:root {
  --canvas: #f6f8ff;
  --surface: #ffffff;
  --surface-soft: #eef3ff;
  --ink: #17213c;
  --muted: #66708a;
  --primary: #1856d8;
  --primary-dark: #1042ab;
  --accent: #ffcc4d;
  --success: #16805b;
  --danger: #c9364e;
  --border: #d9e1f3;
  --shadow: 0 12px 32px rgba(37, 58, 112, .12);
  --radius: 18px;
  --sidebar: 224px;
  color-scheme: light;
  font-family: Inter, ui-rounded, "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--canvas);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--canvas); }
body { min-height: 100dvh; }
button, select, input { font: inherit; }
button, select, .file-button { min-height: 44px; }
button { cursor: pointer; }
button:focus-visible, select:focus-visible, input:focus-visible, a:focus-visible, summary:focus-visible { outline: 3px solid #0b2f75; outline-offset: 3px; box-shadow: 0 0 0 2px white; }
[hidden] { display: none !important; }
.sr-only { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0,0,0,0) !important; white-space: nowrap !important; border: 0 !important; }

.skip-link { position: fixed; left: 12px; top: -80px; z-index: 100; background: var(--ink); color: white; padding: 10px 14px; border-radius: 10px; }
.skip-link:focus { top: 12px; }
.app-shell { min-height: 100dvh; display: grid; grid-template-columns: var(--sidebar) 1fr; }
.sidebar { position: sticky; top: 0; height: 100dvh; padding: 22px 16px; background: linear-gradient(175deg, #123e9b, #10275e); color: white; display: flex; flex-direction: column; gap: 26px; z-index: 20; }
.sidebar-scrim { display: none; }
.brand { display: flex; align-items: center; gap: 11px; }
.brand-mark { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 14px; color: #0f2c6b; background: var(--accent); font-size: 28px; font-weight: 900; transform: rotate(-4deg); }
.brand-copy { display: grid; line-height: 1.1; }
.brand-copy small { margin-top: 5px; opacity: .72; }
.nav-list { display: grid; gap: 8px; }
.nav-item { border: 0; background: transparent; color: #dce7ff; border-radius: 12px; display: flex; align-items: center; gap: 12px; padding: 10px 12px; text-align: left; }
.nav-item:hover, .nav-item.is-active { background: rgba(255,255,255,.13); color: white; }
.nav-item span:first-child { font-size: 20px; width: 25px; text-align: center; }
.sidebar-note { margin-top: auto; padding: 12px; border: 1px solid rgba(255,255,255,.18); border-radius: 12px; font-size: 12px; line-height: 1.45; color: #dce7ff; }
.status-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: #52e5a2; margin-right: 6px; }
.content-column { min-width: 0; min-height: 100dvh; display: grid; grid-template-rows: auto 1fr; }
.topbar { min-height: 72px; padding: 12px clamp(16px, 2.6vw, 36px); display: flex; align-items: center; justify-content: space-between; gap: 16px; border-bottom: 1px solid var(--border); background: rgba(246,248,255,.92); backdrop-filter: blur(12px); z-index: 10; }
.topbar h1 { font-size: clamp(21px, 2vw, 28px); margin: 0; }
.eyebrow { margin: 0 0 3px; color: var(--primary); font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .12em; }
.top-actions { display: flex; align-items: center; gap: 10px; }
.offline-badge { padding: 6px 10px; border-radius: 999px; background: #e5f7ef; color: #126246; font-size: 12px; font-weight: 700; }
.offline-badge.is-offline { background: #fff0d8; color: #8a5000; }
.icon-button { width: 44px; min-height: 44px; border-radius: 12px; border: 1px solid var(--border); background: var(--surface); color: var(--ink); font-weight: 800; }
.mobile-menu { display: none; }
main { min-height: 0; padding: clamp(14px, 2vw, 28px) clamp(14px, 2.6vw, 36px); }
.view { display: none; max-width: 1280px; margin: 0 auto; }
.view.is-active { display: block; }
.hero-card { min-height: 300px; border-radius: 28px; color: white; background: radial-gradient(circle at 78% 20%, rgba(255,204,77,.62), transparent 24%), linear-gradient(135deg, #1856d8, #6f52d9); box-shadow: var(--shadow); padding: clamp(28px, 5vw, 64px); display: grid; grid-template-columns: 1.25fr .75fr; align-items: center; overflow: hidden; }
