@import url('https://fonts.googleapis.com/css2?family=Inter:opsz,wght@14..32,300;14..32,400;14..32,500;14..32,600;14..32,700;14..32,800&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  /* Base */
  --bg-dark: #0A0F0C;
  --bg-elevated: #111813;
  --bg-surface: #141b16;
  
  /* Accent */
  --accent: #22c55e;
  --accent-hover: #16a34a;
  --accent-dim: rgba(34, 197, 94, 0.15);
  --accent-glow: rgba(34, 197, 94, 0.25);
  
  /* Text */
  --text-primary: #EFF3EC;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --text-dim: #4b5563;
  
  /* Border */
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(34, 197, 94, 0.35);
  --border-active: rgba(34, 197, 94, 0.5);
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 24px rgba(34, 197, 94, 0.08);
  
  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Space Grotesk', monospace;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  
  /* Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6, .font-display {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  line-height: 1.2;
  font-weight: 700;
}

.text-balance {
  text-wrap: balance;
}

/* Selection */
::selection {
  background: rgba(34, 197, 94, 0.25);
  color: #fff;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(34, 197, 94, 0.4);
}

/* Focus Visible */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Navigation */
.nav-blur {
  background: rgba(10, 15, 12, 0.88);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  border-bottom: 1px solid var(--border);
}

/* Glass Cards */
.glass-card {
  background: rgba(18, 24, 20, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  transition: all var(--transition-slow);
}

.glass-card:hover {
  border-color: var(--border-hover);
  background: rgba(18, 24, 20, 0.85);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

/* Buttons */
.btn-primary {
  background: var(--accent);
  color: var(--bg-dark);
  font-weight: 700;
  border-radius: var(--radius-full);
  padding: 0.75rem 1.75rem;
  font-size: 0.875rem;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 14px rgba(34, 197, 94, 0.25);
}

.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.15) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px) scale(0.98);
  box-shadow: 0 6px 20px rgba(34, 197, 94, 0.35);
}

.btn-primary:hover::after {
  opacity: 1;
}

.btn-primary:active {
  transform: translateY(0) scale(0.96);
}

.btn-outline {
  border: 1px solid rgba(34, 197, 94, 0.4);
  background: transparent;
  color: var(--text-primary);
  font-weight: 500;
  border-radius: var(--radius-full);
  padding: 0.7rem 1.5rem;
  font-size: 0.875rem;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  cursor: pointer;
}

.btn-outline:hover {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--text-primary);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-weight: 500;
  border-radius: var(--radius-full);
  padding: 0.6rem 1.25rem;
  font-size: 0.8rem;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  cursor: pointer;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--text-primary);
}

/* Product / Course Cards */
.product-card,
.course-card {
  background: var(--bg-elevated);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  transition: all var(--transition-slow);
  border: 1px solid var(--border);
  position: relative;
}

.product-card::before,
.course-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(180deg, rgba(255,255,255,0.06) 0%, transparent 40%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.product-card:hover::before,
.course-card:hover::before {
  opacity: 1;
}

.product-card:hover,
.course-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

/* Service Cards */
.service-card {
  background: rgba(18, 24, 20, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  transition: all var(--transition-slow);
}

.service-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
}

/* Inputs */
.input-glass {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.1rem;
  color: var(--text-primary);
  font-size: 0.875rem;
  outline: none;
  width: 100%;
  transition: all var(--transition-fast);
}

.input-glass::placeholder {
  color: var(--text-muted);
}

.input-glass:hover {
  border-color: rgba(255, 255, 255, 0.12);
}

.input-glass:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

/* Animations */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(12px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-fade-up {
  animation: fadeUp 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  opacity: 0;
}

.animate-fade-in {
  animation: fadeIn 0.4s ease forwards;
}

.animate-scale-in {
  animation: scaleIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-slide-in {
  animation: slideInRight 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Spinner */
.spinner {
  width: 1.5rem;
  height: 1.5rem;
  border: 2px solid rgba(34, 197, 94, 0.15);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

/* Status Pills */
.status-pending {
  background: rgba(245, 158, 11, 0.1);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.status-approved {
  background: rgba(34, 197, 94, 0.1);
  color: var(--accent);
  border: 1px solid rgba(34, 197, 94, 0.2);
}

.status-rejected {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Category Badge */
.category-badge {
  background: var(--accent-dim);
  border: 1px solid rgba(34, 197, 94, 0.25);
  border-radius: var(--radius-full);
  padding: 0.25rem 0.85rem;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  backdrop-filter: blur(8px);
}

/* Hero */
.hero-gradient {
  background: 
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(34, 197, 94, 0.08), transparent),
    radial-gradient(ellipse 60% 40% at 80% 50%, rgba(34, 197, 94, 0.04), transparent);
  position: relative;
}

.hero-gradient::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%2322c55e' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
  pointer-events: none;
}

