* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #dbeafe;
    --success: #22c55e;
    --success-light: #dcfce7;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --danger: #ef4444;
    --danger-light: #fef2f2;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --sidebar-w: 250px;
    --topbar-h: 60px;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
}

body { font-family: 'Inter', sans-serif; background: var(--gray-50); color: var(--gray-800); font-size: 14px; }

.portal-layout { display: flex; min-height: 100vh; }
.portal-sidebar { width: var(--sidebar-w); background: #1a1a2e; color: #fff; display: flex; flex-direction: column; position: fixed; top: 0; left: 0; height: 100vh; z-index: 100; transition: transform 0.3s; }
.sidebar-header { padding: 16px 20px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.sidebar-logo { color: #fff; text-decoration: none; font-weight: 700; font-size: 16px; display: flex; align-items: center; gap: 10px; }
.sidebar-logo i { background: var(--primary); width: 30px; height: 30px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 13px; }
.sidebar-nav { flex: 1; padding: 12px 0; }
.nav-link { display: flex; align-items: center; gap: 12px; padding: 10px 20px; color: rgba(255,255,255,0.5); text-decoration: none; font-size: 13px; font-weight: 500; transition: all 0.2s; }
.nav-link:hover { color: #fff; background: rgba(255,255,255,0.05); }
.nav-link.active { color: #fff; background: var(--primary); }
.nav-link i { width: 18px; text-align: center; }
.sidebar-footer { padding: 12px 20px; border-top: 1px solid rgba(255,255,255,0.1); display: flex; flex-direction: column; gap: 4px; }
.sidebar-footer a { color: rgba(255,255,255,0.5); text-decoration: none; font-size: 13px; padding: 6px 0; display: flex; align-items: center; gap: 8px; }
.sidebar-footer a:hover { color: #fff; }

.portal-main { flex: 1; margin-left: var(--sidebar-w); display: flex; flex-direction: column; }
.portal-topbar { height: var(--topbar-h); background: #fff; border-bottom: 1px solid var(--gray-200); display: flex; align-items: center; padding: 0 24px; gap: 16px; position: sticky; top: 0; z-index: 50; }
.sidebar-toggle { display: none; background: none; border: none; font-size: 18px; color: var(--gray-600); cursor: pointer; }
.topbar-title { font-size: 18px; font-weight: 600; }
.topbar-right { margin-left: auto; }
.portal-user { color: var(--gray-500); font-size: 13px; }
.portal-content { padding: 24px; flex: 1; }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: #fff; border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); display: flex; align-items: center; gap: 16px; }
.stat-icon { width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 20px; }
.stat-icon.blue { background: var(--primary-light); color: var(--primary); }
.stat-icon.green { background: var(--success-light); color: var(--success); }
.stat-icon.yellow { background: var(--warning-light); color: var(--warning); }
.stat-info h3 { font-size: 24px; font-weight: 700; line-height: 1; }
.stat-info p { color: var(--gray-500); font-size: 12px; margin-top: 4px; }

.card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 24px; }
.card-header { padding: 16px 20px; border-bottom: 1px solid var(--gray-200); display: flex; align-items: center; justify-content: space-between; }
.card-header h2 { font-size: 16px; font-weight: 600; }
.card-body { padding: 20px; }

table { width: 100%; border-collapse: collapse; }
th { text-align: left; padding: 10px 12px; font-size: 12px; font-weight: 600; text-transform: uppercase; color: var(--gray-500); background: var(--gray-50); border-bottom: 1px solid var(--gray-200); }
td { padding: 10px 12px; border-bottom: 1px solid var(--gray-100); font-size: 13px; }
tr:hover td { background: var(--gray-50); }

