:root {
    --sidebar-width: 250px;
    --primary: #4338ca;
    --primary-light: #6366f1;
    --primary-dark: #3730a3;
    --accent: #a78bfa;
    --bg: #f3f4f6;
    --card-bg: #ffffff;
    --text: #1f2937;
    --text-muted: #6b7280;
    --border: #e5e7eb;
    --sidebar-bg: #1e1b4b;
    --sidebar-hover: #2e2a5e;
    --sidebar-active: #312e81;
    --radius: 12px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.05), 0 4px 6px -2px rgba(0,0,0,0.03);
}
* { margin:0; padding:0; box-sizing:border-box; }
body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    display: flex;
    min-height: 100vh;
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
#loginScreen {
    position: fixed; inset: 0; background: radial-gradient(circle at 30% 50%, #4338ca, #1e1b4b);
    display: flex; align-items: center; justify-content: center; z-index: 999;
}
.login-box {
    background: var(--card-bg); border-radius: 20px; padding: 48px 40px; text-align: center;
    box-shadow: 0 25px 50px rgba(0,0,0,0.25); width: 400px; max-width: 95%;
}
.login-box h2 { margin-bottom: 8px; color: var(--primary); font-weight: 800; font-size: 28px; }
.login-box .subtitle { color: var(--text-muted); font-size: 14px; margin-bottom: 32px; }
.login-box select, .login-box input {
    width: 100%; padding: 12px 16px; border: 1px solid var(--border); border-radius: 10px;
    margin-bottom: 12px; font-size: 14px; background: #f9fafb;
}
.login-btn {
    width: 100%; padding: 14px; background: var(--primary); color: #fff; border: none;
    border-radius: 10px; font-weight: 700; font-size: 16px; cursor: pointer; margin-top: 8px;
}
.login-btn:hover { background: var(--primary-light); }
.login-error { color: #dc2626; font-size: 13px; margin-top: 8px; min-height: 20px; }
.sidebar {
    width: var(--sidebar-width); height: 100vh; background: var(--sidebar-bg);
    position: fixed; left: 0; top: 0; z-index: 100; display: flex; flex-direction: column; color: #fff;
}
.sidebar-logo { padding: 28px 24px; font-size: 20px; font-weight: 700; display: flex; align-items: center; gap: 12px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.sidebar-nav { flex: 1; padding: 16px 12px; overflow-y: auto; }
.nav-section { font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px; color: rgba(255,255,255,0.35); margin: 16px 12px 8px; font-weight: 600; }
.nav-link {
    display: flex; align-items: center; gap: 12px; padding: 11px 16px; border-radius: 10px;
    color: rgba(255,255,255,0.7); cursor: pointer; font-size: 14px; margin: 2px 0; transition: all 0.2s;
}
.nav-link:hover { background: var(--sidebar-hover); color: #fff; }
.nav-link.active { background: var(--primary); color: #fff; font-weight: 600; }
.sidebar-footer { padding: 16px; border-top: 1px solid rgba(255,255,255,0.08); }
.sidebar-footer button {
    width: 100%; padding: 10px; background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.15);
    color: #fff; border-radius: 10px; cursor: pointer; font-weight: 600;
}
.sidebar-footer button:hover { background: rgba(255,255,255,0.15); }
.main-content { margin-left: var(--sidebar-width); flex: 1; padding: 32px 40px; min-height: 100vh; }
.card {
    background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow);
    padding: 24px; margin-bottom: 24px; border: 1px solid var(--border);
}
.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 20px; margin-bottom: 32px; }
.stat-card {
    background: var(--card-bg); border-radius: var(--radius); padding: 24px;
    box-shadow: var(--shadow); border: 1px solid var(--border); display: flex; align-items: center; gap: 20px;
    transition: box-shadow 0.2s, transform 0.2s;
}
.stat-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.stat-card .stat-icon {
    width: 56px; height: 56px; border-radius: 14px; background: var(--primary);
    color: #fff; display: flex; align-items: center; justify-content: center; font-size: 28px; flex-shrink: 0;
}
.stat-card .stat-info { flex: 1; }
.stat-card .stat-value { font-size: 32px; font-weight: 800; color: var(--text); line-height: 1.2; }
.stat-card .stat-label { font-size: 13px; color: var(--text-muted); font-weight: 500; text-transform: uppercase; letter-spacing: 0.5px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { background: #f9fafb; padding: 14px 16px; text-align: left; font-weight: 600; font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-muted); border-bottom: 1px solid var(--border); }
td { padding: 12px 16px; border-bottom: 1px solid var(--border); color: var(--text); font-size: 14px; }
tr:hover td { background: #f9fafb; }
.badge { padding: 4px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; display: inline-block; }
.badge-success { background: #d1fae5; color: #065f46; }
.badge-warning { background: #fef3c7; color: #92400e; }
.btn {
    padding: 10px 18px; border-radius: 10px; border: none; font-weight: 600; cursor: pointer; font-size: 14px;
    background: var(--primary); color: #fff; display: inline-flex; align-items: center; gap: 8px;
    transition: background 0.2s, box-shadow 0.2s; white-space: nowrap;
}
.btn:hover { background: var(--primary-light); box-shadow: 0 4px 12px rgba(67,56,202,0.3); }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { background: #f9fafb; border-color: var(--primary); color: var(--primary); box-shadow: none; }
.btn-danger { background: #ef4444; }
.btn-danger:hover { background: #dc2626; }
.btn-success { background: #10b981; }
.btn-success:hover { background: #059669; }
.btn-sm { padding: 6px 14px; font-size: 13px; border-radius: 8px; }
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.4); backdrop-filter: blur(4px); z-index: 199; }
.modal {
    position: fixed; top: 50%; left: 50%; transform: translate(-50%,-50%); background: var(--card-bg);
    padding: 32px; border-radius: 16px; box-shadow: 0 25px 50px rgba(0,0,0,0.15); z-index: 200;
    width: 90%; max-width: 850px; max-height: 85vh; overflow-y: auto;
}
.modal h3 { font-size: 20px; font-weight: 700; margin-bottom: 20px; color: var(--text); }
input, select, textarea {
    width: 100%; padding: 10px 14px; border: 1px solid var(--border); border-radius: 8px;
    margin: 8px 0 16px; font-family: inherit; font-size: 14px; background: #f9fafb;
    transition: border-color 0.2s, box-shadow 0.2s;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(67,56,202,0.15); }
.checkbox-group { max-height: 220px; overflow-y: auto; border: 1px solid var(--border); border-radius: 8px; padding: 12px; margin: 12px 0; background: #f9fafb; }
.toast {
    position: fixed; top: 20px; right: 20px; padding: 14px 24px; border-radius: 10px; color: #fff;
    font-weight: 600; z-index: 300; animation: slideIn 0.3s ease; box-shadow: 0 10px 15px rgba(0,0,0,0.1);
}
.toast-success { background: #10b981; }
.toast-error { background: #ef4444; }
@keyframes slideIn { from { transform: translateX(100px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@media print { .sidebar,.btn,.modal-overlay,.no-print { display:none!important; } .main-content { margin-left:0!important; } }