:root{--bg-top: #ffffff;--bg-bottom: #ffffff;--surface: rgba(250, 251, 251, .96);--help-bg: #fafbfb;--surface-border: rgba(75, 83, 88, .18);--popover-shadow: rgba(45, 52, 56, .16);--field-bg: rgba(255, 255, 255, .75);--ink: #3f4142;--cell-ink: #101820;--ink-muted: #697074;--ink-faint: rgba(105, 112, 116, .5);--accent: #c1703f;--accent-strong: #9c5527;--accent-soft: rgba(193, 112, 63, .14);--accent-soft-strong: rgba(193, 112, 63, .24);--accent-contrast: #fff8f2;--board-bg: rgba(205, 210, 214, .4);--cell-bg-from: #dcecf5;--cell-bg-via: #c5ddec;--cell-bg-to: #b4d1e2;--cell-selected-from: #f6c5c1;--cell-selected-to: #e7a6a4;--cell-ring: rgba(105, 139, 158, .35);font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.5;font-weight:400;color:var(--ink);background:var(--bg-bottom);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%;min-height:100vh}body{min-height:100vh;display:flex;justify-content:center;align-items:center;background:linear-gradient(180deg,var(--bg-top) 0%,var(--bg-bottom) 100%)}button{font:inherit}.app-shell{width:min(100vw,520px);padding:16px 18px 24px}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:2px;padding:4px 0}.brand{font-size:clamp(1.8rem,5vw,2.6rem);font-weight:800;letter-spacing:-.06em;color:var(--ink)}.brand-group{display:flex;flex-direction:column;align-items:flex-start}.puzzle-number{display:flex;align-items:center;gap:8px;margin-top:-2px;color:var(--ink-muted);font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.mode-badge{padding:3px 7px;border:1px solid currentColor;border-radius:999px;font-size:.62rem;font-weight:800;letter-spacing:.1em;line-height:1}.mode-easy{background:#dff3ef;color:#195951}.mode-hard{background:#fff0d8;color:#875218}.archive-badge{background:#e9e4f7;color:#574b86}body.dark-mode .mode-easy{background:#123c42;color:#d4fff8}body.dark-mode .mode-hard{background:#4a321b;color:#ffd99b}body.dark-mode .archive-badge{background:#302c4b;color:#d8d0ff}.topbar-actions{display:flex;gap:10px}.settings-popover{position:absolute;top:62px;right:max(18px,calc((100vw - 520px)/2 + 18px));z-index:3;width:min(280px,calc(100vw - 36px));padding:12px 14px;border:1px solid var(--surface-border);border-radius:12px;background:var(--surface);box-shadow:0 12px 28px var(--popover-shadow)}.archive-popover{position:absolute;top:62px;right:max(18px,calc((100vw - 520px)/2 + 18px));z-index:3;width:min(280px,calc(100vw - 36px));padding:14px;border:1px solid var(--surface-border);border-top:3px solid #574b86;border-radius:12px;background:var(--surface);box-shadow:0 12px 28px var(--popover-shadow)}.archive-popover h2{margin:0 0 12px;color:var(--ink);font-size:1rem}.archive-controls{margin-top:12px;padding-top:12px;border-top:1px solid var(--surface-border)}.help-popover{position:absolute;top:62px;right:max(18px,calc((100vw - 520px)/2 + 18px));z-index:3;width:min(400px,calc(100vw - 36px));padding:16px 18px 18px;border:1px solid var(--surface-border);border-top:3px solid var(--accent);border-radius:12px;background:var(--help-bg);box-shadow:0 14px 30px var(--popover-shadow);color:var(--ink)}.help-popover h2{margin:0 0 10px;font-size:1.2rem;letter-spacing:.02em}.help-video{display:block;width:80%;height:auto;object-fit:contain;border-radius:8px;margin:auto auto 10px;background:#000;object-fit:cover}.help-text p{margin:8px 0 0;font-size:1.1rem;line-height:1.55}.help-text p:first-child{margin-top:0}.help-pagination{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:14px}.help-page-indicator{color:var(--ink-muted);font-size:.88rem;font-weight:700}.help-nav-button{border:1px