/* =========================================================
   KHÁM PHÁ VIỆT NAM – Trường Tiếng Việt Của Em (CVCEC)
   Bảng màu thương hiệu: be #F4F0EA, than #3A3B3C, rơm #DDAA55, gỗ #C68B59,
   điểm nhấn xanh lá dịu & cam đào.
   ========================================================= */
:root {
  --bg: #F4F0EA;
  --card: #FFFDF8;
  --ink: #3A3B3C;
  --ink-2: #6B6862;
  --line: #E4DCCD;
  --straw: #DDAA55;
  --wood: #C68B59;
  --green: #7FB069;
  --green-d: #4E8A3E;
  --peach: #F4B89A;
  --peach-l: #FCE6DA;
  --sea: #BFE3EC;
  --sea-d: #5FA8C2;
  --gold: #F7C531;
  --gold-d: #D99A00;
  --red: #DA251D;
  --ok: #4E9A3E;
  --no: #D9534F;
  --radius: 18px;
  --shadow: 0 6px 18px rgba(80, 60, 30, .12);
  --font: 'Nunito', 'Arial Rounded MT Bold', 'Segoe UI', system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--font); font-size: 17px; line-height: 1.5;
  overflow-x: hidden;
}
button { font-family: inherit; font-size: inherit; color: inherit; cursor: pointer; }
img { max-width: 100%; }
.emo { font-family: 'Apple Color Emoji', 'Segoe UI Emoji', 'Noto Color Emoji', sans-serif; line-height: 1; }
.hidden { display: none !important; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ---------- Thanh trên cùng ---------- */
.topbar {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 30;
  display: flex; align-items: center; gap: 10px;
  padding: 8px 16px; background: rgba(255, 253, 248, .96);
  border-bottom: 2px solid var(--line); backdrop-filter: blur(6px);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: inherit; min-width: 0; }
.brand img { height: 46px; width: auto; display: block; }
.brand .ttl { display: flex; flex-direction: column; line-height: 1.15; min-width: 0; }
.brand .ttl b { font-size: 19px; font-weight: 900; color: var(--green-d); white-space: nowrap; }
.brand .ttl span { font-size: 13px; color: var(--ink-2); white-space: nowrap; }
.topbar .sp { flex: 1; }
.star-pill {
  display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px;
  background: #FFF6D8; border: 2px solid var(--gold); border-radius: 999px;
  font-weight: 900; font-size: 17px; white-space: nowrap;
}
.star-pill svg { width: 22px; height: 22px; }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 42px; min-width: 42px; padding: 0 12px; border-radius: 999px;
  background: var(--card); border: 2px solid var(--line); font-weight: 800; font-size: 15px;
}
.icon-btn:hover { border-color: var(--straw); }
.icon-btn .emo { font-size: 20px; }
@media (max-width: 720px) {
  .brand .ttl, .icon-btn .lbl { display: none; }
  .brand img { height: 38px; }
  .topbar { gap: 6px; padding: 6px 10px; }
  .icon-btn { padding: 0 9px; }
}

/* ---------- Lời chào & chặng ---------- */
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.hero {
  display: flex; align-items: center; gap: 14px; margin: 16px 0 10px;
}
.hero .mascot { width: 92px; flex: none; animation: bob 2.6s ease-in-out infinite; }
.bubble {
  position: relative; background: var(--card); border: 2px solid var(--line); border-radius: 22px;
  padding: 12px 16px; box-shadow: var(--shadow); font-weight: 700; flex: 1;
}
.bubble::before {
  content: ''; position: absolute; left: -11px; top: 30px; width: 18px; height: 18px;
  background: var(--card); border-left: 2px solid var(--line); border-bottom: 2px solid var(--line);
  transform: rotate(45deg);
}
.bubble h1 { margin: 0 0 2px; font-size: 22px; font-weight: 900; line-height: 1.25; }
.bubble p { margin: 0; color: var(--ink-2); font-weight: 600; }
.chang-row { display: flex; gap: 8px; overflow-x: auto; padding: 4px 0 10px; scrollbar-width: none; }
.chang-row::-webkit-scrollbar { display: none; }
.chip {
  flex: none; display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 999px;
  background: var(--card); border: 2px solid var(--line); font-weight: 800; font-size: 14px; white-space: nowrap;
}
.chip i { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.chip.done { background: #FFF6D8; border-color: var(--gold); }

