*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--primary: #ff6b6b;--primary-dark: #e05555;--accent: #4ecdc4;--accent-dark: #3dbdb5;--bg: #0f0f1a;--bg-card: #1a1a2e;--bg-card-hover: #222240;--text: #ffffff;--text-muted: #8888aa;--border: #2a2a4a;--error: #ff4757;--success: #2ed573;--radius: 16px;--radius-sm: 10px}html{font-size:16px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100dvh;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}#root{min-height:100dvh;display:flex;align-items:center;justify-content:center}.app{width:100%;max-width:420px;padding:1rem;margin:0 auto}.screen{width:100%;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.card{background:var(--bg-card);border:1px solid 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.2s}.phone-input:focus,.room-input:focus,.invite-input:focus{border-color:var(--accent)}.phone-input::placeholder,.room-input::placeholder{color:var(--text-muted)}.error-text{color:var(--error);font-size:.85rem;margin-top:.5rem;text-align:left}.button-group{display:flex;flex-direction:column;gap:.75rem;margin-top:1.2rem}.btn{padding:.9rem 1.5rem;border:none;border-radius:var(--radius-sm);font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s;width:100%}.btn:active{transform:scale(.98)}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-secondary{background:transparent;color:var(--text-muted);border:1px solid var(--border)}.btn-secondary:hover{background:var(--bg-card-hover);color:var(--text)}.btn-accent{background:var(--accent);color:#fff}.btn-accent:hover{background:var(--accent-dark)}.join-input-group{display:flex;gap:.5rem}.join-input-group .room-input{flex:1}.join-input-group .btn{width:auto;white-space:nowrap}.waiting-screen{text-align:center}.waiting-content{display:flex;flex-direction:column;align-items:center;gap:1rem}.spinner{width:48px;height:48px;border:4px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.invite-link-box{display:flex;gap:.5rem;width:100%}.invite-input{flex:1;font-size:.8rem;color:var(--accent)}.invite-link-box .btn{width:auto}.hint-text{color:var(--text-muted);font-size:.85rem}.game-screen{display:flex;flex-direction:column;align-items:center;gap:1.5rem}.game-header{display:flex;justify-content:space-between;align-items:center;width:100%;padding:0 .5rem}.player-indicator{display:flex;flex-direction:column;align-items:center;gap:.25rem}.symbol-badge{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:8px;font-weight:700;font-size:1.1rem}.symbol-badge[data-symbol=X]{background:#ff6b6b33;color:var(--primary)}.symbol-badge[data-symbol=O]{background:#4ecdc433;color:var(--accent)}.player-label{font-size:.75rem;color:var(--text-muted)}.turn-indicator{text-align:center}.your-turn{color:var(--accent);font-weight:600;font-size:.9rem}.their-turn{color:var(--text-muted);font-size:.9rem}.board{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;width:100%;max-width:320px;aspect-ratio:1}.cell{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:2.5rem;font-weight:700;transition:all .2s;aspect-ratio:1;position:relative;overflow:hidden}.cell:hover:not(:disabled){background:var(--bg-card-hover);border-color:var(--accent)}.cell:disabled{cursor:default}.cell.winning{background:#4ecdc426;border-color:var(--accent);animation:pulse .6s ease infinite alternate}@keyframes pulse{0%{box-shadow:0 0 #4ecdc466}to{box-shadow:0 0 15px 3px #4ecdc433}}.symbol{animation:popIn .25s cubic-bezier(.68,-.55,.265,1.55)}.symbol-x{color:var(--primary)}.symbol-o{color:var(--accent)}@keyframes popIn{0%{transform:scale(0);opacity:0}to{transform:scale(1);opacity:1}}.exit-btn{margin-top:.5rem}.result-screen{text-align:center}.result-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:2rem 1.5rem}.result-emoji{font-size:4rem;margin-bottom:.5rem}.result-text{font-size:1.6rem;font-weight:700;margin-bottom:1.5rem}.final-board{max-width:200px;margin:0 auto 1.5rem}.final-board .board{gap:5px}.final-board .cell{font-size:1.8rem;border-radius:8px}.result-actions{display:flex;flex-direction:column;gap:.75rem}@media (min-width: 480px){.app{padding:2rem}.board{max-width:340px}}@media (max-height: 700px){.logo-container{margin-bottom:1rem}.logo-heart{font-size:2rem}.app-title{font-size:1.4rem}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}.input-label-spaced{margin-top:1rem}.invite-message{color:var(--accent);margin-bottom:1.25rem;font-weight:600}.btn:disabled{opacity:.65;cursor:not-allowed}.closed-message{color:var(--text-muted);margin:-.5rem 0 1.5rem}