solid var(--accent);border-radius:8px;padding:6px 14px;background:transparent;color:var(--accent-strong);font-weight:800}.help-nav-button:disabled{opacity:.4;cursor:not-allowed}.feedback-popover{position:absolute;top:62px;right:max(18px,calc((100vw - 520px)/2 + 18px));z-index:3;width:min(340px,calc(100vw - 36px));padding:14px 16px;border:1px solid var(--surface-border);border-radius:12px;background:var(--surface);box-shadow:0 12px 28px var(--popover-shadow);color:var(--ink)}.feedback-popover h2{margin:0 0 6px;font-size:1rem}.feedback-popover p{margin:0 0 12px;font-size:.82rem;line-height:1.4}.feedback-popover form,.feedback-popover label{display:flex;flex-direction:column;gap:5px}.feedback-popover form{gap:10px}.feedback-popover label{font-size:.8rem;font-weight:700}.feedback-popover textarea,.feedback-popover input{width:100%;border:1px solid var(--surface-border);border-radius:8px;padding:8px;background:var(--field-bg);color:var(--ink);font:inherit;font-size:.85rem}.feedback-popover textarea{resize:vertical}.feedback-submit{align-self:flex-end;border:0;border-radius:8px;padding:8px 16px;background:var(--accent);color:var(--accent-contrast);font-weight:800}.feedback-submit:disabled{cursor:wait;opacity:.6}.feedback-status{margin:0;color:var(--ink-muted);font-size:.78rem;line-height:1.35}.settings-toggle{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--ink);font-size:.9rem;font-weight:700}.settings-toggle+.settings-toggle{margin-top:10px}.settings-description{margin:6px 0 0;color:var(--ink-muted);font-size:.74rem;line-height:1.35}.settings-toggle input{width:18px;height:18px;accent-color:var(--accent)}.settings-mode{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--ink);font-size:.9rem;font-weight:700}.settings-mode+.settings-mode{margin-top:10px}.settings-mode select{min-width:100px;padding:5px 8px;border:1px solid var(--surface-border);border-radius:7px;background:var(--field-bg);color:var(--ink);font:inherit}.settings-error{margin:8px 0 0;color:#a54535;font-size:.76rem;font-weight:700;line-height:1.35}body.dark-mode .settings-error{color:#ffad98}.settings-action{width:100%;margin-top:12px;border:1px solid var(--surface-border);border-radius:8px;padding:6px 9px;background:var(--accent-soft);color:var(--accent-strong);font-size:.84rem;font-weight:800;text-align:center}.settings-action:hover,.settings-action:focus-visible{outline:none;background:var(--accent-soft-strong)}.archive-input-form{display:grid;gap:5px;margin-top:10px;color:var(--ink);font-size:.78rem;font-weight:700}.archive-input-form div{display:flex;gap:6px}.archive-input-form input{min-width:0;width:100%;padding:5px 8px;border:1px solid var(--surface-border);border-radius:7px;background:var(--field-bg);color:var(--ink);font:inherit}.archive-input-form button{border:1px solid var(--accent);border-radius:7px;padding:5px 9px;background:var(--accent-soft);color:var(--accent-strong);font-size:.78rem;font-weight:800}.icon-button{width:36px;height:36px;border:none;border-radius:10px;background:var(--accent-soft);color:var(--ink);font-size:1.2rem;font-weight:700}.game-area{display:flex;flex-direction:column;align-items:center;gap:14px}.score-pill{padding:6px 10px;border-radius:999px;background:var(--accent-soft);color:var(--ink);font-weight:700}.theme-hint{position:relative;width:min(94vw,480px);height:2.4rem;line-height:1.2rem;overflow:visible;white-space:nowrap;color:var(--accent-strong);font-size:.86rem;font-weight:800;letter-spacing:.12em;text-align:center;text-transform:uppercase}.theme-name,.selected-word-preview{display:block}.selected-word-preview{min-height:1.2rem;margin-top:.35rem;font-size:1.15rem;letter-spacing:.16em}.grid-board{width:100%;aspect-ratio:1;display:grid;grid-template-columns:repeat(var(--grid-size, 