:root {
    --bg-main: #0f172a;
    --bg-card: #1e293b;
    --bg-hover: #334155;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --accent: #f59e0b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: #334155;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Inter', sans-serif; background-color: var(--bg-main); color: var(--text-main); line-height: 1.5; }

.app-layout { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar { width: 260px; background-color: #0b1120; border-right: 1px solid var(--border); display: flex; flex-direction: column; }
.brand { display: flex; align-items: center; gap: 12px; padding: 24px; border-bottom: 1px solid var(--border); }
.brand-logo { width: 40px; height: 40px; background: linear-gradient(135deg, #3b82f6, #8b5cf6); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 800; }
.brand-info h2 { font-size: 18px; font-weight: 700; }
.badge { background: #1e293b; color: var(--primary); padding: 2px 8px; border-radius: 4px; font-size: 11px; font-weight: 600; text-transform: uppercase; }
.badge-pill { background: var(--accent); color: #000; padding: 2px 8px; border-radius: 12px; font-size: 11px; font-weight: 700; margin-left: auto; }

.nav-menu { padding: 16px; display: flex; flex-direction: column; gap: 4px; flex: 1; }
.nav-item { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-radius: 8px; color: var(--text-muted); text-decoration: none; font-size: 14px; font-weight: 500; transition: all 0.15s; }
.nav-item:hover, .nav-item.active { background-color: var(--bg-card); color: var(--text-main); }
.nav-item.active { border-left: 3px solid var(--primary); }

.sidebar-footer { padding: 16px; border-top: 1px solid var(--border); }
.tenant-tag small { color: var(--text-muted); display: block; font-size: 11px; }
.tenant-tag strong { font-size: 13px; }
.api-key-chip { background: #1e293b; padding: 6px 10px; border-radius: 6px; margin-top: 8px; cursor: pointer; border: 1px dashed var(--border); }
.api-key-chip code { font-size: 11px; color: var(--primary); }

/* Main Content */
.main-content { flex: 1; padding: 32px 40px; overflow-y: auto; }
.top-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.top-header h1 { font-size: 26px; font-weight: 800; }
.subtitle { color: var(--text-muted); font-size: 14px; margin-top: 4px; }
.header-actions { display: flex; gap: 12px; }

/* Buttons */
.btn { padding: 10px 18px; border-radius: 8px; font-weight: 600; font-size: 14px; cursor: pointer; border: none; transition: all 0.15s; }
.btn-primary { background-color: var(--primary); color: #fff; }
.btn-primary:hover { background-color: var(--primary-hover); }
.btn-secondary { background-color: var(--bg-card); color: var(--text-main); border: 1px solid var(--border); }
.btn-secondary:hover { background-color: var(--bg-hover); }
.btn-lg { padding: 14px 24px; font-size: 15px; }

/* Tabs */
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* Alerts */
.alert-box { display: flex; gap: 16px; padding: 16px 20px; border-radius: 8px; margin-bottom: 24px; align-items: center; }
.alert-warning { background-color: rgba(245, 158, 11, 0.1); border: 1px solid var(--warning); color: #fde68a; }
.alert-icon { font-size: 24px; }

/* Metrics */
.metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 28px; }
.metric-card { background-color: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.metric-label { color: var(--text-muted); font-size: 13px; font-weight: 500; }
.metric-card h3 { font-size: 28px; font-weight: 800; margin: 8px 0; }
.trend { font-size: 12px; font-weight: 600; }
.trend.positive { color: var(--success); }
.trend.neutral { color: var(--text-muted); }

/* Cards & Tables */
.card { background-color: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; margin-bottom: 28px; }
.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.data-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 13px; }
.data-table th { color: var(--text-muted); font-weight: 600; padding: 12px 16px; border-bottom: 1px solid var(--border); }
.data-table td { padding: 14px 16px; border-bottom: 1px solid var(--border); }
.data-table tr:hover { background-color: rgba(255, 255, 255, 0.02); }

.tag-badge { display: inline-block; padding: 4px 8px; border-radius: 6px; font-size: 11px; font-weight: 700; }
.tag-approved { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.tag-rejected { background: rgba(239, 68, 68, 0.15); color: var(--danger); }
.tag-leading { background: rgba(59, 130, 246, 0.2); color: var(--primary); }

/* Forms */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--text-main); }
.form-group input, .form-group textarea, .form-group select { width: 100%; background: #0f172a; border: 1px solid var(--border); color: #fff; padding: 12px 14px; border-radius: 8px; font-family: inherit; font-size: 14px; }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); }

/* Anomaly Box */
.proposal-box { background: #0f172a; border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: 8px; padding: 20px; margin-bottom: 16px; }
.proposal-header { display: flex; justify-content: space-between; align-items: flex-start; }
.proposal-trace { background: #1e293b; padding: 12px; border-radius: 6px; font-size: 12px; margin-top: 12px; font-family: monospace; white-space: pre-wrap; color: #cbd5e1; }

.stripe-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 16px; }
.stripe-box { background: #0f172a; padding: 20px; border-radius: 8px; border: 1px solid var(--border); }

.code-block { background: #0b1120; border: 1px solid var(--border); padding: 16px; border-radius: 8px; font-family: monospace; font-size: 13px; overflow-x: auto; color: #38bdf8; }