/* ---------- Bản đồ ---------- */
.map-card {
  position: relative; background: var(--sea); border-radius: 24px; border: 3px solid #fff;
  box-shadow: var(--shadow); overflow: hidden; margin-bottom: 120px;
}
.map-scroll { overflow-x: auto; overflow-y: hidden; -webkit-overflow-scrolling: touch; }
.map-scroll svg { display: block; margin: 0 auto; touch-action: pan-x pan-y; }
.map-tools {
  position: absolute; right: 10px; top: 10px; z-index: 5; display: flex; flex-direction: column; gap: 6px;
}
.map-tools button {
  width: 44px; height: 44px; border-radius: 14px; border: 2px solid var(--line); background: rgba(255, 253, 248, .95);
  font-size: 22px; font-weight: 900; display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow);
}
.map-legend {
  position: absolute; left: 10px; bottom: 10px; z-index: 5; background: rgba(255, 253, 248, .92);
  border-radius: 14px; padding: 6px 10px; font-size: 13px; font-weight: 700; display: flex; gap: 10px; flex-wrap: wrap;
  max-width: calc(100% - 20px);
}
/* nhãn & nút trên bản đồ (SVG) */
.m-land { fill: #CFE6B2; stroke: #5E8F41; stroke-width: 1.4; stroke-linejoin: round; }
.m-nb { fill: #F1EADB; stroke: #CDBFA7; stroke-width: .8; stroke-dasharray: 3 2; }
.m-river { fill: none; stroke: #79BCD9; stroke-width: 1.3; stroke-linecap: round; opacity: .9; }
.m-isl-hs, .m-isl-ts { fill: #E7B43C; stroke: #8A6A1F; stroke-width: .6; }
.m-isl-vn { fill: #8DBE6A; stroke: #5E8F41; stroke-width: .6; }
.m-arch { fill: rgba(247, 197, 49, .10); stroke: #C98E1B; stroke-width: 1.2; stroke-dasharray: 4 3; }
.m-lbl { font-family: var(--font); font-weight: 800; paint-order: stroke; stroke: #fff; stroke-width: 3.2px; stroke-linejoin: round; }
.m-country { font-size: 15px; fill: #9C8E76; font-weight: 700; letter-spacing: 1px; }
.m-sea { font-size: 22px; fill: #3E8BA6; font-style: italic; letter-spacing: 2px; stroke: none; opacity: .85; }
.m-sea.sm { font-size: 13px; letter-spacing: 1px; }
.m-arch-lbl { font-size: 13.5px; fill: #8A5A00; }
.m-arch-sub { font-size: 11px; fill: #8A5A00; font-weight: 700; }
.m-route { fill: none; stroke: #C68B59; stroke-width: 3.2; stroke-linecap: round; stroke-dasharray: 1 8; opacity: .8; }
.m-route.sea { stroke: #2F7FA0; stroke-dasharray: 2 7; }
.m-route.air { stroke: #8A7FB0; stroke-dasharray: 2 9; }
.m-route.done { stroke: #E3A21A; stroke-dasharray: none; stroke-width: 4; opacity: 1; }
.mk { cursor: pointer; }
.mk .ring { fill: none; stroke: #fff; stroke-width: 3; }
.mk .disc { stroke: #fff; stroke-width: 3; filter: url(#mkShadow); }
.mk.locked .disc { fill: #D8D1C3 !important; }
.mk.locked .ico, .mk.locked .ico-svg { opacity: .45; }
.mk .ico-svg { pointer-events: none; overflow: visible; }
.mk .ico { font-size: 17px; text-anchor: middle; dominant-baseline: central; pointer-events: none; }
.mk .num { font-size: 9.5px; font-weight: 900; fill: #fff; text-anchor: middle; dominant-baseline: central; }
.mk .numbg { fill: var(--ink); stroke: #fff; stroke-width: 1.5; }
.mk .lbl { font-size: 12.5px; font-weight: 900; fill: var(--ink); paint-order: stroke; stroke: #fff; stroke-width: 3.5px; stroke-linejoin: round; pointer-events: none; }
.mk.locked .lbl { fill: #8B857A; }
.mk .pulse { fill: none; stroke: var(--gold-d); stroke-width: 3; opacity: 0; }
.mk.current .pulse { animation: pulse 1.8s ease-out infinite; }
.mk.current .disc { stroke: var(--gold); stroke-width: 4; }
.mk:hover .disc, .mk:focus .disc { stroke: var(--gold); }
.mk:focus { outline: none; }
.mk .star { transform-box: fill-box; transform-origin: center; }
.mk.justdone .star { animation: popin .7s cubic-bezier(.2, 1.6, .4, 1) both; }
.mk-leader { stroke: #6B6862; stroke-width: 1; stroke-dasharray: 2 2; }
.mk-dot { fill: #6B6862; }
#mapMascot { transition: transform 1.2s cubic-bezier(.45, .05, .3, 1); pointer-events: none; }
#mapMascot image { animation: bob 2.4s ease-in-out infinite; transform-box: fill-box; }
@keyframes pulse { 0% { r: 17; opacity: .9; } 100% { r: 34; opacity: 0; } }

/* ---------- Thanh "đi tiếp" ---------- */
.nextbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 25;
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  background: linear-gradient(to top, rgba(244, 240, 234, 1) 60%, rgba(244, 240, 234, 0));
  display: flex; justify-content: center; pointer-events: none;
}
.nextbar .btn { pointer-events: auto; max-width: 520px; width: 100%; }

