:root{--bg: #f3f4f7;--surface: #ffffff;--surface-2: #f1f2f6;--border: #e3e5ea;--text: #1a2233;--text-muted: #6b7280;--accent: #c1442d;--accent-soft: rgba(193, 68, 45, .12);--danger: #d64545;--bubble-mine: #3b6df0;--bubble-mine-text: #ffffff;--bubble-theirs: #ffffff;--font-display: "Space Grotesk", "Inter", sans-serif;--font-body: "Inter", sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);font-family:var(--font-body);-webkit-font-smoothing:antialiased}button{font-family:inherit;cursor:pointer}input,textarea{font-family:inherit}::selection{background:var(--accent-soft)}.app-shell{display:flex;height:100%;overflow:hidden}.login-screen{height:100vh;display:flex;align-items:center;justify-content:center;background:radial-gradient(circle at 20% 20%,#eef0f4 0%,var(--bg) 60%)}.login-card{width:360px;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:32px}.login-brand{font-family:var(--font-display);font-weight:700;font-size:22px;display:flex;align-items:center;gap:10px;margin-bottom:4px}.login-brand .dot{width:10px;height:10px;border-radius:50%;background:var(--accent)}.login-sub{color:var(--text-muted);font-size:13px;margin-bottom:24px}.field{margin-bottom:14px}.field label{display:block;font-size:12px;color:var(--text-muted);margin-bottom:6px}.field input{width:100%;padding:10px 12px;border-radius:8px;border:1px solid var(--border);background:var(--surface-2);color:var(--text);font-size:14px}.field input:focus{outline:2px solid var(--accent);outline-offset:1px}.btn-primary{width:100%;padding:11px;border-radius:8px;border:none;background:var(--accent);color:#fff;font-weight:600;font-size:14px;margin-top:6px}.btn-primary:hover{filter:brightness(1.08)}.btn-primary:disabled{opacity:.6;cursor:default}.error-text{color:var(--danger);font-size:13px;margin-bottom:12px}.sidebar{--surface: #12151f;--surface-2: #1b2030;--border: #232838;--text: #eef1f5;--text-muted: #8891a3;--accent-soft: rgba(193, 68, 45, .28);background:var(--surface);color:var(--text);border-right:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0}.sidebar-resizer{width:5px;flex-shrink:0;cursor:col-resize;background:transparent}.sidebar-resizer:hover,.sidebar-resizer.active{background:var(--accent)}.sidebar-header{padding:14px 12px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:8px}.sidebar-brand{font-family:var(--font-display);font-weight:700;font-size:16px;color:var(--text);display:flex;align-items:center;gap:7px;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.status-dot{width:9px;height:9px;border-radius:50%;flex-shrink:0}.status-dot.online{background:#35c25a;box-shadow:0 0 0 3px 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img{width:100%;height:100%;object-fit:cover}.conv-meta{flex:1;min-width:0}.conv-title{font-size:14px;font-weight:600;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-title.unread{font-weight:800}.conv-preview{font-size:12px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-preview.unread{color:var(--text);font-weight:600}.unread-dot{width:9px;height:9px;border-radius:50%;background:var(--accent);flex-shrink:0;margin-left:6px}.sidebar-footer{padding:12px 16px;border-top:1px solid var(--border);display:flex;align-items:center;gap:10px}.sidebar-footer .me-name{font-size:13px;font-weight:600;color:var(--text);flex:1}.sidebar-footer .logout{font-size:12px;color:var(--text-muted)}.sidebar-footer .logout:hover{color:var(--danger)}.chat-window{flex:1;display:flex;flex-direction:column;min-width:0}.chat-header{padding:14px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px;background:var(--surface)}.back-button-mobile{display:none;border:none;background:none;color:var(--text);padding:4px}.chat-header .title{font-family:var(--font-display);font-weight:700;font-size:17px;color:var(--text)}.chat-header .subtitle{font-size:12px;color:var(--text-muted);margin-top:1px}.chat-empty{flex:1;display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:14px}.drop-overlay{position:absolute;top:0;right:0;bottom:0;left:0;z-index:15;background:#3b6df014;border:2px dashed 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6px;border-radius:10px;background:var(--accent-soft);color:var(--accent)}.image-viewer-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:#0a0c10f0;display:flex;align-items:center;justify-content:center}.image-viewer-toolbar{position:absolute;top:16px;right:16px;display:flex;gap:8px;z-index:3}.image-viewer-toolbar