5),minmax(0,1fr));grid-template-rows:repeat(var(--grid-size, 5),minmax(0,1fr));gap:5px;padding:10px;border-radius:22px;background:transparent;touch-action:none;-webkit-user-select:none;user-select:none}.board-layout{display:flex;flex-direction:column;gap:16px;width:100%;max-width:520px}.board-layout .grid-board{width:100%}.grid-column{width:100%;min-width:0}.found-words{width:100%;min-width:0;padding-top:4px;text-align:center}.found-words h2{margin:0 0 10px;color:var(--ink-muted);font-size:.72rem;letter-spacing:.1em;text-align:center;text-transform:uppercase}.found-words ol{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin:0;padding:0;list-style:none}.found-words li{min-width:0;overflow:hidden;white-space:nowrap;padding:6px 10px;border-radius:8px;background:var(--accent-soft);color:var(--ink-faint);font-size:.9rem;font-weight:800;letter-spacing:.1em}.found-words li.unfound{font-size:1rem;letter-spacing:.14em}.found-words li.found{background:var(--accent-soft-strong);color:var(--ink)}.found-words li.known{background:transparent;border:1.5px dashed var(--accent);color:var(--ink-muted);padding:4.5px 10px}.next-puzzle-message{display:flex;align-items:center;justify-content:center;gap:8px;margin:18px auto 0;padding:9px 14px;border:1px solid #2e8179;border-radius:8px;background:#dff3ef;box-shadow:0 2px 8px #1a69601f;color:#195951;font-size:.8rem;font-weight:800;letter-spacing:.08em;text-align:center;text-transform:uppercase}body.dark-mode .next-puzzle-message{border-color:#57c5b9;background:#123c42;box-shadow:0 2px 10px #00000038;color:#d4fff8}body.dark-mode .found-words li.known{border-color:var(--accent-strong);color:var(--ink-muted)}.letter-cell{position:relative;overflow:hidden;min-width:0;min-height:0;border:none;border-radius:0;background:var(--cell-bg-via);color:var(--cell-ink);font-size:clamp(1.6rem,5vw,2.1rem);font-weight:800;text-transform:uppercase;cursor:pointer;text-shadow:0 1px 0 rgba(255,255,255,.72),0 2px 5px rgba(31,51,45,.2);transition:transform .1s ease;box-shadow:0 0 0 1px var(--cell-ring)}.letter-cell:before{content:none}.letter-cell:after{content:none}.letter-cell:active,.letter-cell:focus-visible{outline:none;transform:scale(.98)}.letter-cell.selected{background:var(--cell-selected-to);color:#fff7ef;text-shadow:0 1px 0 rgba(255,255,255,.42),0 2px 5px rgba(29,61,36,.4);box-shadow:0 0 0 1px var(--cell-ring)}.letter-cell.empty{background:transparent;box-shadow:none;cursor:default;text-shadow:none}.letter-cell.empty:before,.letter-cell.empty:after{content:none}.grid-board.result-gold .letter-cell{background:#e7b83f;color:#5b3908;text-shadow:none;box-shadow:none}.grid-board.result-silver .letter-cell{background:#cdd4d7;color:#344047;text-shadow:none;box-shadow:none}.grid-board.result-bronze .letter-cell{background:#b87333;color:#4d2812;text-shadow:none;box-shadow:none}.grid-board.result-gray .letter-cell{background:#9ba09d;color:#303836;text-shadow:none;box-shadow:none}.grid-board.result-gold,.grid-board.result-silver,.grid-board.result-bronze,.grid-board.result-gray{display:flex;align-items:center;justify-content:center;background:transparent;border:2px solid