }
@media (min-width: 1500px) { body.rail-on .hud-in { width: min(1690px, 100%); } }
.hud-r > * { flex-shrink: 0; }
.hud-r { gap: 8px; }
/* menu kiểu Steam */
.nav.menu { gap: 2px; }
.mi { position: relative; }
.mi .mt { position: relative; display: inline-flex; align-items: center; gap: 7px; height: 38px; padding: 0 10px 0 13px; border-radius: 999px; text-decoration: none; font-weight: 700; font-size: .9rem; color: var(--ink-2); transition: background .2s, color .2s; white-space: nowrap; }
.mi .mt > svg { width: 16px; height: 16px; }
.mi .mt > svg:last-child { width: 13px; height: 13px; opacity: .6; transition: transform .2s; }
.mi .mt .badge { top: -2px; right: -2px; }
.mi:hover .mt, .mi:focus-within .mt { background: var(--glass-3); color: var(--ink); }
.mi:hover .mt > svg:last-child { transform: rotate(180deg); }
.mi.on .mt { background: color-mix(in srgb, var(--acc) 16%, transparent); color: var(--acc-2); }
.dd { position: absolute; left: -6px; top: 100%; padding-top: 10px; min-width: 290px; opacity: 0; visibility: hidden; transform: translateY(-6px); transition: opacity .16s, transform .16s, visibility .16s; z-index: 50; }
.dd.right { left: auto; right: -6px; }
.mi:hover > .dd, .mi:focus-within > .dd { opacity: 1; visibility: visible; transform: none; }
.dd .dd-in { padding: 6px; display: grid; gap: 2px; background: rgba(14, 21, 19, .97); -webkit-backdrop-filter: blur(24px); backdrop-filter: blur(24px); border-radius: 18px; box-shadow: var(--shadow); }
.dd a, .dd button { display: flex; align-items: center; gap: 12px; padding: 9px 12px; border-radius: 12px; text-decoration: none; color: var(--ink-2); text-align: left; width: 100%; position: relative; }
.dd a:hover, .dd button:hover, .dd a:focus-visible { background: var(--glass-3); color: var(--ink); }
.dd a > svg, .dd button > svg { width: 18px; height: 18px; flex: none; color: var(--acc-2); }
.dd span { display: grid; line-height: 1.25; }
.dd b { font-size: .88rem; color: var(--ink); } .dd b.zhl { font-family: var(--f-body); }
.dd small { font-size: .74rem; color: var(--muted); }
.dd .badge { position: static; margin-left: auto; }
.dd-me { display: grid; padding: 10px 12px 8px; border-bottom: 1px solid var(--line); margin-bottom: 4px; }
.dd-me b { font-size: .95rem; } .dd-me small { font-size: .76rem; color: var(--muted); }
@media (max-width: 1500px) { .mi .mt > svg:last-child { display: none; } .mi .mt { padding: 0 12px; } }
@media (max-width: 1180px) { .mi .mt span { display: none; } }
@media (hover: none) { .dd { display: none; } }
/* chip VIP */
.vipc { position: relative; width: 40px; height: 40px; display: grid; place-items: center; text-decoration: none; border-radius: 50%; flex: none; }
.vipc svg { position: absolute; inset: 0; width: 100%; height: 100%; transform: rotate(-90deg); }
.vipc circle { fill: none; stroke-width: 3.5; }
.vipc .bg { stroke: rgba(255, 255, 255, .12); }
.vipc .fg { stroke: url(#none); stroke: var(--gold); stroke-linecap: round; transition: stroke-dashoffset 1s var(--ease); }
.vipc b { position: relative; font-size: .7rem; font-weight: 900; letter-spacing: -.02em; color: var(--gold); line-height: 1; margin-top: -4px; }
.vipc-t { position: absolute; bottom: 7px; font-size: .46rem; font-weight: 900; letter-spacing: .08em; color: var(--muted); }
.vipc::before { content: ""; position: absolute; inset: 5px; border-radius: 50%; background: rgba(255, 201, 74, .08); }
.vipc.v0 .fg { stroke: var(--muted); } .vipc.v0 b { color: var(--ink-2); }
.vipc.v7 .fg, .vipc.v8 .fg { stroke: #B46BFF; } .vipc.v7 b, .vipc.v8 b { color: #CDA8FF; }
.vipc.v9 .fg { stroke: #FF6D00; } .vipc.v9 b { color: #FFB300; }
.vipc.v10 .fg { stroke: #FF7BE0; } .vipc.v10 b { background: linear-gradient(120deg, #FF7BE0, #FFC94A, #5EE7FF); -webkit-background-clip: text; background-clip: text; color: transparent; }
@media (max-width: 860px) { .hud-r .vipc { width: 34px; height: 34px; } .vipc-t { display: none; } .vipc b { margin: 0; } }
@media (max-width: 420px) { .hud-r .chipx.fire { display: none; } }
/* VIP 0 */
.vav.v0 { --ring: conic-gradient(rgba(255, 255, 255, .28), rgba(255, 255, 255, .12), rgba(255, 255, 255, .28)); --spd: 0s; --vbg: #3A4540; --vbc: #C9D0CB; --halo: transparent; }
.vav.v0 .vr { animation: none; }
/* bài bị khoá (học tuần tự) */
.node.locked .face { opacity: .55; filter: saturate(.4); }
.nlock { position: absolute; right: -2px; bottom: -2px; z-index: 3; width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; background: rgba(10, 16, 14, .9); border: 1px solid var(--line-2); color: var(--ink-2); }
.nlock svg { width: 11px; height: 11px; }
.pop-lock { display: flex; gap: 8px; align-items: flex-start; font-size: .84rem; color: var(--ink-2); margin-bottom: 10px; }
.pop-lock svg { width: 15px; height: 15px; flex: none; margin-top: 2px; color: var(--gold); }
.boss-go svg { width: 15px; height: 15px; }
.layout.one, .layout.two, .layout.three { max-width: none; margin: 0; }
.layout > .main { container-type: inline-size; }
.me-grid { grid-template-columns: minmax(0, 1fr) !important; }
@container (min-width: 860px) { .me-grid { grid-template-columns: minmax(0, 1fr) 340px !important; align-items: start; } }
@container (max-width: 900px) { .du-grid { grid-template-columns: 1fr; } }
@container (max-width: 700px) { .col-top { grid-template-columns: 1fr; } .drop { grid-template-columns: minmax(0, 1fr) auto; } .dr-c { grid-column: 1 / -1; grid-row: 2; grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (min-width: 1181px) { .nav.menu .mi .mt span { display: inline; } }
/* nền rõ hơn: lớp phủ nhẹ hơn ở giữa màn hình */
.veil { background: linear-gradient(180deg, rgba(4, 9, 8, .42) 0%, rgba(4, 9, 8, .10) 28%, rgba(4, 9, 8, .22) 70%, rgba(4, 9, 8, .62) 100%); }
.scene { background-size: cover; image-rendering: auto; }
/* chip VIP: chữ VIP ở trên, số ở dưới */
.vipc { flex-direction: column; gap: 0; }
.vipc { display: flex; align-items: center; justify-content: center; }
.vipc .vipc-t { position: relative; bottom: auto; font-size: .5rem; line-height: 1; color: var(--muted); letter-spacing: .06em; margin-bottom: 1px; }
.vipc b { margin: 0; font-size: .82rem; line-height: 1; }
@media (max-width: 860px) { .vipc-t { display: block !important; font-size: .44rem !important; } .vipc b { font-size: .74rem; } }
/* đổi XP lấy hình nền */
.ws-buy { display: flex; align-items: center; gap: 14px; padding: 12px 14px; margin: 4px 0 8px; border-radius: 18px; background: color-mix(in srgb, var(--gold) 9%, transparent); border: 1px solid color-mix(in srgb, var(--gold) 30%, transparent); }
.wb-ic { flex: none; width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; background: rgba(94, 234, 212, .14); color: var(--gem); }
.wb-ic svg { width: 20px; height: 20px; }
.wb-t { flex: 1; min-width: 0; display: grid; gap: 4px; }
.wb-t small { color: var(--muted); font-size: .8rem; }
.wb-t .bar i { background: linear-gradient(90deg, var(--gem), var(--gold)); }
.ws-buy .btn { flex: none; }
@media (max-width: 560px) { .ws-buy { flex-wrap: wrap; } .ws-buy .btn { width: 100%; } }
.cc-xp { display: flex; gap: 10px; align-items: flex-start; margin-top: 10px; padding: 10px 12px; border-radius: 14px; background: rgba(94, 234, 212, .08); }
.cc-xp > svg { width: 18px; height: 18px; flex: none; color: var(--gem); margin-top: 2px; }
.cc-xp span { display: grid; gap: 2px; } .cc-xp b { font-size: .92rem; } .cc-xp small { color: var(--muted); font-size: .76rem; line-height: 1.35; }
.xp-unlock .wcard { width: min(320px, 100%); animation: rvin .9s .1s cubic-bezier(.2, 1.25, .4, 1) both; }
.ws-media video.dim { filter: saturate(.6) brightness(.6); transform: none; }
.ws-lock { inset: auto 12px 12px auto; padding: 6px 12px; border-radius: 10px; background: rgba(0, 0, 0, .55); display: flex; gap: 6px; font-size: .82rem; }
.ws-lock svg { width: 15px; height: 15px; }

