/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --primary-light: #818cf8;
  --secondary: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --dark: #1f2937;
  --gray: #6b7280;
  --light-gray: #f3f4f6;
  --white: #ffffff;
  --border: #e5e7eb;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--dark);
  background: var(--light-gray);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.container-sm {
  max-width: 600px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.header {
  background: var(--white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}

.nav {
  display: flex;
  gap: 24px;
  align-items: center;
}

.nav a {
  color: var(--dark);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

.nav a:hover {
  color: var(--primary);
}

.nav .cart-icon {
  position: relative;
}

.nav .cart-badge {
  position: absolute;
  top: -8px;
  right: -8px;
  background: var(--danger);
  color: var(--white);
  border-radius: 50%;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
}

/* Card */
.card {
  background: var(--white);
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}

.card-header {
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.card-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}

/* Form */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  font-size: 14px;
  color: var(--dark);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-control:disabled {
  background: var(--light-gray);
  cursor: not-allowed;
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

select.form-control {
  cursor: pointer;
}

/* Button */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
  background: #059669;
  transform: translateY(-2px);
}

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

.btn-danger:hover {
  background: #dc2626;
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
  display: block;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Alert */
.alert {
  padding: 16px 20px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 14px;
}

.alert-success {
  background: #d1fae5;
  color: #065f46;
  border: 1px solid #6ee7b7;
}

.alert-error {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fca5a5;
}

.alert-warning {
  background: #fef3c7;
  color: #92400e;
  border: 1px solid #fcd34d;
}

.alert-info {
  background: #dbeafe;
  color: #1e40af;
  border: 1px solid #93c5fd;
}

/* Grid */
.grid {
  display: grid;
  gap: 24px;
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Product Card */
.product-card {
  background: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.product-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.product-body {
  padding: 16px;
}

.product-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.product-description {
  font-size: 14px;
  color: var(--gray);
  margin-bottom: 12px;
}

.product-price {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
}

.product-stock {
  font-size: 13px;
  color: var(--gray);
  margin-bottom: 16px;
}

/* Table */
.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  border-radius: 8px;
  overflow: hidden;
}

.table thead {
  background: var(--light-gray);
}

.table th {
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 14px;
  color: var(--dark);
}

.table td {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  font-size: 14px;
}

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

/* Badge */
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.badge-success {
  background: #d1fae5;
  color: #065f46;
}

.badge-warning {
  background: #fef3c7;
  color: #92400e;
}

.badge-danger {
  background: #fee2e2;
  color: #991b1b;
}

.badge-info {
  background: #dbeafe;
  color: #1e40af;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--white);
  border-radius: 16px;
  padding: 32px;
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  margin-bottom: 20px;
}

.modal-title {
  font-size: 24px;
  font-weight: 600;
}

.modal-close {
  float: right;
  font-size: 28px;
  font-weight: 700;
  color: var(--gray);
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover {
  color: var(--dark);
}

/* Loading */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--light-gray);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Utility */
.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.mt-1 {
  margin-top: 8px;
}
.mt-2 {
  margin-top: 16px;
}
.mt-3 {
  margin-top: 24px;
}
.mt-4 {
  margin-top: 32px;
}

.mb-1 {
  margin-bottom: 8px;
}
.mb-2 {
  margin-bottom: 16px;
}
.mb-3 {
  margin-bottom: 24px;
}
.mb-4 {
  margin-bottom: 32px;
}

.p-1 {
  padding: 8px;
}
.p-2 {
  padding: 16px;
}
.p-3 {
  padding: 24px;
}
.p-4 {
  padding: 32px;
}

.d-flex {
  display: flex;
}

.justify-between {
  justify-content: space-between;
}

.align-center {
  align-items: center;
}

.gap-1 {
  gap: 8px;
}
.gap-2 {
  gap: 16px;
}
.gap-3 {
  gap: 24px;
}

/* Page */
.page {
  min-height: calc(100vh - 80px);
  padding: 40px 0;
}

/* Auth Page */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.auth-card {
  max-width: 450px;
  width: 100%;
}

.auth-header {
  text-align: center;
  margin-bottom: 32px;
}

.auth-header h1 {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.auth-header p {
  color: var(--gray);
  font-size: 14px;
}

.auth-footer {
  text-align: center;
  margin-top: 24px;
  font-size: 14px;
  color: var(--gray);
}

.auth-footer a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

.auth-footer a:hover {
  text-decoration: underline;
}

/* Dashboard Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

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

.stat-card.secondary {
  background: linear-gradient(135deg, var(--secondary) 0%, #059669 100%);
}

.stat-card.warning {
  background: linear-gradient(135deg, var(--warning) 0%, #d97706 100%);
}

.stat-card.danger {
  background: linear-gradient(135deg, var(--danger) 0%, #dc2626 100%);
}

.stat-label {
  font-size: 14px;
  opacity: 0.9;
  margin-bottom: 8px;
}

.stat-value {
  font-size: 32px;
  font-weight: 700;
}

/* QRIS Payment */
.qris-container {
  text-align: center;
  padding: 32px;
}

.qris-image {
  max-width: 300px;
  margin: 0 auto 24px;
  border: 4px solid var(--primary);
  border-radius: 12px;
  padding: 16px;
  background: var(--white);
}

.qris-image img {
  width: 100%;
  height: auto;
}

.payment-info {
  background: var(--light-gray);
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 24px;
}

.payment-amount {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.payment-timer {
  font-size: 18px;
  color: var(--danger);
  font-weight: 600;
}

/* Responsive */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    gap: 16px;
  }

  .nav {
    flex-direction: column;
    gap: 12px;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }
}