:root{--primary: #182442;--primary-container: #2e3a59;--on-primary: #ffffff;--on-primary-container: #98a4c9;--secondary: #0060ac;--secondary-fixed: #d4e3ff;--secondary-fixed-dim: #a4c9ff;--error: #ba1a1a;--error-container: #ffdad6;--surface: #f9f9fb;--surface-container-lowest: #ffffff;--surface-container-low: #f3f3f5;--surface-container: #eeeef0;--surface-container-high: #e8e8ea;--surface-container-highest: #e2e2e4;--on-surface: #1a1c1d;--on-surface-variant: #45464e;--outline: #75777e;--outline-variant: #c6c6ce;--tertiary-fixed: #b1f0ce;--board-bg: rgba(24, 36, 66, .9);--board-gap: 2px;--box-gap: rgba(140, 143, 158, .4);--cell-related-bg: #d5d6da;--completed-bg: #002114;--completed-color: #b1f0ce}.material-symbols-outlined{font-variation-settings:"FILL" 0,"wght" 400,"GRAD" 0,"opsz" 24;font-size:1.5rem;line-height:1;-webkit-user-select:none;user-select:none}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,Segoe UI,sans-serif;background:var(--surface);color:var(--on-surface);min-width:320px;line-height:1.5}h1,h2,h3{font-family:Manrope,sans-serif}button,input{font:inherit;cursor:pointer;border:0;background:none}.app-header{position:fixed;top:0;left:0;right:0;z-index:50;background:var(--surface);padding:16px 24px}.app-header-inner{display:flex;justify-content:space-between;align-items:center;max-width:1280px;margin:0 auto}.app-title{font-family:Manrope,sans-serif;font-size:1.25rem;font-weight:700;letter-spacing:-.02em;color:var(--primary)}.header-settings-btn{color:var(--on-surface-variant);display:flex;align-items:center;transition:opacity .15s;padding:4px}.header-settings-btn:hover{opacity:.7}.bottom-nav{position:fixed;bottom:0;left:0;right:0;z-index:50;display:flex;justify-content:space-around;align-items:center;padding:12px 16px 20px;background:var(--surface-container-low);box-shadow:0 -4px 24px #1a1c1d0a;border-radius:16px 16px 0 0}.nav-item{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:6px 20px;border-radius:12px;font-size:.6875rem;font-weight:500;color:var(--on-surface-variant);text-decoration:none;transition:all .2s;gap:2px;background:none;border:0;cursor:pointer}.nav-item.active{background:var(--secondary-fixed);color:var(--primary)}.nav-item .material-symbols-outlined{font-size:1.5rem}.home-shell{max-width:1280px;margin:0 auto;padding:88px 24px 100px}.home-grid{display:grid;grid-template-columns:1fr;gap:32px;margin-top:32px}@media(min-width:1024px){.home-grid{grid-template-columns:7fr 5fr}}.section-label{font-size:.75rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--on-surface-variant);margin-bottom:8px}.section-heading{font-family:Manrope,sans-serif;font-size:1.25rem;font-weight:700;letter-spacing:-.02em;color:var(--primary);margin-bottom:24px}.resume-card{position:relative;overflow:hidden;background:var(--surface-container-low);border-radius:12px;padding:32px;display:flex;flex-direction:column;gap:24px;margin-bottom:32px}@media(min-width:640px){.resume-card{flex-direction:row;align-items:center;justify-content:space-between}}.resume-card-bg{position:absolute;top:-64px;right:-64px;width:256px;height:256px;background:#d4e3ff33;filter:blur(80px);border-radius:50%;pointer-events:none}.resume-title{font-family:Manrope,sans-serif;font-size:1.875rem;font-weight:800;letter-spacing:-.02em;color:var(--primary);margin-bottom:8px}.resume-subtitle{font-size:.875rem;color:var(--on-surface-variant)}.btn-primary{background:var(--primary);color:var(--on-primary);padding:16px 32px;border-radius:12px;font-weight:600;font-size:1rem;display:inline-flex;align-items:center;gap:8px;transition:opacity .12s,transform .12s;white-space:nowrap;border:0;cursor:pointer}.btn-primary:hover{opacity:.9}.btn-primary:active{transform:scale(.96)}.btn-primary:disabled{opacity:.4;cursor:not-allowed}.btn-ghost{background:var(--surface-container-low);color:var(--primary);padding:4px 12px;border-radius:9999px;font-size:.75rem;font-weight:600;transition:opacity .12s,transform .12s;border:0;cursor:pointer}.btn-ghost:hover{opacity:.8}.btn-ghost:active{transform:scale(.96)}.btn-pill{background:var(--secondary-fixed);color:var(--primary);padding:10px 24px;border-radius:9999px;font-weight:700;font-size:.875rem;transition:background .15s;display:inline-block;border:0;cursor:pointer}.btn-pill:hover{background:#fff}.difficulty-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}@media(min-width:480px){.difficulty-grid{grid-template-columns:repeat(4,1fr)}}.difficulty-card{background:var(--surface-container-lowest);border-radius:12px;padding:24px 16px;display:flex;flex-direction:column;align-items:center;gap:12px;transition:all .15s;border:0;cursor:pointer}.difficulty-card:hover{background:var(--surface-container)}.difficulty-card:active{transform:scale(.96)}.difficulty-card:disabled{opacity:.5;cursor:not-allowed}.difficulty-card.active{background:var(--primary-container)}.difficulty-card .material-symbols-outlined{color:var(--secondary)}.difficulty-card.active .material-symbols-outlined{color:var(--secondary-fixed)}.difficulty-label{font-weight:600;color:var(--primary);font-size:.9375rem}.difficulty-card.active .difficulty-label{color:#fff}.stats-card{background:var(--surface-container-low);border-radius:12px;padding:32px;margin-bottom:32px}.stats-card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:32px}.stats-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px 16px}.stat-value{font-family:Manrope,sans-serif;font-size:1.875rem;font-weight:800;letter-spacing:-.02em;color:var(--primary)}.stat-label{font-size:.6875rem;font-weight:500;text-transform:uppercase;letter-spacing:.1em;color:var(--on-surface-variant);margin-top:4px}.stats-footer{margin-top:32px;padding-top:32px;border-top:1px solid rgba(198,198,206,.2)}.link-btn{display:flex;align-items:center;justify-content:space-between;width:100%;color:var(--secondary);font-weight:600;transition:opacity .15s;border:0;background:none;cursor:pointer}.link-btn:hover{opacity:.8}.daily-card{position:relative;overflow:hidden;background:var(--primary);color:var(--on-primary);border-radius:12px;padding:32px}.daily-card-grid-bg{position:absolute;inset:0;opacity:.1;display:grid;grid-template-columns:repeat(6,48px);gap:8px;transform:rotate(12deg) translate(48px,-48px);pointer-events:none}.daily-card-grid-cell{width:48px;height:48px;border:1px solid rgba(255,255,255,.4);border-radius:2px}.daily-card-content{position:relative;z-index:1}.daily-badge{display:flex;align-items:center;gap:8px;margin-bottom:16px}.daily-badge .material-symbols-outlined{color:var(--tertiary-fixed);font-size:1.25rem}.daily-badge-text{font-size:.6875rem;font-weight:700;text-transform:uppercase;letter-spacing:.2em;color:var(--secondary-fixed)}.daily-title{font-family:Manrope,sans-serif;font-size:1.5rem;font-weight:700;margin-bottom:8px}.daily-desc{font-size:.875rem;color:var(--on-primary-container);margin-bottom:24px}.game-shell{max-width:480px;margin:0 auto;padding:80px 16px 100px;display:flex;flex-direction:column;align-items:center}.game-info-bar{width:100%;display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:24px}.game-mode-label{font-size:.75rem;font-weight:500;text-transform:uppercase;letter-spacing:.12em;color:var(--on-surface-variant);margin-bottom:4px}.game-mode-title{font-family:Manrope,sans-serif;font-size:1.25rem;font-weight:800;letter-spacing:-.02em;color:var(--primary)}.game-stats-col{display:flex;flex-direction:column;align-items:flex-end;gap:8px}.game-stats-row{display:flex;gap:16px}.game-stat{text-align:center}.game-stat-label{display:block;font-size:.625rem;text-transform:uppercase;letter-spacing:.08em;color:var(--on-surface-variant)}.game-stat-value{font-family:Manrope,sans-serif;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums}.game-actions-row{display:flex;gap:8px}.board-wrapper{width:100%;aspect-ratio:1;background:var(--surface-container-lowest);padding:4px;border-radius:8px;box-shadow:0 