/* ---------- live quiz host lobby (v16) ---------- */
.lb { display: grid; gap: 18px; width: min(980px, 100%); margin: 0 auto; padding-top: 2vh; }
.lb-join { display: grid; grid-template-columns: 1fr auto; gap: 28px; align-items: center; padding: 26px 30px; border-radius: 26px; background: var(--glass-2); border: 1px solid var(--line-2); -webkit-backdrop-filter: var(--blur); backdrop-filter: var(--blur); box-shadow: var(--shadow); }
.lb-steps { display: grid; gap: 6px; justify-items: start; text-align: left; min-width: 0; }
.lb-k { color: var(--muted); font-weight: 700; font-size: .92rem; }
.lb-k2 { margin-top: 14px; }
.lb-url { font-size: 1.12rem; color: var(--ink-2); line-height: 1.45; }
.lb-url b { color: var(--ink); }
.lb .big-pin { font-size: clamp(3.6rem, 9vw, 6.6rem); letter-spacing: .04em; line-height: .95; display: flex; align-items: center; gap: .22em; font-variant-numeric: tabular-nums; }
.lb .big-pin i { width: .16em; height: .16em; border-radius: 50%; background: var(--acc); flex: none; }
.lb-acts { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.lb-acts .btn { display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; }
.lb-acts .btn svg { width: 16px; height: 16px; flex: none; }
.lb-copy { background: #fff; color: #10201b; border-color: transparent; }
.lb-copy:hover { background: #eef3f0; }
.lb-copy.done { background: var(--ok); color: #06241a; }
.lb-lock.on { border-color: var(--warn); color: var(--warn); }
.lb-qr { display: grid; gap: 8px; justify-items: center; color: var(--muted); font-size: .85rem; font-weight: 700; }
.lb-qr svg { width: clamp(150px, 18vw, 196px); height: auto; border-radius: 16px; display: block; box-shadow: 0 10px 30px rgba(0, 0, 0, .35); }
.lb-room { padding: 20px 22px 22px; border-radius: 22px; background: rgba(10, 16, 14, .42); border: 1px solid var(--line); }
.lb-room-h { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.lb-room-h h3 { display: inline-flex; align-items: center; gap: 10px; font-size: 1.15rem; }
.lb-room-h h3 svg { width: 20px; height: 20px; color: var(--acc); }
.lb-locked { display: inline-flex; align-items: center; gap: 6px; color: var(--warn); font-size: .86rem; font-weight: 700; }
.lb-locked svg { width: 14px; height: 14px; }
.lb-pl { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; }
.lb-pl li { display: flex; align-items: center; gap: 10px; padding: 7px 8px 7px 7px; border-radius: 14px; background: var(--glass-3); border: 1px solid var(--line); min-width: 0; }
.lb-pl li.new { animation: lbIn .45s var(--spring) both; animation-delay: var(--d, 0ms); }
.lb-pl .av { width: 34px; height: 34px; font-size: .82rem; color: #fff; background: var(--q2); }
.lb-pl li:nth-child(4n+1) .av { background: var(--q1); } .lb-pl li:nth-child(4n+3) .av { background: var(--q3); } .lb-pl li:nth-child(4n) .av { background: var(--q4); }
.lb-pl b { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: .98rem; }
.lb-pl button { width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; color: var(--faint); flex: none; }
.lb-pl button:hover, .lb-pl button:focus-visible { background: var(--bad-bg); color: var(--bad); }
.lb-pl button svg { width: 13px; height: 13px; }
.lb-empty { display: grid; justify-items: center; gap: 10px; padding: 18px 8px 8px; color: var(--muted); text-align: center; }
.lb-dots { display: inline-flex; gap: 6px; }
.lb-dots i { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); animation: lbDot 1.2s ease-in-out infinite; }
.lb-dots i:nth-child(2) { animation-delay: .15s; } .lb-dots i:nth-child(3) { animation-delay: .3s; }
.qz-bot .lb-go { min-width: 260px; }
@keyframes lbIn { from { opacity: 0; transform: translateY(8px) scale(.94); } to { opacity: 1; transform: none; } }
@keyframes lbDot { 0%, 80%, 100% { opacity: .25; transform: translateY(0); } 40% { opacity: 1; transform: translateY(-4px); } }
@media (prefers-reduced-motion: reduce) { .lb-pl li.new, .lb-dots i { animation: none; } }
@media (max-width: 720px) {
  .lb { padding-top: 0; gap: 12px; }
  .lb-join { grid-template-columns: 1fr; gap: 18px; padding: 20px 18px; border-radius: 22px; }
  .lb-steps { justify-items: center; text-align: center; }
  .lb .big-pin { font-size: clamp(3.2rem, 17vw, 4.6rem); }
  .lb-acts { justify-content: center; }
  .lb-acts .btn { flex: 1 1 140px; justify-content: center; }
  .lb-qr { grid-auto-flow: column; align-items: center; gap: 12px; justify-content: center; }
  .lb-qr svg { width: 96px; border-radius: 10px; }
  .lb-room { padding: 16px 14px; }
  .lb-pl { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); }
  .qz-bot .lb-go { width: 100%; min-width: 0; }
}

