:root{--bg: #0f172a;--bg-elevated: #1e293b;--bg-pane: #f8fafc;--fg: #0f172a;--fg-muted: #475569;--border: #e2e8f0;--primary: #2563eb;--primary-hover: #1d4ed8;--danger: #dc2626;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;height:100%}body{background:var(--bg-pane);color:var(--fg);font-size:14px;line-height:1.4}.app-shell{display:grid;grid-template-columns:240px 1fr;height:100vh;overflow:hidden}.sidebar{background:var(--bg);color:#f1f5f9;display:flex;flex-direction:column;padding:16px}.sidebar-brand{font-size:16px;font-weight:600;padding:8px 4px 16px;border-bottom:1px solid #1e293b;margin-bottom:12px}.sidebar nav{flex:1;display:flex;flex-direction:column;gap:2px}.nav-link{display:block;padding:8px 12px;border-radius:6px;color:#cbd5e1;text-decoration:none}.nav-link:hover{background:#1e293b;color:#f8fafc}.nav-link-active{background:var(--primary);color:#fff}.nav-link-active:hover{background:var(--primary-hover);color:#fff}.sidebar-footer{border-top:1px solid #1e293b;padding-top:12px;font-size:12px;color:#cbd5e1}.sidebar-footer .user-name{font-weight:600;color:#f1f5f9}.sidebar-footer .user-office{margin-bottom:8px;color:#94a3b8}.main-column{display:flex;flex-direction:column;overflow:hidden}.main-pane{overflow-y:auto;padding:24px 32px;flex:1}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 20px;background:#fff;border-bottom:1px solid var(--border);min-height:48px}.topbar-actions{display:flex;align-items:center;gap:16px;margin-left:auto}.cover-banner{background:#fef3c7;color:#78350f;padding:6px 12px;border-radius:6px;font-size:13px}.cover-dropdown{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--fg-muted)}.cover-dropdown select{padding:6px 10px;border:1px solid var(--border);border-radius:6px;font-size:13px;background:#fff}.cover-status{font-size:12px;color:var(--fg-muted)}.cover-status.muted{color:#94a3b8}.btn-ghost-light{color:var(--primary);padding:6px 10px}.btn-ghost-light:hover:not(:disabled){color:var(--primary-hover);text-decoration:underline}.message-list{display:flex;flex-direction:column;gap:8px}.message-row{background:#fff;border:1px solid var(--border);border-radius:8px;padding:12px 16px;display:grid;grid-template-columns:1fr auto;gap:4px;cursor:pointer}.message-row:hover{border-color:var(--primary)}.message-row.unread{border-left:4px solid var(--primary);padding-left:12px}.message-row.urgent{border-left-color:var(--danger)}.message-row .sender{font-weight:600;font-size:14px}.message-row .preview{color:var(--fg-muted);font-size:13px}.message-row .timestamp{font-size:12px;color:var(--fg-muted);text-align:right}.message-row .badge{display:inline-block;font-size:11px;padding:2px 6px;border-radius:4px;margin-right:6px}.message-row .badge-urgent{background:#fee2e2;color:var(--danger)}.message-row .badge-unread{background:#dbeafe;color:var(--primary)}.empty-state{background:#fff;border:1px dashed var(--border);border-radius:8px;padding:32px;color:var(--fg-muted);text-align:center}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.page-header h1{margin:0;font-size:20px}.placeholder{background:#fff;border:1px dashed var(--border);border-radius:8px;padding:24px;color:var(--fg-muted)}.btn{border:none;border-radius:6px;padding:8px 14px;font-size:14px;font-weight:500;cursor:pointer}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-hover)}.btn-ghost{background:transparent;color:#cbd5e1;padding:4px 0;text-align:left}.btn-ghost:hover:not(:disabled){color:#f8fafc;text-decoration:underline}.login-shell{display:flex;align-items:center;justify-content:center;height:100vh;background:linear-gradient(135deg,#0f172a,#1e3a8a)}.login-card{background:#fff;border-radius:12px;padding:32px;width:360px;box-shadow:0 12px 32px #00000040;display:flex;flex-direction:column;gap:10px}.login-card h1{margin:0;font-size:20px}.login-card .login-brand{margin:-4px 0 8px;font-size:12px;color:var(--fg-muted);text-transform:uppercase;letter-spacing:.05em}.login-card label{font-size:12px;color:var(--fg-muted);margin-top:4px}.login-card input{padding:10px 12px;border:1px solid var(--border);border-radius:6px;font-size:14px}.login-card input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #2563eb26}.form-error{background:#fee2e2;color:var(--danger);padding:8px 12px;border-radius:6px;font-size:13px}.form-success{background:#dcfce7;color:#166534;padding:8px 12px;border-radius:6px;font-size:13px}.muted-small{font-size:11px;color:var(--fg-muted);margin-top:2px}.sent-pills{margin-top:6px}.sent-recipient-list{list-style:none;padding:8px 0 0;margin:8px 0 0;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:4px}.sent-recipient-list li{display:flex;justify-content:space-between;align-items:center;font-size:13px}.recipient-name{color:var(--fg)}.pill{display:inline-block;font-size:11px;font-weight:500;padding:2px 8px;border-radius:999px}.pill-pending{background:#f1f5f9;color:#475569}.pill-sent{background:#e0e7ff;color:#3730a3}.pill-delivered{background:#dbeafe;color:#1e40af}.pill-opened{background:#ddd6fe;color:#5b21b6}.pill-read{background:#dcfce7;color:#166534}.pill-failed{background:#fee2e2;color:var(--danger)}.contact-list{display:flex;flex-direction:column;gap:6px}.contact-row{background:#fff;border:1px solid var(--border);border-radius:8px;padding:10px 14px;display:flex;justify-content:space-between;align-items:center;cursor:pointer}.contact-row:hover{border-color:var(--primary)}.contact-name{font-weight:600;font-size:14px;display:flex;align-items:center;gap:8px}.contact-meta{font-size:12px;color:var(--fg-muted)}.badge{display:inline-block;font-size:10px;padding:2px 6px;border-radius:4px;font-weight:600;text-transform:uppercase;letter-spacing:.04em}.badge-desktop{background:#ede9fe;color:#5b21b6}.badge-oncall{background:#dcfce7;color:#166534}.compose-grid{display:grid;grid-template-columns:320px 1fr;gap:24px}.compose-label{display:block;font-size:12px;font-weight:600;color:var(--fg-muted);margin-bottom:6px;text-transform:uppercase;letter-spacing:.04em}.compose-search{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:6px;font-size:13px;margin-bottom:8px}.recipient-picker{list-style:none;margin:0;padding:0;max-height:480px;overflow-y:auto;border:1px solid var(--border);border-radius:8px;background:#fff}.recipient-row{display:flex;gap:10px;padding:8px 12px;border-bottom:1px solid var(--border);cursor:pointer;font-size:13px}.recipient-row:last-child{border-bottom:none}.recipient-row.checked{background:#eff6ff}.recipient-row input{margin-top:4px}.recipient-row .badge{margin-left:6px}.compose-body{display:flex;flex-direction:column}.compose-textarea{width:100%;border:1px solid var(--border);border-radius:6px;padding:10px 12px;font-size:14px;resize:vertical;font-family:inherit}.compose-textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #2563eb26}.compose-actions{margin-top:16px;display:flex;justify-content:flex-end}