button,.image-viewer-download{width:38px;height:38px;border-radius:8px;border:none;background:#ffffff1a;color:#fff;display:flex;align-items:center;justify-content:center}.image-viewer-toolbar 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transparent;padding:0;overflow:hidden;opacity:.6}.image-viewer-thumb img{width:100%;height:100%;object-fit:cover;display:block}.image-viewer-thumb.active{border-color:var(--accent);opacity:1}.image-viewer-thumb:hover{opacity:1}.search-box{padding:10px 12px;border-bottom:1px solid var(--border)}.search-box input{width:100%;padding:8px 10px;border-radius:8px;border:1px solid var(--border);background:var(--surface-2);color:var(--text);font-size:13px}.search-box input::placeholder{color:var(--text-muted)}.search-box input:focus{outline:2px solid var(--accent);outline-offset:1px}.search-section-label{display:flex;align-items:center;gap:5px;padding:10px 16px 4px;font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);font-weight:600;border-top:1px solid var(--border);margin-top:4px}.reactions-row{display:flex;gap:4px;flex-wrap:wrap;margin-top:6px}.reaction-pill{display:flex;align-items:center;gap:4px;padding:2px 7px;border-radius:12px;font-size:12px;border:1px solid var(--border);background:var(--surface-2);color:var(--text);cursor:pointer}.msg-row.mine .reaction-pill{background:#ffffff24;border-color:#ffffff4d;color:#fff}.reaction-pill.mine{border-color:var(--accent);background:var(--accent-soft)}.msg-row.mine .reaction-pill.mine{background:#ffffff59;border-color:#fff}.emoji-picker{position:absolute;z-index:20;background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:6px;display:flex;gap:4px;box-shadow:0 6px 18px #14182124}.emoji-picker button{border:none;background:none;font-size:18px;padding:4px 6px;border-radius:6px;line-height:1;display:flex;align-items:center;justify-content:center;color:var(--text-muted)}.emoji-picker button:hover{background:var(--surface-2)}.emoji-picker.full{padding:0;display:block}.emoji-picker-popover{position:absolute;z-index:20;box-shadow:0 6px 18px #1418212e;border-radius:10px;overflow:hidden}.read-receipt{display:inline-flex;align-items:center;margin-left:3px;vertical-align:middle}.read-receipt.read{color:#bfe0ff}.read-receipt.sent{color:#ffffffb3}.seen-badge{position:absolute;bottom:-8px;right:10px;width:22px;height:22px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 1px 3px #00000040;border:2px solid var(--bg)}.meeting-card{background:#fffffff0;color:#1a2233;border-radius:10px;padding:10px 12px;min-width:220px}.msg-row.mine .meeting-card{background:#fffffff5}.meeting-card-header{display:flex;align-items:center;gap:6px;font-size:14px;color:#1a2233}.meeting-card-time{font-size:12.5px;color:#6b7280;margin:4px 0 6px;font-weight:600}.meeting-card-desc{font-size:13px;color:#374151;margin-bottom:8px}.meeting-card-participants{display:flex;flex-direction:column;gap:4px;margin-bottom:4px}.meeting-participant-row{display:flex;justify-content:space-between;align-items:center;font-size:12.5px;gap:8px}.meeting-status-badge{font-size:11px;padding:2px 8px;border-radius:10px;font-weight:600;white-space:nowrap;background:#eef0f3;color:#6b7280}.meeting-status-badge.accepted{background:#e1f6ea;color:#1c8a4b}.meeting-status-badge.declined{background:#fde3e1;color:#c0392b}.meeting-status-badge.reschedule{background:#fff3d6;color:#b8790a}.meeting-actions{display:flex;gap:6px;margin-top:8px}.meeting-btn{flex:1;padding:6px 8px;border-radius:7px;border:none;font-size:12px;font-weight:600;color:#fff}.meeting-btn.accept{background:#2fae63}.meeting-btn.reschedule{background:#d99a1f}.meeting-btn.decline{background:#d6544a}.meeting-btn:hover{filter:brightness(1.08)}@media (max-width: 768px){.app-shell{position:relative}.sidebar-resizer{display:none}.sidebar{width:100%!important;min-width:100%!important}.chat-window{display:none}.back-button-mobile{display:flex;align-items:center;justify-content:center}.app-shell.mobile-chat-open .sidebar{display:none}.app-shell.mobile-chat-open .chat-window{display:flex;width:100%}.bubble{max-width:82%}.modal{width:92vw!important;max-width:420px}}