2px 16px #1a1c1d0f;margin-bottom:20px;position:relative}.board{display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);gap:var(--board-gap);background:var(--board-bg);border-radius:4px;overflow:hidden;height:100%}.box-group{display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);gap:1px;background:var(--box-gap)}.cell{display:flex;align-items:center;justify-content:center;background:var(--surface-container-lowest);color:var(--primary);font-family:Inter,sans-serif;font-size:clamp(1rem,3.5vw,1.25rem);font-weight:600;position:relative;transition:background-color 80ms;border:0;cursor:pointer}.cell.given{color:var(--primary);font-weight:600}.cell.user-entry{color:var(--secondary);font-weight:500}.cell.related,.cell.given.related{background:var(--cell-related-bg)}.cell.matching{background:var(--secondary-fixed-dim)}.cell.selected{background:var(--secondary-fixed)!important}.cell.conflict{background:var(--error-container)!important;color:var(--error)!important}.cell.mistake{color:var(--error)!important}.notes-grid{width:100%;height:100%;display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);padding:2px}.notes-grid small{display:flex;align-items:center;justify-content:center;font-size:clamp(.45rem,1.2vw,.6rem);color:var(--on-surface-variant);font-family:Inter,sans-serif;font-weight:500}.pause-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#1a1c1d99;color:#fff;font-family:Manrope,sans-serif;font-size:1.5rem;font-weight:700;border-radius:4px;letter-spacing:.1em;text-transform:uppercase;z-index:2}.toolbar{width:100%;display:flex;gap:8px;margin-bottom:20px}.tool-btn{flex:1;background:var(--surface-container-low);border-radius:12px;padding:12px 8px;display:flex;flex-direction:column;align-items:center;gap:4px;transition:all .15s;color:var(--primary);border:0;cursor:pointer}.tool-btn:hover{background:var(--surface-container-high)}.tool-btn:active{transform:scale(.96)}.tool-btn:disabled{opacity:.35;cursor:not-allowed;transform:none}.tool-btn.notes-on{background:var(--primary);color:var(--on-primary)}.tool-btn .material-symbols-outlined{font-size:1.25rem}.tool-btn-label{font-size:.625rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:inherit}.num-pad{width:100%;display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.num-key{aspect-ratio:1;background:var(--primary);color:var(--on-primary);border-radius:12px;font-family:Manrope,sans-serif;font-size:clamp(1.25rem,4vw,1.5rem);font-weight:700;display:flex;align-items:center;justify-content:center;transition:opacity .12s,transform .12s;border:0;cursor:pointer}.num-key:hover{opacity:.9}.num-key:active{transform:scale(.92)}.num-key.hint-key{background:var(--surface-container-high);color:var(--primary)}.num-key.num-key-done{background:var(--surface-container-high);color:var(--on-surface-variant);opacity:.45;cursor:not-allowed}.num-key.hint-key .material-symbols-outlined{font-size:1.25rem}.game-over-banner{width:100%;background:var(--error-container);color:var(--error);border-radius:12px;padding:20px 24px;text-align:center;margin-bottom:20px;font-family:Manrope,sans-serif;font-weight:700;font-size:1.125rem;display:flex;flex-direction:column;align-items:center}.completed-banner{width:100%;background:var(--completed-color);color:var(--completed-bg);border-radius:12px;padding:20px 24px;text-align:center;margin-bottom:20px;font-family:Manrope,sans-serif;font-weight:700;font-size:1.125rem}.tournament-card{background:var(--primary-container);border-radius:16px;padding:20px;margin-top:16px;color:var(--on-primary)}.tournament-card--empty{background:var(--surface-container-high);color:var(--on-surface-variant)}.tournament-badge{display:flex;align-items:center;gap:6px;font-family:Manrope,sans-serif;font-weight:700;font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--on-primary-container);margin-bottom:10px}.tournament-status-badge{padding:2px 