/* ========================================
   VulnQuest Portfolio - Main Stylesheet
   ======================================== */

/* === Variables === */
:root {
  /* Colors */
  --bg-primary: #05080a;
  --bg-secondary: #0a1114;
  --bg-tertiary: #0f1a1f;
  --bg-card: #0a1318;
  
  --text-primary: #e1ece7;
  --text-secondary: #9cb5a9;
  --text-muted: #687e74;
  
  --accent-primary: #00ff66;
  --accent-secondary: #00e5ff;
  --accent-success: #00ff66;
  --accent-warning: #ffd600;
  --accent-danger: #ff1744;
  
  --gradient-primary: linear-gradient(135deg, #00ff66 0%, #00e5ff 100%);
  --gradient-dark: linear-gradient(135deg, #05080a 0%, #0f1a1f 100%);
  --gradient-card: linear-gradient(135deg, rgba(0, 255, 102, 0.08) 0%, rgba(0, 229, 255, 0.08) 100%);
  
  /* Typography */
  --font-primary: 'Inter', 'Cairo', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Borders */
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --border-color: rgba(0, 255, 102, 0.08);
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 20px rgba(0, 255, 102, 0.25);
  
  /* Transitions */
  --transition: all 0.3s ease;
}

/* === Reset & Base === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 50%, rgba(0, 255, 102, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(0, 229, 255, 0.03) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

/* RTL Support */
[dir="rtl"] {
  text-align: right;
}

[dir="rtl"] .nav-menu {
  flex-direction: row-reverse;
}

/* === Container === */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* === Header === */
.site-header {
  background: rgba(5, 8, 10, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 255, 102, 0.12);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 0.85rem 0;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  width: 100%;
}

.nav-menu {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  list-style: none;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
}

.nav-menu li {
  display: flex;
  align-items: center;
}

.nav-menu a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.88rem;
  padding: 0.45rem 0.8rem;
  border-radius: var(--border-radius);
  border: 1px solid transparent;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  white-space: nowrap;
}

.nav-menu a i {
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: color 0.25s ease;
}

.nav-menu a:hover {
  color: var(--text-primary);
  background: rgba(0, 255, 102, 0.08);
  border-color: rgba(0, 255, 102, 0.25);
  box-shadow: 0 0 10px rgba(0, 255, 102, 0.15);
}

.nav-menu a:hover i {
  color: var(--accent-primary);
}

.nav-menu a.active {
  background: rgba(0, 255, 102, 0.14) !important;
  border-color: #00ff66 !important;
  color: #00ff66 !important;
  box-shadow: 0 0 14px rgba(0, 255, 102, 0.3) !important;
  font-weight: 700 !important;
}

.nav-menu a.active i {
  color: #00ff66 !important;
}

.nav-menu a.active:hover {
  background: #00ff66 !important;
  color: #05080a !important;
  box-shadow: 0 0 18px rgba(0, 255, 102, 0.5) !important;
}

.nav-menu a.active:hover i {
  color: #05080a !important;
}

.nav-search-item {
  margin-left: auto;
}

.search-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: rgba(0, 255, 102, 0.06);
  border: 1px solid rgba(0, 255, 102, 0.2);
  border-radius: var(--border-radius);
  color: var(--text-secondary);
  padding: 0.45rem 0.85rem;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-primary);
  font-weight: 600;
  font-size: 0.88rem;
  white-space: nowrap;
}

.search-trigger i {
  color: var(--accent-primary);
}

.search-trigger:hover {
  border-color: var(--accent-primary);
  color: var(--text-primary);
  background: rgba(0, 255, 102, 0.12);
  box-shadow: 0 0 12px rgba(0, 255, 102, 0.25);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* === Main Content === */
.main-content {
  min-height: calc(100vh - 200px);
  padding: var(--spacing-2xl) 0;
}

/* === Hero Section === */
.hero {
  text-align: center;
  padding: var(--spacing-2xl) 0;
  margin-bottom: var(--spacing-2xl);
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: var(--spacing-md);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 auto var(--spacing-xl);
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(0, 217, 255, 0.5);
}

