/**
 * Azim LMS & Affiliate Platform - Main Design System
 * Modern SaaS / EdTech Aesthetics
 */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Inter:wght@400;500;600;700&display=swap');

:root {
  --font-heading: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;

  /* Theme Colors - EdTech Light Mode Default */
  --bg-main: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #ffffff;
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;

  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  --primary: #4f46e5;
  --primary-rgb: 79, 70, 229;
  --primary-hover: #4338ca;
  --primary-light: #eef2ff;

  --secondary: #0ea5e9;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;

  --affiliate-accent: #8b5cf6;
  --affiliate-gradient: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
  --brand-gradient: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);

  --radius-sm: 0.5rem;
  --radius-md: 0.875rem;
  --radius-lg: 1.25rem;
  --radius-xl: 1.75rem;

  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.06);
  --shadow-glow: 0 0 25px rgba(79, 70, 229, 0.25);
}

/* Dark Mode Tokens */
[data-bs-theme="dark"], body.dark-mode {
  --bg-main: #0b0f19;
  --bg-surface: #111827;
  --bg-surface-elevated: #1e293b;
  --border-color: #1e293b;
  --border-light: #283548;

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-inverse: #0f172a;

  --primary-light: rgba(99, 102, 241, 0.15);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.35);
}

/* Base Elements */
body {
  font-family: var(--font-body);
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  margin: 0;
  padding: 0;
  transition: background-color 0.25s ease, color 0.25s ease;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6, .font-heading {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.025em;
}

a {
  text-decoration: none;
  color: var(--primary);
  transition: color 0.15s ease, transform 0.15s ease;
}

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

/* Glassmorphism Cards */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.card-elevated {
  background-color: var(--bg-surface-elevated);
}

/* Modern Gradient Buttons */
.btn {
  font-family: var(--font-heading);
  font-weight: 600;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--brand-gradient);
  border: none;
  color: #fff;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
  color: #fff;
  opacity: 0.95;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(79, 70, 229, 0.4);
}

.btn-affiliate {
  background: var(--affiliate-gradient);
  border: none;
  color: #fff;
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.35);
}

.btn-affiliate:hover {
  color: #fff;
  opacity: 0.95;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(139, 92, 246, 0.45);
}

.btn-outline-custom {
  border: 1px solid var(--border-color);
  color: var(--text-main);
  background: transparent;
}

.btn-outline-custom:hover {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
}

/* Course Card */
.course-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.course-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(99, 102, 241, 0.4);
}

.course-thumbnail-wrapper {
  position: relative;
  aspect-ratio: 16 / 9;
  background-color: #1e293b;
  overflow: hidden;
}

.course-thumbnail-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.course-card:hover .course-thumbnail-wrapper img {
  transform: scale(1.05);
}

.course-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  backdrop-filter: blur(8px);
  background: rgba(15, 23, 42, 0.75);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.course-commission-tag {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--affiliate-gradient);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 2rem;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.course-card-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.course-instructor {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.75rem;
}

.instructor-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
}

/* Navbars & Headers */
.public-navbar {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1020;
  transition: all 0.2s ease;
}

[data-bs-theme="dark"] .public-navbar {
  background: rgba(17, 24, 39, 0.85);
  border-bottom: 1px solid var(--border-color);
}

.navbar-brand {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-link {
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.925rem;
  padding: 0.5rem 0.85rem !important;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

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

/* Progress bars */
.custom-progress {
  height: 8px;
  border-radius: 1rem;
  background-color: var(--border-color);
  overflow: hidden;
}

.custom-progress .progress-bar {
  background: var(--brand-gradient);
  border-radius: 1rem;
  transition: width 0.6s ease;
}

/* Toast styling */
.toast-container {
  z-index: 1090;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}