/* ---------- Nút ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 52px; padding: 10px 22px; border-radius: 999px; border: 0;
  font-weight: 900; font-size: 18px; text-decoration: none; line-height: 1.2;
  background: var(--green); color: #fff; box-shadow: 0 4px 0 var(--green-d);
  transition: transform .08s, box-shadow .08s, filter .15s;
}
.btn:active { transform: translateY(3px); box-shadow: 0 1px 0 var(--green-d); }
.btn:hover { filter: brightness(1.05); }
.btn[disabled] { background: #CFC8BB; box-shadow: 0 4px 0 #ABA393; cursor: not-allowed; }
.btn.gold { background: var(--straw); box-shadow: 0 4px 0 var(--wood); color: #3A2A10; }
.btn.peach { background: #F09A6E; box-shadow: 0 4px 0 #C8714A; }
.btn.ghost { background: var(--card); color: var(--ink); border: 2px solid var(--line); box-shadow: 0 4px 0 var(--line); }
.btn.sm { min-height: 42px; font-size: 16px; padding: 8px 16px; }
.btn .emo { font-size: 22px; }
.speak-btn {
  display: inline-flex; align-items: center; justify-content: center; flex: none;
  width: 44px; height: 44px; border-radius: 50%; border: 2px solid var(--line); background: #fff; font-size: 20px;
}
.speak-btn.on { border-color: var(--straw); animation: wiggle .5s ease-in-out 2; }

/* ---------- Màn hình trạm ---------- */
.overlay {
  position: fixed; inset: 0; z-index: 50; background: var(--bg);
  display: flex; flex-direction: column; overflow: hidden;
  animation: slideup .35s ease both;
}
.ov-top {
  display: flex; align-items: center; gap: 10px; padding: 8px 12px;
  background: var(--card); border-bottom: 2px solid var(--line);
}
.ov-top .close { flex: none; }
.ov-title { flex: 1; min-width: 0; }
.ov-title b { display: block; font-size: 18px; font-weight: 900; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ov-title span { font-size: 13px; font-weight: 700; color: var(--ink-2); }
.steps { display: flex; gap: 6px; padding: 10px 12px 0; justify-content: center; flex-wrap: wrap; }
.steps button {
  display: flex; align-items: center; gap: 4px; border: 2px solid var(--line); background: var(--card);
  border-radius: 999px; padding: 4px 10px; font-size: 13px; font-weight: 800; color: var(--ink-2);
}
.steps button .emo { font-size: 15px; }
.steps button.cur { border-color: var(--green); background: #EEF6E8; color: var(--green-d); }
.steps button.ok { border-color: var(--gold); }
.steps button[disabled] { opacity: .5; cursor: default; }
@media (max-width: 640px) { .steps button .t { display: none; } .steps button { padding: 6px 10px; } }
.ov-body { flex: 1; overflow-y: auto; -webkit-overflow-scrolling: touch; padding: 14px 16px 24px; }
.ov-inner { max-width: 860px; margin: 0 auto; }
.ov-foot {
  display: flex; gap: 10px; justify-content: center; align-items: center; padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  background: var(--card); border-top: 2px solid var(--line);
}
.ov-foot .btn { flex: 1; max-width: 420px; }
.copyline { text-align: center; font-size: 11.5px; color: #A39C90; padding: 6px 10px 2px; }
.step-h { display: flex; align-items: center; gap: 10px; margin: 2px 0 12px; }
.step-h h2 { margin: 0; font-size: 22px; font-weight: 900; line-height: 1.25; flex: 1; }
.card { background: var(--card); border: 2px solid var(--line); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }

/* Lên đường */
.travel { text-align: center; }
.travel-road {
  position: relative; height: 150px; margin: 10px 0 16px; border-radius: 22px; overflow: hidden;
  background: linear-gradient(#CFEFFA, #EAF7FB 70%, #DCEFC9 70%);
  border: 2px solid var(--line);
}
.travel-road .path { position: absolute; left: 6%; right: 6%; top: 74%; border-top: 4px dashed var(--wood); }
.travel-road.sea { background: linear-gradient(#CFEFFA, #EAF7FB 58%, #9ED3E6 58%); }
.travel-road.sea .path { border-top-color: #2F7FA0; }
.travel-road .veh { position: absolute; top: 40%; left: 4%; font-size: 64px; animation: drive 2.6s cubic-bezier(.45, .05, .4, 1) forwards; }
.travel-road .dest { position: absolute; right: 5%; top: 30%; font-size: 52px; }
.travel-road .cloud { position: absolute; font-size: 30px; opacity: .8; animation: drift 9s linear infinite; }
.arrive-stamp {
  display: inline-block; margin: 6px auto 12px; padding: 8px 18px; border: 4px solid var(--red); border-radius: 12px;
  color: var(--red); font-weight: 900; font-size: 24px; transform: rotate(-4deg); letter-spacing: 1px;
  animation: stamp .5s 2.4s cubic-bezier(.2, 1.6, .4, 1) both;
}
.travel p { font-size: 19px; font-weight: 700; max-width: 640px; margin: 0 auto 8px; }
@keyframes drive { 0% { left: 4%; } 100% { left: 70%; } }
@keyframes drift { from { transform: translateX(-30px); } to { transform: translateX(60px); } }
@keyframes stamp { from { transform: scale(2.4) rotate(-4deg); opacity: 0; } to { transform: scale(1) rotate(-4deg); opacity: 1; } }