.btn-secondary {
  background: transparent;
  color: var(--accent-primary);
  border: 2px solid var(--accent-primary);
}

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

/* === Cards Grid === */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin: var(--spacing-xl) 0;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-lg);
}

.card:hover::before {
  transform: scaleX(1);
}

.card-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.card-description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.card-link {
  color: var(--accent-primary);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.card-link:hover {
  gap: var(--spacing-sm);
}

/* === Section === */
.section {
  margin-bottom: var(--spacing-2xl);
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-lg);
  text-align: center;
  position: relative;
  padding-bottom: var(--spacing-md);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

/* === Page Header === */
.page-header {
  background: var(--gradient-dark);
  padding: var(--spacing-2xl) 0;
  margin-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--border-color);
}

.page-title {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
}

/* === Content === */
.page-content,
.post-content {
  max-width: 900px;
  margin: 0 auto;
}

.page-content h1,
.page-content h2,
.page-content h3,
.page-content h4,
.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4 {
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.page-content h2,
.post-content h2 {
  font-size: 2rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: var(--spacing-sm);
}

.page-content p,
.post-content p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

.page-content a,
.post-content a {
  color: var(--accent-primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.page-content a:hover,
.post-content a:hover {
  border-bottom-color: var(--accent-primary);
}

/* === Code Blocks === */
code {
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.9em;
  color: var(--accent-primary);
}

pre {
  background: var(--bg-tertiary);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  overflow-x: auto;
  margin: var(--spacing-md) 0;
  border: 1px solid var(--border-color);
}

pre code {
  background: none;
  padding: 0;
  color: var(--text-primary);
}

/* === Lists === */
.page-content ul,
.page-content ol,
.post-content ul,
.post-content ol {
  margin: var(--spacing-md) 0;
  padding-left: var(--spacing-xl);
  color: var(--text-secondary);
}

[dir="rtl"] .page-content ul,
[dir="rtl"] .page-content ol,
[dir="rtl"] .post-content ul,
[dir="rtl"] .post-content ol {
  padding-left: 0;
  padding-right: var(--spacing-xl);
}

.page-content li,
.post-content li {
  margin-bottom: var(--spacing-sm);
}

/* === Tables === */
table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
  background: var(--bg-card);
  border-radius: var(--border-radius);
  overflow: hidden;
}

th, td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

[dir="rtl"] th,
[dir="rtl"] td {
  text-align: right;
}

th {
  background: var(--bg-tertiary);
  color: var(--accent-primary);
  font-weight: 600;
}

tr:hover {
  background: var(--bg-tertiary);
}

/* === Tags === */
.tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--accent-primary);
  margin: 2px;
}

/* === Post Meta === */
.post-meta {
  display: flex;
  gap: var(--spacing-lg);
  color: var(--text-muted);
  font-size: 0.9rem;
  flex-wrap: wrap;
}

.post-meta span {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.post-category {
  display: inline-block;
  padding: 4px 12px;
  background: var(--gradient-primary);
  color: white;
  border-radius: 20px;
  font-size: 0.85rem;
  margin-bottom: var(--spacing-md);
}

/* === Footer === */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h3,
.footer-section h4 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.footer-section p {
  color: var(--text-secondary);
}

.footer-section ul {
  list-style: none;
}

.footer-section a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
  display: block;
  padding: var(--spacing-xs) 0;
}

.footer-section a:hover {
  color: var(--accent-primary);
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
}

.social-links a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border-radius: 50%;
  color: var(--text-primary);
  transition: var(--transition);
}

.social-links a:hover {
  background: var(--gradient-primary);
  transform: translateY(-3px);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
}

.footer-bottom i {
  color: var(--accent-danger);
}

/* === 404 Page === */
.error-page {
  text-align: center;
  padding: var(--spacing-2xl) 0;
}

.error-code {
  font-size: 8rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-md);
}

/* === Responsive === */
@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--bg-secondary);
    flex-direction: column;
    padding: var(--spacing-xl);
    transition: var(--transition);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.25rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .page-title {
    font-size: 2rem;
  }
  