/* ---------- test out + basics nudge (v16) ---------- */
.uh-acts { flex: none; display: flex; flex-direction: column; gap: 6px; align-items: stretch; }
.tout { display: inline-flex; align-items: center; justify-content: center; gap: 6px; height: 34px; padding: 0 13px; border-radius: 999px; font-weight: 700; font-size: .8rem; color: #2A1C00; background: var(--gold); transition: filter .2s, transform .2s var(--spring); }
.tout:hover { filter: brightness(1.08); transform: translateY(-1px); }
.tout svg { width: 15px; height: 15px; }
@media (max-width: 460px) { .tout { padding: 0 11px; font-size: .76rem; } }
.tout-list { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 8px; }
.tout-list li { display: flex; gap: 10px; align-items: flex-start; color: var(--ink-2); font-size: .92rem; }
.tout-list svg { width: 18px; height: 18px; color: var(--ok); flex: none; margin-top: 1px; }
.nudge { display: grid; grid-template-columns: auto 1fr; gap: 18px; align-items: center; padding: 16px 18px; margin-bottom: 18px; border-color: rgba(255, 201, 74, .35); background: linear-gradient(110deg, rgba(255, 201, 74, .14), rgba(10, 16, 14, .55) 55%); }
.ng-cards { position: relative; width: 150px; height: 96px; }
.ng-cards .wcard { position: absolute; width: 112px; top: 0; left: 0; transform: rotate(-7deg); box-shadow: var(--shadow-sm); }
.ng-cards .wcard:nth-child(2) { left: 22px; top: 12px; transform: rotate(2deg); }
.ng-cards .wcard:nth-child(3) { left: 40px; top: 26px; transform: rotate(9deg); }
.ng-t b { font-size: 1.06rem; display: block; }
.ng-t p { color: var(--ink-2); font-size: .9rem; margin-top: 4px; line-height: 1.45; }
.ng-acts { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.ng-acts .btn { display: inline-flex; align-items: center; gap: 6px; }
.ng-acts .btn svg { width: 15px; height: 15px; }
@media (max-width: 560px) { .nudge { grid-template-columns: 1fr; } .ng-cards { margin: 0 auto; } }
.lv-t .lv-wl { display: inline-flex; align-items: center; gap: 4px; color: var(--gold); font-weight: 700; }
.lv-t .lv-wl svg { width: 12px; height: 12px; fill: none; }
.lv-list button[aria-selected="true"] .lv-wl { color: #fff; }
.w-hint { display: flex; gap: 10px; align-items: flex-start; margin-top: 10px; padding: 10px 12px; border-radius: 12px; background: rgba(255, 201, 74, .1); color: var(--ink-2); font-size: .86rem; line-height: 1.45; }
.w-hint svg { width: 18px; height: 18px; color: var(--gold); flex: none; margin-top: 1px; }

/* ---------- có gì mới (v18) ---------- */
.np-brand { width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; background: rgba(255, 255, 255, .08); border: 1px solid var(--line); }
.np-brand svg { width: 22px; height: 22px; }
.wn-h { display: grid; grid-template-columns: auto 1fr; gap: 16px; align-items: center; margin-bottom: 18px; padding-right: 34px; }
.wn-logo { width: 58px; height: 58px; border-radius: 18px; display: grid; place-items: center; background: linear-gradient(140deg, rgba(255, 201, 74, .22), rgba(255, 255, 255, .04)); border: 1px solid rgba(255, 201, 74, .35); }
.wn-logo svg { width: 34px; height: 34px; }
.wn-h h2 { margin: 0 0 4px; font-size: 1.5rem; }
.wn-h .sub { margin: 0; }
.wn-c { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.wn-k { display: flex; flex-direction: column; gap: 10px; padding: 14px; border-radius: 16px; border: 1px solid var(--line); background: rgba(255, 255, 255, .04); }
.wn-k[data-l="en"] { --k: #6ee7b7; } .wn-k[data-l="zh"] { --k: #fca5a5; } .wn-k[data-l="ielts"] { --k: #93c5fd; }
.wn-k { border-top: 3px solid var(--k); }
.wn-kh { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.wn-kh b { font-size: 1.05rem; }
.wn-n { display: inline-flex; align-items: center; gap: 3px; font-size: .82rem; color: var(--muted); white-space: nowrap; }
.wn-n s { opacity: .7; } .wn-n em { font-style: normal; font-weight: 800; color: var(--k); font-size: 1rem; }
.wn-n svg { width: 12px; height: 12px; }
.wn-k ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 5px; flex: 1; }
.wn-k li { font-size: .86rem; color: var(--ink-2); line-height: 1.35; padding-left: 12px; position: relative; }
.wn-k li::before { content: ''; position: absolute; left: 0; top: .5em; width: 5px; height: 5px; border-radius: 50%; background: var(--k); }
.wn-go { width: 100%; justify-content: center; }
.wn-note { display: flex; gap: 10px; align-items: flex-start; margin: 14px 0 0; padding: 10px 12px; border-radius: 12px; background: rgba(255, 201, 74, .1); color: var(--ink-2); font-size: .86rem; line-height: 1.45; }
.wn-note svg { width: 18px; height: 18px; color: var(--gold); flex: none; margin-top: 1px; }
@media (max-width: 720px) { .wn-c { grid-template-columns: 1fr; } .wn-k ul { grid-template-columns: 1fr 1fr; column-gap: 12px; } .wn-h h2 { font-size: 1.3rem; } .wn-logo { width: 48px; height: 48px; } }

