/* ============================================================
   ASI · Shadow Tiếng Anh — Mầm non / Tiền tiểu học
   ============================================================ */
:root{
  --coral:#ff6b6b; --coral-d:#e8464b;
  --amber:#ffa94d; --mint:#3ec9b6; --sky:#5aa9f7;
  --violet:#9b7cf0; --lemon:#ffd93d;
  --ink:#2b2140; --ink-soft:#6b6180; --line:#efe7f6;
  --card:#ffffff; --bg:#fdf7f4;
  --grad-warm:linear-gradient(135deg,var(--coral),var(--amber));
  --grad-cool:linear-gradient(135deg,var(--sky),var(--mint));
  --sh-sm:0 2px 8px rgba(80,45,110,.06);
  --sh-md:0 10px 30px rgba(80,45,110,.10);
  --sh-lg:0 24px 60px rgba(80,45,110,.16);
  --r:18px; --r-lg:26px;
  --ease:cubic-bezier(.34,1.3,.44,1);
}
*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{
  font-family:'Quicksand',system-ui,sans-serif;
  color:var(--ink); background:var(--bg);
  min-height:100vh; overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.day-num,.today-sound{font-family:'Baloo 2',cursive}
button,input{font-family:inherit}
::selection{background:var(--lemon)}

/* ---------- nền bong bóng ---------- */
.bg-blobs{position:fixed;inset:0;z-index:-2;overflow:hidden;filter:blur(70px);opacity:.5}
.blob{position:absolute;border-radius:50%;animation:drift 22s ease-in-out infinite}
.b1{width:420px;height:420px;background:#ffc9c9;top:-120px;left:-100px}
.b2{width:380px;height:380px;background:#b8f2e6;top:30%;right:-140px;animation-delay:-6s}
.b3{width:340px;height:340px;background:#ffe3b3;bottom:-120px;left:20%;animation-delay:-12s}
.b4{width:300px;height:300px;background:#d9ccff;top:55%;left:8%;animation-delay:-18s}
@keyframes drift{
  0%,100%{transform:translate(0,0) scale(1)}
  33%{transform:translate(50px,-40px) scale(1.12)}
  66%{transform:translate(-40px,45px) scale(.92)}
}
#confetti{position:fixed;inset:0;z-index:9999;pointer-events:none}

/* ---------- thanh trên ---------- */
.topbar{
  position:sticky;top:0;z-index:60;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:12px clamp(14px,3vw,32px);
  background:rgba(255,255,255,.72);
  backdrop-filter:blur(18px) saturate(1.5);
  -webkit-backdrop-filter:blur(18px) saturate(1.5);
  border-bottom:1px solid rgba(255,255,255,.7);
  box-shadow:var(--sh-sm);
}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.logo{
  position:relative;width:46px;height:46px;flex:none;border-radius:14px;overflow:hidden;
  background:var(--grad-warm);color:#fff;
  display:grid;place-items:center;
  font-family:'Baloo 2';font-weight:800;font-size:15px;letter-spacing:.5px;
  box-shadow:0 6px 18px rgba(255,107,107,.42);
  animation:pop .6s var(--ease) both;
}
.logo.has-img{background:transparent;box-shadow:none;border-radius:0;overflow:visible}
.logo-img{width:100%;height:100%;object-fit:contain;border-radius:0;display:block}
.logo.has-img .logo-txt{display:none}
.brand-text{display:flex;flex-direction:column;gap:3px;min-width:0}
.brand-text h1{font-size:clamp(15px,2vw,19px);font-weight:700;line-height:1.15;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chip{display:inline-flex;align-items:center;gap:5px;border-radius:999px;font-weight:700;font-size:11px;padding:3px 10px;letter-spacing:.3px}
.brand-links{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.brand-link{
  display:inline-flex;align-items:center;gap:4px;
  font-size:11.5px;font-weight:700;color:var(--ink-soft);text-decoration:none;
  transition:color .2s,transform .2s var(--ease);
}
.brand-link:hover{color:var(--coral-d);transform:translateY(-1px)}
.brand-link span{font-size:10px}
.topbar-right{display:flex;align-items:center;gap:10px}