  .cards-grid {
    grid-template-columns: 1fr;
  }
}

/* === Animations === */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card,
.section {
  animation: fadeIn 0.6s ease-out;
}

/* === Scrollbar === */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--gradient-primary);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-primary);
}

/* === Scroll Animation Classes === */
.will-animate {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.will-animate.animate-in {
  opacity: 1;
  transform: translateY(0);
}

/* === Copy Button === */
.copy-button {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(0, 217, 255, 0.1);
  border: 1px solid rgba(0, 217, 255, 0.25);
  color: var(--accent-primary);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--font-mono);
  transition: background 0.2s ease, border-color 0.2s ease;
  z-index: 10;
}
.copy-button:hover { background: rgba(0, 217, 255, 0.2); }
.copy-button.copied { color: var(--accent-success); border-color: var(--accent-success); }

/* === Badge Styles === */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.03em;
}
.badge-success { background: rgba(16,185,129,0.15); color: #10b981; border: 1px solid rgba(16,185,129,0.3); }
.badge-info    { background: rgba(0,217,255,0.12);  color: #00d9ff; border: 1px solid rgba(0,217,255,0.25); }
.badge-warning { background: rgba(245,158,11,0.15); color: #f59e0b; border: 1px solid rgba(245,158,11,0.3); }
.badge-danger  { background: rgba(239,68,68,0.15);  color: #ef4444; border: 1px solid rgba(239,68,68,0.3); }
.badge-dark    { background: rgba(255,255,255,0.06); color: #b0b3b8; border: 1px solid rgba(255,255,255,0.1); }

.badge-language { background: rgba(124,58,237,0.15); color: #a78bfa; border: 1px solid rgba(124,58,237,0.3); }
.badge-status   { margin-left: 6px; }
.tool-badges    { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }

/* === Certification Cards === */
.certifications-list { display: flex; flex-direction: column; gap: 20px; }
.cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.cert-card:hover { border-color: var(--accent-primary); box-shadow: 0 0 20px rgba(0,217,255,0.08); }
.cert-header { display: flex; align-items: center; gap: 16px; margin-bottom: 12px; }
.cert-icon  { font-size: 28px; flex-shrink: 0; }
.cert-title-group h3 { font-size: 1rem; color: var(--text-primary); margin-bottom: 2px; }
.cert-issuer { font-size: 0.8rem; color: var(--accent-primary); font-weight: 500; }
.cert-body p  { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 12px; }
.cert-meta    { list-style: none; display: flex; flex-wrap: wrap; gap: 16px; }
.cert-meta li { font-size: 0.82rem; color: var(--text-muted); }
.cert-meta li strong { color: var(--text-secondary); }

/* === Contact Cards === */
.contact-methods { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; margin-bottom: 40px; }
.contact-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  transition: border-color 0.2s ease;
}
.contact-card:hover { border-color: var(--accent-primary); }
.contact-icon { font-size: 22px; color: var(--accent-primary); flex-shrink: 0; padding-top: 2px; }
.contact-details h3 { font-size: 0.95rem; margin-bottom: 4px; color: var(--text-primary); }
.contact-details p  { font-size: 0.85rem; color: var(--text-secondary); }
.contact-details code { font-size: 0.75rem; background: var(--bg-tertiary); padding: 2px 6px; border-radius: 4px; }

/* === Platform Cards (CTF) === */
.platforms-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; margin-bottom: 40px; }
.platform-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.platform-card:hover { border-color: var(--accent-primary); transform: translateY(-3px); }
.platform-logo { font-size: 32px; color: var(--accent-primary); }
.platform-info h3 { font-size: 1rem; color: var(--text-primary); margin-bottom: 6px; }
.platform-info p  { font-size: 0.87rem; color: var(--text-secondary); margin-bottom: 12px; }
.platform-stats   { list-style: none; font-size: 0.82rem; color: var(--text-muted); margin-bottom: 16px; }
.platform-stats li strong { color: var(--text-secondary); }

