* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Inter', sans-serif; background: #f3f4f6; color: #333; display: flex; height: 100vh; overflow: hidden; }

/* Sidebar */
.admin-sidebar { width: 250px; background: #1f2937; color: #fff; display: flex; flex-direction: column; }
.admin-sidebar h2 { padding: 1.5rem; background: #111827; font-size: 1.2rem; text-align: center; border-bottom: 1px solid #374151; }
.admin-sidebar ul { list-style: none; flex: 1; padding: 1rem 0; }
.admin-sidebar ul li a { display: block; padding: 1rem 1.5rem; color: #d1d5db; text-decoration: none; transition: 0.3s; }
.admin-sidebar ul li a:hover { background: #374151; color: #fff; }
.admin-sidebar ul li a i { width: 25px; }

/* Main Content */
.admin-main { flex: 1; overflow-y: auto; padding: 2rem; }
.admin-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 2rem; border-bottom: 1px solid #e5e7eb; padding-bottom: 1rem; }
.admin-header h1 { font-size: 1.8rem; color: #111827; }

/* Forms & Cards */
.admin-card { background: #fff; border-radius: 8px; padding: 1.5rem; box-shadow: 0 1px 3px rgba(0,0,0,0.1); margin-bottom: 2rem; }
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-weight: 600; margin-bottom: 0.5rem; color: #4b5563; }
.form-control { width: 100%; padding: 0.75rem; border: 1px solid #d1d5db; border-radius: 4px; font-family: inherit; font-size: 1rem; }
.form-control:focus { outline: none; border-color: #2563eb; }

/* Buttons */
.btn { display: inline-block; padding: 0.75rem 1.5rem; border: none; border-radius: 4px; font-weight: 600; cursor: pointer; text-decoration: none; color: #fff; text-align: center; }
.btn-primary { background: #2563eb; }
.btn-primary:hover { background: #1d4ed8; }
.btn-danger { background: #ef4444; }
.btn-danger:hover { background: #dc2626; }

/* Tables */
.admin-table { width: 100%; border-collapse: collapse; margin-top: 1rem; }
.admin-table th, .admin-table td { padding: 1rem; text-align: left; border-bottom: 1px solid #e5e7eb; }
.admin-table th { background: #f9fafb; font-weight: 600; color: #4b5563; }

/* Alerts */
.alert { padding: 1rem; border-radius: 4px; margin-bottom: 1rem; }
.alert-success { background: #d1fae5; color: #065f46; }
.alert-danger { background: #fee2e2; color: #991b1b; }

/* Login Page specific */
.login-page { justify-content: center; align-items: center; background: #1f2937; }
.login-box { background: #fff; padding: 2.5rem; border-radius: 8px; width: 100%; max-width: 400px; box-shadow: 0 4px 6px rgba(0,0,0,0.1); }
.login-box h1 { text-align: center; margin-bottom: 1.5rem; color: #111827; }