/* Modern Glassmorphic Design System - Learning & Skill Development Course */
@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@300;400;600;700;800;900&display=swap');

:root {
  --bg-primary: #070a13;
  --bg-secondary: #0f172a;
  --bg-card: rgba(15, 23, 42, 0.72);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(168, 85, 247, 0.3);
  
  --accent-purple: #a855f7;
  --accent-indigo: #6366f1;
  --accent-blue: #3b82f6;
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --glow-purple: 0 0 25px rgba(168, 85, 247, 0.25);
  --glow-emerald: 0 0 25px rgba(16, 185, 129, 0.25);
  --glow-amber: 0 0 25px rgba(245, 158, 11, 0.25);
  
  --font-main: 'Cairo', sans-serif;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: var(--font-main);
}

body {
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(at 15% 15%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
    radial-gradient(at 85% 85%, rgba(168, 85, 247, 0.12) 0px, transparent 50%),
    radial-gradient(at 50% 50%, rgba(6, 182, 212, 0.08) 0px, transparent 50%);
  background-attachment: fixed;
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.7;
  direction: rtl;
}

/* Layout & Containers */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 24px 20px;
}

/* Header Nav Bar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  margin-bottom: 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-brand i {
  font-size: 1.8rem;
  color: var(--accent-purple);
  filter: drop-shadow(0 0 10px var(--accent-purple));
}

.nav-brand h1 {
  font-size: 1.25rem;
  font-weight: 800;
  background: linear-gradient(135deg, #fff 0%, var(--text-muted) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}

.nav-btn:hover {
  background: rgba(168, 85, 247, 0.15);
  border-color: var(--accent-purple);
  color: #fff;
  transform: translateY(-2px);
}

.nav-btn.primary {
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-indigo));
  border: none;
  box-shadow: 0 4px 15px rgba(168, 85, 247, 0.3);
}

.nav-btn.primary:hover {
  box-shadow: 0 6px 20px rgba(168, 85, 247, 0.5);
}

/* User Progress Bar Header Header Widget */
.user-stats-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.stat-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-3px);
  box-shadow: var(--glow-purple);
}

.stat-icon {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  background: rgba(168, 85, 247, 0.15);
  color: var(--accent-purple);
  border: 1px solid rgba(168, 85, 247, 0.3);
}

.stat-icon.emerald {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border-color: rgba(16, 185, 129, 0.3);
}

.stat-icon.amber {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
  border-color: rgba(245, 158, 11, 0.3);
}

.stat-info h4 {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
}

.stat-info .value {
  font-size: 1.35rem;
  font-weight: 800;
  color: #fff;
}

/* Progress Fill Bar */
.progress-container {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 8px;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-purple), var(--accent-cyan));
  width: 0%;
  transition: width 0.6s ease;
  border-radius: 4px;
}

/* Hero Section */
.course-hero {
  background: linear-gradient(135deg, rgba(30, 27, 75, 0.7) 0%, rgba(15, 23, 42, 0.85) 100%);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin-bottom: 35px;
  position: relative;
  overflow: hidden;
}

.course-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 300px;
  height: 300px;
  background: var(--accent-purple);
  opacity: 0.15;
  filter: blur(80px);
  border-radius: 50%;
  pointer-events: none;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(168, 85, 247, 0.15);
  border: 1px solid rgba(168, 85, 247, 0.3);
  border-radius: 20px;
  color: #d8b4fe;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.course-hero h2 {
  font-size: 2rem;
  font-weight: 900;
  margin-bottom: 14px;
  background: linear-gradient(135deg, #ffffff 30%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.course-hero p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 850px;
  margin-bottom: 24px;
}

.hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.04);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-glass);
}

.highlight-item i {
  color: var(--accent-cyan);
}

/* Sections Grid & Modules */
.section-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 20px;
  color: #fff;
}

.section-title i {
  color: var(--accent-purple);
}

.modules-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 40px;
}

.module-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
}

.module-card:hover {
  border-color: rgba(168, 85, 247, 0.3);
}

.module-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-glass);
}

.module-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--accent-purple);
  display: flex;
  align-items: center;
  gap: 10px;
}