.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border: none; border-radius: 6px; font-size: 13px; font-weight: 500; cursor: pointer; text-decoration: none; transition: all 0.2s; font-family: inherit; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); color: #fff; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-secondary { background: var(--gray-200); color: var(--gray-700); }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-lg { padding: 10px 20px; font-size: 14px; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 500; color: var(--gray-700); margin-bottom: 6px; }
.form-control { width: 100%; padding: 9px 12px; border: 1px solid var(--gray-300); border-radius: 6px; font-size: 13px; font-family: inherit; background: #fff; }
.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
textarea.form-control { min-height: 100px; resize: vertical; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.alert { padding: 12px 16px; border-radius: 6px; font-size: 13px; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
.alert-success { background: var(--success-light); color: #166534; border: 1px solid #bbf7d0; }
.alert-danger { background: var(--danger-light); color: #991b1b; border: 1px solid #fecaca; }

.badge-status { padding: 3px 10px; border-radius: 20px; font-size: 11px; font-weight: 600; text-transform: uppercase; }
.badge-active, .badge-completed { background: var(--success-light); color: #166534; }
.badge-inactive, .badge-cancelled { background: var(--danger-light); color: #991b1b; }
.badge-pending { background: var(--warning-light); color: #92400e; }
.badge-in_progress, .badge-review { background: var(--primary-light); color: var(--primary-dark); }
.badge-todo { background: var(--gray-200); color: var(--gray-600); }
.badge-done { background: var(--success-light); color: #166534; }

.empty-state { text-align: center; padding: 40px 20px; color: var(--gray-400); }
.empty-state i { font-size: 48px; margin-bottom: 12px; display: block; }

.msg-thread { max-height: 400px; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 12px; background: var(--gray-50); border-radius: var(--radius); margin-bottom: 16px; }
.msg-bubble { max-width: 80%; padding: 10px 14px; border-radius: 12px; font-size: 13px; }
.msg-admin { background: var(--primary); color: #fff; align-self: flex-start; border-bottom-left-radius: 4px; }
.msg-client { background: #fff; border: 1px solid var(--gray-200); align-self: flex-end; border-bottom-right-radius: 4px; }
.msg-time { font-size: 11px; opacity: 0.7; margin-top: 4px; }

.task-list { list-style: none; }
.task-item { display: flex; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--gray-100); }

.file-list { list-style: none; }
.file-item { display: flex; align-items: center; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--gray-100); font-size: 13px; }
.file-item i { color: var(--gray-400); }

.service-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.service-card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; transition: transform 0.2s; }
.service-card:hover { transform: translateY(-2px); }
.service-card .card-icon { width: 48px; height: 48px; border-radius: 12px; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 20px; margin-bottom: 16px; }
.service-card h3 { font-size: 16px; margin-bottom: 8px; }
.service-card p { color: var(--gray-500); font-size: 13px; margin-bottom: 16px; }

.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--gray-100); }
.login-box { background: #fff; padding: 40px; border-radius: 12px; box-shadow: 0 4px 6px rgba(0,0,0,0.07); width: 100%; max-width: 420px; }
.login-box h1 { font-size: 24px; margin-bottom: 8px; text-align: center; }
.login-box p { color: var(--gray-500); text-align: center; margin-bottom: 24px; font-size: 14px; }
.login-box .btn { width: 100%; justify-content: center; padding: 12px; }
.login-logo { text-align: center; margin-bottom: 24px; }
.login-logo i { font-size: 40px; color: var(--primary); }
.login-link { text-align: center; margin-top: 16px; font-size: 13px; color: var(--gray-500); }
.login-link a { color: var(--primary); text-decoration: none; }

.section-divider { border: none; border-top: 1px solid var(--gray-200); margin: 24px 0; }

@media (max-width: 768px) {
    .portal-sidebar { transform: translateX(-100%); }
    .portal-sidebar.open { transform: translateX(0); }
    .portal-main { margin-left: 0; }
    .sidebar-toggle { display: block; }
    .form-row { grid-template-columns: 1fr; }
    .service-grid { grid-template-columns: 1fr; }
}