:root {
  color-scheme: dark;
  --felt: #17473b;
  --felt-deep: #0d2d26;
  --cream: #f6f0e4;
  --ink: #10251f;
  --gold: #e3b65b;
  --gold-soft: #f3d796;
  --red: #b93643;
  --muted: rgba(246, 240, 228, .68);
  --line: rgba(246, 240, 228, .16);
  --card-w: clamp(56px, 8vw, 92px);
  --card-h: calc(var(--card-w) * 1.42);
  --game-font: "europa", "DM Sans", ui-sans-serif, system-ui, sans-serif;
  font-family: var(--game-font);
}

* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; min-height: 100vh; background: var(--felt-deep); color: var(--cream); }
button { font: inherit; }

.app-shell {
  min-height: 100vh;
  background:
    linear-gradient(180deg, rgba(8,42,34,.20), rgba(6,32,27,.82)),
    url("assets/nature-lake.svg") center / cover fixed no-repeat;
  position: relative;
  overflow: hidden;
}

.app-shell[data-theme="sunset"] {
  background:
    linear-gradient(180deg, rgba(89,32,56,.08), rgba(61,26,42,.78)),
    linear-gradient(105deg, rgba(255,112,78,.46), rgba(107,53,124,.18)),
    url("assets/nature-lake.svg") center / cover fixed no-repeat;
}

.app-shell[data-theme="night"] {
  background:
    linear-gradient(180deg, rgba(9,24,62,.58), rgba(3,14,36,.90)),
    url("assets/nature-lake.svg") center / cover fixed no-repeat;
}

.app-shell::before {
  content: ""; position: fixed; inset: 0; opacity: .18; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80' viewBox='0 0 80 80'%3E%3Cpath d='M40 8 52 20 40 32 28 20Z' fill='none' stroke='%23fff' stroke-opacity='.12'/%3E%3C/svg%3E");
}

.topbar { height: 72px; display: flex; align-items: center; gap: 18px; padding: 0 clamp(18px, 4vw, 56px); border-bottom: 1px solid var(--line); position: relative; z-index: 20; backdrop-filter: blur(8px); }
.brand { font-family: var(--game-font); font-size: clamp(18px, 2vw, 23px); font-weight: 800; letter-spacing: -.035em; }
.brand-mark { color: var(--gold); margin-right: 9px; }
.topbar-spacer { flex: 1; }
.stat { min-width: 70px; }
.stat-label { display: block; font-size: 10px; text-transform: uppercase; letter-spacing: .13em; color: var(--muted); }
.stat-value { font-variant-numeric: tabular-nums; font-weight: 600; }

.icon-btn, .hint-btn, .primary-btn, .ghost-btn, .mode-card { border: 0; color: inherit; cursor: pointer; }
.icon-btn { width: 40px; height: 40px; border: 1px solid var(--line); border-radius: 50%; background: rgba(255,255,255,.06); display: grid; place-items: center; transition: .2s; }
.icon-btn:hover:not(:disabled) { background: rgba(255,255,255,.13); transform: translateY(-1px); }
.icon-btn:disabled { opacity: .35; cursor: default; }
.hint-btn { height: 40px; min-width: 58px; padding: 0 13px; border: 1px solid var(--gold); border-radius: 999px; background: rgba(227,182,91,.13); color: var(--gold-soft); font-size: 12px; font-weight: 800; letter-spacing: .02em; transition: .2s; }
.hint-btn:hover { background: var(--gold); color: #2b261a; transform: translateY(-1px); }
.pause-btn { height: 40px; padding: 0 14px; border: 1px solid var(--gold); border-radius: 999px; background: rgba(227,182,91,.16); color: var(--gold-soft); display: inline-flex; align-items: center; gap: 7px; font-weight: 800; cursor: pointer; }
.pause-btn:hover { background: var(--gold); color: #2b261a; transform: translateY(-1px); }
.primary-btn, .ghost-btn { padding: 12px 18px; border-radius: 12px; font-weight: 700; }
.primary-btn { background: var(--gold); color: #2b261a; box-shadow: 0 8px 24px rgba(0,0,0,.2); }
.ghost-btn { background: rgba(255,255,255,.08); border: 1px solid var(--line); }

