@import"https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;500;600&family=Inter:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500&display=swap";:root{--bg-primary: #ffffff;--bg-secondary: #fafafa;--text-primary: #0a0a0a;--text-secondary: #666666;--text-muted: #999999;--border-light: #e5e5e5;--border-medium: #d0d0d0;--accent: #0a0a0a;--accent-hover: #333333;--error: #dc2626;--error-bg: #fee2e2;--success: #16a34a;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--font-display: "Playfair Display", Georgia, serif;--font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", monospace;--transition-fast: .15s ease;--transition-base: .2s ease}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{font-family:var(--font-body);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:15px}body{background:var(--bg-primary);color:var(--text-primary);min-height:100vh;line-height:1.6}.app{min-height:100vh}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border:none;border-radius:var(--radius-md);font-family:var(--font-body);font-size:.95rem;font-weight:500;cursor:pointer;transition:all var(--transition-base);text-decoration:none}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.btn-secondary{background:transparent;color:var(--text-primary);border:1.5px solid var(--border-light)}.btn-secondary:hover:not(:disabled){border-color:var(--text-primary)}.btn-sm{padding:8px 16px;font-size:.875rem}.btn-icon{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;background:transparent;border:1.5px solid var(--border-light);border-radius:var(--radius-md);cursor:pointer;color:var(--text-secondary);transition:all var(--transition-base)}.btn-icon:hover{border-color:var(--text-primary);color:var(--text-primary)}.input{width:100%;padding:14px 18px;background:#fff;border:1.5px solid var(--border-light);border-radius:var(--radius-md);color:var(--text-primary);font-family:var(--font-body);font-size:.95rem;transition:all var(--transition-base);outline:none;resize:none}.input::placeholder{color:var(--text-muted)}.input:focus{border-color:var(--text-primary)}.spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}.spinner-dark{border-color:#0000001a;border-top-color:var(--text-primary)}@keyframes spin{to{transform:rotate(360deg)}}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);padding:12px 20px;border-radius:var(--radius-md);font-size:.9rem;z-index:100;animation:slideUp .3s ease;max-width:90%}.toast-error{background:var(--error-bg);color:var(--error)}.toast-close{background:none;border:none;color:inherit;cursor:pointer;font-size:1rem;margin-left:8px;opacity:.6}.toast-close:hover{opacity:1}@keyframes slideUp{0%{transform:translate(-50%) translateY(20px);opacity:0}to{transform:translate(-50%) translateY(0);opacity:1}}.home-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:40px 24px}.home-content{width:100%;max-width:360px;animation:fadeIn .5s ease-out}@keyframes 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var(--border-light)}.action-secondary:hover:not(:disabled){border-color:var(--text-primary)}.action-secondary:disabled{opacity:.3;cursor:not-allowed}.btn-content{display:inline-flex;align-items:center;gap:8px}.spinner-simple{width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}.divider-simple{display:flex;align-items:center;gap:16px}.divider-simple .divider-line{flex:1;height:1px;background:var(--border-light)}.divider-simple .divider-text{color:var(--text-muted);font-size:.875rem;text-transform:lowercase}.join-form{display:flex;flex-direction:column;gap:12px}.join-input{width:100%;padding:16px 20px;border:1.5px solid var(--border-light);border-radius:var(--radius-md);font-size:1.1rem;text-align:center;letter-spacing:.3em;font-family:var(--font-mono);text-transform:uppercase;transition:all var(--transition-base);outline:none;background:#fff;color:var(--text-primary)}.join-input::placeholder{color:var(--text-muted);letter-spacing:.1em;text-transform:none;font-size:.95rem}.join-input:focus{border-color:var(--text-primary)}.error-toast{margin-top:24px;padding:12px 16px;background:var(--error-bg);color:var(--error);border-radius:var(--radius-md);font-size:.9rem;text-align:center;animation:shake .4s ease-in-out}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}.home-footer{margin-top:60px;text-align:center}.home-footer p{font-size:.875rem;color:var(--text-muted)}.room-page{height:100vh;display:flex;flex-direction:column;background:var(--bg-primary)}.room-not-found{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;text-align:center;padding:24px}.not-found-icon{font-size:3rem;color:var(--text-muted);margin-bottom:8px}.room-not-found