/* === C2 Framework Cards === */
.c2-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.c2-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  transition: border-color 0.2s ease;
}
.c2-card:hover { border-color: var(--accent-secondary); }
.c2-title-section { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.c2-title-section h3 { font-size: 0.97rem; color: var(--text-primary); }
.c2-card p { font-size: 0.87rem; color: var(--text-secondary); margin-bottom: 14px; }

/* === CTF Challenges Table === */
.challenges-table { width: 100%; border-collapse: collapse; margin-bottom: 24px; font-size: 0.88rem; }
.challenges-table th {
  background: var(--bg-tertiary);
  color: var(--accent-primary);
  text-align: left;
  padding: 10px 14px;
  font-weight: 600;
  border-bottom: 2px solid var(--border-color);
}
.challenges-table td { padding: 10px 14px; border-bottom: 1px solid var(--border-color); color: var(--text-secondary); }
.challenges-table tr:hover td { background: rgba(0,217,255,0.03); }
.category-section { margin-bottom: 40px; }
.category-section h3 { color: var(--accent-primary); margin-bottom: 16px; font-size: 1rem; }

/* === CTF Writeups Timeline === */
.timeline { position: relative; padding-left: 24px; }
.timeline::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: var(--border-color); }
.timeline-item { position: relative; margin-bottom: 32px; }
.timeline-item::before { content: ''; position: absolute; left: -28px; top: 6px; width: 10px; height: 10px; border-radius: 50%; background: var(--accent-primary); box-shadow: 0 0 8px rgba(0,217,255,0.4); }
.timeline-date { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 6px; font-family: var(--font-mono); }
.timeline-content h3 { font-size: 0.95rem; margin-bottom: 6px; }
.timeline-content h3 a { color: var(--text-primary); text-decoration: none; transition: color 0.2s ease; }
.timeline-content h3 a:hover { color: var(--accent-primary); }
.timeline-content p  { font-size: 0.85rem; color: var(--text-secondary); }

/* === Skills Grid === */
.skills-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 24px; }
.skill-category {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 22px;
}
.skill-category h3 { font-size: 0.95rem; color: var(--accent-primary); margin-bottom: 14px; }
.skill-category ul { list-style: none; }
.skill-category li { font-size: 0.87rem; color: var(--text-secondary); padding: 5px 0; border-bottom: 1px solid rgba(255,255,255,0.04); }
.skill-category li:last-child { border-bottom: none; }
.skill-category li strong { color: var(--text-primary); }

/* === Active Nav Link === */
.nav-menu a.active { color: var(--accent-primary); }

/* === CTF HUB GRID & CARDS === */
.ctf-hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}
.ctf-hub-card {
  background: linear-gradient(135deg, rgba(21, 26, 53, 0.6) 0%, rgba(26, 31, 58, 0.8) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  display: flex;
  gap: var(--spacing-md);
  text-decoration: none !important;
  color: var(--text-primary) !important;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), border-color 0.3s ease, box-shadow 0.3s ease;
  backdrop-filter: blur(10px);
}
.ctf-hub-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 217, 255, 0.4);
  box-shadow: 0 10px 30px rgba(0, 217, 255, 0.15);
}
.ctf-hub-card.platforms-card:hover { border-color: rgba(16, 185, 129, 0.4); box-shadow: 0 10px 30px rgba(16, 185, 129, 0.15); }
.ctf-hub-card.challenges-card:hover { border-color: rgba(124, 58, 237, 0.4); box-shadow: 0 10px 30px rgba(124, 58, 237, 0.15); }
.ctf-hub-card.vuln-card:hover { border-color: rgba(239, 68, 68, 0.4); box-shadow: 0 10px 30px rgba(239, 68, 68, 0.15); }