/* Bưu thiếp */
.postcard { position: relative; border-radius: 22px; overflow: hidden; border: 6px solid #fff; box-shadow: var(--shadow); background: #fff; }
.postcard svg { display: block; width: 100%; height: auto; }
.postcard .pc-mascot { position: absolute; right: 2%; bottom: 0; width: 22%; max-width: 150px; filter: drop-shadow(0 4px 6px rgba(0, 0, 0, .2)); }
.postcard .pc-stamp {
  position: absolute; left: 12px; top: 12px; background: rgba(255, 255, 255, .92); border-radius: 12px; padding: 6px 10px;
  font-weight: 900; font-size: 14px; display: flex; gap: 6px; align-items: center;
}
.pc-cuc { position: absolute; right: 12px; top: 12px; background: var(--red); color: #fff; border-radius: 12px; padding: 6px 10px; font-weight: 900; font-size: 14px; }
.story { display: flex; gap: 12px; align-items: flex-start; margin-top: 14px; }
.story p { margin: 0; font-size: 19px; font-weight: 700; }
.placeline { margin-top: 10px; font-weight: 800; color: var(--ink-2); font-size: 15px; }

/* Nhặt chữ */
.word-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
@media (min-width: 760px) { .word-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.word-card {
  position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px;
  min-height: 160px; padding: 14px 8px; border-radius: 20px; border: 3px solid var(--line); background: var(--card);
  box-shadow: 0 5px 0 var(--line); transition: transform .12s;
}
.svgi { display: inline-flex; align-items: center; justify-content: center; line-height: 1; }
.svgi svg { width: 1em; height: 1em; display: block; }
.word-card .emo, .word-card .svgi { font-size: 62px; }
.word-card .svgi svg { width: 64px; height: 64px; }
.word-card b { font-size: 24px; font-weight: 900; }
.word-card.heard { border-color: var(--green); box-shadow: 0 5px 0 var(--green-d); }
.word-card.heard::after { content: '✓'; position: absolute; top: 8px; right: 12px; color: var(--green-d); font-weight: 900; font-size: 22px; }
.word-card:active { transform: translateY(3px); }
.hint { text-align: center; color: var(--ink-2); font-weight: 700; margin: 12px 0 0; }

/* Ẩm thực */
.food { display: grid; gap: 14px; }
@media (min-width: 760px) { .food { grid-template-columns: 1fr 1fr; } }
.food .big { font-size: 80px; text-align: center; }
.food h3 { margin: 4px 0; font-size: 22px; font-weight: 900; text-align: center; }
.food p { margin: 0; font-size: 18px; font-weight: 600; }
.flip { cursor: pointer; text-align: center; background: var(--peach-l); border-color: var(--peach); min-height: 200px; display: flex; flex-direction: column; justify-content: center; align-items: center; }
.flip .q { font-size: 56px; }
.flip.open { background: #FFF6D8; border-color: var(--gold); cursor: default; }

/* Đố vui */
.quiz-q { font-size: 21px; font-weight: 900; margin: 6px 0 14px; }
.opts { display: grid; gap: 10px; }
.opt {
  display: flex; align-items: center; gap: 10px; text-align: left; width: 100%;
  min-height: 56px; padding: 10px 16px; border-radius: 16px; border: 3px solid var(--line); background: var(--card);
  font-weight: 800; font-size: 19px; box-shadow: 0 4px 0 var(--line);
}
.opt .k { flex: none; width: 30px; height: 30px; border-radius: 50%; background: var(--bg); display: flex; align-items: center; justify-content: center; font-weight: 900; font-size: 15px; }
.opt.right { border-color: var(--ok); background: #EAF6E4; box-shadow: 0 4px 0 var(--ok); }
.opt.wrong { border-color: var(--no); background: #FCEAEA; box-shadow: 0 4px 0 var(--no); animation: shake .4s; }
.opt[disabled] { cursor: default; }
.qprog { display: flex; gap: 6px; justify-content: center; margin-bottom: 8px; }
.qprog i { width: 14px; height: 14px; border-radius: 50%; background: var(--line); }
.qprog i.ok { background: var(--ok); }
.qprog i.no { background: var(--no); }
.qprog i.cur { outline: 3px solid var(--straw); }

/* Nhận sao */
.reward { text-align: center; padding: 10px 0; }
.reward .bigstar { width: 180px; height: 180px; animation: starin 1s cubic-bezier(.2, 1.5, .4, 1) both, glow 2s 1s ease-in-out infinite; }
.reward h2 { font-size: 28px; margin: 6px 0; font-weight: 900; }
.reward p { font-size: 19px; font-weight: 700; margin: 0 0 10px; }
.badge-new { display: inline-flex; align-items: center; gap: 8px; margin: 6px; padding: 8px 14px; border-radius: 999px; background: #FFF6D8; border: 2px solid var(--gold); font-weight: 900; animation: popin .6s .6s both; }
.reward .acts { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 14px; }
@keyframes starin { 0% { transform: scale(0) rotate(-180deg); } 100% { transform: scale(1) rotate(0); } }
@keyframes glow { 0%, 100% { filter: drop-shadow(0 0 6px rgba(247, 197, 49, .6)); } 50% { filter: drop-shadow(0 0 22px rgba(247, 197, 49, 1)); } }