.hero-card .eyebrow { color: #ffdf87; }
.hero-copy h2 { margin: 6px 0 14px; font-size: clamp(34px, 4.2vw, 62px); line-height: .98; max-width: 720px; }
.hero-copy p:not(.eyebrow) { max-width: 620px; color: #eef3ff; font-size: 17px; line-height: 1.55; }
.hero-art { display: flex; justify-content: center; gap: 14px; transform: rotate(-4deg); }
.mini-card { width: 88px; aspect-ratio: .72; border: 5px solid white; border-radius: 18px; display: grid; place-items: center; color: #17213c; background: var(--accent); font-size: 30px; font-weight: 900; box-shadow: 0 12px 20px rgba(14,24,58,.25); }
.mini-card:nth-child(2) { transform: translateY(30px); background: #75e0b4; }
.mini-card:nth-child(3) { background: #ff8b9e; }
.primary-button, .secondary-button, .danger-button, .text-button, .file-button { border-radius: 12px; border: 1px solid transparent; padding: 10px 16px; font-weight: 800; display: inline-flex; align-items: center; justify-content: center; text-decoration: none; }
.primary-button { color: white; background: var(--primary); }
.primary-button:hover { background: var(--primary-dark); }
.hero-card .primary-button { color: #17213c; background: var(--accent); margin-top: 12px; }
.secondary-button, .file-button { color: var(--primary); background: var(--surface); border-color: #aebee7; }
.danger-button { color: white; background: var(--danger); }
.text-button { background: transparent; color: var(--primary); }
.compact { min-height: 44px; padding: 8px 12px; font-size: 12px; }
.wide { width: 100%; margin-top: 18px; }
button:disabled { opacity: .45; cursor: not-allowed; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 18px; }
.stat-card, .settings-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: 0 8px 22px rgba(37,58,112,.07); padding: 18px; }
.stat-card { display: grid; gap: 4px; }
.stat-card span, .stat-card small { color: var(--muted); }
.stat-card strong { font-size: 28px; }
.info-strip { margin-top: 18px; padding: 14px 18px; border-radius: 14px; background: #fff7d9; border: 1px solid #f2d67a; }
.section-heading { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 18px; }
.section-heading h2 { font-size: clamp(28px, 3vw, 42px); margin: 0; }
.difficulty-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.difficulty-card { position: relative; padding: 24px; text-align: left; background: var(--surface); border: 2px solid var(--border); border-radius: 20px; box-shadow: 0 8px 20px rgba(37,58,112,.06); }
.difficulty-card.is-selected { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(24,86,216,.12); }
.difficulty-card h3 { margin: 8px 0; font-size: 24px; }
.difficulty-card p { color: var(--muted); }
.difficulty-card .pill { display: inline-flex; padding: 5px 9px; background: var(--surface-soft); border-radius: 999px; font-weight: 800; font-size: 12px; }
.game-view.is-active { max-width: none; height: calc(100dvh - 128px); display: grid; grid-template-rows: auto minmax(0,1fr); }
.game-toolbar { display: grid; grid-template-columns: minmax(210px, 1fr) auto auto; align-items: center; gap: 16px; margin-bottom: 10px; }
.game-toolbar h2 { margin: 0; font-size: clamp(20px,2vw,28px); }
.game-metrics { display: flex; gap: 8px; }
.game-metrics > span { min-width: 72px; padding: 7px 9px; border-radius: 12px; text-align: center; background: var(--surface); border: 1px solid var(--border); }
.game-metrics small { display: block; color: var(--muted); font-size: 10px; text-transform: uppercase; }
.game-metrics strong { font-size: 18px; }
.game-actions { display: flex; gap: 6px; }
.game-layout { min-height: 0; display: grid; grid-template-columns: minmax(0,1fr) 236px; gap: 12px; }
.character-grid { min-height: 0; display: grid; grid-template-columns: repeat(10, minmax(0,1fr)); grid-template-rows: repeat(5, minmax(0,1fr)); gap: 6px; }
.character-card { position: relative; min-width: 0; min-height: 0; padding: 0; overflow: hidden; border: 2px solid transparent; border-radius: 10px; background: var(--surface); box-shadow: 0 3px 9px rgba(37,58,112,.12); display: grid; grid-template-rows: minmax(0,1fr) auto; transition: transform .18s ease, opacity .18s ease; }
