/* ===================================
   Gift Card Store — Dark Theme
   =================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;600&display=swap');

:root {
  --bg-primary: #0a0a10;
  --bg-secondary: #12121c;
  --bg-card: #16162280;
  --bg-card-hover: #1c1c2a;
  --bg-input: #0e0e18;
  --border: #2a2a3e;
  --border-hover: #3d3d5c;
  --text-primary: #eaeaf0;
  --text-secondary: #8888a0;
  --text-muted: #55556e;
  --accent: #7c6cf0;
  --accent-hover: #9488f5;
  --accent-glow: rgba(124, 108, 240, 0.2);
  --success: #34d399;
  --success-bg: rgba(52, 211, 153, 0.1);
  --danger: #f87171;
  --danger-bg: rgba(248, 113, 113, 0.08);
  --warning: #fbbf24;
  --gradient: linear-gradient(135deg, #6366f1, #8b5cf6, #a78bfa);
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Space Grotesk', -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-hover); }

/* ===================================
   Background pattern
   =================================== */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 100%, rgba(139, 92, 246, 0.06) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* ===================================
   Layout
   =================================== */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ===================================
   Header / Navbar
   =================================== */
.navbar {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  background: rgba(10, 10, 16, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.nav-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: color var(--transition);
}

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

/* ===================================
   Hero
   =================================== */
.hero {
  text-align: center;
  padding: 72px 0 48px;
}

.hero-badge {
  display: inline-block;
  background: var(--accent-glow);
  border: 1px solid rgba(124, 108, 240, 0.3);
  color: var(--accent-hover);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #fff, #c8c8e0);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto;
}

/* ===================================
   Product Grid
   =================================== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
  padding-bottom: 80px;
}

/* ===================================
   Product Card
   =================================== */
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3), 0 0 0 1px rgba(124, 108, 240, 0.1);
}

.card-image {
  width: 100%;
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.card-image.spotify { background: linear-gradient(135deg, #1a1a2e, #1db954 120%); }
.card-image.netflix { background: linear-gradient(135deg, #1a1a2e, #e50914 120%); }
.card-image.playstation { background: linear-gradient(135deg, #1a1a2e, #006fcd 120%); }
.card-image.default { background: linear-gradient(135deg, #1a1a2e, #6366f1 120%); }

.card-icon {
  font-size: 56px;
  opacity: 0.9;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.3));
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-body h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}

.card-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 20px;
  flex: 1;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.price {
  font-size: 24px;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.price-currency {
  font-size: 15px;
  font-weight: 500;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 2px 12px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(124, 108, 240, 0.4);
  color: #fff;
}

.btn-secondary {
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.btn-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(248, 113, 113, 0.2);
}

.btn-danger:hover {
  background: rgba(248, 113, 113, 0.15);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-block {
  width: 100%;
  justify-content: center;
}

.stock-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stock-badge.in-stock {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(52, 211, 153, 0.2);
}

.stock-badge.out-of-stock {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(248, 113, 113, 0.2);
}

/* ===================================
   Product Detail Page
   =================================== */
.product-detail {
  max-width: 680px;
  margin: 0 auto;
  padding: 60px 0 80px;
}

.product-detail-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.product-detail-image {
  width: 100%;
  height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-detail-image .card-icon {
  font-size: 80px;
}

.product-detail-body {
  padding: 36px;
}

.product-detail-body h1 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}

.product-detail-body .description {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 28px;
}

.product-detail-body .price-block {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
}

.price-large {
  font-size: 36px;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===================================
   Purchase Form
   =================================== */
.purchase-form {
  border-top: 1px solid var(--border);
  padding-top: 28px;
}

.purchase-form h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-secondary);
}

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

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 15px;
  transition: all var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-control::placeholder {
  color: var(--text-muted);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

.form-error {
  display: none;
  color: var(--danger);
  font-size: 13px;
  margin-top: 6px;
}

.form-error.visible {
  display: block;
}

/* ===================================
   Success / Cancel pages
   =================================== */
.status-page {
  text-align: center;
  padding: 100px 0;
}

.status-icon {
  font-size: 72px;
  margin-bottom: 24px;
}

.status-page h1 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 16px;
}

.status-page p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 440px;
  margin: 0 auto 32px;
}

/* ===================================
   Admin Styles
   =================================== */
.admin-layout {
  display: flex;
  min-height: 100vh;
}

.admin-sidebar {
  width: 240px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 24px 0;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 50;
}

.admin-sidebar .logo {
  padding: 0 20px;
  margin-bottom: 32px;
}

.admin-nav {
  list-style: none;
}

.admin-nav li a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
  border-left: 3px solid transparent;
}

.admin-nav li a:hover,
.admin-nav li a.active {
  background: rgba(124, 108, 240, 0.08);
  color: var(--text-primary);
  border-left-color: var(--accent);
}

.admin-nav li a .nav-icon {
  font-size: 18px;
  width: 24px;
  text-align: center;
}

.admin-main {
  flex: 1;
  margin-left: 240px;
  padding: 32px 40px;
}

.admin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

.admin-header h1 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

/* Admin stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.stat-card .stat-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.stat-card .stat-value {
  font-size: 28px;
  font-weight: 700;
}

.stat-card .stat-value.accent {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Admin table */
.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.data-table th {
  text-align: left;
  padding: 14px 20px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.data-table td {
  padding: 14px 20px;
  font-size: 14px;
  border-bottom: 1px solid rgba(42, 42, 62, 0.5);
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tr:hover td {
  background: rgba(124, 108, 240, 0.03);
}

.table-actions {
  display: flex;
  gap: 8px;
}

.code-text {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  background: var(--bg-input);
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  letter-spacing: 0.5px;
}

.status-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-tag.fulfilled {
  background: var(--success-bg);
  color: var(--success);
}

.status-tag.out_of_stock {
  background: var(--danger-bg);
  color: var(--danger);
}

.status-tag.pending {
  background: rgba(251, 191, 36, 0.1);
  color: var(--warning);
}

.status-tag.available {
  background: var(--success-bg);
  color: var(--success);
}

.status-tag.used {
  background: var(--danger-bg);
  color: var(--danger);
}

/* Login page */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
}

.login-card h1 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
  text-align: center;
}

.login-card .subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 32px;
}

.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 20px;
}

.alert-error {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(248, 113, 113, 0.2);
}

.alert-success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(52, 211, 153, 0.2);
}

/* Sections / Cards */
.admin-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 24px;
}

.admin-card h2 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 20px;
}

/* Footer */
.footer {
  text-align: center;
  padding: 32px 0;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 13px;
  position: relative;
  z-index: 1;
}

/* 404 */
.page-404 {
  text-align: center;
  padding: 120px 0;
}

.page-404 h1 {
  font-size: 72px;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===================================
   Loading spinner
   =================================== */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  display: none;
}

.btn.loading .spinner { display: inline-block; }
.btn.loading .btn-text { display: none; }

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

/* ===================================
   Responsive
   =================================== */
@media (max-width: 768px) {
  .products-grid {
    grid-template-columns: 1fr;
  }

  .hero { padding: 48px 0 32px; }

  .admin-sidebar {
    display: none;
  }

  .admin-main {
    margin-left: 0;
    padding: 20px;
  }

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

  .data-table {
    display: block;
    overflow-x: auto;
  }
}