/* ---------- Trò chơi ---------- */
.g-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.g-head .say { flex: 1; font-size: 20px; font-weight: 900; background: var(--card); border: 2px solid var(--line); border-radius: 16px; padding: 10px 14px; min-height: 52px; display: flex; align-items: center; }
.g-stage { position: relative; border-radius: 20px; overflow: hidden; border: 3px solid #fff; box-shadow: var(--shadow); background: #EAF7FB; user-select: none; -webkit-user-select: none; }
.g-row { display: grid; gap: 14px; align-items: center; }
#gameRoot > .g-stage, #gameRoot > .caption, #gameRoot > .g-opts, #gameRoot > .card, #gameRoot > .match-cols, #gameRoot > .meaning { max-width: 720px; margin-left: auto; margin-right: auto; }
.gong-row { max-width: 600px; margin: 0 auto; }
@media (min-width: 760px) { .g-row { grid-template-columns: 1fr 1fr; } }
.g-pic { text-align: center; font-size: 90px; line-height: 1.1; padding: 8px 0; }
.g-opts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.g-opts.two { grid-template-columns: 1fr 1fr; }
.g-opts .opt { justify-content: center; text-align: center; font-size: 24px; }
.g-msg { text-align: center; font-weight: 900; font-size: 20px; min-height: 30px; margin: 10px 0 0; }
.g-msg.ok { color: var(--ok); }
.g-msg.no { color: var(--no); }
.g-done { text-align: center; padding: 18px; }
.g-done .emo { font-size: 64px; display: block; animation: popin .6s both; }
.g-done b { display: block; font-size: 24px; font-weight: 900; margin: 6px 0; }
.tiles { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.tile {
  display: inline-flex; align-items: center; gap: 8px; min-height: 54px; padding: 8px 16px; border-radius: 16px;
  border: 3px solid var(--line); background: var(--card); font-weight: 900; font-size: 20px; box-shadow: 0 4px 0 var(--line);
}
.tile .emo { font-size: 28px; }
.tile.used { visibility: hidden; }
.tile.sel { border-color: var(--straw); background: #FFF6D8; box-shadow: 0 4px 0 var(--wood); }
.tile.matched { border-color: var(--ok); background: #EAF6E4; box-shadow: 0 4px 0 var(--ok); opacity: .85; }
.tile.wrong { animation: shake .4s; border-color: var(--no); }
.slots { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; min-height: 64px; padding: 10px; border: 3px dashed var(--line); border-radius: 18px; margin-bottom: 12px; background: rgba(255, 255, 255, .5); }
.slots .tile { box-shadow: none; border-color: var(--green); background: #EEF6E8; }
.slots .tile .n { background: var(--green-d); color: #fff; border-radius: 50%; width: 24px; height: 24px; font-size: 13px; display: inline-flex; align-items: center; justify-content: center; }
.match-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.match-cols .col { display: grid; gap: 10px; align-content: start; }
.match-cols .tile { width: 100%; justify-content: center; }
.bills { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.bill {
  width: 122px; height: 62px; border-radius: 10px; border: 3px solid rgba(0, 0, 0, .15); position: relative; color: #fff;
  font-weight: 900; font-size: 19px; display: flex; flex-direction: column; align-items: center; justify-content: center; line-height: 1.05;
  box-shadow: 0 4px 0 rgba(0, 0, 0, .15); text-shadow: 0 1px 0 rgba(0, 0, 0, .25);
}
.bill small { font-size: 12px; font-weight: 800; opacity: .9; }
.bill.mini { width: 88px; height: 46px; font-size: 15px; }
.tray { min-height: 70px; display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; align-items: center; border: 3px dashed var(--line); border-radius: 16px; padding: 8px; margin: 12px 0; background: rgba(255, 255, 255, .6); }
.price-card { display: flex; align-items: center; gap: 14px; justify-content: center; }
.price-card .emo, .price-card .svgi { font-size: 72px; }
.price-tag { background: #fff; border: 3px solid var(--straw); border-radius: 14px; padding: 6px 14px; font-weight: 900; font-size: 24px; }
.gong { border-radius: 50%; border: 0; background: none; padding: 0; transition: transform .1s; }
.gong svg { width: 100%; height: auto; display: block; }
.gong.lit { transform: scale(1.12); filter: drop-shadow(0 0 16px rgba(247, 197, 49, .95)); }
.gong-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; padding: 16px; }
.scatter { position: relative; width: 100%; aspect-ratio: 16 / 10; }
.scatter .it { position: absolute; transform: translate(-50%, -50%); font-size: clamp(34px, 7vw, 54px); background: none; border: 0; padding: 4px; line-height: 1; transition: transform .25s, opacity .3s; }
.scatter .it:active { transform: translate(-50%, -50%) scale(.9); }
.scatter .it.got { transform: translate(-50%, -50%) scale(1.3); opacity: 0; pointer-events: none; }
.scatter .it.wob { animation: wob .4s; }
.scatter .it .cnt { position: absolute; top: -4px; right: -4px; background: var(--ink); color: #fff; font: 900 13px var(--font); border-radius: 999px; min-width: 22px; height: 22px; display: flex; align-items: center; justify-content: center; }
.counter { display: inline-flex; gap: 6px; align-items: center; background: #fff; border-radius: 999px; padding: 4px 12px; font-weight: 900; }
@keyframes wob { 0%, 100% { margin-left: 0; } 25% { margin-left: -6px; } 75% { margin-left: 6px; } }