/* ---------- v19: bảng xếp hạng trên danh sách bạn ---------- */
.rail { overflow-y: auto; overscroll-behavior: contain; }
.rail .rl-list { overflow: visible; }
.rail:not(.in-sheet) .rl-f { position: sticky; bottom: 0; z-index: 4; background: color-mix(in srgb, var(--bg) 88%, transparent); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); }
.rk { border-bottom: 1px solid var(--line); padding: 4px 8px 10px; }
.rk-h { width: 100%; display: flex; align-items: center; gap: 10px; padding: 10px 6px 8px 8px; text-align: left; color: var(--ink); }
.rk-h b { font-size: 1rem; }
.rk-h small { color: var(--muted); font-size: .74rem; font-weight: 600; margin-right: auto; }
.rk-h > svg:last-child { width: 16px; height: 16px; color: var(--muted); transition: transform .25s var(--ease); }
.rk.shut .rk-h > svg:last-child { transform: rotate(-90deg); }
.rk-ic { width: 28px; height: 28px; border-radius: 10px; display: grid; place-items: center; color: #2A1C00; background: linear-gradient(140deg, #FFF1C2, var(--gold)); }
.rk-ic svg { width: 16px; height: 16px; }
.rk.shut .rk-tabs, .rk.shut .rk-body { display: none; }
.rk-tabs { display: grid; grid-template-columns: repeat(4, 1fr); margin: 2px 2px 8px; }
.rk-tabs button { padding: 0 4px; font-size: .78rem; min-height: 30px; }
.rk-list { display: grid; gap: 1px; }
.rk-i { display: flex; align-items: center; gap: 8px; padding: 5px 6px; border-radius: 12px; min-height: 42px; }
.rk-i:hover { background: var(--glass-3); }
.rk-i.me { background: color-mix(in srgb, var(--acc) 14%, transparent); }
.rk-i.out { margin-top: 6px; border: 1px dashed var(--line-2); }
.rk-n { flex: none; width: 22px; height: 22px; display: grid; place-items: center; font-weight: 800; font-size: .76rem; color: var(--muted); border-radius: 50%; }
.rk-n.m1 { color: #2A1C00; background: linear-gradient(140deg, #FFF1C2, var(--gold)); }
.rk-n.m2 { color: #1D2328; background: linear-gradient(140deg, #F4F7F8, #9AA8B0); }
.rk-n.m3 { color: #2A1608; background: linear-gradient(140deg, #F7D3B0, #C17A3A); }
.rk-av { flex: none; display: inline-grid; }
.rk-av .av { width: 30px; height: 30px; font-size: .72rem; }
.rk-t { min-width: 0; flex: 1; display: grid; line-height: 1.2; }
.rk-t b { font-size: .86rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rk-t small { font-size: .72rem; color: var(--muted); font-weight: 600; }
.rk-add { width: 28px; height: 28px; color: var(--acc); border-color: color-mix(in srgb, var(--acc) 40%, transparent); }
.rk-add svg { width: 14px; height: 14px; }
.rk-s { font-size: .7rem; font-weight: 700; color: var(--muted); padding: 0 4px; }
.rk-s.acc { color: var(--acc); }
.rk-s.ok { color: var(--ok); display: inline-grid; }
.rk-s.ok svg { width: 14px; height: 14px; }
.rk-load { color: var(--muted); font-size: .82rem; padding: 10px 8px; line-height: 1.45; }
.rk-note { margin: 8px 6px 0; font-size: .72rem; line-height: 1.45; color: var(--muted); }
.rl-h .rl-msg { margin-left: auto; width: 32px; height: 32px; }
.rl-h .rl-msg svg { width: 16px; height: 16px; }
.rl-h .rl-on + .rl-msg { margin-left: auto; }