.home { width: min(1120px, 100%); margin: auto; padding: clamp(46px, 8vw, 100px) 24px 60px; position: relative; z-index: 2; }
.eyebrow { color: var(--gold-soft); text-transform: uppercase; letter-spacing: .18em; font-size: 11px; font-weight: 700; }
.hero h1 { font-family: var(--game-font); font-size: clamp(42px, 7.5vw, 88px); max-width: 900px; margin: 12px 0 16px; font-weight: 800; line-height: .98; letter-spacing: -.065em; }
.hero p { color: var(--muted); font-size: clamp(16px, 2vw, 20px); max-width: 610px; line-height: 1.6; }
.mode-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 54px; }
.mode-card { text-align: left; min-height: 270px; border-radius: 24px; padding: 26px; background: linear-gradient(145deg, rgba(16,61,50,.82), rgba(8,38,32,.72)); border: 1px solid rgba(255,255,255,.24); box-shadow: 0 18px 45px rgba(0,0,0,.18); position: relative; overflow: hidden; transition: .25s ease; display: flex; flex-direction: column; }
.mode-card:nth-child(2) { background: linear-gradient(145deg, rgba(112,48,73,.86), rgba(58,30,63,.78)); }
.mode-card:nth-child(3) { background: linear-gradient(145deg, rgba(33,83,112,.88), rgba(20,46,82,.80)); }
.mode-card:hover { transform: translateY(-6px); filter: saturate(1.18) brightness(1.06); border-color: rgba(255,226,154,.72); }
.mode-card .number { font-family: var(--game-font); font-size: 15px; color: var(--gold); }
.mode-card h2 { font-family: var(--game-font); font-size: 29px; font-weight: 800; letter-spacing: -.04em; margin: 48px 0 8px; }
.mode-card p { color: var(--muted); line-height: 1.5; margin: 0; }
.mode-card .meta { position: static; display: block; margin-top: auto; padding-top: 16px; font-size: 12px; color: var(--gold-soft); font-weight: 700; }
.suit-watermark { position: absolute; right: 18px; top: -22px; font-size: 126px; opacity: .055; font-family: var(--game-font); }

.game-screen { min-height: 100vh; position: relative; z-index: 2; }
.game-wrap { padding: 28px clamp(10px, 3vw, 44px) 100px; overflow-x: auto; }
.game-title-row { width: min(1120px, 100%); margin: 0 auto 22px; display: flex; align-items: end; gap: 20px; }
.game-title-row h1 { font: 800 clamp(25px, 4vw, 40px)/1 var(--game-font); letter-spacing: -.045em; margin: 0; }
.game-title-row p { color: var(--muted); margin: 0 0 2px; }
.board { width: min(1120px, 100%); min-width: 600px; margin: auto; user-select: none; }
.upper-row { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 30px; min-height: var(--card-h); }
.pile-group { display: flex; gap: clamp(8px, 1.25vw, 16px); }
.pile { width: var(--card-w); height: var(--card-h); border-radius: calc(var(--card-w) * .10); position: relative; flex: 0 0 auto; }
.slot { border: 1.5px dashed rgba(246,240,228,.38); background: rgba(4,29,24,.30); box-shadow: inset 0 1px 6px rgba(0,0,0,.15); display: grid; place-items: center; color: rgba(246,240,228,.30); font: 600 calc(var(--card-w)*.40)/1 var(--game-font); }
.slot.empty-foundation { border: 2px solid #ffd86b; background: linear-gradient(145deg, #fffdf7, #ffe5a8); box-shadow: 0 3px 10px rgba(0,0,0,.26); }
.slot.empty-foundation > span:not(.slot-label) { color: #111820; opacity: 1; font-size: calc(var(--card-w)*.48); text-shadow: none; }
.slot.empty-foundation.red-suit > span:not(.slot-label) { color: #c21e3a; }
.slot-label { position: absolute; width: 100%; bottom: -20px; text-align: center; font-size: 9px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }

.card { width: var(--card-w); height: var(--card-h); position: absolute; inset: 0; border-radius: calc(var(--card-w) * .1); background: #faf7ef; color: #17211e; border: 1px solid rgba(17,36,30,.25); box-shadow: 0 5px 13px rgba(0,0,0,.26), inset 0 0 0 1px rgba(255,255,255,.8); cursor: pointer; transform: translateZ(0); transition: transform .14s, box-shadow .14s; overflow: hidden; }
.card[data-source] { cursor: grab; touch-action: none; }
.card[data-source]:active { cursor: grabbing; }
.card:hover { transform: translateY(-3px); box-shadow: 0 9px 18px rgba(0,0,0,.32); z-index: 99 !important; }
.card.red { color: var(--red); }
.card.back { background: #e8c670; border: 4px solid #f8eed4; }
.card.back::after { content: ""; position: absolute; inset: 3px; border-radius: 4px; border: 1px solid rgba(79,53,22,.4); background: repeating-linear-gradient(45deg, rgba(72,51,24,.22) 0 2px, transparent 2px 7px), repeating-linear-gradient(-45deg, rgba(72,51,24,.18) 0 2px, transparent 2px 7px); }
.card.back::before { content: "✦"; position: absolute; inset: 18%; z-index: 2; display: grid; place-items: center; color: #f8eed4; border: 1px solid rgba(248,238,212,.7); border-radius: 50%; font: calc(var(--card-w)*.30)/1 var(--game-font); text-shadow: 0 1px 2px rgba(79,53,22,.45); }
.card.selected { outline: 3px solid var(--gold); outline-offset: 2px; transform: translateY(-7px); z-index: 100 !important; }
.card.drag-source { opacity: .18; }
.drag-ghost { position: fixed; pointer-events: none; z-index: 1000; transform: rotate(-2deg) scale(1.045); transform-origin: 50% 18%; filter: drop-shadow(0 18px 18px rgba(0,0,0,.38)); }
.drag-ghost .card { position: absolute; left: 0; right: auto; bottom: auto; cursor: grabbing; box-shadow: 0 8px 17px rgba(0,0,0,.28), inset 0 0 0 1px rgba(255,255,255,.8); }
.drag-ghost.drag-dropping,.drag-ghost.drag-returning { transition: left .16s cubic-bezier(.2,.8,.2,1), top .16s cubic-bezier(.2,.8,.2,1), transform .16s ease; transform: rotate(0) scale(1); }
.drop-active { outline: 3px solid var(--gold); outline-offset: 4px; box-shadow: 0 0 0 7px rgba(227,182,91,.18), inset 0 1px 6px rgba(0,0,0,.15); transform: translateY(-3px); }
body.is-dragging { cursor: grabbing; user-select: none; }
.corner { position: absolute; top: 6px; left: 7px; font: 700 clamp(12px, calc(var(--card-w)*.21), 19px)/.9 var(--game-font); text-align: center; }
.corner span { display: block; font-family: var(--game-font); font-size: 1.05em; margin-top: 4px; }
.corner.bottom { inset: auto 7px 6px auto; transform: rotate(180deg); }
.center-suit { position: absolute; inset: 0; display: grid; place-items: center; font: calc(var(--card-w)*.52)/1 var(--game-font); opacity: .9; }
.court-art { position: absolute; inset: 24% 24%; display: grid; place-items: center; border: max(1px, calc(var(--card-w)*.018)) solid currentColor; outline: max(1px, calc(var(--card-w)*.012)) solid currentColor; outline-offset: 3px; transform: rotate(45deg); opacity: .84; }
.court-art span { transform: rotate(-45deg); font: 700 calc(var(--card-w)*.26)/1 var(--game-font); }
.tableau { display: grid; grid-template-columns: repeat(7, 1fr); gap: clamp(8px, 1.4vw, 18px); }
.tableau.freecell { grid-template-columns: repeat(8, 1fr); }
.column { width: var(--card-w); min-height: calc(var(--card-h) + 220px); position: relative; }

.pyramid-board { position: relative; width: calc(var(--card-w) * 7.2); height: calc(var(--card-h) + var(--card-w) * 4.8); margin: 0 auto 28px; }
.pyramid-card { position: absolute; width: var(--card-w); height: var(--card-h); }
.pyramid-board .card.blocked { filter: brightness(.75); cursor: default; }
.pyramid-board .card.blocked:hover { transform: none; }