/* ---------- Hộp thoại ---------- */
.modal-back {
  position: fixed; inset: 0; z-index: 80; background: rgba(40, 32, 20, .45);
  display: flex; align-items: center; justify-content: center; padding: 16px; animation: fade .2s both;
}
.modal {
  background: var(--card); border-radius: 24px; max-width: 640px; width: 100%; max-height: calc(100vh - 32px);
  overflow-y: auto; padding: 20px; box-shadow: 0 20px 50px rgba(0, 0, 0, .25); position: relative; animation: popin .35s both;
}
.modal.wide { max-width: 960px; }
.modal h2 { margin: 0 40px 10px 0; font-size: 24px; font-weight: 900; }
.modal .x { position: absolute; right: 12px; top: 12px; width: 42px; height: 42px; border-radius: 50%; border: 2px solid var(--line); background: #fff; font-size: 20px; font-weight: 900; }
.modal p { font-size: 17px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; }
.field { display: grid; gap: 6px; margin: 10px 0; font-weight: 800; }
.field input { width: 100%; min-width: 0; font: inherit; font-size: 20px; padding: 10px 14px; border-radius: 14px; border: 2px solid var(--line); background: #fff; }
.field input:focus { outline: 3px solid var(--straw); border-color: var(--straw); }
.welcome { text-align: center; }
.welcome img { width: 140px; animation: bob 2.6s ease-in-out infinite; }
.pass-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.stamp {
  border: 3px dashed var(--line); border-radius: 18px; padding: 10px; text-align: center; min-height: 170px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; background: #fff;
}
.stamp .ic { font-size: 40px; }
.stamp b { font-size: 15px; font-weight: 900; line-height: 1.2; }
.stamp small { font-size: 12px; color: var(--ink-2); font-weight: 700; }
.stamp .w { font-size: 12.5px; font-weight: 700; color: var(--green-d); }
.stamp.got { border-style: solid; transform: rotate(-1.5deg); }
.stamp.got:nth-child(2n) { transform: rotate(1.5deg); }
.stamp.no { color: #B5AE9F; }
.stamp.no .ic { filter: grayscale(1); opacity: .35; }
.badges { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.badge { text-align: center; border: 3px solid var(--line); border-radius: 20px; padding: 12px 8px; background: #fff; }
.badge .md { width: 76px; height: 76px; margin: 0 auto 6px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 38px; border: 4px solid #fff; box-shadow: 0 0 0 3px var(--line); }
.badge b { display: block; font-size: 15px; font-weight: 900; }
.badge small { font-size: 12.5px; color: var(--ink-2); font-weight: 700; }
.badge.no .md { filter: grayscale(1); opacity: .35; }
.badge.got { border-color: var(--gold); background: #FFFBEA; }
.toast {
  position: fixed; left: 50%; bottom: 96px; transform: translateX(-50%); z-index: 120; background: var(--ink); color: #fff;
  padding: 12px 18px; border-radius: 16px; font-weight: 800; max-width: calc(100% - 32px); text-align: center; animation: popin .3s both;
}
.flystar { position: fixed; z-index: 200; width: 70px; height: 70px; pointer-events: none; transition: transform 1.1s cubic-bezier(.5, -0.2, .4, 1), opacity .3s 1s; }

/* Bằng khen */
.cert {
  position: relative; background: #FFFDF6; border: 10px double var(--straw); border-radius: 18px; padding: 26px 24px; text-align: center;
  background-image: radial-gradient(circle at 10% 10%, #FFF3D4 0 80px, transparent 81px), radial-gradient(circle at 90% 90%, #EAF4E1 0 90px, transparent 91px);
}
.cert .logo { height: 54px; }
.cert h1 { font-size: 34px; margin: 6px 0 2px; font-weight: 900; color: var(--red); letter-spacing: 1px; }
.cert .nm { font-size: 34px; font-weight: 900; color: var(--green-d); border-bottom: 3px dotted var(--straw); display: inline-block; min-width: 60%; padding: 0 10px; margin: 8px 0; }
.cert p { font-size: 18px; font-weight: 700; margin: 6px 0; }
.cert .mini svg { width: 220px; height: auto; }
.cert .sig { display: flex; justify-content: space-between; align-items: flex-end; margin-top: 10px; font-weight: 800; }
.cert .sig img { width: 80px; }
.pc-canvas { width: 100%; height: auto; border-radius: 16px; border: 2px solid var(--line); }

/* ---------- Chân trang ---------- */
footer { text-align: center; font-size: 13px; color: #9A9384; padding: 18px 16px 120px; }
footer a { color: inherit; }

/* ---------- Hiệu ứng ---------- */
@keyframes bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
@keyframes popin { 0% { transform: scale(.6); opacity: 0; } 100% { transform: scale(1); opacity: 1; } }
@keyframes shake { 0%, 100% { transform: translateX(0); } 20% { transform: translateX(-8px); } 40% { transform: translateX(8px); } 60% { transform: translateX(-5px); } 80% { transform: translateX(5px); } }
@keyframes wiggle { 0%, 100% { transform: rotate(0); } 25% { transform: rotate(-10deg); } 75% { transform: rotate(10deg); } }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideup { from { transform: translateY(30px); opacity: 0; } to { transform: none; opacity: 1; } }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

