:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --page-width: 1200px;
  
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --transition: 0.2s cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 12px 30px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.05);

  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --bg-surface: #f1f5f9;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --border-hover: #cbd5e1;

  --color-primary: #0041ff;
  --color-primary-hover: #0036d6;
  --color-sale: #dc2626;
  --color-success: #16a34a;
  --color-star: #fbbf24;
}

[data-theme="dark"] {
  --bg-main: #09090b;
  --bg-card: #141417;
  --bg-surface: #1f1f23;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border-color: #27272a;
  --border-hover: #3f3f46;

  --color-primary: #3b82f6;
  --color-primary-hover: #60a5fa;
  --color-sale: #ef4444;
  --color-success: #22c55e;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color var(--transition), color var(--transition);
}

.container {
  width: 100%;
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Top Announcement Bar */
.announcement-bar {
  background: #0f172a;
  color: #94a3b8;
  font-size: 0.8125rem;
  padding: 0.5rem 0;
  text-align: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.announcement-bar strong {
  color: #38bdf8;
}

/* Header */
.site-header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  transition: background var(--transition), border-color var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: var(--space-md);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-main);
}

.brand-badge {
  background: var(--color-primary);
  color: #ffffff;
  font-size: 0.6875rem;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.search-box {
  flex: 1;
  max-width: 460px;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 0.6rem 1rem 0.6rem 2.5rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-main);
  font-size: 0.875rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 65, 255, 0.15);
}

.search-icon {
  position: absolute;
  left: 0.875rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  width: 16px;
  height: 16px;
  pointer-events: none;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.theme-toggle {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: background var(--transition);
}

.theme-toggle:hover {
  background: var(--border-hover);
}

/* Hero Section */
.hero-section {
  padding: var(--space-xl) 0;
}

.hero-card {
  background: linear-gradient(135deg, #090d16 0%, #1e293b 50%, #0f172a 100%);
  border-radius: var(--radius-lg);
  color: #ffffff;
  padding: var(--space-2xl) var(--space-xl);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(12px);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  width: fit-content;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.hero-dot {
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  box-shadow: 0 0 8px #22c55e;
}

.hero-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  max-width: 680px;
}

.hero-subtitle {
  font-size: clamp(0.95rem, 2vw, 1.125rem);
  color: #94a3b8;
  max-width: 580px;
}

.hero-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-xs);
}

.hero-feature-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.875rem;
  color: #e2e8f0;
}

/* Category Filter Bar */
.category-nav-wrapper {
  margin: var(--space-md) 0 var(--space-xl);
  overflow-x: auto;
  padding-bottom: var(--space-xs);
  scrollbar-width: thin;
}

.category-nav {
  display: flex;
  gap: var(--space-sm);
  white-space: nowrap;
}

.cat-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.6rem 1.15rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.cat-btn:hover {
  border-color: var(--border-hover);
  color: var(--text-main);
}

.cat-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(0, 65, 255, 0.25);
}

/* Product Section */
.products-section {
  padding-bottom: var(--space-2xl);
  flex: 1;
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.product-count {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

/* Product Card */
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
}

.product-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-hover);
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-sm);
}

.card-cat {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-primary);
  letter-spacing: 0.03em;
}

.stock-tag {
  font-size: 0.6875rem;
  font-weight: 600;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  background: #dcfce7;
  color: #15803d;
}

.stock-tag.out {
  background: #fee2e2;
  color: #b91c1c;
}

.product-name {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
  line-height: 1.35;
}

.product-desc {
  font-size: 0.845rem;
  color: var(--text-muted);
  line-height: 1.45;
  margin-bottom: var(--space-md);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.variant-picker-wrap {
  margin-bottom: var(--space-md);
}

.variant-picker-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
  display: block;
}

.variant-select {
  width: 100%;
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-main);
  font-size: 0.8125rem;
  cursor: pointer;
  outline: none;
}

.variant-select:focus {
  border-color: var(--color-primary);
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  border-top: 1px solid var(--border-color);
  margin-top: auto;
}

.price-box {
  display: flex;
  flex-direction: column;
}

.price-main {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
}

.price-label {
  font-size: 0.6875rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.btn-buy {
  background: var(--color-primary);
  color: #ffffff;
  border: none;
  padding: 0.6rem 1.15rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}

.btn-buy:hover {
  background: var(--color-primary-hover);
  transform: scale(1.02);
}

/* Modal Checkout */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(6px);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 520px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  transform: translateY(20px) scale(0.97);
  transition: transform var(--transition);
}

.modal-overlay.active .modal-content {
  transform: translateY(0) scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border-color);
}

.modal-title {
  font-size: 1.125rem;
  font-weight: 700;
}

.btn-close {
  background: transparent;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-muted);
  padding: 0.25rem;
  line-height: 1;
}

.btn-close:hover {
  color: var(--text-main);
}

.modal-body {
  padding: var(--space-lg);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-main);
}

.form-input {
  padding: 0.65rem 0.875rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  color: var(--text-main);
  font-size: 0.875rem;
  outline: none;
}

.form-input:focus {
  border-color: var(--color-primary);
}

.form-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.order-summary-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: var(--space-md);
  font-size: 0.845rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.order-summary-row {
  display: flex;
  justify-content: space-between;
}

.order-summary-row.total {
  border-top: 1px dashed var(--border-color);
  padding-top: 0.4rem;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-primary);
}

.btn-submit-order {
  background: var(--color-primary);
  color: #ffffff;
  border: none;
  padding: 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-submit-order:hover {
  background: var(--color-primary-hover);
}

.btn-submit-order:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* QRIS Payment Screen */
.qris-view {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.qris-image-container {
  background: #ffffff;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  border: 2px dashed var(--border-color);
  display: inline-block;
}

.qris-image {
  width: 240px;
  height: 240px;
  object-fit: contain;
}

.qris-amount-badge {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
}

.timer-tag {
  font-size: 0.8125rem;
  color: var(--color-sale);
  font-weight: 600;
}

.polling-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border-color);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Success Fulfillment View */
.success-view {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.success-badge {
  background: #dcfce7;
  color: #15803d;
  font-weight: 700;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  display: inline-block;
  margin: 0 auto;
  font-size: 0.875rem;
}

.credential-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: var(--space-md);
  text-align: left;
  font-family: monospace;
  font-size: 0.875rem;
  white-space: pre-wrap;
  word-break: break-all;
  user-select: all;
}

/* Footer */
.site-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: var(--space-xl) 0;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: auto;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
}

@media (max-width: 640px) {
  .header-inner {
    flex-direction: column;
    height: auto;
    padding: var(--space-sm) 0;
  }
  .search-box {
    max-width: 100%;
  }
  .products-grid {
    grid-template-columns: 1fr;
  }
  .modal-content {
    max-height: 95vh;
  }
}