/* Modern Color Palette */
:root {
  --primary: #667eea;
  --primary-dark: #764ba2;
  --secondary: #f093fb;
  --success: #27ae60;
  --danger: #e74c3c;
  --warning: #f39c12;
  --light: #f5f7fa;
  --border: #e0e0e0;
  --text-dark: #333;
  --text-light: #999;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text-dark);
  background: var(--light);
  margin: 0;
  padding: 0;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* === Admin Area Styles === */

.admin-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
  background: var(--light);
}

.admin-sidebar {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  padding: 30px 20px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.admin-sidebar-brand {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 40px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.admin-nav { display: flex; flex-direction: column; gap: 8px; }
.admin-nav a {
  display: block;
  padding: 12px 16px;
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.85);
  transition: var(--transition);
}

.admin-nav a:hover, .admin-nav a.active {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  text-decoration: none;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 30px;
  background: white;
  border-bottom: 1px solid var(--border);
}

.admin-header h1 { margin: 0; font-size: 1.5rem; }

.admin-main { padding: 30px; overflow-y: auto; }

.admin-card {
  background: white;
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.admin-card:hover { box-shadow: var(--shadow-md); }

.admin-card h2 { margin-top: 0; margin-bottom: 16px; font-size: 1.3rem; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.stat-item {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  padding: 24px;
  border-radius: 12px;
  text-align: center;
}

.stat-value { font-size: 2.5rem; font-weight: 700; margin-bottom: 8px; }
.stat-label { font-size: 0.95rem; opacity: 0.9; }

.table-wrapper {
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  background: white;
}

.admin-table thead {
  background: var(--light);
  border-bottom: 2px solid var(--border);
}

.admin-table th {
  padding: 14px;
  text-align: left;
  font-weight: 600;
  color: var(--text-dark);
}

.admin-table td {
  padding: 14px;
  border-bottom: 1px solid var(--border);
}

.admin-table tbody tr:hover { background: var(--light); }

.badge-status {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
}

.badge-paid { background: #d4edda; color: #155724; }
.badge-in_review { background: #fff3cd; color: #856404; }
.badge-reserved { background: #cce5ff; color: #004085; }
.badge-pending { background: #fff3cd; color: #856404; }
.badge-cancelled { background: #f8d7da; color: #721c24; }

.btn-admin {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 6px;
  border: none;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
}

.btn-admin:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
  text-decoration: none;
  color: white;
}

.btn-admin-secondary {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  background: white;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-admin-secondary:hover {
  background: var(--light);
  text-decoration: none;
  color: var(--primary);
}

.btn-admin-danger {
  background: var(--danger);
  color: white;
}

.btn-admin-danger:hover {
  background: #c0392b;
  text-decoration: none;
  color: white;
}

.form-admin {
  display: grid;
  gap: 20px;
}

.admin-filter-form {
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(240px, 1fr) minmax(180px, 260px) auto;
  align-items: end;
}

.form-group { display: flex; flex-direction: column; }
.form-group label { font-weight: 600; margin-bottom: 8px; color: var(--text-dark); }
.form-group input, .form-group textarea { padding: 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 1rem; transition: var(--transition); }
.form-group input:focus, .form-group textarea:focus { border-color: var(--primary); outline: none; box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1); }

.alert-box {
  padding: 16px;
  border-radius: 8px;
  margin-bottom: 20px;
}

.alert-success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.alert-error { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }
.alert-warning { background: #fff3cd; color: #856404; border: 1px solid #ffeaa7; }

/* === Login Page === */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-card {
  background: white;
  border-radius: 12px;
  padding: 40px;
  max-width: 400px;
  width: 100%;
  box-shadow: var(--shadow-lg);
}

.login-card h1 { font-size: 1.8rem; margin-bottom: 30px; text-align: center; margin-top: 0; }

.login-form { display: flex; flex-direction: column; gap: 16px; }
.login-form input { padding: 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 1rem; }
.login-form input:focus { border-color: var(--primary); outline: none; }
.login-form button { padding: 12px; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; border: none; border-radius: 8px; font-weight: 600; cursor: pointer; transition: var(--transition); }
.login-form button:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3); }

/* === Responsive === */
@media (max-width: 768px) {
  .admin-layout { display: block; min-height: 100vh; }
  .admin-sidebar { position: relative; height: auto; padding: 16px; }
  .admin-sidebar-brand { margin-bottom: 16px; font-size: 1.05rem; }
  .admin-nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .admin-nav a { padding: 10px 12px; font-size: 0.9rem; text-align: center; }
  .admin-header { align-items: flex-start; flex-direction: column; gap: 8px; padding: 16px; }
  .admin-header h1 { font-size: 1.25rem; }
  .stats-grid { grid-template-columns: 1fr; }
  .admin-main { padding: 15px; }
  .admin-card { padding: 16px; border-radius: 10px; }
  .admin-filter-form { grid-template-columns: 1fr; }
  .admin-filter-form > div:last-child { align-items: stretch !important; flex-direction: column; }
  .admin-filter-form .btn-admin,
  .admin-filter-form .btn-admin-secondary { width: 100%; text-align: center; }
  .table-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .admin-table { min-width: 980px; }
  .admin-table th,
  .admin-table td { padding: 10px; white-space: nowrap; }
  .admin-table td form { flex-wrap: wrap; }
  .login-card { padding: 30px; max-width: 90%; }
}

@media (max-width: 480px) {
  .admin-nav { grid-template-columns: 1fr; }
  .admin-main { padding: 12px; }
  .admin-card { padding: 14px; }
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.2; }
p { line-height: 1.6; }

.price-total small {
	display: block;
	font-size: 0.9rem;
	color: var(--text-soft);
}

.size-table {
	border-radius: 16px;
	overflow: hidden;
}

.size-table thead th {
	color: #fff;
	font-size: 0.82rem;
	text-transform: uppercase;
	letter-spacing: 0.08em;
}

.size-table tbody td,
.size-table thead th {
	padding: 0.9rem 1rem;
}

.size-table tbody tr {
	border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.summary-line {
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding: 12px 0;
	border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.summary-line:last-child {
	border-bottom: 0;
}

.btn-primary {
	background: linear-gradient(135deg, var(--accent), var(--accent-2));
	border: 0;
	box-shadow: 0 16px 36px rgba(90, 141, 238, 0.28);
}

.btn-primary:hover,
.btn-primary:focus {
	background: linear-gradient(135deg, #6f9cff, #9a76ff);
	box-shadow: 0 18px 42px rgba(90, 141, 238, 0.34);
}

.btn-outline-light {
	border-color: rgba(255, 255, 255, 0.2);
}

.table-dark {
	--bs-table-bg: rgba(255, 255, 255, 0.03);
	--bs-table-color: #fff;
	--bs-table-border-color: rgba(255, 255, 255, 0.07);
}

.text-white-50 {
	color: var(--text-soft) !important;
}

@media (max-width: 991px) {
	.summary-grid,
	.mini-grid {
		grid-template-columns: 1fr;
	}

	.price-strip {
		flex-direction: column;
		align-items: flex-start;
	}
}

@media (max-width: 575px) {
	.glass-card {
		border-radius: 22px;
	}

	.stat-pill {
		width: 100%;
	}
}