:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --success: #16a34a;
    --warning: #d97706;
    --error: #dc2626;
    --bg: #f8fafc;
    --surface: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #e2e8f0;
    --radius: 8px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; }

.container { max-width: 1100px; margin: 0 auto; padding: 20px; }
header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 30px; padding-bottom: 15px; border-bottom: 2px solid var(--border); flex-wrap: wrap; gap: 10px; }
header h1 { font-size: 1.4rem; color: var(--primary); }
nav { display: flex; gap: 4px; flex-wrap: wrap; }
nav a { padding: 6px 14px; border-radius: var(--radius); text-decoration: none; color: var(--text-light); font-size: 0.9rem; transition: all 0.2s; }
nav a:hover { background: var(--border); color: var(--text); }
nav a.active { background: var(--primary); color: white; }
nav .nav-logout { color: var(--error); }
nav .nav-logout:hover { background: #fef2f2; }
main { min-height: 400px; }
footer { margin-top: 40px; padding-top: 15px; border-top: 1px solid var(--border); text-align: center; color: var(--text-light); font-size: 0.85rem; }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 30px; }
.stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; text-align: center; }
.stat-card h3 { font-size: 0.85rem; color: var(--text-light); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.5px; }
.stat-number { font-size: 2rem; font-weight: 700; color: var(--text); }
.stat-warning { color: var(--warning); }

.data-table { border-collapse: collapse; background: var(--surface); border-radius: var(--radius); overflow: hidden; }
.data-table.full-width { width: 100%; }
.data-table th, .data-table td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
.data-table th { background: #f1f5f9; font-weight: 600; color: var(--text-light); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.3px; }
.data-table tbody tr:hover { background: #f8fafc; }

.status-badge { display: inline-block; padding: 2px 10px; border-radius: 12px; font-size: 0.8rem; font-weight: 600; }
.status-completed { background: #dcfce7; color: var(--success); }
.status-running { background: #dbeafe; color: var(--primary); }
.status-failed { background: #fee2e2; color: var(--error); }

.alert { padding: 16px 20px; border-radius: var(--radius); margin-bottom: 20px; }
.alert h3 { margin-bottom: 10px; }
.alert-success { background: #f0fdf4; border: 1px solid #bbf7d0; color: #166534; }
.alert-error { background: #fef2f2; border: 1px solid #fecaca; color: #991b1b; }
.alert .data-table { background: transparent; }
.alert .data-table td { border-color: rgba(0,0,0,0.1); }
.error-text { color: var(--error); }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 500; font-size: 0.9rem; }
.form-group input[type="text"], .form-group input[type="password"] { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: var(--radius); font-size: 1rem; }
.form-group input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1); }
.form-group input[type="checkbox"] { margin-right: 8px; }

.btn { display: inline-block; padding: 10px 24px; border: none; border-radius: var(--radius); font-size: 1rem; font-weight: 500; cursor: pointer; transition: all 0.2s; }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.help-text { margin-top: 12px; color: var(--text-light); font-size: 0.85rem; }
.sync-form { background: var(--surface); padding: 24px; border: 1px solid var(--border); border-radius: var(--radius); }

.last-sync { background: var(--surface); padding: 24px; border: 1px solid var(--border); border-radius: var(--radius); }
.last-sync h2 { margin-bottom: 15px; font-size: 1.1rem; }
h2 { margin-bottom: 20px; font-size: 1.2rem; }

.login-page { display: flex; justify-content: center; align-items: center; min-height: 100vh; }
.login-container { background: var(--surface); padding: 40px; border-radius: var(--radius); border: 1px solid var(--border); width: 100%; max-width: 400px; text-align: center; }
.login-container h1 { margin-bottom: 4px; color: var(--primary); font-size: 1.4rem; }
.login-container .subtitle { color: var(--text-light); margin-bottom: 24px; }
.login-container .form-group { text-align: left; }
.login-container .btn { width: 100%; }

@media (max-width: 768px) {
    header { flex-direction: column; align-items: flex-start; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .data-table { font-size: 0.8rem; }
    .data-table th, .data-table td { padding: 8px 10px; }
}