.progress-wrap{position:relative;width:44px;height:44px;flex:none}
.ring{width:44px;height:44px;transform:rotate(-90deg)}
.ring circle{fill:none;stroke-width:5;stroke-linecap:round}
.ring-bg{stroke:#f0e6f5}
.ring-fg{stroke:var(--mint);stroke-dasharray:119.4;stroke-dashoffset:119.4;transition:stroke-dashoffset .7s var(--ease)}
.progress-text{position:absolute;inset:0;display:grid;place-content:center;line-height:1}
.progress-text b{font-size:13px;font-family:'Baloo 2'}
.progress-text small{font-size:9px;color:var(--ink-soft)}

/* ---------- nút ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  border:0;border-radius:13px;padding:9px 15px;
  font-size:13px;font-weight:700;color:var(--ink);
  background:#fff;box-shadow:var(--sh-sm);cursor:pointer;
  position:relative;overflow:hidden;
  transition:transform .18s var(--ease),box-shadow .18s,background .18s,color .18s;
  text-decoration:none;
}
.btn:hover{transform:translateY(-2px);box-shadow:var(--sh-md)}
.btn:active{transform:translateY(0) scale(.97)}
.btn-ghost{background:rgba(255,255,255,.8);color:var(--ink-soft)}
.btn-ghost:hover{color:var(--ink);background:#fff}
.btn-icon{padding:9px 11px;font-size:15px}
.btn-primary{background:var(--grad-warm);color:#fff;box-shadow:0 8px 22px rgba(255,107,107,.4)}
.btn-primary:hover{box-shadow:0 14px 30px rgba(255,107,107,.5)}
.btn-lg{padding:13px 22px;font-size:15px;border-radius:16px;width:100%}
.btn-done{background:var(--grad-cool);color:#fff;box-shadow:0 8px 22px rgba(62,201,182,.38)}
.btn-done.is-done{background:linear-gradient(135deg,#8ee6d6,#bfe6ff);color:#12594f}
.tick{display:inline-block;transition:transform .3s var(--ease)}
.btn-done.is-done .tick{transform:scale(1.35) rotate(-12deg)}
.shine{position:absolute;top:0;left:-60%;width:40%;height:100%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.55),transparent);
  transform:skewX(-20deg);animation:shine 3.2s ease-in-out infinite}
@keyframes shine{0%,70%{left:-60%}100%{left:130%}}

/* ---------- bố cục ---------- */
.layout{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);
  gap:clamp(16px,2.2vw,30px);
  max-width:1500px;margin:0 auto;
  padding:clamp(16px,2.5vw,30px) clamp(14px,3vw,32px) 60px;
  align-items:start;
}
.col-left{min-width:0;display:flex;flex-direction:column;gap:18px}

/* ---------- thẻ hôm nay ---------- */
.today-card{
  position:relative;overflow:hidden;
  background:var(--grad-warm);color:#fff;
  border-radius:var(--r-lg);padding:22px;
  box-shadow:0 18px 40px rgba(255,107,107,.34);
  animation:rise .6s var(--ease) both;
}
.today-card::after{
  content:'';position:absolute;width:220px;height:220px;border-radius:50%;
  background:rgba(255,255,255,.14);top:-90px;right:-60px;
}
.today-card .btn-primary{background:#fff;color:var(--coral-d);box-shadow:0 8px 20px rgba(0,0,0,.14);margin-top:16px}
.today-label{display:flex;align-items:center;gap:8px;font-size:12px;font-weight:700;opacity:.95;letter-spacing:.4px;text-transform:uppercase}
.pulse-dot{width:8px;height:8px;border-radius:50%;background:#fff;box-shadow:0 0 0 0 rgba(255,255,255,.8);animation:pulse 1.9s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 12px rgba(255,255,255,0)}100%{box-shadow:0 0 0 0 rgba(255,255,255,0)}}
.today-main{display:flex;align-items:center;gap:14px;margin-top:10px;position:relative}
.today-day{font-size:20px;font-weight:600}
.today-day b{font-family:'Baloo 2';font-size:34px;font-weight:800;vertical-align:-3px}
.today-sound{
  margin-left:auto;background:rgba(255,255,255,.22);
  border:2px solid rgba(255,255,255,.45);border-radius:16px;
  padding:4px 16px;font-size:26px;font-weight:800;backdrop-filter:blur(6px);
}
.today-words{margin-top:8px;font-size:14px;font-weight:600;opacity:.95;position:relative}