h2{font-family:var(--font-display);font-size:1.75rem;font-weight:400}.room-not-found p{color:var(--text-secondary);margin-bottom:8px}.room-header{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;background:#fff;border-bottom:1px solid var(--border-light);flex-shrink:0}.header-left{display:flex;align-items:center;gap:16px}.header-room-info{display:flex;align-items:baseline;gap:8px}.header-label{color:var(--text-muted);font-size:.8rem;text-transform:uppercase;letter-spacing:.5px}.header-room-id{font-family:var(--font-mono);font-size:1.1rem;font-weight:500;color:var(--text-primary);letter-spacing:2px}.room-messages{flex:1;overflow-y:auto;padding:24px;background:var(--bg-secondary)}.room-messages::-webkit-scrollbar{width:6px}.room-messages::-webkit-scrollbar-track{background:transparent}.room-messages::-webkit-scrollbar-thumb{background:var(--border-light);border-radius:3px}.room-messages::-webkit-scrollbar-thumb:hover{background:var(--border-medium)}.empty-state,.loading-state{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;color:var(--text-secondary)}.empty-icon{font-size:3rem;color:var(--border-medium)}.empty-state 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var(--border-light)}.msg-file-icon{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:var(--bg-secondary);border-radius:var(--radius-md);font-size:1.25rem;flex-shrink:0}.msg-file-info{flex:1;min-width:0}.msg-file-name{display:block;font-size:.9rem;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--text-primary)}.msg-file-size{font-size:.8rem;color:var(--text-muted);margin-top:2px;display:block}.msg-download-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius-md);background:var(--accent);color:#fff;font-size:.8rem;font-weight:500;text-decoration:none;transition:all var(--transition-base);flex-shrink:0}.msg-download-btn:hover{background:var(--accent-hover)}.msg-preview{border-bottom:1px solid 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20px;background:#fff}.msg-time{font-size:.8rem;color:var(--text-muted);font-family:var(--font-mono)}.msg-actions{display:flex;gap:8px}.msg-action-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border:1px solid var(--border-light);border-radius:var(--radius-sm);background:#fff;cursor:pointer;font-family:inherit;font-size:.8rem;font-weight:500;color:var(--text-secondary);transition:all var(--transition-fast)}.msg-action-btn:hover{border-color:var(--text-primary);color:var(--text-primary)}.msg-action-btn:disabled{opacity:.4;cursor:not-allowed}.msg-copy-btn.copied{background:#dcfce7;border-color:#86efac;color:#16a34a}.msg-delete-btn:hover{background:var(--error-bg);border-color:#fecaca;color:var(--error)}.lightbox{position:fixed;inset:0;z-index:1000;background:#000000e6;display:flex;align-items:center;justify-content:center;cursor:zoom-out;animation:lbIn .2s ease}@keyframes lbIn{0%{opacity:0}to{opacity:1}}.lightbox img{max-width:95vw;max-height:95vh;object-fit:contain;cursor:default}.lightbox-close{position:absolute;top:20px;right:24px;width:44px;height:44px;background:#ffffff1a;border:none;border-radius:50%;color:#fff;font-size:1.5rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-base)}.lightbox-close:hover{background:#fff3}.upload-progress-bar{padding:12px 24px;display:flex;align-items:center;gap:16px;background:#fff;border-top:1px solid var(--border-light);flex-shrink:0}.progress-track{flex:1;height:4px;background:var(--border-light);border-radius:2px;overflow:hidden}.progress-fill{height:100%;background:var(--accent);border-radius:2px;transition:width .3s ease}.progress-text{font-family:var(--font-mono);font-size:.8rem;color:var(--text-secondary);white-space:nowrap}.room-input{padding:16px 24px;background:#fff;border-top:1px solid 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16px}.msg-image-preview,.msg-image-preview img{max-height:300px}.upload-progress-bar{padding:10px 16px}}::selection{background:#0000001a}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-light);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--border-medium)}.modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s ease}.modal-content{background:#fff;border-radius:var(--radius-lg);padding:32px;max-width:360px;width:90%;text-align:center;animation:scaleIn .2s ease}@keyframes scaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.modal-content h3{font-family:var(--font-display);font-size:1.25rem;font-weight:500;margin-bottom:8px}.modal-content p{color:var(--text-secondary)}.modal-actions{display:flex;gap:12px;margin-top:24px}.modal-actions .btn{flex:1}.btn-danger{background:#dc2626;color:#fff}.btn-danger:hover:not(:disabled){background:#b91c1c}.btn-danger:disabled{opacity:.5;cursor:not-allowed}