/* ---------- In bằng khen ---------- */
@media print {
  @page { size: A4 landscape; margin: 10mm; }
  body { background: #fff; }
  body > *:not(#printArea) { display: none !important; }
  #printArea { display: block !important; }
  .cert { border-width: 10px; }
}
#printArea { display: none; }

/* =========================================================
   Phần mới: phim, ghi nhớ, thẻ từ, nút tiếng Anh, câu đố có gợi ý
   ========================================================= */
.hint-line { display: flex; align-items: center; gap: 10px; margin: 0 0 12px; font-weight: 700; color: var(--ink-2); font-size: 17px; }
.hint-line .speak-btn { width: 40px; height: 40px; font-size: 18px; }
.crow { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; justify-content: center; margin-top: 10px; }

/* Nút EN – giải thích bằng tiếng Anh */
.en-wrap { margin: 10px 0; display: flex; flex-direction: column; align-items: flex-start; gap: 8px; }
.en-wrap.inline { margin: 6px 0 0; }
.en-btn {
  display: inline-flex; align-items: center; gap: 6px; border: 2px solid #9CC3D6; background: #EEF7FB; color: #2E6F8A;
  border-radius: 999px; padding: 4px 12px 4px 4px; font-weight: 800; font-size: 14px; min-height: 34px;
}
.en-btn b { background: #2E6F8A; color: #fff; border-radius: 999px; padding: 2px 8px; font-size: 12px; letter-spacing: .5px; }
.en-box { background: #EEF7FB; border: 2px solid #9CC3D6; border-radius: 14px; padding: 10px 14px; font-size: 16px; font-weight: 600; color: #24546A; max-width: 760px; line-height: 1.45; }

/* Phim */
.vplayer { border-radius: 22px; overflow: hidden; border: 5px solid #fff; box-shadow: var(--shadow); background: #1E2A33; }
.vstage { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: #CFEFFA; }
.vscene { position: absolute; inset: 0; }
.vscene .kb { position: absolute; inset: 0; }
.vscene .kb svg { width: 100%; height: 100%; display: block; object-fit: cover; }
.vscene .kb0 { animation: kb0 9s ease-in-out both; }
.vscene .kb1 { animation: kb1 9s ease-in-out both; }
.vscene .kb2 { animation: kb2 9s ease-in-out both; }
@keyframes kb0 { from { transform: scale(1.02); } to { transform: scale(1.14) translate(-2%, 1%); } }
@keyframes kb1 { from { transform: scale(1.14) translate(2%, 0); } to { transform: scale(1.04); } }
@keyframes kb2 { from { transform: scale(1.04) translate(0, 2%); } to { transform: scale(1.12) translate(2%, -1%); } }
.vscene .travel-road .veh { top: 34%; font-size: clamp(44px, 9vw, 80px); animation-duration: 6s; }
.vscene .travel-road .dest { font-size: clamp(40px, 8vw, 70px); }
.vplace { position: absolute; left: 12px; top: 12px; background: rgba(255, 255, 255, .92); border-radius: 12px; padding: 4px 10px; font-weight: 900; font-size: 14px; }
.vmascot { position: absolute; right: 2%; bottom: 14%; width: 18%; max-width: 130px; filter: drop-shadow(0 4px 6px rgba(0, 0, 0, .25)); animation: bob 2.6s ease-in-out infinite; pointer-events: none; }
.vsub {
  position: absolute; left: 4%; right: 22%; bottom: 4%; background: rgba(30, 30, 30, .78); color: #fff; border-radius: 12px;
  padding: 8px 12px; font-weight: 800; font-size: clamp(15px, 2.3vw, 21px); line-height: 1.35; min-height: 1em;
}
.vsub:empty { display: none; }
.vbig { position: absolute; inset: 0; margin: auto; width: 84px; height: 84px; border-radius: 50%; border: 0; background: rgba(255, 255, 255, .92); font-size: 40px; font-weight: 900; box-shadow: var(--shadow); }
.vctrl { display: flex; align-items: center; gap: 8px; padding: 8px 10px; background: #26343E; }
.vbtn { width: 44px; height: 40px; border: 0; border-radius: 12px; background: #3A4B57; color: #fff; font-size: 18px; }
.vbtn.main { width: 54px; background: var(--green); }
.vdots { display: flex; gap: 5px; flex-wrap: wrap; margin-left: 6px; }
.vdots i { width: 12px; height: 12px; border-radius: 50%; background: #4C5D69; }
.vdots i.ok { background: var(--gold); }
.vdots i.cur { background: #fff; }
.board { position: absolute; inset: 6% 6% 22%; background: #2F5D3F; border: 8px solid #8A5A34; border-radius: 12px; color: #fff; padding: 12px 18px; overflow: auto; }
.board b { display: block; font-size: clamp(16px, 2.6vw, 24px); margin-bottom: 6px; color: #FFE27A; }
.board ol { margin: 0; padding-left: 0; list-style: none; display: grid; gap: 6px; }
.board li { display: flex; gap: 8px; align-items: flex-start; font-weight: 800; font-size: clamp(14px, 2.2vw, 19px); line-height: 1.3; opacity: .82; padding: 2px 6px; border-radius: 8px; }
.board li.on { opacity: 1; background: rgba(255, 226, 122, .2); outline: 2px solid #FFE27A; }
.board li .emo, .board li .svgi { font-size: 1.3em; }
.board li .svgi svg { width: 1.3em; height: 1.3em; }
.vfile { width: 100%; border-radius: 18px; background: #000; display: block; aspect-ratio: 16 / 9; }
.vwait { margin: 8px auto 0; width: fit-content; padding: 6px 14px; border-radius: 999px; background: var(--card, #fff); border: 2px solid var(--straw); font-weight: 800; font-size: 15px; }