rgba(91,104,94,.38);box-shadow:none}.grid-board.result-gold{border-color:#bf8b1fb8}.grid-board.result-silver{border-color:#707d84b8}.grid-board.result-bronze{border-color:#915123b8}.grid-board.result-gray{border-color:#525b569e}.game-result-icon{display:block;margin:-.3rem auto 0;text-align:center;font-size:clamp(7.5rem,30vw,13rem);line-height:1;filter:drop-shadow(0 10px 12px rgba(38,48,41,.2))}.game-result-content{display:grid;grid-template-rows:auto auto auto auto auto;align-content:center;justify-items:center;gap:.2rem 0;width:100%;height:100%;padding:.75rem .75rem .85rem;box-sizing:border-box}.game-result-icon+.game-result-undo{margin-top:.5rem}.game-result-label{width:100%;min-height:1.8rem;color:var(--ink);font-size:clamp(2.2rem,10vw,3.4rem);font-weight:800;letter-spacing:.08em;text-align:center}.game-result-undo{width:100%;min-height:1.4rem;color:var(--ink-muted);font-size:clamp(1rem,4vw,1.35rem);font-weight:700;letter-spacing:.06em;text-align:center}.share-button{margin-top:.8rem;border:1px solid var(--accent);border-radius:10px;padding:8px 16px;background:var(--surface);color:var(--accent-strong);font-weight:800;white-space:nowrap;align-self:end}.share-button:hover,.share-button:focus-visible{outline:none;background:var(--accent-soft)}.share-status{color:var(--ink-muted);font-size:.75rem;font-weight:700;white-space:nowrap;text-align:center}.letter-cell.falling{animation:letter-fall .7s cubic-bezier(.55,0,.85,.35) both;transition:none;will-change:transform}@keyframes letter-fall{0%{transform:translateY(calc(var(--fall-rows) * -100%))}to{transform:translateY(0) scale(1)}}@media (prefers-reduced-motion: reduce){.letter-cell.falling{animation:none}}.undo-row{display:flex;align-items:center;gap:14px;justify-content:center;margin-top:6px}.undo-button{min-width:108px;height:52px;border:none;border-radius:14px;background:var(--accent-soft);color:var(--ink);font-size:1.8rem;font-weight:700}.undo-button span+span{margin-left:8px;font-size:1rem;vertical-align:.12em}.undo-button.active{background:var(--accent-soft-strong)}.undo-count,.undo-summary{color:var(--ink-muted);font-size:.9rem;font-weight:700}.undo-button:disabled{opacity:.45;cursor:not-allowed}.reset-button{border:none;border-radius:10px;padding:10px 14px;background:var(--accent-soft);color:var(--ink);font-weight:700}body.dark-mode{--bg-top: #0d1a2e;--bg-bottom: #060d1a;--surface: rgba(20, 32, 50, .97);--help-bg: #142032;--surface-border: rgba(120, 160, 200, .22);--popover-shadow: rgba(0, 0, 0, .4);--field-bg: rgba(8, 14, 24, .55);--ink: #f0ead9;--cell-ink: var(--ink);--ink-muted: #b9ad95;--ink-faint: rgba(201, 189, 163, .45);--accent: #e0925a;--accent-strong: #f0ac78;--accent-soft: rgba(224, 146, 90, .18);--accent-soft-strong: rgba(224, 146, 90, .26);--accent-contrast: #1a1006;--board-bg: rgba(90, 130, 175, .16);--cell-bg-from: rgba(60, 95, 135, .65);--cell-bg-via: rgba(35, 60, 95, .75);--cell-bg-to: rgba(35, 58, 88, .92);--cell-selected-from: #f0ac78;--cell-selected-to: #a85f2e;--cell-ring: rgba(150, 190, 230, .4);color:var(--ink)}@media (max-width: 420px){body{align-items:flex-start}.app-shell{width:min(100vw,420px);padding:8px 12px 16px}.topbar{margin-bottom:4px}.game-area{gap:8px}.board-layout .grid-board{gap:4px;padding:8px}.found-words{padding-top:0}.board-layout .grid-board.result-gold,.board-layout .grid-board.result-silver,.board-layout .grid-board.result-bronze,.board-layout .grid-board.result-gray{width:min(68vw,280px);margin:0 auto}.game-result-icon{font-size:clamp(4.5rem,20vw,6.5rem)}.game-result-label{top:.35rem}.undo-row{width:100%}.theme-hint{width:min(88vw,360px)}.found-words h2{margin-bottom:6px}}