/* ---------- đầu danh sách ---------- */
.list-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.list-head h2{font-size:17px;font-weight:700}
.seg{display:flex;background:#fff;border-radius:12px;padding:3px;box-shadow:var(--sh-sm)}
.seg-btn{border:0;background:transparent;padding:6px 12px;border-radius:9px;font-size:12px;font-weight:700;color:var(--ink-soft);cursor:pointer;transition:.2s}
.seg-btn.is-on{background:var(--ink);color:#fff}

/* ---------- danh sách bài ---------- */
.lesson-list{list-style:none;display:flex;flex-direction:column;gap:10px}
.lesson-card{
  width:100%;display:flex;align-items:center;gap:14px;text-align:left;
  background:var(--card);border:2px solid transparent;border-radius:var(--r);
  padding:13px 15px;cursor:pointer;box-shadow:var(--sh-sm);
  position:relative;overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s,border-color .22s;
  opacity:0;transform:translateY(14px);
}
.lesson-card.in{opacity:1;transform:none;transition:opacity .5s ease,transform .5s var(--ease),box-shadow .22s,border-color .22s}
.lesson-card:hover{transform:translateY(-3px) scale(1.008);box-shadow:var(--sh-md)}
.lesson-card.is-active{border-color:var(--coral);box-shadow:0 12px 30px rgba(255,107,107,.24)}
.lesson-card.is-active::before{content:'';position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--grad-warm)}
.lesson-card.is-done{background:#f6fdfb}
.lesson-card.is-done .day-num{background:var(--grad-cool);color:#fff;box-shadow:0 5px 14px rgba(62,201,182,.35)}
.lesson-card.no-link,.lesson-card.no-link.in{opacity:.62}

.day-num{
  flex:none;width:44px;height:44px;border-radius:14px;
  background:linear-gradient(135deg,#efe9fb,#f7eefc);color:var(--ink);
  display:grid;place-items:center;line-height:1;
  font-size:19px;font-weight:800;transition:.25s var(--ease);
}
.lesson-card:hover .day-num{transform:rotate(-7deg) scale(1.06)}
.lc-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:4px}
.lc-top{display:flex;align-items:center;gap:7px;flex-wrap:wrap}
.chip-sound{background:linear-gradient(135deg,#fff3d6,#ffe9c2);color:#a86a12;font-size:13px;font-weight:800;padding:2px 11px}
.chip-check{background:linear-gradient(135deg,#e4f0ff,#e9e4ff);color:#4a4bb5}
.chip-day{background:#f3edfa;color:var(--ink-soft)}
.lc-words{font-size:13px;font-weight:600;color:var(--ink-soft);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.lc-q{font-size:12px;color:#a79ebb;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.lc-state{flex:none;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;
  border:2px dashed #e2d8ee;color:transparent;font-size:14px;font-weight:800;transition:.25s var(--ease)}
.lesson-card.is-done .lc-state{border:2px solid var(--mint);background:var(--mint);color:#fff;transform:scale(1.06)}
.lc-play{position:absolute;right:14px;opacity:0;transform:translateX(8px);transition:.25s var(--ease);color:var(--coral);font-size:13px;font-weight:800}
.lesson-card:hover .lc-play{opacity:1;transform:none}
.lesson-card:hover .lc-state{opacity:0}
.lesson-card.is-done:hover .lc-state{opacity:1}
.lesson-card.is-done:hover .lc-play{opacity:0}
.ripple{position:absolute;border-radius:50%;background:rgba(255,107,107,.28);transform:scale(0);animation:ripple .6s ease-out forwards;pointer-events:none}
@keyframes ripple{to{transform:scale(3.6);opacity:0}}