.module-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.lessons-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.lesson-item {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 12px;
  transition: var(--transition);
  text-decoration: none;
  color: var(--text-main);
  position: relative;
  overflow: hidden;
}

.lesson-item:hover {
  background: rgba(30, 41, 59, 0.8);
  border-color: var(--accent-indigo);
  transform: translateY(-2px);
}

.lesson-item.completed {
  border-color: rgba(16, 185, 129, 0.4);
  background: rgba(16, 185, 129, 0.05);
}

.lesson-item.completed::after {
  content: '✓';
  position: absolute;
  top: 10px;
  left: 10px;
  width: 24px;
  height: 24px;
  background: var(--accent-emerald);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: bold;
}

.lesson-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.lesson-header i {
  font-size: 1.2rem;
  color: var(--accent-cyan);
  margin-top: 4px;
}

.lesson-title-text {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
}

.lesson-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.xp-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: #fef08a;
  border-radius: 12px;
  font-weight: 700;
}

/* Tools & Games Grid */
.interactive-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}

.interactive-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
  transition: var(--transition);
  text-decoration: none;
  color: var(--text-main);
}

.interactive-card:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(6, 182, 212, 0.15);
}

.interactive-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.2), rgba(99, 102, 241, 0.2));
  border: 1px solid rgba(6, 182, 212, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--accent-cyan);
}

.interactive-card.game .interactive-icon {
  background: linear-gradient(135deg, rgba(244, 63, 94, 0.2), rgba(168, 85, 247, 0.2));
  border-color: rgba(244, 63, 94, 0.4);
  color: var(--accent-rose);
}

.interactive-title {
  font-size: 1.1rem;
  font-weight: 700;
}

.interactive-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* Interactive Components inside Lessons & Tools */
.lesson-container {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 35px;
  margin-bottom: 30px;
}

.lesson-section {
  margin-bottom: 30px;
}

.lesson-section h3 {
  font-size: 1.3rem;
  color: var(--accent-cyan);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.interactive-box {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(168, 85, 247, 0.25);
  border-radius: var(--radius-md);
  padding: 24px;
  margin: 20px 0;
}

.btn-action {
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-indigo));
  color: #fff;
  border: none;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(168, 85, 247, 0.3);
}

.btn-action:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(168, 85, 247, 0.5);
}

.btn-action.secondary {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-glass);
  box-shadow: none;
}

.btn-action.secondary:hover {
  background: rgba(255, 255, 255, 0.15);
}

.btn-action.success {
  background: linear-gradient(135deg, var(--accent-emerald), #059669);
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

/* Drag and Drop Zone */
.drag-zone {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.drop-box {
  background: rgba(30, 41, 59, 0.6);
  border: 2px dashed rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 16px;
  min-height: 120px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.drag-item {
  background: rgba(168, 85, 247, 0.2);
  border: 1px solid rgba(168, 85, 247, 0.4);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  cursor: grab;
  font-weight: 600;
  user-select: none;
  transition: var(--transition);
}

.drag-item:hover {
  background: rgba(168, 85, 247, 0.35);
}

/* Modals & Toasts */
.toast-notification {
  position: fixed;
  bottom: 30px;
  left: 30px;
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid var(--accent-emerald);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), var(--glow-emerald);
  padding: 16px 24px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 14px;
  color: #fff;
  font-weight: 700;
  z-index: 9999;
  transform: translateY(100px);
  opacity: 0;
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.4s ease;
}

.toast-notification.show {
  transform: translateY(0);
  opacity: 1;
}

/* Badges Showcase Modal */
.badge-item {
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  opacity: 0.4;
  filter: grayscale(1);
  transition: var(--transition);
}

.badge-item.unlocked {
  opacity: 1;
  filter: grayscale(0);
  border-color: var(--accent-amber);
  background: rgba(245, 158, 11, 0.1);
}

.badge-icon {
  font-size: 2rem;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Responsive Media Queries */
@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
  
  .course-hero h2 {
    font-size: 1.5rem;
  }
  
  .lessons-list {
    grid-template-columns: 1fr;
  }
  
  .interactive-grid {
    grid-template-columns: 1fr;
  }
}