:root{--brand: #0f766e;--brand-dark: #0b5d56;--brand-light: #14b8a6;--bg: #e9eef1;--own-bubble: #d1f3ee;--other-bubble: #ffffff;--text: #1f2933;--muted: #6b7280;--danger: #dc2626;--shadow: 0 1px 2px rgba(0, 0, 0, .12);--radius: 16px;font-family:Segoe UI,Rubik,system-ui,-apple-system,Arial,sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);min-height:100dvh}button{font-family:inherit;cursor:pointer}.login-screen{min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:24px;background:linear-gradient(160deg,var(--brand) 0%,var(--brand-dark) 100%)}.login-card{width:100%;max-width:380px;background:#fff;border-radius:20px;padding:32px 24px;box-shadow:0 12px 40px #00000040;display:flex;flex-direction:column}.login-logo{font-size:44px;text-align:center;margin-bottom:8px}.login-card h1{font-size:20px;text-align:center;margin:0 0 4px;color:var(--brand-dark)}.login-sub{text-align:center;color:var(--muted);margin:0 0 20px;font-size:14px}.login-card label{font-size:13px;font-weight:600;margin-bottom:6px;color:var(--text)}.login-card input{padding:12px 14px;border:1px solid #d1d5db;border-radius:12px;font-size:16px;margin-bottom:16px;outline:none;transition:border-color .15s}.login-card input:focus{border-color:var(--brand)}.login-card button[type=submit]{background:var(--brand);color:#fff;border:none;padding:13px;border-radius:12px;font-size:16px;font-weight:600;transition:background .15s}.login-card button[type=submit]:hover{background:var(--brand-dark)}.login-card button[type=submit]:disabled{opacity:.6}.login-error{background:#fee2e2;color:var(--danger);padding:10px 12px;border-radius:10px;font-size:14px;margin-bottom:14px;text-align:center}.login-hint{text-align:center;color:var(--muted);font-size:12px;margin:14px 0 0}.login-info{background:#dcfce7;color:#166534;padding:10px 12px;border-radius:10px;font-size:14px;margin-bottom:14px;text-align:center}.link-btn{background:none;border:none;color:var(--brand);font-size:14px;margin-top:12px;text-decoration:underline;align-self:center}.chat-screen{height:100dvh;display:flex;flex-direction:column;max-width:720px;margin:0 auto;background:var(--bg);box-shadow:0 0 24px #00000014}.chat-header{background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:space-between;padding:12px 16px;padding-top:calc(12px + env(safe-area-inset-top));box-shadow:var(--shadow);z-index:2}.chat-header-info{display:flex;align-items:center;gap:12px}.chat-avatar{width:42px;height:42px;border-radius:50%;background:#fff3;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px}.chat-title{font-weight:700;font-size:16px}.chat-subtitle{font-size:13px;opacity:.85}.logout-btn{background:#ffffff26;color:#fff;border:none;padding:8px 14px;border-radius:10px;font-size:14px}.logout-btn:hover{background:#ffffff47}.chat-messages{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain;padding:16px;display:flex;flex-direction:column;gap:8px}.typing-bubble{display:flex;gap:5px;align-items:center;padding:14px 16px}.typing-dot{width:7px;height:7px;border-radius:50%;background:var(--muted);animation:typing 1.2s infinite ease-in-out}.typing-dot:nth-child(2){animation-delay:.2s}.typing-dot:nth-child(3){animation-delay:.4s}@keyframes typing{0%,60%,to{transform:translateY(0);opacity:.4}30%{transform:translateY(-4px);opacity:1}}.chat-status{text-align:center;color:var(--muted);font-size:14px;margin:auto;padding:24px}.chat-status.error{color:var(--danger)}.msg{display:flex;max-width:80%}.msg.own{align-self:flex-end}.msg.other{align-self:flex-start}.bubble{padding:8px 12px;border-radius:var(--radius);background:var(--other-bubble);box-shadow:var(--shadow);position:relative;word-break:break-word}.msg.own .bubble{background:var(--own-bubble);border-bottom-inline-end:0}.bubble-text{white-space:pre-wrap;line-height:1.4;font-size:15px}.bubble-time{font-size:11px;color:var(--muted);margin-top:4px;text-align:start}.attachment{text-decoration:none;color:inherit;display:block}.attachment.image img{max-width:220px;max-height:240px;border-radius:10px;display:block}.attachment.image .attachment-name{font-size:12px;color:var(--muted);margin-top:4px;display:block}.attachment.file{display:flex;align-items:center;gap:10px;background:#0000000a;border-radius:10px;padding:8px 10px;margin-bottom:4px}.attachment-icon{font-size:20px}.attachment-meta{display:flex;flex-direction:column;flex:1;min-width:0}.attachment-name{font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.attachment-size{font-size:12px;color:var(--muted)}.attachment-download{font-size:16px}.composer{background:#fff;border-top:1px solid #e5e7eb;padding:8px 12px;padding-bottom:calc(8px + env(safe-area-inset-bottom))}.composer-row{display:flex;align-items:flex-end;gap:8px}.composer-input{flex:1;resize:none;border:1px solid #d1d5db;border-radius:20px;padding:10px 14px;font-size:16px;font-family:inherit;max-height:120px;outline:none;line-height:1.4}.composer-input:focus{border-color:var(--brand)}.composer-attach,.composer-send{border:none;width:42px;height:42px;border-radius:50%;font-size:18px;flex-shrink:0;display:flex;align-items:center;justify-content:center}.composer-attach{background:#f1f5f9}.composer-send{background:var(--brand);color:#fff}.composer-send:disabled{opacity:.4}.composer-send:not(:disabled):hover{background:var(--brand-dark)}.composer-file-chip{display:flex;align-items:center;gap:8px;background:#f1f5f9;border-radius:10px;padding:6px 10px;margin-bottom:8px;font-size:14px}.composer-file-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.composer-file-remove{background:none;border:none;color:var(--muted);font-size:14px}.composer-error{color:var(--danger);font-size:13px;margin-bottom:8px;text-align:center}@media (min-width: 721px){.chat-screen{height:100dvh;border-radius:0}}.admin-shell{height:100dvh;display:grid;grid-template-columns:360px 1fr;background:var(--bg)}.admin-sidebar{display:flex;flex-direction:column;background:#fff;border-inline-end:1px solid #e5e7eb;min-height:0}.admin-header{background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:space-between;padding:14px 16px;padding-top:calc(14px + env(safe-area-inset-top))}.admin-main{min-height:0;display:flex}.admin-empty{margin:auto;color:var(--muted);font-size:15px;padding:24px;text-align:center}.conv-list{overflow-y:auto;flex:1}.conv-item{width:100%;text-align:start;background:none;border:none;border-bottom:1px solid #f1f5f9;padding:12px 16px;display:flex;flex-direction:column;gap:4px;font-family:inherit}.conv-item:hover{background:#f8fafc}.conv-item.active{background:#ecfdf5;border-inline-start:3px solid var(--brand)}.conv-item-top{display:flex;justify-content:space-between;align-items:baseline}.conv-name{font-weight:700;font-size:15px;color:var(--text)}.conv-time{font-size:11px;color:var(--muted)}.conv-preview{font-size:13px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conv-item-bottom{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:2px}.status-badge{font-size:11px;font-weight:700;padding:2px 8px;border-radius:999px}.conv-assignee{font-size:11px;color:var(--muted)}.conv-unread{margin-inline-start:auto;background:var(--brand);color:#fff;font-size:11px;font-weight:700;min-width:20px;height:20px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;padding:0 6px}.conv-detail{flex:1;display:flex;flex-direction:column;min-height:0}.conv-detail-header{display:flex;align-items:center;gap:12px;padding:12px 16px;background:#fff;border-bottom:1px solid #e5e7eb;flex-wrap:wrap}.conv-detail-title{font-weight:700;font-size:16px;flex:1}.back-btn{display:none;background:#f1f5f9;border:none;width:36px;height:36px;border-radius:50%;font-size:18px}.conv-controls{display:flex;gap:8px;align-items:center}.conv-controls select,.assignee-input{border:1px solid #d1d5db;border-radius:8px;padding:7px 10px;font-size:14px;font-family:inherit}.assignee-input{width:130px}@media (max-width: 720px){.admin-shell{grid-template-columns:1fr}.admin-main,.admin-shell.has-selection .admin-sidebar{display:none}.admin-shell.has-selection .admin-main{display:flex}.back-btn{display:inline-flex}}