/* ---------- v19: nhắn tin ---------- */
.chat-btn { position: relative; }
.chat-btn .badge { top: -3px; right: -3px; }
.chat-dock { position: fixed; right: 20px; bottom: 20px; z-index: 80; width: min(380px, calc(100vw - 24px)); height: min(560px, calc(100dvh - 110px)); display: flex; flex-direction: column; padding: 0; overflow: hidden; border-radius: 22px; box-shadow: 0 24px 70px rgba(0, 0, 0, .5); animation: pop .26s var(--spring); }
.chat-dock.in-game { z-index: 120; }
.chat-dock.inline { position: relative; right: auto; bottom: auto; width: 100%; height: min(620px, calc(100dvh - 260px)); min-height: 380px; box-shadow: none; animation: none; z-index: 1; }
.ch-head { display: flex; align-items: center; gap: 10px; padding: 12px 12px 10px 14px; border-bottom: 1px solid var(--line); }
.ch-hav { flex: none; display: inline-grid; }
.ch-hav.ic { width: 34px; height: 34px; border-radius: 12px; place-items: center; background: var(--glass-3); color: var(--acc); }
.ch-hav.ic svg { width: 18px; height: 18px; }
.ch-ht { flex: 1; min-width: 0; display: grid; line-height: 1.2; }
.ch-ht b { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ch-ht small { color: var(--muted); font-size: .74rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ch-head .icon-btn { width: 34px; height: 34px; }
.ch-list { overflow-y: auto; padding: 6px 8px 10px; flex: 1; }
.ch-h { font-size: .72rem; color: var(--muted); font-weight: 700; margin: 10px 8px 4px; }
.ch-t { width: 100%; display: flex; align-items: center; gap: 10px; padding: 8px; border-radius: 14px; text-align: left; color: var(--ink); }
.ch-t:hover { background: var(--glass-3); }
.ch-t.new .ch-tt b { color: var(--ink); } .ch-t.new .ch-tt small { color: var(--ink-2); font-weight: 700; }
.ch-av { position: relative; flex: none; display: inline-grid; }
.ch-av .dot { position: absolute; right: -1px; bottom: 1px; width: 11px; height: 11px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 2px rgba(12, 18, 16, .95); }
.ch-room { display: grid; place-items: center; color: var(--vio); background: color-mix(in srgb, var(--vio) 18%, transparent); }
.ch-room svg { width: 18px; height: 18px; }
.ch-tt { flex: 1; min-width: 0; display: grid; line-height: 1.25; }
.ch-tt b { font-size: .9rem; }
.ch-tt small { font-size: .78rem; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ch-tm { display: grid; justify-items: end; gap: 4px; font-size: .7rem; color: var(--muted); }
.ch-tm .badge { position: static; }
.ch-pad { padding: 16px; }
.ch-empty { display: grid; justify-items: center; gap: 10px; text-align: center; padding: 34px 20px; color: var(--muted); }
.ch-empty > svg { width: 34px; height: 34px; color: var(--faint); }
.ch-msgs { flex: 1; overflow-y: auto; padding: 12px 12px 6px; display: flex; flex-direction: column; gap: 2px; overscroll-behavior: contain; }
.ch-m { display: flex; align-items: flex-end; gap: 8px; max-width: 86%; margin-top: 8px; }
.ch-m.g { margin-top: 0; padding-left: 38px; }
.ch-m.me { align-self: flex-end; flex-direction: row-reverse; padding-left: 0; }
.ch-mav { flex: none; display: inline-grid; }
.ch-mav .av { width: 30px; height: 30px; font-size: .7rem; }
.ch-mb { min-width: 0; display: grid; }
.ch-mn { font-size: .7rem; color: var(--muted); font-weight: 700; margin: 0 0 2px 10px; }
.ch-mb p { margin: 0; padding: 8px 12px; border-radius: 16px 16px 16px 6px; background: var(--glass-3); color: var(--ink); font-size: .9rem; line-height: 1.4; white-space: pre-wrap; overflow-wrap: anywhere; }
.ch-m.me .ch-mb p { border-radius: 16px 16px 6px 16px; background: var(--acc-grad); color: #fff; }
.ch-m.me .ch-mb p a { color: #fff; }
.ch-mb time { font-size: .64rem; color: var(--faint); margin: 2px 10px 0; }
.ch-m.me .ch-mb time { text-align: right; }
.ch-form { display: flex; align-items: flex-end; gap: 8px; padding: 10px; border-top: 1px solid var(--line); }
.ch-in { flex: 1; resize: none; min-height: 42px; max-height: 120px; padding: 10px 14px; border-radius: 20px; border: 1px solid var(--line-2); background: var(--sink); color: var(--ink); font: inherit; font-size: .92rem; line-height: 1.4; }
.ch-in:focus { outline: 2px solid color-mix(in srgb, var(--acc) 60%, transparent); outline-offset: 0; }
.ch-send { width: 42px; height: 42px; padding: 0; border-radius: 50%; flex: none; justify-content: center; }
.ch-send svg { width: 18px; height: 18px; }
.cl-chat { margin-top: 4px; }
.pl-bar .pl-chat { width: 38px; height: 38px; margin-right: 6px; }
@media (max-width: 620px) {
  .chat-dock:not(.inline) { right: 0; bottom: 0; width: 100vw; height: 100dvh; border-radius: 0; }
  body.chat-open .tabbar { display: none; }
}

/* ---------- v19: hướng dẫn bắt buộc + gợi ý ---------- */
.tour { position: fixed; inset: 0; z-index: 200; pointer-events: none; }
.tr-b { position: fixed; background: rgba(3, 7, 6, .72); pointer-events: auto; }
.tr-ring { position: fixed; border-radius: 16px; box-shadow: 0 0 0 3px var(--gold), 0 0 0 9px rgba(255, 201, 74, .25), 0 0 40px rgba(255, 201, 74, .45); pointer-events: none; animation: trpulse 1.6s ease-in-out infinite; }
@keyframes trpulse { 50% { box-shadow: 0 0 0 3px var(--gold), 0 0 0 14px rgba(255, 201, 74, .12), 0 0 50px rgba(255, 201, 74, .55); } }
.tr-tip { position: fixed; pointer-events: auto; padding: 14px 16px 12px; border-radius: 18px; background: #FFF8E6; color: #2A1C00; box-shadow: 0 18px 50px rgba(0, 0, 0, .45); transition: left .25s var(--ease), top .25s var(--ease); }
.tr-tip .tr-k { font-size: .7rem; font-weight: 800; color: #9A6B00; }
.tr-tip b { display: block; font-size: 1.05rem; margin: 2px 0 4px; }
.tr-tip p { margin: 0; font-size: .9rem; line-height: 1.45; color: #4A3A12; }
.tr-dots { display: flex; gap: 5px; margin-top: 10px; }
.tr-dots i { width: 18px; height: 4px; border-radius: 2px; background: rgba(42, 28, 0, .16); }
.tr-dots i.on { background: var(--gold-d); }
.tr-tip.shake { animation: trshake .4s; }
@keyframes trshake { 20%, 60% { transform: translateX(-6px); } 40%, 80% { transform: translateX(6px); } }
.tour.wait .tr-ring, .tour.wait .tr-tip { opacity: 0; }
.tour.wait .tr-b { background: rgba(3, 7, 6, .55); }
.tour.wait .tr-b.t { left: 0 !important; top: 0 !important; width: 100% !important; height: 100% !important; }
.hint { position: fixed; z-index: 70; padding: 12px 14px; border-radius: 16px; background: #FFF8E6; color: #2A1C00; box-shadow: 0 14px 40px rgba(0, 0, 0, .4); pointer-events: none; animation: pop .3s var(--spring); }
.hint::after { content: ''; position: absolute; left: calc(var(--ax, 50%) - 8px); bottom: -7px; width: 16px; height: 16px; background: inherit; transform: rotate(45deg); border-radius: 3px; }
.hint.down::after { bottom: auto; top: -7px; }
.hint.gone { display: none; }
.hint b { display: block; font-size: .95rem; }
.hint p { margin: 3px 0 6px; font-size: .82rem; line-height: 1.45; color: #4A3A12; }
.hint small { font-size: .7rem; font-weight: 800; color: #9A6B00; }
.hint-target { position: relative; z-index: 2; box-shadow: 0 0 0 2px var(--gold), 0 0 22px rgba(255, 201, 74, .5) !important; animation: hintglow 1.4s ease-in-out infinite; }
@keyframes hintglow { 50% { box-shadow: 0 0 0 3px var(--gold), 0 0 34px rgba(255, 201, 74, .7) !important; } }
@media (prefers-reduced-motion: reduce) { .tr-ring, .hint-target { animation: none; } }