/* Stat Card */
.stat-card {
  background: rgba(18, 24, 20, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.stat-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(34, 197, 94, 0.3), transparent);
  opacity: 0;
  transition: opacity var(--transition-slow);
}

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

.stat-card:hover::after {
  opacity: 1;
}

.stat-number {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--accent);
  font-family: var(--font-display);
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  font-weight: 600;
}

/* Tab Button */
.tab-btn {
  padding: 0.55rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  cursor: pointer;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  white-space: nowrap;
}

.tab-btn:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--text-primary);
}

.tab-btn.active {
  background: var(--accent-dim);
  color: var(--accent);
  border-color: rgba(34, 197, 94, 0.35);
}

/* Modal */
.modal-overlay {
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  padding: 0.875rem 1.25rem;
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: fadeUp 0.3s ease;
  font-size: 0.875rem;
  font-weight: 500;
  max-width: 90vw;
}

.toast-success {
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.25);
  color: var(--accent);
}

.toast-error {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.25);
  color: #ef4444;
}

/* Skeleton Loading */
.skeleton {
  background: linear-gradient(90deg, rgba(255,255,255,0.02) 25%, rgba(255,255,255,0.05) 50%, rgba(255,255,255,0.02) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.8s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  border-radius: var(--radius-md);
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  padding: var(--space-5);
  height: 340px;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.skeleton-img { 
  height: 180px; 
  width: 100%; 
  border-radius: var(--radius-lg); 
}

.skeleton-title { 
  height: 24px; 
  width: 65%; 
}

.skeleton-text { 
  height: 12px; 
  width: 100%; 
}

.skeleton-text-sm { 
  height: 12px; 
  width: 45%; 
}

.skeleton-btn { 
  height: 42px; 
  width: 100%; 
  border-radius: var(--radius-full); 
  margin-top: auto;
}

/* Admin / Profile Inputs */
.input-glass-profile {
  width: 100%;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.65rem 1rem;
  color: var(--text-primary);
  font-size: 0.85rem;
  outline: none;
  transition: all var(--transition-fast);
}

.input-glass-profile:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.08);
}

/* Password Strength */
.password-strength-meter {
  height: 3px;
  border-radius: 3px;
  background: rgba(255,255,255,0.06);
  overflow: hidden;
  margin-top: 6px;
}

.password-strength-bar {
  height: 100%;
  width: 0%;
  transition: width 0.3s ease;
}

/* Lesson Items (Course Page) */
.lesson-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 0.875rem 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.lesson-item:hover {
  background: rgba(34, 197, 94, 0.06);
  border-color: rgba(34, 197, 94, 0.25);
}

.lesson-item.active {
  background: rgba(34, 197, 94, 0.1);
  border-color: rgba(34, 197, 94, 0.4);
  box-shadow: 0 0 16px rgba(34, 197, 94, 0.06);
}

.lesson-number {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-md);
  background: var(--accent-dim);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.lesson-item.active .lesson-number {
  background: var(--accent);
  color: var(--bg-dark);
}

.completed-check {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid rgba(34, 197, 94, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.completed-check.done {
  background: var(--accent);
  border-color: var(--accent);
}

/* Video Container */
.video-container {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: #000;
  box-shadow: var(--shadow-lg);
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  border-radius: var(--radius-xl);
}

/* PDF Cover Container (9:16) */
.pdf-cover-container {
  position: relative;
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  aspect-ratio: 9 / 16;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}

.pdf-cover-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.pdf-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: rgba(239, 68, 68, 0.9);
  color: white;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-sm);
}

/* Progress Bar */
.progress-track {
  height: 6px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-hover), var(--accent));
  border-radius: var(--radius-full);
  transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 0 8px rgba(34, 197, 94, 0.3);
}

/* Preview Badge */
.preview-badge {
  background: rgba(245, 158, 11, 0.12);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.25);
  font-size: 0.65rem;
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(10, 15, 12, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  padding: 5rem 1.5rem 2rem;
  gap: 0.5rem;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-menu.open {
  transform: translateX(0);
}

.mobile-menu a {
  padding: 0.875rem 1rem;
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.mobile-menu a:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
}

/* Utility */
.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.scrollbar-hide::-webkit-scrollbar {
  display: none;
}

.scrollbar-hide {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* Responsive */
@media (max-width: 768px) {
  :root {
    --space-16: 2.5rem;
    --space-20: 3rem;
  }
  
  .stat-number {
    font-size: 1.75rem;
  }
  
  .btn-primary, .btn-outline {
    padding: 0.65rem 1.25rem;
    font-size: 0.8rem;
  }
  
  h1 {
    font-size: 1.875rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .pdf-cover-container {
    max-width: 280px;
  }
}

@media (max-width: 640px) {
  .course-card .p-5 {
    padding: 1rem;
  }
}