/* Ghi nhớ */
.keys { display: grid; gap: 12px; }
@media (min-width: 760px) { .keys { grid-template-columns: 1fr 1fr; } }
.keycard {
  display: flex; gap: 12px; align-items: flex-start; padding: 14px; border-radius: 18px; background: var(--card);
  border: 3px solid var(--line); box-shadow: 0 4px 0 var(--line); cursor: pointer; transition: transform .1s;
}
.keycard .kic { flex: none; width: 54px; height: 54px; border-radius: 14px; background: #FFF6D8; display: flex; align-items: center; justify-content: center; font-size: 30px; }
.keycard .kic .svgi svg { width: 44px; height: 44px; }
.keycard .ktx { min-width: 0; }
.keycard b { font-size: 18px; line-height: 1.35; }
.keycard.heard { border-color: var(--green); box-shadow: 0 4px 0 var(--green-d); }
.keycard.on { outline: 4px solid var(--gold); }
.keycard:focus-visible { outline: 4px solid var(--straw); }

/* Thẻ từ lật */
.flash { perspective: 900px; min-height: 190px; cursor: pointer; }
.flash .fi { position: relative; width: 100%; height: 100%; min-height: 190px; transition: transform .5s; transform-style: preserve-3d; }
.flash.flipped .fi { transform: rotateY(180deg); }
.flash .ff, .flash .fb {
  position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden; border-radius: 20px; border: 3px solid var(--line);
  background: var(--card); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; padding: 12px; text-align: center; box-shadow: 0 5px 0 var(--line);
}
.flash .ff .emo, .flash .ff .svgi { font-size: 58px; }
.flash .ff .svgi svg { width: 74px; height: 74px; margin: -6px 0; }
.flash .ff b { font-size: 23px; font-weight: 900; }
.flash .ff small { font-size: 12px; color: #A39C90; font-weight: 700; }
.flash .fb { transform: rotateY(180deg); background: #FFFBEA; border-color: var(--gold); }
.flash .fb b { font-size: 22px; color: var(--green-d); }
.flash .fb p { margin: 0; font-size: 16px; font-weight: 700; }
.fen { display: inline-flex; gap: 6px; align-items: center; font-size: 14px; font-weight: 700; color: #24546A; background: #EEF7FB; border: 2px solid #9CC3D6; border-radius: 999px; padding: 2px 10px 2px 3px; }
.fen span { background: #2E6F8A; color: #fff; border-radius: 999px; padding: 1px 6px; font-size: 11px; font-weight: 900; }
.flash:focus-visible .ff, .flash:focus-visible .fb { outline: 4px solid var(--straw); }

/* Câu đố */
.qhead { display: flex; gap: 10px; align-items: flex-start; }
.qhead .quiz-q { flex: 1; margin: 2px 0 8px; }
.qtools { display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-start; margin-bottom: 12px; }
.qtools .en-wrap { margin: 0; }
.chipbtn { border: 2px solid var(--line); background: #fff; border-radius: 999px; padding: 6px 14px; font-weight: 800; font-size: 15px; min-height: 36px; }
.chipbtn:hover { border-color: var(--straw); }
.qhint { display: flex; gap: 10px; align-items: center; background: #FFF6D8; border: 2px dashed var(--gold); border-radius: 14px; padding: 10px 12px; margin-bottom: 12px; font-weight: 700; }
.qhint .emo, .qhint .svgi { font-size: 26px; }
.qhint .svgi svg { width: 28px; height: 28px; }
.qwhy { margin-top: 12px; border-radius: 16px; padding: 12px 14px; animation: popin .3s both; }
.qwhy.ok { background: #EAF6E4; border: 2px solid var(--ok); }
.qwhy.no { background: #FFF6D8; border: 2px solid var(--gold); }
.qwhy b { font-size: 18px; }
.qwhy p { margin: 6px 0 0; font-size: 17px; font-weight: 700; }
.qwhy .crow { justify-content: flex-start; }
.opt.reading { outline: 4px solid var(--straw); }
.vbig { inset: auto; right: 4%; top: 6%; width: 64px; height: 64px; font-size: 32px; }
.vsub { position: static; border-radius: 0; background: #1E2A33; color: #fff; font-size: clamp(16px, 2.1vw, 21px); padding: 10px 14px; min-height: 3.4em; display: flex; align-items: center; }
.vsub:empty { display: flex; }
.vmascot { bottom: 3%; }
@media (max-width: 640px) { .vmascot { width: 22%; } }