/* ---------- trình phát ---------- */
.col-right{position:sticky;top:82px;min-width:0}
.player-inner{
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border:1px solid #fff;border-radius:var(--r-lg);
  box-shadow:var(--sh-lg);padding:18px;
  animation:rise .6s .1s var(--ease) both;
}
.empty-state{text-align:center;padding:64px 20px}
.empty-emoji{font-size:56px;animation:bob 2.6s ease-in-out infinite;display:inline-block}
@keyframes bob{50%{transform:translateY(-12px) rotate(6deg)}}
.empty-state h3{margin:14px 0 8px;font-size:19px}
.empty-state p{font-size:13.5px;color:var(--ink-soft);max-width:320px;margin:0 auto;line-height:1.6}

.player-body{animation:fadeUp .45s var(--ease) both}
.player-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
.ph-left{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
#pDay{font-size:12px;padding:5px 12px}
#pSound{font-size:15px;padding:4px 14px}
#closePlayer{display:none}

.stage{position:relative;width:100%;aspect-ratio:16/10;border-radius:var(--r);overflow:hidden;
  background:#f4eefa;box-shadow:inset 0 0 0 1px rgba(0,0,0,.04)}
.stage iframe{width:100%;height:100%;border:0;display:block;opacity:0;transition:opacity .5s ease}
.stage.ready iframe{opacity:1}
.stage-skeleton{position:absolute;inset:0;display:grid;place-content:center;gap:12px;justify-items:center;
  font-size:12.5px;font-weight:600;color:var(--ink-soft);background:#f4eefa}
.stage.ready .stage-skeleton{opacity:0;pointer-events:none;transition:opacity .4s}
.sk-bar{width:150px;height:6px;border-radius:99px;background:#e6dbf2;overflow:hidden;position:relative}
.sk-bar::after{content:'';position:absolute;top:0;bottom:0;width:45%;border-radius:99px;background:var(--grad-warm);animation:slide 1.1s ease-in-out infinite}
@keyframes slide{0%{left:-45%}100%{left:100%}}
.stage-fallback{position:absolute;inset:0;display:grid;place-content:center;text-align:center;padding:24px;
  background:#f4eefa;font-size:14px;font-weight:600;color:var(--ink-soft);z-index:2}

.stage-tools{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:12px}
.timer{display:flex;align-items:center;gap:8px;background:#fff;border-radius:13px;padding:4px 12px 4px 4px;box-shadow:var(--sh-sm)}
.timer-text{font-family:'Baloo 2';font-size:15px;font-weight:700;letter-spacing:.5px;min-width:48px;text-align:center}
.timer.running .timer-text{color:var(--coral)}
.timer.done .timer-text{color:var(--mint)}

.detail{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.d-row{display:flex;align-items:center;gap:11px;background:#fff;border-radius:14px;padding:10px 12px;box-shadow:var(--sh-sm);
  animation:fadeUp .45s var(--ease) both}
.d-row:nth-child(2){animation-delay:.06s}
.d-row:nth-child(3){animation-delay:.12s}
.d-key{flex:none;font-size:10.5px;font-weight:800;text-transform:uppercase;letter-spacing:.5px;color:#b0a6c4;width:62px}
.d-val{flex:1;min-width:0;font-size:14px;font-weight:700}
.d-q .d-val{color:var(--sky)}
.d-a .d-val{color:var(--coral-d)}
.speak{flex:none;border:0;width:32px;height:32px;border-radius:10px;cursor:pointer;font-size:14px;
  background:#f6f1fb;transition:.2s var(--ease)}
.speak:hover{background:var(--lemon);transform:scale(1.12)}
.speak.on{animation:wobble .6s ease infinite}
@keyframes wobble{50%{transform:scale(1.16) rotate(8deg)}}

