:root {
    --primary: #4f46e5;
    --primary-light: #6366f1;
    --secondary: #10b981;
    --bg-body: #0a0a0c;
    --bg-card: #141417;
    --sidebar-bg: #0f0f12;
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --border: #26262b;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Inter', sans-serif; }

body { background: var(--bg-body); color: var(--text-main); display: flex; min-height: 100vh; overflow: hidden; }

/* Sidebar */
.sidebar { width: 260px; background: var(--sidebar-bg); border-right: 1px solid var(--border); display: flex; flex-direction: column; padding: 25px 0; }
.logo { padding: 0 25px; margin-bottom: 40px; font-weight: 800; font-size: 1.4rem; color: #fff; display: flex; align-items: center; gap: 10px; }
.logo span { background: var(--primary); color: #fff; padding: 3px 8px; border-radius: 6px; font-size: 0.6rem; text-transform: uppercase; }

nav { flex: 1; padding: 0 15px; }
.nav-item { padding: 14px 18px; border-radius: 12px; cursor: pointer; color: var(--text-muted); transition: all 0.2s; font-size: 0.95rem; font-weight: 500; display: flex; align-items: center; gap: 12px; margin-bottom: 5px; }
.nav-item:hover { background: rgba(255,255,255,0.03); color: #fff; }
.nav-item.active { background: var(--primary); color: #fff; box-shadow: 0 4px 15px rgba(79, 70, 229, 0.25); }

/* Main Content */
.content { flex: 1; padding: 40px; overflow-y: auto; background: linear-gradient(135deg, #0a0a0c 0%, #111115 100%); }
header { margin-bottom: 40px; display: flex; justify-content: space-between; align-items: center; }
header h1 { font-size: 1.8rem; font-weight: 700; color: #fff; letter-spacing: -0.5px; }

/* Stats Grid */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 40px; }
.stat-card { background: var(--bg-card); padding: 25px; border-radius: 20px; border: 1px solid var(--border); box-shadow: 0 4px 20px rgba(0,0,0,0.1); position: relative; overflow: hidden; }
.stat-card h3 { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 12px; }
.stat-card p { font-size: 2.2rem; font-weight: 800; color: #fff; }
.stat-card span { font-size: 0.8rem; color: var(--text-muted); margin-top: 5px; display: block; }

.card-primary { border-left: 4px solid var(--primary); }
.card-success { border-left: 4px solid var(--success); }
.card-warning { border-left: 4px solid var(--warning); }
.card-info { border-left: 4px solid #3b82f6; }

/* Tables */
.table-container { background: var(--bg-card); border-radius: 20px; border: 1px solid var(--border); overflow: hidden; margin-top: 20px; }
table { width: 100%; border-collapse: collapse; text-align: left; }
thead { background: rgba(255,255,255,0.02); }
th { padding: 18px 25px; font-size: 0.8rem; text-transform: uppercase; color: var(--text-muted); letter-spacing: 0.5px; border-bottom: 1px solid var(--border); }
td { padding: 18px 25px; border-bottom: 1px solid var(--border); font-size: 0.9rem; color: #d1d5db; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(255,255,255,0.01); }

/* Buttons */
.btn { padding: 10px 18px; border-radius: 10px; border: none; cursor: pointer; font-size: 0.9rem; font-weight: 600; transition: all 0.2s; display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.05); color: #fff; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-light); transform: translateY(-1px); }
.btn:active { transform: scale(0.98); }

/* Badges */
.status-badge { padding: 4px 10px; border-radius: 6px; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; }
.status-active { background: rgba(16, 185, 129, 0.1); color: var(--success); }
.status-warning { background: rgba(245, 158, 11, 0.1); color: var(--warning); }

/* Modals */
.modal { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.8); backdrop-filter: blur(5px); z-index: 1000; align-items: center; justify-content: center; display: none; }
.modal-content { background: var(--bg-card); width: 100%; max-width: 550px; border-radius: 24px; border: 1px solid var(--border); overflow: hidden; animation: modalIn 0.3s ease-out; }
@keyframes modalIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.modal-header { padding: 25px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.modal-header h2 { font-size: 1.2rem; }
.close { cursor: pointer; font-size: 1.5rem; opacity: 0.5; }
.close:hover { opacity: 1; }
form { padding: 25px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-size: 0.85rem; color: var(--text-muted); }
.modal-footer { padding: 20px 25px; background: rgba(0,0,0,0.2); border-top: 1px solid var(--border); text-align: right; }

.section-title { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1.5px; margin: 30px 0 15px 0; font-weight: 700; }

.model-stat-card { background: rgba(255,255,255,0.03); padding: 20px; border-radius: 16px; border: 1px solid var(--border); text-align: center; transition: all 0.2s; }
.model-stat-card:hover { transform: translateY(-3px); border-color: var(--primary); }
.model-stat-card .count { font-size: 1.8rem; font-weight: 800; color: var(--primary-light); margin-bottom: 5px; }
.model-stat-card .label { font-size: 0.8rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; }

/* Custom Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-body); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: #333; }