.hub-card-icon {
  font-size: 2.8rem;
  flex-shrink: 0;
}
.hub-card-body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  width: 100%;
}
.hub-card-body h2 {
  font-size: 1.4rem;
  margin: 0;
  color: var(--text-primary);
}
.hub-card-body p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}
.hub-card-stats {
  display: flex;
  gap: var(--spacing-md);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: auto;
  padding-top: var(--spacing-sm);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  flex-wrap: wrap;
}
.hub-card-stats span strong {
  color: var(--text-primary);
}
.hub-card-cta {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-primary);
  margin-top: var(--spacing-xs);
  transition: transform 0.2s ease;
}
.ctf-hub-card:hover .hub-card-cta {
  transform: translateX(4px);
}

.ctf-quick-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--spacing-md);
  margin: var(--spacing-xl) 0;
}
.qs-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  text-align: center;
  transition: border-color 0.2s ease;
}
.qs-item:hover {
  border-color: var(--accent-primary);
}
.qs-num {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent-primary);
  margin-bottom: 2px;
}
.qs-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.recent-writeup-card {
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-sm);
  gap: var(--spacing-md);
  flex-wrap: wrap;
  transition: border-color 0.2s ease;
}
.recent-writeup-card:hover {
  border-color: var(--accent-primary);
}
.rw-platform {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--accent-primary);
  background: rgba(0, 217, 255, 0.1);
  padding: 2px 8px;
  border-radius: 4px;
  min-width: 90px;
  text-align: center;
}
.rw-name {
  font-weight: 600;
  color: var(--text-primary);
  flex-grow: 1;
}
.rw-level {
  font-size: 0.8rem;
  padding: 2px 8px;
  border-radius: 4px;
}
.rw-level.rw-easy { background: rgba(16, 185, 129, 0.1); color: #10b981; }
.rw-level.rw-medium { background: rgba(245, 158, 11, 0.1); color: #f59e0b; }
.rw-level.rw-hard { background: rgba(239, 68, 68, 0.1); color: #ef4444; }
.rw-os {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.recent-writeup-card a {
  color: var(--accent-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
}

/* === PLATFORMS HUB GRID & CARDS === */
.platforms-hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}
.phub-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  display: flex;
  gap: var(--spacing-md);
  text-decoration: none !important;
  color: var(--text-primary) !important;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), border-color 0.3s ease, box-shadow 0.3s ease;
}
.phub-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}
.phub-logo {
  font-size: 2.2rem;
  flex-shrink: 0;
}
.phub-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  width: 100%;
}
.phub-info h3 {
  font-size: 1.1rem;
  margin: 0;
  color: var(--text-primary);
}
.phub-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin: 0 0 var(--spacing-sm) 0;
}
.phub-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: var(--spacing-sm);
}
.phub-count {
  color: var(--text-muted);
}
.phub-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
}
.phub-tags span {
  font-size: 0.7rem;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  padding: 1px 6px;
  border-radius: 4px;
}

/* Specific Platform Themes */
.phub-htb:hover { border-color: #9fef00; box-shadow: 0 5px 15px rgba(159, 239, 0, 0.15); }
.phub-thm:hover { border-color: #ff3e3e; box-shadow: 0 5px 15px rgba(255, 62, 62, 0.15); }
.phub-vh:hover { border-color: #2196f3; box-shadow: 0 5px 15px rgba(33, 150, 243, 0.15); }
.phub-hmv:hover { border-color: #e91e63; box-shadow: 0 5px 15px rgba(233, 30, 99, 0.15); }
.phub-pg:hover { border-color: #ff5722; box-shadow: 0 5px 15px rgba(255, 87, 34, 0.15); }
.phub-ps:hover { border-color: #ff6600; box-shadow: 0 5px 15px rgba(255, 102, 0, 0.15); }
.phub-ptl:hover { border-color: #9c27b0; box-shadow: 0 5px 15px rgba(156, 39, 176, 0.15); }
.phub-rm:hover { border-color: #4caf50; box-shadow: 0 5px 15px rgba(76, 175, 80, 0.15); }
/* New Platform Hub Themes */
.phub-dockerlabs:hover { border-color: #0db7ed; box-shadow: 0 5px 15px rgba(13, 183, 237, 0.18); }
.phub-picoctf:hover    { border-color: #ffcc00; box-shadow: 0 5px 15px rgba(255, 204, 0, 0.18); }
.phub-bugbountylabs:hover { border-color: #ff4081; box-shadow: 0 5px 15px rgba(255, 64, 129, 0.18); }
.phub-thehackerslabs:hover { border-color: #7c4dff; box-shadow: 0 5px 15px rgba(124, 77, 255, 0.18); }
.phub-vulnyx:hover     { border-color: #ef5350; box-shadow: 0 5px 15px rgba(239, 83, 80, 0.18); }
.phub-ctfs:hover       { border-color: #ffd700; box-shadow: 0 5px 15px rgba(255, 215, 0, 0.18); }