8px;border-radius:99px;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em}.tournament-status-badge--active{background:var(--completed-color);color:var(--completed-bg)}.tournament-status-badge--upcoming{background:var(--secondary-fixed);color:var(--primary)}.tournament-status-badge--ended{background:var(--outline-variant);color:var(--on-surface-variant)}.tournament-title{font-family:Manrope,sans-serif;font-size:1.1rem;font-weight:800;color:var(--on-primary);margin-bottom:8px}.tournament-countdown-row{display:flex;align-items:center;gap:6px;font-size:.85rem;color:var(--on-primary-container);margin-bottom:14px}.tournament-clock-icon{font-size:1rem}.tournament-countdown{font-variant-numeric:tabular-nums}.tournament-card-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.tournament-empty-text{font-size:.9rem;color:var(--on-surface-variant);margin-top:4px}.leaderboard-table{width:100%;border-radius:12px;overflow:hidden;border:1px solid var(--outline-variant)}.leaderboard-header{display:grid;grid-template-columns:40px 1fr 70px 60px 60px;gap:8px;padding:10px 16px;background:var(--surface-container-high);font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--on-surface-variant)}.leaderboard-row{display:grid;grid-template-columns:40px 1fr 70px 60px 60px;gap:8px;padding:12px 16px;align-items:center;border-top:1px solid var(--outline-variant);font-size:.9rem;transition:background .15s}.leaderboard-row:hover{background:var(--surface-container-low)}.leaderboard-rank{font-family:Manrope,sans-serif;font-weight:800;font-size:1rem;color:var(--primary)}.leaderboard-name{font-weight:600;color:var(--on-surface)}.leaderboard-score{font-weight:700;color:var(--secondary);text-align:right}.leaderboard-time,.leaderboard-mistakes{text-align:right;color:var(--on-surface-variant);font-variant-numeric:tabular-nums}.score-breakdown{background:var(--surface-container-low);border-radius:16px;padding:24px}.score-breakdown-header{display:flex;align-items:center;gap:16px;margin-bottom:20px}.score-rank-badge{width:56px;height:56px;border-radius:50%;background:var(--primary);color:var(--on-primary);display:flex;align-items:center;justify-content:center;font-family:Manrope,sans-serif;font-size:1.25rem;font-weight:800;flex-shrink:0}.score-breakdown-title{font-family:Manrope,sans-serif;font-size:1.1rem;font-weight:700;color:var(--on-surface)}.score-best-tag{display:inline-block;margin-top:4px;padding:2px 10px;border-radius:99px;background:var(--completed-color);color:var(--completed-bg);font-size:.75rem;font-weight:700}.score-breakdown-lines{display:flex;flex-direction:column;gap:8px}.score-line{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;border-radius:8px;background:var(--surface-container);font-size:.9rem}.score-line--penalty{color:var(--error)}.score-line--total{background:var(--primary);color:var(--on-primary);font-family:Manrope,sans-serif;font-weight:800;font-size:1rem;margin-top:4px}.modal-backdrop{position:fixed;inset:0;background:#1a1c1d99;z-index:100;display:flex;align-items:center;justify-content:center;padding:16px}.modal-card{background:var(--surface);border-radius:16px;padding:24px;width:100%;max-width:400px;max-height:90vh;overflow-y:auto;box-shadow:0 8px 32px #00000040}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.modal-title{font-family:Manrope,sans-serif;font-size:1.25rem;font-weight:700;color:var(--primary);margin:0}.modal-close{padding:4px;color:var(--on-surface-variant)}.form-group{margin-bottom:16px}.form-label{display:block;font-size:.8rem;font-weight:600;color:var(--on-surface-variant);margin-bottom:4px;font-family:Manrope,sans-serif}.form-input{width:100%;padding:10px 12px;border:1.5px solid var(--outline-variant);border-radius:8px;font-size:.95rem;font-family:Manrope,sans-serif;color:var(--on-surface);background:var(--surface);transition:border-color .15s;box-sizing:border-box}.form-input:focus{outline:none;border-color:var(--secondary)}.form-input:disabled{background:var(--surface-container-low);color:var(--on-surface-variant)}.form-error{color:var(--error);font-size:.8rem;margin-bottom:12px}.form-success{color:#2e7d32;font-size:.85rem;margin-bottom:12px}.form-submit{width:100%;margin-top:4px}.auth-switch{text-align:center;font-size:.85rem;color:var(--on-surface-variant);margin-top:16px}.auth-link{background:none;border:none;color:var(--secondary);font-weight:600;cursor:pointer;padding:0;font-size:inherit;font-family:inherit;text-decoration:underline}.auth-link:hover{color:var(--primary)}.guest-upgrade-prompt{display:flex;align-items:center;justify-content:center;gap:6px;margin-top:12px;font-size:.8rem;color:var(--on-surface-variant)}.sync-indicator{display:inline-flex;align-items:center;gap:4px;font-size:.7rem;font-weight:600;color:var(--on-surface-variant);font-family:Manrope,sans-serif}.sync-indicator--synced{color:#2e7d32}.sync-indicator--syncing{color:var(--secondary)}.sync-indicator--offline{color:var(--error)}.theme-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.theme-card{position:relative;display:flex;flex-direction:column;align-items:center;gap:10px;padding:16px 12px;border-radius:12px;border:2px solid var(--outline-variant);background:var(--surface-container-low);transition:border-color .15s;cursor:pointer}.theme-card:hover{border-color:var(--outline)}.theme-card--active{border-color:var(--primary)}.theme-card-swatches{display:flex;gap:6px}.theme-swatch{width:24px;height:24px;border-radius:50%;border:1px solid rgba(0,0,0,.1)}.theme-card-label{display:flex;align-items:center;gap:6px;font-size:.85rem;font-weight:600;color:var(--on-surface)}.theme-card-check{position:absolute;top:8px;right:8px;font-size:1.1rem;color:var(--primary)}.stats-shell{max-width:600px;margin:0 auto;padding:80px 24px 100px}.stats-overview{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:24px}.stats-overview-card{background:var(--surface-container-low);border-radius:12px;padding:16px;text-align:center}.stats-difficulty-list{display:flex;flex-direction:column;gap:8px;margin-bottom:24px}.stats-difficulty-row{display:flex;align-items:center;gap:12px;background:var(--surface-container-low);border-radius:10px;padding:12px 16px}.stats-difficulty-label{font-weight:700;font-size:.9rem;min-width:70px;color:var(--on-surface)}.stats-difficulty-stat{display:flex;flex-direction:column;align-items:center;flex:1}.stat-value-sm{font-family:Manrope,sans-serif;font-weight:700;font-size:.95rem;color:var(--on-surface)}.stats-chart{display:flex;align-items:flex-end;gap:2px;height:80px;background:var(--surface-container-low);border-radius:10px;padding:12px 8px}.stats-chart-col{flex:1;display:flex;align-items:flex-end;height:100%}.stats-chart-bar{width:100%;min-height:2px;background:var(--primary);border-radius:2px 2px 0 0;transition:height .2s}.legal-footer{text-align:center;padding:16px 0 8px;font-size:.75rem;color:var(--on-surface-variant)}.legal-footer button{background:none;border:none;color:var(--on-surface-variant);font-size:.75rem;cursor:pointer;padding:0;text-decoration:underline}.legal-footer button:hover{color:var(--on-surface)}.legal-footer-sep{margin:0 8px;opacity:.5}.legal-shell{max-width:640px;margin:0 auto;padding:16px 20px 40px;overflow-y:auto}.legal-content h2{font-size:1.1rem;font-weight:600;margin:24px 0 8px;color:var(--on-surface)}.legal-content h3{font-size:.95rem;font-weight:600;margin:16px 0 6px;color:var(--on-surface)}.legal-content p{font-size:.875rem;line-height:1.6;margin:0 0 12px;color:var(--on-surface-variant)}.legal-content ul{font-size:.875rem;line-height:1.6;margin:0 0 12px;padding-left:20px;color:var(--on-surface-variant)}.legal-content li{margin-bottom:4px}.legal-date{font-style:italic;opacity:.7}