.message { position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%) translateY(20px); background: #f8f2e6; color: var(--ink); border-radius: 999px; padding: 11px 18px; font-weight: 700; box-shadow: 0 12px 30px rgba(0,0,0,.3); opacity: 0; pointer-events: none; transition: .25s; z-index: 300; white-space: nowrap; max-width: calc(100vw - 24px); overflow: hidden; text-overflow: ellipsis; }
.message.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.pause-overlay { position: fixed; inset: 72px 0 0; z-index: 350; display: grid; place-items: center; padding: 20px; background: rgba(4,24,19,.86); backdrop-filter: blur(7px); text-align: center; }
.pause-panel { min-width: min(360px,90vw); padding: 34px; border: 1px solid rgba(255,215,107,.55); border-radius: 24px; background: rgba(8,55,37,.96); box-shadow: 0 24px 70px rgba(0,0,0,.45); }
.pause-panel>span { display: block; color: var(--gold); font-size: 48px; }
.pause-panel h2 { margin: 10px 0 24px; font-size: 26px; }
.pause-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.pause-actions .primary-btn,.pause-actions .ghost-btn { min-width: 142px; }
.move-feedback { position:fixed; left:50%; top:38%; transform:translate(-50%,-50%) scale(.68); z-index:320; pointer-events:none; opacity:0; font-size:clamp(42px,8vw,92px); font-weight:900; letter-spacing:.08em; text-shadow:0 5px 18px rgba(0,0,0,.38); transition:opacity .15s ease,transform .22s cubic-bezier(.2,.8,.2,1.25); }
.move-feedback.show { opacity:1; transform:translate(-50%,-50%) scale(1); }
.move-feedback.good { color:#fff4c7; }
.move-feedback.great { color:#ffd45f; }
.move-feedback.wrong { color:#ff7b86; }
.modal-backdrop { position: fixed; inset: 0; background: rgba(5,20,17,.78); backdrop-filter: blur(7px); display: grid; place-items: center; z-index: 400; padding: 20px; }
.modal { width: min(460px, 100%); background: var(--cream); color: var(--ink); border-radius: 26px; padding: 34px; text-align: center; box-shadow: 0 30px 80px rgba(0,0,0,.45); }
.modal .trophy { font-size: 52px; }
.modal h2 { font: 700 35px/1.1 var(--game-font); margin: 12px 0; }
.modal p { color: #52605b; line-height: 1.55; }
.modal-actions { display: flex; justify-content: center; gap: 10px; margin-top: 24px; }
.deadlock-actions { flex-wrap: wrap; }
.deadlock-actions button:disabled { opacity: .4; cursor: default; }
.modal .ghost-btn { color: var(--ink); border-color: rgba(16,37,31,.15); background: rgba(16,37,31,.06); }
.rules-list { text-align: left; margin: 20px 0; padding-left: 22px; color: #52605b; line-height: 1.6; }
.music-on { color: #2b261a; background: var(--gold); border-color: var(--gold); box-shadow: 0 0 0 4px rgba(227,182,91,.14); }
.landscape-note { display: none; }
.app-shell[data-reduce-motion="true"] *, .app-shell[data-reduce-motion="true"] *::before, .app-shell[data-reduce-motion="true"] *::after { transition: none !important; animation: none !important; }

.home-footer { margin-top: 44px; padding: 24px 0 0; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 10px 24px; align-items: center; }
.home-footer button { padding: 0; border: 0; background: transparent; color: var(--muted); cursor: pointer; font: 600 13px/1.5 var(--game-font); }
.home-footer button:hover { color: var(--gold-soft); }
.home-footer .copyright { margin-left: auto; color: rgba(246,240,228,.45); font-size: 12px; }