.character-card:hover { transform: translateY(-2px); border-color: #9eb5ee; }
.character-card img { display: block; width: 100%; height: 100%; min-height: 0; object-fit: cover; }
.character-card span { padding: 3px 2px 4px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: clamp(8px,.68vw,11px); font-weight: 800; }
.character-card.is-down { opacity: .38; filter: grayscale(.9); transform: perspective(500px) rotateY(12deg) scale(.96); }
.character-card.is-down::after { content: "×"; position: absolute; top: 4px; right: 4px; width: 24px; height: 24px; display: grid; place-items: center; border-radius: 50%; color: white; background: #8d1830; font-size: 18px; font-weight: 900; }
.character-card.is-selected { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(24,86,216,.2); }
.question-panel { min-height: 0; overflow: auto; background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 12px; box-shadow: 0 8px 22px rgba(37,58,112,.08); display: flex; flex-direction: column; gap: 8px; }
.question-panel label { font-size: 12px; font-weight: 800; }
.question-panel select { width: 100%; border: 1px solid var(--border); border-radius: 10px; padding: 8px; color: var(--ink); background: white; }
.answer-card { border-radius: 12px; padding: 10px; background: var(--surface-soft); display: grid; gap: 2px; }
.answer-card span { color: var(--muted); font-size: 11px; text-transform: uppercase; }
.answer-card strong { font-size: 16px; }
.answer-card.is-yes { background: #dcf7eb; color: #0b6a49; }
.answer-card.is-no { background: #ffe3e8; color: #9b2038; }
.question-panel details { border-top: 1px solid var(--border); padding-top: 7px; }
.question-panel summary { min-height: 44px; cursor: pointer; font-weight: 800; font-size: 13px; display: flex; align-items: center; }
#history-list { padding-left: 20px; margin: 8px 0; font-size: 13px; line-height: 1.45; color: var(--muted); }
.panel-help { font-size: 12px; line-height: 1.45; color: var(--muted); margin: auto 0 0; }
.pause-overlay { position: fixed; inset: 0; z-index: 50; background: rgba(9,20,50,.76); display: grid; place-items: center; padding: 20px; }
.pause-overlay > div { max-width: 380px; padding: 28px; border-radius: 20px; background: white; text-align: center; }
.result-card { max-width: 680px; margin: 0 auto; text-align: center; padding: clamp(24px,4vw,50px); border-radius: 26px; background: var(--surface); box-shadow: var(--shadow); }
.result-card h2 { font-size: 42px; margin: 4px 0 16px; }
.result-card img { width: 180px; aspect-ratio: 1; border-radius: 50%; object-fit: cover; border: 7px solid var(--accent); }
.result-card h3 { font-size: 28px; margin: 12px 0; }
.result-stats { display: grid; grid-template-columns: repeat(4,1fr); gap: 8px; margin: 18px 0; }
.result-stats div { padding: 10px; border-radius: 12px; background: var(--surface-soft); }
.result-stats small { display: block; color: var(--muted); }
.button-row { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; }
.achievement-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
.achievement-card { padding: 18px; border-radius: 16px; background: var(--surface); border: 1px solid var(--border); }
.achievement-card.is-unlocked { border-color: #56b691; background: #f1fff9; }
.achievement-card .achievement-icon { width: 44px; height: 44px; display: grid; place-items: center; background: var(--surface-soft); border-radius: 14px; font-size: 22px; }
.achievement-card h3 { margin: 12px 0 5px; }
.achievement-card p { color: var(--muted); }
.ranking-list { display: grid; gap: 8px; }
.ranking-row { display: grid; grid-template-columns: 48px minmax(0,1fr) 110px minmax(300px,auto); align-items: center; gap: 10px; padding: 12px 16px; border-radius: 14px; background: var(--surface); border: 1px solid var(--border); }
.ranking-row small { color: var(--muted); }