/* ---------- v19: bài học mở tự do, nút đổi nền ---------- */
.node.todo .face { opacity: .9; }
.col-mini .cm-go { margin-top: 10px; width: 100%; justify-content: center; }
.du-stats { grid-template-columns: repeat(4, 1fr); }

/* ---------- v20: tài khoản ---------- */
.gate { position: fixed; inset: 0; z-index: 190; display: grid; place-items: center; padding: 16px; background: rgba(3, 7, 6, .78); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); }
.gate-card { width: min(460px, 100%); max-height: calc(100dvh - 32px); overflow-y: auto; padding: 26px; border-radius: 24px; animation: pop .3s var(--spring); }
.gate-card h2 { margin: 10px 0 6px; }
.gate-ic { width: 46px; height: 46px; border-radius: 16px; display: grid; place-items: center; color: #2A1C00; background: linear-gradient(140deg, #FFF1C2, var(--gold)); }
.gate-ic svg { width: 22px; height: 22px; }
.gate-ic.ok { color: #fff; background: var(--ok); }
.gate-f { font-size: .84rem; margin-top: 12px; }
.gf { margin-top: 14px; }
.hintx { display: block; margin-top: 5px; font-size: .78rem; color: var(--muted); }
.hintx.warn { color: var(--gold); font-weight: 600; }
.linkb { display: inline-block; margin-top: 8px; padding: 0; background: none; border: 0; color: var(--acc); font: inherit; font-size: .84rem; font-weight: 700; cursor: pointer; }
.linkb:hover { text-decoration: underline; }
.acct-p .acct-rows { display: grid; gap: 6px; }
.acct-p .row { padding: 10px 12px; }
.acct-p .row .btn { flex: none; }
.acct-p + .foot-row { margin-top: -4px; }
.rk-duel { width: 28px; height: 28px; color: var(--ink-2); opacity: 0; transition: opacity .2s; }
.rk-duel svg { width: 14px; height: 14px; }
.rk-i:hover .rk-duel, .rk-i:focus-within .rk-duel, .rail.in-sheet .rk-duel { opacity: 1; }
@media (hover: none) { .rk-duel { opacity: 1; } }

/* ---------- v21: hiệu ứng vào trang chỉ chạy 1 lần (đổi level không làm menu / bảng xếp hạng nhảy) ---------- */
body.booted .hud-in, body.booted .layout > .rail, body.booted .tabbar { animation: none !important; }

/* ---------- v21: bố cục điện thoại (thanh trên gọn, thanh dưới kiểu game, nút Today nổi) ---------- */
.m-course, .m-today, .m-scrim, .tb-play, .tb-rank { display: none; }
@media (max-width: 860px) {
  .hud-r .course-pick, .hud-r .chat-btn, .hud-r .rail-btn, .hud-r .chipx.gem { display: none !important; }
  .hud-in { gap: 4px; }
  .hud-r { gap: 4px; min-width: 0; }
  .m-course { display: inline-flex; align-items: center; gap: 3px; height: 34px; padding: 0 8px 0 12px; border-radius: 999px; font-weight: 800; font-size: .86rem; color: #fff; background: var(--acc-grad); box-shadow: 0 4px 14px var(--acc-shadow); margin-right: auto; }
  .m-course svg { width: 14px; height: 14px; }
  .hud-in > .brand { margin-right: 4px; }
  .hud-in { justify-content: space-between; }
  .hud-r { flex: 1; justify-content: flex-end; }
  .hud-r .bell, .hud-r .icon-btn { width: 34px; height: 34px; }
  .hud-me .lvr, .hud-me .vav { transform: scale(.92); }

  /* thanh dưới: 5 nút, nút Play nổi ở giữa */
  .tabbar { height: 64px; padding: 6px 8px; overflow: visible; }
  .tabbar a, .tabbar .tb-play, .tabbar .tb-rank { flex: 1; position: relative; display: grid; place-items: center; align-content: center; gap: 1px; border-radius: 999px; text-decoration: none; font: inherit; font-size: .64rem; font-weight: 700; color: var(--muted); background: none; border: 0; padding: 0; cursor: pointer; }
  .tabbar .tb-rank svg { width: 21px; height: 21px; }
  .tabbar .tb-rank .badge { top: 2px; right: calc(50% - 22px); }
  .tabbar .tb-play { flex: 0 0 74px; }
  .tabbar .tb-play svg { width: 28px; height: 28px; padding: 15px; box-sizing: content-box; margin-top: -30px; border-radius: 50%; color: #2A1C00; background: radial-gradient(circle at 35% 30%, #FFF4CC, var(--gold) 60%, #E39A00); box-shadow: 0 0 0 5px rgba(12, 18, 16, .85), 0 10px 26px rgba(255, 170, 30, .45); transition: transform .2s var(--spring); }
  .tabbar .tb-play:active svg { transform: scale(.92); }
  .tabbar .tb-play span { margin-top: 2px; color: var(--gold); }
  .tabbar .tb-play.on span { color: #fff; }
  .tabbar .tb-play .badge { top: -26px; right: 8px; }