.support-shell { cursor: pointer; }
.support-page { width: min(820px, 100%); margin: auto; padding: clamp(38px, 7vw, 76px) 22px 80px; position: relative; z-index: 2; }
.support-card { position: relative; background: rgba(248,244,235,.96); color: var(--ink); border-radius: 26px; padding: clamp(25px, 5vw, 52px); box-shadow: 0 24px 70px rgba(0,0,0,.28); cursor: default; }
.support-close { position: absolute; top: 18px; right: 18px; width: 42px; height: 42px; display: grid; place-items: center; border: 0; border-radius: 50%; background: rgba(16,37,31,.08); color: var(--ink); font: 400 32px/1 var(--game-font); cursor: pointer; transition: background .18s ease, transform .18s ease; }
.support-close:hover { background: rgba(16,37,31,.15); transform: scale(1.05); }
.support-close:focus-visible { outline: 3px solid #d5a846; outline-offset: 3px; }
.support-kicker { color: #7b6539; text-transform: uppercase; letter-spacing: .16em; font-size: 11px; font-weight: 800; }
.support-card h1 { margin: 9px 0 13px; font: 800 clamp(32px, 6vw, 54px)/1 var(--game-font); letter-spacing: -.055em; }
.support-card h2 { margin: 32px 0 8px; font-size: 20px; letter-spacing: -.025em; }
.support-card p, .support-card li { color: #4c5d56; line-height: 1.68; }
.support-card a { color: #176a57; }
.support-card .updated { margin-bottom: 30px; color: #7c8a84; font-size: 13px; }
.settings-list { display: grid; gap: 12px; margin-top: 28px; }
.setting-row { display: flex; align-items: center; gap: 18px; padding: 17px 18px; background: #ece9df; border-radius: 15px; }
.setting-copy { flex: 1; }
.setting-copy strong { display: block; }
.setting-copy small { color: #68766f; }
.toggle { width: 52px; height: 30px; border: 0; border-radius: 999px; background: #a9b1ad; padding: 3px; cursor: pointer; transition: .2s; }
.toggle::after { content: ""; display: block; width: 24px; height: 24px; border-radius: 50%; background: white; box-shadow: 0 2px 6px rgba(0,0,0,.22); transition: .2s; }
.toggle.on { background: #287b66; }
.toggle.on::after { transform: translateX(22px); }
.theme-options { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.theme-choice { border: 2px solid transparent; border-radius: 12px; padding: 10px 14px; background: #dde5df; color: var(--ink); font-weight: 700; cursor: pointer; }
.theme-choice.active { border-color: #287b66; background: #cde3d9; }
.danger-btn { margin-top: 28px; border: 1px solid #caa; color: #963e45; background: #fff4f2; border-radius: 12px; padding: 11px 15px; font-weight: 700; cursor: pointer; }
.support-copyright { margin: 28px 0 0; padding-top: 20px; border-top: 1px solid #d8d8cf; color: #7c8a84 !important; font-size: 12px; text-align: center; }

@media (max-width: 760px) {
  :root { --card-w: clamp(39px, 11.5vw, 68px); }
  .topbar { height: 62px; padding: 0 8px; gap: 5px; }
  .topbar .brand { font-size: 17px; }
  .game-screen .topbar .brand { display: none; }
  .game-screen .icon-btn { width: 34px; height: 34px; }
  .game-screen .hint-btn { min-width: 45px; height: 34px; padding: 0 8px; font-size: 10px; }
  .game-screen .pause-btn { width: 36px; height: 36px; padding: 0; justify-content: center; }
  .game-screen .pause-btn span { display: none; }
  .stat { min-width: 43px; }
  .stat-label { font-size: 8px; }
  .mode-grid { grid-template-columns: 1fr; margin-top: 36px; }
  .mode-card { min-height: 210px; }
  .mode-card h2 { margin-top: 30px; }
  .home { padding-top: 44px; }
  .game-wrap { padding-top: 20px; }
  .game-title-row p { display: none; }
  .board { min-width: 310px; }
  .tableau { gap: 6px; }
  .upper-row { margin-bottom: 24px; }
  .column { min-height: calc(var(--card-h) + 180px); }
  .landscape-note { display: block; margin: 14px auto 0; text-align: center; font-size: 11px; color: var(--muted); }
  .pause-overlay { inset: 62px 0 0; }
  .home-footer .copyright { width: 100%; margin: 8px 0 0; }
}

@media (orientation: landscape) and (max-height: 600px) {
  :root { --card-w: clamp(48px, 9vw, 74px); }
  .game-screen .topbar { height: 48px; }
  .game-screen .game-wrap { padding-top: 10px; padding-bottom: 28px; }
  .game-screen .game-title-row { display: none; }
  .game-screen .upper-row { margin-bottom: 16px; }
  .game-screen .column { min-height: calc(var(--card-h) + 120px); }
  .game-screen .tableau { gap: clamp(6px, 1.1vw, 12px); }
  .game-screen .landscape-note { display: none; }
  .pyramid-board { height: calc(var(--card-h) + var(--card-w) * 4.1); }
}

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