.ranking-details { display: grid; grid-template-columns: repeat(3,minmax(90px,1fr)); gap: 10px; color: var(--muted); font-size: 13px; }
.empty-state { padding: 40px 20px; text-align: center; color: var(--muted); background: var(--surface); border: 1px dashed #aebee7; border-radius: 18px; }
.settings-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.settings-card h3 { margin-top: 0; }
.settings-card p { color: var(--muted); line-height: 1.55; }
.switch-row { display: flex; justify-content: space-between; align-items: center; gap: 18px; padding: 12px 0; border-top: 1px solid var(--border); }
.switch-row span { display: grid; gap: 3px; }
.switch-row small { color: var(--muted); }
.switch-row input { width: 22px; height: 22px; accent-color: var(--primary); }
.range-row { display: grid; gap: 10px; padding: 12px 0; border-top: 1px solid var(--border); }
.range-row label { display: grid; gap: 3px; }
.range-row small { color: var(--muted); }
.range-row > div { display: grid; grid-template-columns: minmax(0,1fr) 52px; align-items: center; gap: 12px; }
.range-row input { width: 100%; min-height: 44px; accent-color: var(--primary); }
.range-row output { text-align: right; font-weight: 800; }
.button-stack { display: grid; gap: 9px; }
.file-button { position: relative; cursor: pointer; }
.file-button input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.form-message { min-height: 20px; font-weight: 700; }
.mobile-tabs { display: none; }
dialog { width: min(820px, calc(100% - 24px)); max-height: 86dvh; border: 0; border-radius: 22px; padding: 0; box-shadow: var(--shadow); }
dialog::backdrop { background: rgba(9,20,50,.68); }
dialog form { padding: 22px; }
.dialog-heading { display: flex; align-items: center; justify-content: space-between; }
.guess-grid { display: grid; grid-template-columns: repeat(6,1fr); gap: 8px; max-height: 54dvh; overflow: auto; padding: 5px; margin: 12px 0 18px; }
.guess-card { min-width: 0; padding: 0; overflow: hidden; border: 2px solid var(--border); background: white; border-radius: 12px; }
.guess-card.is-selected { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(24,86,216,.18); }
.guess-card img { width: 100%; aspect-ratio: 1; object-fit: cover; display: block; }
.guess-card span { display: block; padding: 5px 2px; font-size: 10px; font-weight: 800; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.preview-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 18px 0; }
.preview-grid div { padding: 12px; border-radius: 12px; background: var(--surface-soft); }
.preview-grid dt { color: var(--muted); font-size: 12px; }
.preview-grid dd { margin: 4px 0 0; font-size: 19px; font-weight: 800; overflow-wrap: anywhere; }
.warning-box { padding: 13px 15px; border: 1px solid #e4b64d; border-radius: 12px; background: #fff7d9; line-height: 1.5; }
.protected-action { display: grid; gap: 12px; margin: 18px 0; }
.acknowledgement { display: flex; align-items: flex-start; gap: 10px; padding: 12px; border: 1px solid var(--border); border-radius: 12px; }
.acknowledgement input { width: 22px; height: 22px; flex: 0 0 auto; accent-color: var(--primary); }
.confirmation-input { min-height: 44px; width: 100%; padding: 10px 12px; border: 1px solid #aebee7; border-radius: 10px; text-transform: uppercase; }
.update-banner { position: fixed; right: 18px; bottom: 18px; z-index: 80; width: min(520px, calc(100% - 36px)); padding: 16px; border: 1px solid #8da7e5; border-radius: 16px; background: white; box-shadow: var(--shadow); display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.update-banner p { margin: 4px 0 0; color: var(--muted); line-height: 1.4; }
.update-actions { display: flex; flex: 0 0 auto; gap: 8px; }
.toast { position: fixed; right: 18px; bottom: 18px; z-index: 100; max-width: 360px; padding: 12px 16px; border-radius: 12px; background: #17213c; color: white; box-shadow: var(--shadow); }

@media (max-width: 1024px) {
  :root { --sidebar: 82px; }
  .brand-copy, .nav-item span:last-child, .sidebar-note { display: none; }
  .brand { justify-content: center; }
  .nav-item { justify-content: center; }