  /* nút Today nổi trên bản đồ, mở cột Today thành bảng trượt */
  .m-today { display: inline-flex; position: fixed; z-index: 35; left: 12px; bottom: calc(var(--nav-h, 64px) + 34px + env(safe-area-inset-bottom)); flex-direction: column; align-items: center; gap: 2px; width: 62px; padding: 9px 0 7px; border-radius: 20px; font-size: .62rem; font-weight: 800; color: #2A1C00; background: linear-gradient(160deg, #FFF1C2, var(--gold)); box-shadow: 0 10px 24px rgba(0, 0, 0, .35), 0 0 0 3px rgba(12, 18, 16, .7); }
  .m-today svg { width: 24px; height: 24px; }
  .m-today .badge { top: -6px; right: -6px; }
  body.hud-off .m-today { transform: translateY(160%); }
  .layout > .side { position: fixed !important; z-index: 62; left: 0; right: 0; bottom: 0; top: auto; max-height: 82dvh !important; overflow-y: auto; display: grid; grid-template-columns: 1fr !important; gap: 12px; padding: 16px 14px calc(20px + env(safe-area-inset-bottom)); border-radius: 24px 24px 0 0; background: rgba(12, 19, 17, .96); -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px); border-top: 1px solid var(--line-2); transform: translateY(105%); visibility: hidden; transition: transform .32s var(--ease), visibility 0s .32s; }
  body.side-sheet .layout > .side { transform: none; visibility: visible; transition: transform .32s var(--ease); }
  body.side-off .layout > .side { display: grid !important; }
  .m-scrim { position: fixed; inset: 0; z-index: 61; background: rgba(2, 6, 5, .6); opacity: 0; pointer-events: none; transition: opacity .25s; display: block; }
  body.side-sheet .m-scrim { opacity: 1; pointer-events: auto; }
  .layout > .side .side-x { display: none; }
  .side-tab, .rail-tab { display: none !important; }

  /* bảng chọn khoá + bảng Play */
  .cs-n { width: 54px; height: 40px; border-radius: 12px; display: grid; place-items: center; font-weight: 900; background: var(--glass-3); }
  .cs-i.sel .cs-n { background: var(--acc-grad); color: #fff; }
}
.play-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 12px; }
.pc { position: relative; display: grid; gap: 4px; padding: 16px 14px; border-radius: 20px; text-decoration: none; color: var(--ink); border: 1px solid var(--line-2); background: rgba(255, 255, 255, .05); }
.pc svg { width: 30px; height: 30px; padding: 9px; box-sizing: content-box; border-radius: 16px; color: #fff; margin-bottom: 4px; }
.pc b { font-size: 1rem; } .pc small { font-size: .78rem; color: var(--muted); line-height: 1.35; }
.pc .badge { top: 10px; right: 10px; }
.pc-duel svg { background: linear-gradient(140deg, #ff6a58, #ffab6b); } .pc-quiz svg { background: linear-gradient(140deg, #7B61FF, #B4A0FF); }
.pc-prac svg { background: linear-gradient(140deg, #10B981, #5EEAD4); } .pc-rev svg { background: linear-gradient(140deg, #E39A00, #FFC94A); }

/* ---------- v21: trang Me gọn hơn ---------- */
.me-stats { grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 6px; padding: 10px; }
.me-stats > div { padding: 8px 2px; border-radius: 12px; }
.me-stats b { font-size: 1.05rem; }
.me-stats small { font-size: .62rem; display: block; line-height: 1.2; }
@media (max-width: 560px) { .me-stats { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.me-col { padding: 16px; }
.me-col .mc-grid { grid-template-columns: repeat(auto-fill, minmax(118px, 1fr)); gap: 10px; }
@media (max-width: 560px) { .me-col .mc-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; } }
.bwall.compact { padding: 14px; }
.bwall.compact .bw { grid-template-columns: repeat(auto-fill, minmax(62px, 1fr)); gap: 6px; }
.bwall.compact .bw-i { padding: 8px 2px; gap: 3px; border-radius: 12px; }
.bwall.compact .bw-i .bdg { width: 36px; height: 36px; border-radius: 11px; }
.bwall.compact .bw-i .bdg svg { width: 18px; height: 18px; }
.bwall.compact .bw-i b { font-size: .64rem; }
.bwall.compact .bw-i small { display: none; }
/* v21: chặn tràn ngang ở trang Me trên điện thoại */
.me-grid > .list { grid-template-columns: minmax(0, 1fr); min-width: 0; }
.me-grid > .list > * { min-width: 0; }
.row .grow { min-width: 0; overflow-wrap: anywhere; }
.hm { grid-template-columns: repeat(14, minmax(0, 1fr)); gap: 4px; }
.foot-row .btn { min-width: 0; } .me-col .foot-row .btn { padding-inline: 10px; font-size: .86rem; }
.cs-i { text-align: left; width: 100%; }
.cs-i > svg { width: 22px; height: 22px; flex: none; color: var(--acc-2); }
.cs-i .grow b { display: block; } .cs-i .grow small { display: block; color: var(--muted); }
.cs-i .cs-n { width: 54px; height: 40px; border-radius: 12px; display: grid; place-items: center; font-weight: 900; background: var(--glass-3); flex: none; }
.cs-i.sel .cs-n { background: var(--acc-grad); color: #fff; }

/* ---------- v21b: cột phải tách 2 tab Ranking / Friends ---------- */
.rl-tabs { position: sticky; top: 0; z-index: 5; display: flex; align-items: center; gap: 6px; padding: 10px 8px 10px 10px; border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 82%, transparent); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); }
.rail.in-sheet .rl-tabs { background: none; -webkit-backdrop-filter: none; backdrop-filter: none; padding: 0 0 12px; }
.rl-t { position: relative; flex: 1; display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-height: 40px; padding: 0 10px; border-radius: 14px; font: inherit; font-weight: 800; font-size: .9rem; color: var(--muted); background: rgba(255, 255, 255, .04); border: 1px solid transparent; transition: background .2s, color .2s; }
.rl-t svg { width: 17px; height: 17px; }
.rl-t:hover { color: var(--ink); }
.rl-t[aria-selected="true"] { color: var(--ink); background: var(--glass-3); border-color: var(--line-2); }
.rl-t[data-t="rank"][aria-selected="true"] svg { color: var(--gold); }
.rl-t[data-t="friends"][aria-selected="true"] svg { color: var(--ok); }
.rl-t .badge { top: -5px; right: -4px; }
.rl-tn { font-style: normal; min-width: 20px; height: 20px; padding: 0 6px; border-radius: 999px; display: inline-grid; place-items: center; font-size: .7rem; font-weight: 800; color: #04210f; background: var(--ok); }
.rl-tabs .rl-msg { position: relative; flex: none; }
.rl-tabs .rl-msg .badge { top: -4px; right: -4px; }
.rl-tabs .rl-x { flex: none; }
.rl-p[hidden] { display: none !important; }
.rl-p { display: flex; flex-direction: column; min-height: 0; flex: 1; }
.rl-sub { display: flex; align-items: center; gap: 10px; padding: 12px 14px 4px; }
.rl-sub small { margin-left: auto; color: var(--muted); font-size: .74rem; font-weight: 600; }
.rk { border-bottom: 0; padding: 4px 8px 10px; }
.rk-sub { margin: 8px 6px 10px; color: var(--muted); font-size: .76rem; font-weight: 600; line-height: 1.4; }
.rail.in-sheet .rk { padding: 0; }
.rail.in-sheet .rl-sub { padding: 0 2px 6px; }
.rail.in-sheet .rl-tabs { padding-right: 52px; }

