*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--primary: #4F46E5;--primary-dark: #3730A3;--primary-bg: #EEF2FF;--success: #16A34A;--success-bg: #F0FDF4;--danger: #DC2626;--danger-bg: #FEF2F2;--bg: #F9FAFB;--surface: #FFFFFF;--border: #E5E7EB;--text: #111827;--muted: #6B7280;--radius: 12px}html,body{height:100%}body{font-family:system-ui,-apple-system,Segoe UI,sans-serif;background:var(--bg);color:var(--text);-webkit-tap-highlight-color:transparent}.app{max-width:480px;margin:0 auto;min-height:100dvh;display:flex;flex-direction:column;background:var(--surface)}.app--session{height:100dvh;overflow:hidden}.app-header{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;background:var(--primary);color:#fff;position:sticky;top:0;z-index:10}.app-header h1{font-size:1.35rem;font-weight:700;letter-spacing:.02em}.sync-status{font-size:.75rem;opacity:.85}.quit-btn{background:none;border:none;color:#fff;font-size:1.1rem;cursor:pointer;padding:4px 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0}.user-menu-signout{background:none;border:none;color:var(--danger);font-size:.88rem;font-weight:600;cursor:pointer;text-align:left;padding:4px 0}.user-menu-signout:hover{text-decoration:underline}.user-menu-signin{background:#fff3;border:1.5px solid rgba(255,255,255,.7);color:#fff;font-size:.82rem;font-weight:600;padding:5px 12px;border-radius:20px;cursor:pointer;transition:background .15s;white-space:nowrap}.user-menu-signin:hover{background:#ffffff52}.center-msg{display:flex;align-items:center;justify-content:center;min-height:100dvh;font-size:1.05rem;color:var(--muted)}.error-msg{margin:12px 20px 0;padding:12px 14px;background:var(--danger-bg);color:var(--danger);border-radius:8px;font-size:.88rem}.app-settings-modal{max-width:320px}.app-settings-section{display:flex;flex-direction:column;gap:10px}.lang-selector{display:flex;gap:8px}.lang-btn{flex:1;padding:10px 0;border:2px solid var(--border);border-radius:10px;background:var(--surface);color:var(--text);font-size:.95rem;font-weight:600;cursor:pointer;transition:all .15s}.lang-btn:hover{border-color:var(--primary);color:var(--primary)}.lang-btn.active{border-color:var(--primary);background:var(--primary);color:#fff}.settings-gear-btn{background:none;border:none;color:#fff;font-size:1.15rem;cursor:pointer;padding:4px 6px;border-radius:6px;opacity:.8;line-height:1}.settings-gear-btn:hover{opacity:1;background:#ffffff26}.letters-hero-card{display:flex;align-items:center;gap:14px;padding:18px 20px;background:linear-gradient(135deg,#4f46e5,#7c3aed);border:none;border-radius:var(--radius);cursor:pointer;text-align:left;color:#fff;transition:transform .12s,box-shadow .12s;box-shadow:0 4px 16px #4f46e540;position:relative;overflow:hidden}.letters-hero-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px #4f46e552}.letters-hero-card:active{transform:translateY(0)}.letters-hero-card__chars{font-size:1.7rem;font-weight:700;letter-spacing:.08em;opacity:.92;flex-shrink:0;line-height:1}.letters-hero-card__name{font-size:1.05rem;font-weight:700;flex:1;line-height:1.2}.letters-hero-card__desc{font-size:.75rem;opacity:.85;display:block;margin-top:2px;font-weight:400}.letters-hero-card__arrow{font-size:1.3rem;opacity:.7;flex-shrink:0}.letters-hero-card__name,.letters-hero-card__desc{display:block}.letters-menu{display:flex;flex-direction:column;min-height:100dvh}.letters-menu-body{flex:1;overflow-y:auto;padding:20px 16px 32px;display:flex;flex-direction:column;gap:28px}.alpha-section__title{font-size:.8rem;font-weight:700;color:var(--primary);text-transform:uppercase;letter-spacing:.06em;margin-bottom:12px}.alpha-grid{display:grid;gap:8px}.alpha-grid--vowels,.alpha-grid--varga{grid-template-columns:repeat(5,1fr)}.alpha-tile{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;padding:10px 4px;border:2px solid var(--border);border-radius:10px;background:var(--surface);cursor:pointer;transition:border-color .12s,background .12s,transform .08s,box-shadow .12s;-webkit-tap-highlight-color:transparent}.alpha-tile:hover{border-color:var(--primary);background:var(--primary-bg);box-shadow:0 2px 8px #4f46e51f}.alpha-tile:active{transform:scale(.93)}.alpha-tile--vowel{border-color:#c4b5fd;background:#f5f3ff}.alpha-tile--vowel:hover{border-color:#7c3aed;background:#ede9fe}.alpha-tile__char{font-size:1.5rem;font-weight:700;line-height:1;color:var(--text)}.alpha-tile--vowel .alpha-tile__char{color:#6d28d9}.alpha-tile__roman{font-size:.58rem;color:var(--muted);letter-spacing:.02em}.alpha-tile--vowel .alpha-tile__roman{color:#7c3aed}.alpha-varga{margin-bottom:14px}.alpha-varga__label{font-size:.7rem;font-weight:600;color:var(--muted);display:block;margin-bottom:6px}.letter-explorer{display:flex;flex-direction:column;min-height:100dvh}.explorer-header-letter{font-size:1.5rem;font-weight:700;color:#fff;line-height:1}.explorer-header-pos{font-size:.75rem;color:#ffffffb3;font-weight:600;white-space:nowrap}.letter-explorer-body{flex:1;display:flex;flex-direction:column;gap:0;overflow-y:auto}.hero-carousel-viewport{overflow:hidden;flex-shrink:0;background:linear-gradient(160deg,#4f46e5,#7c3aed);cursor:grab;touch-action:pan-y;-webkit-tap-highlight-color:transparent}.hero-carousel-viewport:active{cursor:grabbing}.hero-carousel-track{display:flex;width:300%;will-change:transform}.hero-slide{flex:0 