.reps{margin-top:14px;background:#fff;border-radius:14px;padding:11px 14px;box-shadow:var(--sh-sm);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.reps-label{font-size:12.5px;font-weight:700}
.reps-label small{color:var(--ink-soft);font-weight:600}
.reps-dots{display:flex;gap:7px}
.rep{width:26px;height:26px;border-radius:9px;border:2px solid #e8dff3;background:#fff;cursor:pointer;
  font-size:12px;color:#cfc4de;display:grid;place-items:center;transition:.25s var(--ease)}
.rep:hover{transform:translateY(-2px) scale(1.08)}
.rep.on{background:var(--grad-warm);border-color:transparent;color:#fff;box-shadow:0 4px 12px rgba(255,107,107,.36)}

.player-foot{display:flex;align-items:center;gap:9px;margin-top:16px}
.player-foot .btn-done{flex:1}
.player-foot .btn-ghost{font-size:12px;padding:9px 12px}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:var(--sh-sm)}

/* ---------- modal ---------- */
.scrim{position:fixed;inset:0;background:rgba(43,33,64,.45);backdrop-filter:blur(3px);z-index:80;opacity:0;pointer-events:none;transition:opacity .3s}
.scrim.on{opacity:1;pointer-events:auto}
.modal{position:fixed;inset:0;z-index:90;display:grid;place-items:center;padding:20px;pointer-events:none}
.modal-card{
  background:#fff;border-radius:var(--r-lg);padding:26px;max-width:600px;width:100%;
  max-height:82vh;overflow:auto;box-shadow:var(--sh-lg);position:relative;
  opacity:0;transform:translateY(24px) scale(.96);transition:.35s var(--ease);
}
.modal.on{pointer-events:auto}
.modal.on .modal-card{opacity:1;transform:none}
.modal-x{position:absolute;top:14px;right:14px}
.modal-card h3{font-size:20px;margin-bottom:16px;padding-right:40px}
.notes-list{padding-left:0;list-style:none;display:flex;flex-direction:column;gap:11px;counter-reset:n}
.notes-list li{
  counter-increment:n;position:relative;padding:12px 14px 12px 46px;
  background:#fdf9ff;border-radius:14px;font-size:13.5px;line-height:1.65;color:#4b4160;
}
.notes-list li::before{
  content:counter(n);position:absolute;left:12px;top:11px;
  width:24px;height:24px;border-radius:8px;background:var(--grad-warm);color:#fff;
  display:grid;place-items:center;font-family:'Baloo 2';font-weight:800;font-size:13px;
}

/* ---------- toast ---------- */
.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%,80px);z-index:9998;
  background:var(--ink);color:#fff;padding:11px 20px;border-radius:14px;font-size:13px;font-weight:700;
  box-shadow:var(--sh-lg);opacity:0;transition:.4s var(--ease);pointer-events:none}
.toast.on{opacity:1;transform:translate(-50%,0)}

@keyframes rise{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
@keyframes pop{from{opacity:0;transform:scale(.6) rotate(-14deg)}to{opacity:1;transform:none}}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .layout{grid-template-columns:1fr}
  .col-right{
    position:fixed;top:0;right:0;bottom:0;width:min(560px,94vw);z-index:85;
    transform:translateX(105%);transition:transform .45s var(--ease);
    padding:14px;overflow:auto;
  }
  .col-right.open{transform:none}
  .player-inner{animation:none;min-height:100%}
  #closePlayer{display:inline-flex}
  .stage{aspect-ratio:16/11}
}
@media (max-width:520px){
  #notesBtn .lbl{display:none}
  #notesBtn{padding:9px 11px}
  .player-foot{flex-wrap:wrap}
  .player-foot .btn-done{order:-1;width:100%;flex:none}
  .player-foot .btn-ghost{flex:1}
  .d-key{width:52px}
  .today-day b{font-size:28px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}

/* ---------- chân trang ---------- */
.site-foot{
  display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;
  padding:22px 20px 34px;text-align:center;
}
.foot-logo{width:34px;height:34px;object-fit:contain}
.site-foot strong{display:block;font-size:13px;font-family:'Baloo 2';letter-spacing:.3px}
.site-foot span{font-size:12px;color:var(--ink-soft);font-weight:600}
.site-foot a{color:var(--coral-d);text-decoration:none;font-weight:700}
.site-foot a:hover{text-decoration:underline}