/* ---------- v22: quà duel hiện giữa màn hình rồi bay vào Collection / XP ---------- */
.pp { position: fixed; inset: 0; z-index: 90; display: grid; place-items: center; padding: 20px; background: rgba(2, 6, 5, .62); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); opacity: 0; transition: opacity .3s; cursor: pointer; }
.pp.on { opacity: 1; }
.pp.fly { opacity: 0; transition: opacity .45s .15s; pointer-events: none; }
.pp-in { display: grid; justify-items: center; gap: 10px; text-align: center; max-width: 360px; transform: scale(.7); transition: transform .5s var(--spring); }
.pp.on .pp-in { transform: none; }
.pp-k { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 999px; font-weight: 800; font-size: .78rem; color: #2A1C00; background: linear-gradient(140deg, #FFF1C2, var(--gold)); }
.pp-k svg { width: 15px; height: 15px; }
.pp-item { width: min(300px, 72vw); filter: drop-shadow(0 18px 40px rgba(0, 0, 0, .5)); }
.pp-item .wcard { width: 100%; }
.pp-xp, .pp-flying.pp-xp { width: 150px; height: 150px; margin: 0 auto; border-radius: 50%; display: grid; place-items: center; align-content: center; color: #04210f; background: radial-gradient(circle at 35% 30%, #E7FFF1, #3ED598 60%, #18A06A); box-shadow: 0 0 0 8px rgba(62, 213, 152, .18), 0 0 60px rgba(62, 213, 152, .45); }
.pp-xp svg { width: 36px; height: 36px; }
.pp-xp b { font-size: 2rem; line-height: 1; } .pp-xp small { font-weight: 800; font-size: .8rem; }
.pp-flying { position: fixed !important; z-index: 98; pointer-events: none; margin: 0; }
.pp h2 { margin: 4px 0 0; font-size: 1.35rem; } .pp p { margin: 0; color: var(--ink-2, #d6e2dc); font-size: .9rem; }
.pp-tap { color: var(--muted); font-size: .76rem; }

/* ---------- v22: thẻ "có duel đang chờ bạn" nổi trên màn hình ---------- */
.dw { position: fixed; z-index: 40; right: 18px; bottom: 22px; width: min(340px, calc(100vw - 24px)); border-radius: 22px; padding: 12px; background: color-mix(in srgb, var(--bg) 88%, transparent); border: 1px solid color-mix(in srgb, var(--gold) 45%, transparent); box-shadow: 0 18px 50px rgba(0, 0, 0, .45), 0 0 0 4px color-mix(in srgb, var(--gold) 12%, transparent); -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px); animation: dwin .45s var(--spring); }
@keyframes dwin { from { transform: translateY(30px) scale(.94); opacity: 0; } }
.dw-h { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.dw-ic { flex: none; width: 34px; height: 34px; border-radius: 12px; display: grid; place-items: center; color: #2A1C00; background: linear-gradient(140deg, #FFF1C2, var(--gold)); animation: dwpulse 1.8s ease-in-out infinite; }
.dw-ic svg { width: 19px; height: 19px; }
@keyframes dwpulse { 50% { box-shadow: 0 0 0 7px color-mix(in srgb, var(--gold) 22%, transparent); } }
.dw-h b { font-size: .98rem; } .dw-h small { display: block; color: var(--muted); font-size: .74rem; }
.dw-h .grow { flex: 1; min-width: 0; }
.dw-list { display: grid; gap: 6px; max-height: 46vh; overflow-y: auto; }
.dw-i { display: flex; align-items: center; gap: 9px; padding: 8px; border-radius: 16px; background: rgba(255, 255, 255, .05); }
.dw-i .grow { flex: 1; min-width: 0; display: grid; line-height: 1.25; }
.dw-i .grow b { font-size: .86rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dw-i .grow small { font-size: .72rem; color: var(--muted); }
.dw-i .btn { min-height: 34px; padding: 0 12px; font-size: .8rem; }
.dw-no { flex: none; }
.dw.mini { width: auto; padding: 8px 14px 8px 8px; cursor: pointer; }
.dw.mini .dw-list, .dw.mini .dw-x { display: none; }
.dw.mini .dw-h { margin: 0; }
body.quizzing .dw, body.chat-open .dw, body.side-sheet .dw { display: none; }
@media (max-width: 860px) { .dw { right: 12px; bottom: calc(var(--nav-h, 64px) + 30px + env(safe-area-inset-bottom)); } .dw.mini { right: auto; left: 86px; } }
@media (min-width: 1500px) { body.rail-on .dw { right: calc(var(--rail-w) + 40px); } }
body:has(.player) .dw, body:has(.tour) .dw, body:has(.gate) .dw, body:has(.pp) .dw { display: none; }
.du-prize { display: flex; align-items: center; gap: 12px; margin: 12px auto 4px; padding: 10px 14px 10px 10px; border-radius: 18px; width: fit-content; max-width: 100%; background: color-mix(in srgb, var(--gold) 12%, transparent); border: 1px solid color-mix(in srgb, var(--gold) 40%, transparent); }
.du-prize .wcard { width: 120px; flex: none; }
.du-prize small { display: block; color: var(--gold); font-weight: 800; font-size: .72rem; }
.du-prize b { font-size: .98rem; }
.du-xp { flex: none; width: 64px; height: 64px; border-radius: 50%; display: grid; place-items: center; align-content: center; font-size: .7rem; font-weight: 800; color: #04210f; background: radial-gradient(circle at 35% 30%, #E7FFF1, #3ED598 60%, #18A06A); }
.du-xp svg { width: 18px; height: 18px; } .du-xp b { font-size: 1.05rem; line-height: 1; }