@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}:root{--bg: #f3f8f9;--bg-sidebar: #ffffff;--bg-card: #ffffff;--bg-input: #ffffff;--accent: #10889a;--accent-hover: #0c6f80;--accent-light: #e0f4f7;--brand-orange: #f08538;--brand-orange-dark: #ec6835;--brand-orange-light: #fef0e6;--green: #2d9e6b;--green-light: #edf7f2;--red: #d94f4f;--red-light: #fdf0f0;--text: #1a2530;--text-2: #4b5563;--text-3: #9ca3af;--border: #d9edf0;--border-focus: #10889a;--shadow-sm: 0 1px 3px rgba(16,136,154,.07);--shadow: 0 2px 8px rgba(16,136,154,.09);--shadow-md: 0 4px 20px rgba(16,136,154,.12);--radius-sm: 6px;--radius: 10px;--radius-lg: 14px;--sidebar-w: 260px;--topbar-h: 56px;--t: .15s ease}body{font-family:Inter,system-ui,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;-webkit-font-smoothing:antialiased}#root{height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4{font-weight:600;line-height:1.3;color:var(--text)}p{line-height:1.6;color:var(--text-2)}a{color:var(--accent);text-decoration:none}::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background:var(--bg)}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}@keyframes spin{to{transform:rotate(360deg)}}@keyframes bl-shimmer{0%{background-position:-600px 0}to{background-position:600px 0}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-10px)}to{opacity:1;transform:translate(0)}}@keyframes slideInRight{0%{opacity:0;transform:translate(12px)}to{opacity:1;transform:translate(0)}}@keyframes 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20px;text-align:center;font-size:13px;color:var(--text-3);display:flex;flex-direction:column;align-items:center;gap:10px}.file-panel-empty-icon{color:var(--border)}.file-panel-item{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:var(--radius-sm);cursor:pointer;transition:all var(--t);position:relative}.file-panel-item:hover{background:var(--accent-light);color:var(--accent)}.file-panel-item:before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:0;height:16px;background:var(--accent);border-radius:0 2px 2px 0;transition:width var(--t)}.file-panel-item:hover:before{width:3px}.fp-icon{width:34px;height:34px;border-radius:var(--radius-sm);background:var(--accent-light);display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--accent);transition:all var(--t)}.file-panel-item:hover 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.call-user-icon{color:var(--text-3)}.call-actions{display:flex;flex-direction:column;gap:6px}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius-sm);border:1px solid transparent;cursor:pointer;font-size:13px;font-weight:500;font-family:Inter,sans-serif;transition:all var(--t);line-height:1;white-space:nowrap}.btn:active{transform:scale(.98)}.btn:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover)}.btn-ghost{background:transparent;color:var(--text-2);border-color:var(--border)}.btn-ghost:hover{background:var(--bg);color:var(--text)}.btn-danger{background:var(--red-light);color:var(--red);border-color:transparent}.btn-danger:hover{background:#f9e0e0}.btn-orange{background:var(--brand-orange-light);color:var(--brand-orange-dark);border-color:transparent}.btn-orange:hover{background:#fde5d0}.btn-icon{padding:7px;background:transparent;color:var(--text-3);border-radius:var(--radius-sm);border:none;display:flex}.btn-icon:hover{background:var(--bg);color:var(--text)}.btn-sm{padding:6px 12px;font-size:12px}.btn-full{width:100%;justify-content:center}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#1a253059;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);z-index:1000;display:flex;align-items:center;justify-content:center;animation:fadeIn .15s ease}.modal{background:var(--bg-card);border-radius:var(--radius-lg);padding:32px;width:440px;max-width:calc(100vw - 32px);box-shadow:0 16px 48px #10889a29,0 4px 12px #0000000f;animation:slideUp .2s ease;border:1px solid rgba(16,136,154,.1)}.modal-title{font-size:17px;font-weight:700;color:var(--text);margin-bottom:4px}.modal-sub{font-size:13px;color:var(--text-3);margin-bottom:24px}.modal-label{font-size:11px;font-weight:700;color:var(--text-3);text-transform:uppercase;letter-spacing:.07em;margin-bottom:8px;display:block}.modal-section{margin-bottom:20px}.modal-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:24px}.choice-group{display:flex;gap:8px}.choice-opt{flex:1;padding:12px;border:1.5px solid var(--border);border-radius:var(--radius-sm);background:#fff;cursor:pointer;transition:all var(--t);text-align:left;font-family:Inter,sans-serif}.choice-opt:hover,.choice-opt.active{border-color:var(--accent);background:var(--accent-light)}.choice-opt-title{font-size:13px;font-weight:600;color:var(--text);margin-bottom:3px}.choice-opt-sub{font-size:11px;color:var(--text-3)}.input-field{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:var(--radius-sm);font-family:Inter,sans-serif;font-size:13px;color:var(--text);background:var(--bg-input);outline:none;transition:border var(--t),box-shadow var(--t)}.input-field:focus{border-color:var(--border-focus);box-shadow:0 0 0 3px #10889a1a}.link-box{display:flex;gap:8px;align-items:center;background:var(--bg);border-radius:var(--radius-sm);padding:10px 12px;border:1px solid var(--border);font-size:12px;color:var(--text-3);overflow:hidden}.link-box-text{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.room-id-display{font-size:15px;font-weight:700;letter-spacing:.1em;color:var(--accent);padding:8px 0}.toast-wrap{position:fixed;top:68px;right:16px;z-index:2000;display:flex;flex-direction:column;gap:8px;pointer-events:none}.toast{background:var(--bg-card);border-radius:var(--radius-sm);padding:9px 14px;box-shadow:var(--shadow-md);border:1px solid var(--border);font-size:12.5px;color:var(--text);display:flex;align-items:center;gap:8px;animation:slideInRight .2s ease;border-left:3px solid var(--accent)}.error-page{display:flex;align-items:center;justify-content:center;min-height:100vh;flex-direction:column;gap:12px;text-align:center;background:radial-gradient(ellipse 80% 60% at 15% 10%,rgba(16,136,154,.1) 0%,transparent 70%),radial-gradient(ellipse 50% 50% at 85% 80%,rgba(240,133,56,.08) 0%,transparent 65%),#f3f8f9}.error-icon-wrap{width:64px;height:64px;border-radius:var(--radius-lg);background:linear-gradient(135deg,var(--bg),var(--accent-light));border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--text-3);margin-bottom:4px}.error-title{font-size:22px;font-weight:700;color:var(--text)}.error-sub{font-size:13.5px;color:var(--text-3);max-width:300px}.upload-progress{position:absolute;bottom:68px;left:50%;transform:translate(-50%);background:var(--bg-card);border-radius:var(--radius);padding:12px 16px;box-shadow:var(--shadow-md);border:1px solid var(--border);min-width:260px;z-index:60;animation:slideUp .2s ease}.upload-progress-name{font-size:12.5px;color:var(--text-2);margin-bottom:8px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.upload-progress-bar{height:3px;background:var(--border);border-radius:2px;overflow:hidden}.upload-progress-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--brand-orange));border-radius:2px;transition:width .3s ease}.no-room-wrapper{min-height:100vh;display:flex;align-items:center;justify-content:center;background:radial-gradient(ellipse 80% 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