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

:root {
  --font-primary: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-bengali: 'Hind Siliguri', -apple-system, sans-serif;

  /* Light Theme Variables */
  --bg-color: #f8fafc;
  --bg-card: #ffffff;
  --text-color: #0f172a;
  --text-muted: #64748b;
  --primary-color: #4f46e5;
  --primary-hover: #4338ca;
  --accent-color: #0ea5e9;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.4);
  --nav-bg: rgba(255, 255, 255, 0.85);
  --card-hover-y: -8px;
  --danger-color: #ef4444;
  --success-color: #10b981;
  --warning-color: #f59e0b;
}

[data-theme="dark"] {
  /* Dark Theme Variables */
  --bg-color: #0b0f19;
  --bg-card: #141b2d;
  --text-color: #f1f5f9;
  --text-muted: #94a3b8;
  --primary-color: #6366f1;
  --primary-hover: #4f46e5;
  --accent-color: #38bdf8;
  --border-color: #1e293b;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.25), 0 2px 4px -1px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
  --glass-bg: rgba(20, 27, 45, 0.7);
  --glass-border: rgba(255, 255, 255, 0.05);
  --nav-bg: rgba(11, 15, 25, 0.85);
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s ease, color 0.3s ease;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Apply Bengali font to Bengali content tags */
.bn-text, [lang="bn"] {
  font-family: var(--font-bengali);
}

/* Glassmorphism Navigation */
.navbar-custom {
  background-color: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  position: sticky;
  top: 0;
  z-index: 1030;
  transition: background-color 0.3s ease, border-bottom 0.3s ease;
}

.navbar-brand {
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--primary-color) !important;
}

.nav-link {
  color: var(--text-color) !important;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary-color) !important;
}

/* Theme Toggle Button */
.theme-toggle-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-color);
  padding: 8px 12px;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.2s ease;
}
.theme-toggle-btn:hover {
  background-color: var(--border-color);
  transform: rotate(15deg);
}

/* Custom Cards */
.card-custom {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease, border-color 0.3s ease;
}
.card-custom:hover {
  transform: translateY(var(--card-hover-y));
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.card-custom .card-img-wrapper {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3/4;
}

.card-custom img.card-img-top {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.card-custom:hover img.card-img-top {
  transform: scale(1.05);
}

/* Badges */
.badge-custom {
  padding: 6px 12px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.badge-featured {
  background-color: rgba(99, 102, 241, 0.15);
  color: var(--primary-color);
}
.badge-bestseller {
  background-color: rgba(245, 158, 11, 0.15);
  color: var(--warning-color);
}

/* Hero Section */
.hero-section {
  padding: 80px 0;
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(14, 165, 233, 0.05) 100%);
  border-bottom: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
  z-index: 0;
}

/* Buttons */
.btn-primary {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: #fff;
  border-radius: 8px;
  padding: 10px 24px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.btn-primary:hover, .btn-primary:focus, .btn-primary:active {
  background-color: var(--primary-hover) !important;
  border-color: var(--primary-hover) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
}

.btn-outline-primary {
  color: var(--primary-color);
  border-color: var(--primary-color);
  border-radius: 8px;
  padding: 10px 24px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.btn-outline-primary:hover {
  background-color: var(--primary-color);
  color: #fff;
  transform: translateY(-1px);
}

/* Categories List */
.category-btn {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-color);
  padding: 12px 20px;
  border-radius: 50px;
  font-weight: 500;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
  display: inline-block;
  text-decoration: none;
  margin: 6px;
}

.category-btn:hover, .category-btn.active {
  background-color: var(--primary-color);
  color: #ffffff !important;
  border-color: var(--primary-color);
  transform: scale(1.03);
  box-shadow: var(--shadow-md);
}

/* eBook Details Page Components */
.ebook-detail-img {
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
}

.preview-thumbnail {
  border-radius: 8px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.2s ease;
  aspect-ratio: 3/4;
  object-fit: cover;
  width: 100%;
}
.preview-thumbnail:hover, .preview-thumbnail.active {
  border-color: var(--primary-color);
  transform: scale(1.05);
}

.specs-table td {
  padding: 12px 16px;
  border-color: var(--border-color);
}

.specs-title {
  font-weight: 600;
  color: var(--text-muted);
}

.specs-value {
  color: var(--text-color);
}

/* Checkout Page Dynamic QR */
.qr-container {
  background: #ffffff;
  padding: 20px;
  border-radius: 16px;
  border: 1px solid var(--border-color);
  display: inline-block;
}

/* User Dashboard Navigation */
.dashboard-sidebar .list-group-item {
  background-color: var(--bg-card);
  color: var(--text-color);
  border-color: var(--border-color);
  font-weight: 500;
  padding: 14px 20px;
  transition: all 0.2s ease;
}

.dashboard-sidebar .list-group-item.active {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: #fff;
}

.dashboard-sidebar .list-group-item:hover:not(.active) {
  background-color: var(--bg-color);
  color: var(--primary-color);
  padding-left: 24px;
}

/* Blog Styling */
.blog-card img {
  height: 220px;
  object-fit: cover;
}
.blog-content img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  margin: 20px 0;
}

/* Comments section styling */
.comment-item {
  border-bottom: 1px solid var(--border-color);
  padding: 16px 0;
}

/* Dark-mode custom overrides for third-party widgets */
.alert {
  border-radius: 10px;
}

/* Footer style overrides */
footer {
  margin-top: auto;
  background-color: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: 40px 0 20px 0;
}

.social-icon {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: var(--bg-color);
  color: var(--text-color);
  margin-right: 8px;
  transition: all 0.2s ease;
  text-decoration: none;
}
.social-icon:hover {
  background-color: var(--primary-color);
  color: #fff;
  transform: translateY(-2px);
}
.whatsapp-chat-btn {
  background-color: #25d366;
  color: #fff !important;
}
.whatsapp-chat-btn:hover {
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
}

/* Carousel controls hover styles */
.carousel-control-prev, .carousel-control-next {
  width: 5%;
}
.carousel-control-prev-icon, .carousel-control-next-icon {
  background-color: rgba(15, 23, 42, 0.6);
  padding: 20px;
  border-radius: 50%;
}
[data-theme="dark"] .carousel-control-prev-icon, [data-theme="dark"] .carousel-control-next-icon {
  background-color: rgba(255, 255, 255, 0.2);
}

/* Admin Panel General Styles */
.admin-card {
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
}
.admin-sidebar {
  min-height: calc(100vh - 56px);
  background-color: var(--bg-card);
  border-right: 1px solid var(--border-color);
}
.admin-sidebar .nav-link {
  padding: 12px 20px;
  font-weight: 500;
  border-radius: 8px;
  margin: 4px 8px;
}
.admin-sidebar .nav-link.active {
  background-color: rgba(99, 102, 241, 0.1);
  color: var(--primary-color) !important;
}