0 33.333%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;padding:28px 24px 22px;color:#fff;min-height:200px;transition:opacity .2s}.hero-slide--side{opacity:.32;pointer-events:none}.hero-slide--active{opacity:1}.letter-hero-card__char{font-size:6rem;font-weight:700;line-height:1;text-shadow:0 4px 24px rgba(0,0,0,.18);user-select:none;-webkit-user-select:none}.hero-slide--side .letter-hero-card__char{font-size:4rem}.letter-hero-card__roman{font-size:1.1rem;opacity:.85;font-weight:500;letter-spacing:.06em}.letter-hero-card__type{font-size:.7rem;text-transform:uppercase;letter-spacing:.1em;opacity:.65;font-weight:600}.letter-hero-card__play{margin-top:8px;padding:10px 24px;background:#fff3;border:2px solid rgba(255,255,255,.5);border-radius:24px;color:#fff;font-size:.95rem;font-weight:600;cursor:pointer;transition:background .15s;-webkit-tap-highlight-color:transparent}.letter-hero-card__play:hover{background:#ffffff52}.letter-hero-card__play:active{background:#ffffff73}.hero-nav-hints{display:flex;justify-content:space-between;padding:6px 20px 10px}.hero-nav-hint{font-size:.78rem;color:#ffffff80;font-weight:600;letter-spacing:.04em;-webkit-user-select:none;user-select:none}.guninthalu-section{padding:16px 16px 12px;border-bottom:1px solid var(--border);flex-shrink:0}.guninthalu-section__title{font-size:.78rem;font-weight:700;color:var(--primary);text-transform:uppercase;letter-spacing:.06em;margin-bottom:10px}.guninthalu-strip{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:none}.guninthalu-strip::-webkit-scrollbar{display:none}.gunintha-card{flex-shrink:0;scroll-snap-align:start;display:flex;flex-direction:column;align-items:center;gap:3px;padding:10px 14px;background:var(--surface);border:2px solid var(--border);border-radius:10px;cursor:pointer;transition:border-color .12s,background .12s,transform .08s;-webkit-tap-highlight-color:transparent}.gunintha-card:hover{border-color:var(--primary);background:var(--primary-bg)}.gunintha-card:active{transform:scale(.92)}.gunintha-card--active{border-color:var(--primary);background:var(--primary)}.gunintha-card--active .gunintha-card__form,.gunintha-card--active .gunintha-card__roman{color:#fff}.gunintha-card__form{font-size:1.3rem;font-weight:700;color:var(--text);line-height:1}.gunintha-card__roman{font-size:.6rem;color:var(--muted);letter-spacing:.02em}.word-cards-section{flex:1;display:flex;flex-direction:column;padding:16px 16px 24px;min-height:300px}.word-cards-section__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.word-cards-section__title{font-size:.78rem;font-weight:700;color:var(--primary);text-transform:uppercase;letter-spacing:.06em}.word-cards-section__counter{font-size:.8rem;font-weight:600;color:var(--muted)}.word-cards-empty{flex:1;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:.9rem}.word-card-stage{flex:1;display:flex;align-items:center;gap:8px}.word-card-wrap{flex:1;position:relative;min-height:220px}.word-card{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:28px 20px;background:var(--surface);border:2px solid var(--border);border-radius:16px;box-shadow:0 4px 20px #00000014;touch-action:none;user-select:none;-webkit-user-select:none}.word-card--shadow{transform:scale(.96) translateY(6px);background:#f3f4f6;border-color:#e5e7eb;box-shadow:none;z-index:0;pointer-events:none;opacity:.6}.word-card--front{z-index:1}.word-card--front:hover{box-shadow:0 6px 28px #4f46e524}.word-card__word{font-size:3rem;font-weight:700;color:var(--text);line-height:1.15;text-align:center}.word-card--shadow .word-card__word{font-size:1.5rem;color:var(--muted)}.word-card__meaning{font-size:1rem;color:var(--muted);text-align:center}.word-card__play{margin-top:8px;padding:9px 22px;background:var(--primary);color:#fff;border:none;border-radius:22px;font-size:.9rem;font-weight:600;cursor:pointer;transition:background .12s;-webkit-tap-highlight-color:transparent}.word-card__play:hover{background:var(--primary-dark)}.word-card__swipe-hint{font-size:.7rem;color:var(--muted);opacity:.6;margin-top:4px;letter-spacing:.04em}.word-nav-arrow{flex-shrink:0;width:36px;height:36px;border-radius:50%;border:2px solid var(--border);background:var(--surface);font-size:1.4rem;color:var(--text);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:border-color .12s,background .12s;line-height:1;-webkit-tap-highlight-color:transparent}.word-nav-arrow:hover:not(:disabled){border-color:var(--primary);background:var(--primary-bg);color:var(--primary)}.word-nav-arrow:disabled{opacity:.25;cursor:default}