  .game-layout { grid-template-columns: minmax(0,1fr) 214px; }
  .game-toolbar { grid-template-columns: 1fr auto; }
  .game-actions { grid-column: 1 / -1; justify-content: flex-end; }
  .ranking-row { grid-template-columns: 42px minmax(0,1fr) auto; }
  .ranking-details { grid-column: 2 / -1; display: flex; flex-wrap: wrap; gap: 6px 12px; }
}

@media (max-width: 767px) {
  .app-shell { display: block; }
  .sidebar { position: fixed; inset: 0 auto 0 0; width: 250px; transform: translateX(-102%); transition: transform .2s ease; }
  .sidebar.is-open { transform: translateX(0); }
  .sidebar-scrim:not([hidden]) { position: fixed; inset: 0; z-index: 19; display: block; width: 100%; min-height: 100dvh; padding: 0; border: 0; border-radius: 0; background: rgba(9,20,50,.55); }
  body.menu-open { overflow: hidden; }
  .brand-copy, .nav-item span:last-child, .sidebar-note { display: initial; }
  .nav-item { justify-content: flex-start; }
  .mobile-menu { display: inline-grid; place-items: center; }
  .topbar { position: sticky; top: 0; min-height: 64px; }
  .offline-badge { display: none; }
  main { padding-bottom: 76px; }
  .hero-card { grid-template-columns: 1fr; min-height: 0; padding: 26px; }
  .hero-art { display: none; }
  .hero-copy h2 { font-size: 38px; }
  .stats-grid { grid-template-columns: repeat(2,1fr); }
  .difficulty-grid { grid-template-columns: 1fr; }
  .game-view.is-active { height: auto; min-height: calc(100dvh - 150px); display: block; }
  .game-toolbar { grid-template-columns: 1fr; }
  .game-metrics { justify-content: space-between; }
  .game-metrics > span { flex: 1; }
  .game-actions { justify-content: stretch; }
  .game-actions button { flex: 1; }
  .game-layout { display: flex; flex-direction: column; }
  .character-grid { grid-template-columns: repeat(5, minmax(0,1fr)); grid-template-rows: none; gap: 5px; }
  .character-card { min-height: 84px; }
  .character-card span { padding: 4px 2px 5px; font-size: clamp(9px,2.4vw,11px); }
  .question-panel { order: -1; overflow: visible; }
  .result-stats { grid-template-columns: repeat(2,1fr); }
  .achievement-grid, .settings-grid { grid-template-columns: 1fr; }
  .ranking-row { grid-template-columns: 36px minmax(0,1fr) auto; align-items: start; padding: 12px; }
  .ranking-details { grid-column: 2 / -1; display: flex; flex-wrap: wrap; gap: 6px 12px; color: var(--muted); font-size: 12px; }
  .guess-grid { grid-template-columns: repeat(3,1fr); }
  .preview-grid { grid-template-columns: repeat(2,1fr); }
  dialog { max-height: calc(100dvh - 16px); }
  dialog form { max-height: calc(100dvh - 16px); overflow: auto; }
  .update-banner { left: 8px; right: 8px; bottom: calc(82px + env(safe-area-inset-bottom)); width: auto; align-items: stretch; flex-direction: column; gap: 12px; }
  .update-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .mobile-tabs { position: fixed; left: 8px; right: 8px; bottom: calc(8px + env(safe-area-inset-bottom)); z-index: 30; display: grid; grid-template-columns: repeat(4,1fr); gap: 4px; padding: 6px; border: 1px solid var(--border); border-radius: 16px; background: rgba(255,255,255,.95); box-shadow: var(--shadow); }
  .mobile-tabs button { min-height: 44px; border: 0; border-radius: 10px; background: transparent; color: var(--muted); font-size: 11px; font-weight: 800; }
  .mobile-tabs button.is-active { color: white; background: var(--primary); }
}

@media (max-width: 390px) {
  .topbar h1 { font-size: 20px; }
  .stats-grid { gap: 8px; }
  .stat-card { padding: 13px; }
  .character-card { min-height: 74px; }
  .character-grid { grid-template-columns: repeat(4, minmax(0,1fr)); }
  .preview-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}

html.reduce-motion *, html.reduce-motion *::before, html.reduce-motion *::after { transition: none !important; animation: none !important; }

@media (forced-colors: active) {
  .character-card.is-down { outline: 3px solid CanvasText; opacity: 1; }
  .character-card.is-down::after { border: 1px solid CanvasText; }
}