:root{--bg-primary: #0a0a1a;--bg-secondary: #12122a;--bg-card: #1a1a3e;--bg-hover: #22224e;--text-primary: #f0f0ff;--text-secondary: #8888aa;--text-muted: #555577;--accent: #6c63ff;--accent-hover: #5a52e0;--accent-glow: rgba(108, 99, 255, .3);--success: #4ecdc4;--error: #ff6b6b;--warning: #ffd93d;--border: #2a2a4e;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 20px;--radius-full: 9999px;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono: "SF Mono", "Fira Code", "Fira Mono", Menlo, monospace}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);line-height:1.5;min-height:100dvh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app{max-width:480px;margin:0 auto;padding:0 16px;min-height:100dvh}.page{display:flex;flex-direction:column;min-height:100dvh;padding:16px 0}.page-header{display:flex;align-items:center;gap:12px;padding:8px 0 24px}.page-header h1{font-size:1.5rem;font-weight:700}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 24px;border:none;border-radius:var(--radius-md);font-size:1rem;font-weight:600;cursor:pointer;transition:all .15s ease;-webkit-tap-highlight-color:transparent;min-height:48px}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent);color:#fff;width:100%}.btn-primary:hover:not(:disabled){background:var(--accent-hover);box-shadow:0 0 20px var(--accent-glow)}.btn-secondary{background:var(--bg-card);color:var(--text-primary);border:1px solid var(--border);width:100%}.btn-secondary:hover:not(:disabled){background:var(--bg-hover)}.btn-large{flex-direction:column;padding:20px 24px;text-align:center}.btn-icon{font-size:1.5rem}.btn-desc{font-size:.8rem;font-weight:400;color:var(--text-secondary);margin-top:4px}.back-btn{background:none;border:none;color:var(--text-secondary);font-size:1rem;cursor:pointer;padding:8px;border-radius:var(--radius-sm);-webkit-tap-highlight-color:transparent}.back-btn:hover{color:var(--text-primary);background:var(--bg-card)}.landing{justify-content:center;gap:48px}.landing-hero{text-align:center}.landing-title{font-size:2.5rem;font-weight:800;letter-spacing:-.02em;display:flex;align-items:center;justify-content:center;gap:12px}.logo-icon{font-size:2rem}.landing-subtitle{color:var(--text-secondary);font-size:1.1rem;margin-top:8px}.landing-actions{display:flex;flex-direction:column;gap:16px}.divider{display:flex;align-items:center;gap:16px;color:var(--text-muted);font-size:.85rem}.divider:before,.divider:after{content:"";flex:1;height:1px;background:var(--border)}.language-selector{margin-bottom:24px}.language-label{display:block;font-size:.9rem;font-weight:600;color:var(--text-secondary);margin-bottom:12px;text-transform:uppercase;letter-spacing:.05em}.language-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.language-option{display:flex;flex-direction:column;align-items:center;gap:4px;padding:12px 8px;background:var(--bg-card);border:2px solid transparent;border-radius:var(--radius-md);cursor:pointer;transition:all .15s ease;-webkit-tap-highlight-color:transparent;min-height:48px}.language-option:hover:not(:disabled){background:var(--bg-hover);border-color:var(--border)}.language-option.selected{border-color:var(--accent);background:#6c63ff1a}.language-option:disabled{opacity:.5;cursor:not-allowed}.language-flag{font-size:1.5rem}.language-native{font-size:.8rem;font-weight:600;color:var(--text-primary)}.language-name{font-size:.65rem;color:var(--text-muted)}.create-step{display:flex;flex-direction:column;gap:16px;flex:1}.qr-display{align-items:center;text-align:center}.room-code{display:flex;flex-direction:column;align-items:center;gap:4px;margin-bottom:8px}.room-code-label{font-size:.8rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.1em}.room-code-value{font-family:var(--font-mono);font-size:2.5rem;font-weight:800;letter-spacing:.1em;color:var(--accent)}.qr-container{background:#fff;padding:16px;border-radius:var(--radius-lg);display:inline-block}.qr-hint{color:var(--text-secondary);font-size:.9rem}.waiting-indicator{display:flex;align-items:center;gap:8px;color:var(--text-secondary);font-size:.9rem}.pulse-dot{width:10px;height:10px;background:var(--accent);border-radius:50%;animation:pulse 1.5s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.8)}}.join-step{display:flex;flex-direction:column;gap:16px;flex:1}.room-code-input{margin-bottom:8px}.room-code-input label{display:block;font-size:.9rem;font-weight:600;color:var(--text-secondary);margin-bottom:8px;text-transform:uppercase;letter-spacing:.05em}.code-input{width:100%;padding:16px;font-family:var(--font-mono);font-size:1.8rem;font-weight:700;letter-spacing:.15em;text-align:center;text-transform:uppercase;background:var(--bg-card);border:2px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);outline:none;transition:border-color .15s ease}.code-input:focus{border-color:var(--accent)}.code-input.invalid{border-color:var(--error)}.code-input:disabled{opacity:.5}.code-hint{display:block;font-size:.8rem;color:var(--text-muted);margin-top:6px;text-align:center}.code-error{display:block;font-size:.8rem;color:var(--error);margin-top:6px;text-align:center}.paired,.error{align-items:center;text-align:center;justify-content:center}.success-icon{width:64px;height:64px;border-radius:50%;background:var(--success);color:#fff;font-size:2rem;display:flex;align-items:center;justify-content:center;margin-bottom:8px}.error-icon{width:64px;height:64px;border-radius:50%;background:var(--error);color:#fff;font-size:2rem;display:flex;align-items:center;justify-content:center;margin-bottom:8px}.redirect-hint{color:var(--text-muted);font-size:.85rem}.session-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:16px;flex:1}.session-icon{font-size:4rem}@media(max-width:360px){.language-grid{grid-template-columns:repeat(2,1fr)}.room-code-value{font-size:2rem}.code-input{font-size:1.4rem}}@media(min-width:768px){.language-grid{grid-template-columns:repeat(4,1fr)}}