* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', sans-serif; background: #f1f5f9; color: #1e293b; }
a { text-decoration: none; }
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: linear-gradient(135deg, #0f172a, #1e293b); }
.login-box { background: #fff; border-radius: 16px; padding: 40px; width: 400px; box-shadow: 0 20px 60px rgba(0,0,0,.3); }
.login-box h1 { font-size: 28px; margin-bottom: 4px; color: #2563eb; }
.login-box p { color: #64748b; font-size: 14px; margin-bottom: 24px; }
.login-box input { width: 100%; padding: 12px 16px; border: 1px solid #e2e8f0; border-radius: 8px; font-size: 14px; margin-bottom: 16px; outline: none; }
.login-box input:focus { border-color: #2563eb; box-shadow: 0 0 0 3px rgba(37,99,235,.1); }
.login-box button { width: 100%; padding: 12px; background: #2563eb; color: #fff; border: none; border-radius: 8px; font-size: 15px; font-weight: 600; cursor: pointer; }
.login-box button:hover { background: #1d4ed8; }
.login-box .error { color: #dc2626; font-size: 13px; margin-bottom: 12px; }
.admin-layout { display: flex; min-height: 100vh; }
.sidebar { width: 240px; background: #0f172a; color: #fff; position: fixed; top: 0; left: 0; bottom: 0; overflow-y: auto; z-index: 100; }
.sidebar .logo { padding: 20px 20px 12px; font-size: 20px; font-weight: 800; color: #2563eb; display: block; border-bottom: 1px solid rgba(255,255,255,.06); margin-bottom: 8px; }
.sidebar .logo span { color: #fff; }
.sidebar .nav-item { display: flex; align-items: center; gap: 10px; padding: 10px 20px; color: #94a3b8; font-size: 13px; transition: all .2s; }
.sidebar .nav-item:hover { background: rgba(255,255,255,.06); color: #fff; }
.sidebar .nav-item.active { background: rgba(37,99,235,.15); color: #2563eb; border-right: 3px solid #2563eb; }
.sidebar .section-label { padding: 16px 20px 6px; font-size: 10px; text-transform: uppercase; letter-spacing: 1px; color: #475569; }
.main-content { margin-left: 240px; flex: 1; padding: 24px 32px; }
.topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.topbar h2 { font-size: 24px; font-weight: 700; }
.topbar .user-info { display: flex; align-items: center; gap: 12px; }
.topbar .user-info span { font-size: 13px; color: #64748b; }
.topbar .logout { padding: 8px 16px; border: 1px solid #e2e8f0; border-radius: 6px; font-size: 13px; color: #64748b; }
.topbar .logout:hover { background: #fee2e2; border-color: #fca5a5; color: #dc2626; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 32px; }
.stat-card { background: #fff; border-radius: 12px; padding: 20px; border: 1px solid #e2e8f0; }
.stat-card .label { font-size: 12px; color: #64748b; margin-bottom: 4px; }
.stat-card .value { font-size: 28px; font-weight: 700; }
.stat-card .sub { font-size: 12px; color: #22c55e; margin-top: 4px; }
.card { background: #fff; border-radius: 12px; border: 1px solid #e2e8f0; overflow: hidden; margin-bottom: 24px; }
.card-header { padding: 16px 20px; border-bottom: 1px solid #e2e8f0; display: flex; justify-content: space-between; align-items: center; }
.card-header h3 { font-size: 16px; font-weight: 600; }
.card-body { padding: 20px; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; padding: 10px 12px; color: #64748b; font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .5px; border-bottom: 2px solid #e2e8f0; }
td { padding: 10px 12px; border-bottom: 1px solid #f1f5f9; }
tr:hover td { background: #f8fafc; }
.badge { display: inline-block; padding: 2px 10px; border-radius: 12px; font-size: 11px; font-weight: 600; }
.badge-green { background: #dcfce7; color: #16a34a; }
.badge-blue { background: #dbeafe; color: #2563eb; }
.badge-yellow { background: #fef3c7; color: #d97706; }
.badge-red { background: #fee2e2; color: #dc2626; }
.btn-sm { padding: 6px 12px; border-radius: 6px; font-size: 12px; font-weight: 500; border: 1px solid #e2e8f0; background: #fff; cursor: pointer; color: #475569; }
.btn-sm:hover { background: #f1f5f9; }
.btn-primary { padding: 8px 16px; background: #2563eb; color: #fff; border: none; border-radius: 6px; font-size: 13px; font-weight: 600; cursor: pointer; }
.btn-primary:hover { background: #1d4ed8; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 4px; color: #475569; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 10px 12px; border: 1px solid #e2e8f0; border-radius: 6px; font-size: 13px; outline: none; font-family: inherit; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: #2563eb; box-shadow: 0 0 0 3px rgba(37,99,235,.1); }
form { max-width: 800px; }
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 13px; }
.alert-success { background: #dcfce7; color: #16a34a; border: 1px solid #bbf7d0; }
.alert-error { background: #fee2e2; color: #dc2626; border: 1px solid #fecaca; }
.empty { text-align: center; padding: 40px; color: #94a3b8; font-size: 14px; }