/* === CHALLENGES HUB GRID & CARDS === */
.challenges-hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}
.chub-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  text-decoration: none !important;
  color: var(--text-primary) !important;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), border-color 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}
.chub-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-primary);
  box-shadow: 0 8px 16px rgba(0, 217, 255, 0.1);
}
.chub-icon {
  font-size: 2.2rem;
  margin-bottom: var(--spacing-xs);
}
.chub-card h3 {
  font-size: 1.1rem;
  margin: 0;
  color: var(--text-primary);
}
.chub-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin: 0 0 var(--spacing-sm) 0;
}
.chub-meta {
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: var(--spacing-xs);
}

/* === INDIVIDUAL PLATFORM HERO BANNER === */
.platform-hero {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}
.plat-hero-icon {
  font-size: 4rem;
  flex-shrink: 0;
}
.plat-hero-text {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}
.plat-hero-text h2 {
  font-size: 2rem;
  margin: 0;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.plat-hero-text p {
  color: var(--text-secondary);
  margin: 0;
}
.plat-hero-badges {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

/* Platform Hero Branding Colors */
.htb-hero  { border-left: 5px solid #9fef00; }
.thm-hero  { border-left: 5px solid #ff3e3e; }
.vh-hero   { border-left: 5px solid #2196f3; }
.hmv-hero  { border-left: 5px solid #e91e63; }
.pg-hero   { border-left: 5px solid #ff5722; }
.ps-hero   { border-left: 5px solid #ff6600; }
.ptl-hero  { border-left: 5px solid #9c27b0; }
.rm-hero   { border-left: 5px solid #4caf50; }
/* New Platform Hero Branding */
.generic-hero          { border-left: 5px solid var(--accent-primary); }
.dockerlabs-hero       { border-left: 5px solid #0db7ed; }
.picoctf-hero          { border-left: 5px solid #ffcc00; }
.bugbountylabs-hero    { border-left: 5px solid #ff4081; }
.thehackerslabs-hero   { border-left: 5px solid #7c4dff; }
.vulnyx-hero           { border-left: 5px solid #ef5350; }
.ctfs-hero             { border-left: 5px solid #ffd700; }


/* === MACHINE FILTER BAR === */
.machine-filter-bar,
.challenge-year-nav {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-lg);
}
.mf-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: 20px;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.85rem;
  transition: all 0.2s ease;
}
.mf-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--accent-primary);
}
.mf-btn.active {
  background: var(--gradient-primary);
  color: white;
  border-color: transparent;
  box-shadow: 0 0 10px rgba(0, 217, 255, 0.3);
}

/* === MACHINES LISTS & CARDS === */
.machines-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}
.machine-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.machine-card:hover {
  border-color: var(--accent-primary);
  transform: translateX(4px);
}
.mc-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-shrink: 0;
  min-width: 180px;
}
.mc-os {
  font-size: 1.8rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border-radius: 50%;
  border: 1px solid var(--border-color);
}
.mc-os.linux { border-color: rgba(0, 217, 255, 0.25); color: #00d9ff; }
.mc-os.windows { border-color: rgba(33, 150, 243, 0.25); color: #2196f3; }
.mc-os.ad { border-color: rgba(239, 68, 68, 0.25); color: #ef4444; }
.mc-os.redteam { border-color: rgba(124, 58, 237, 0.25); color: #7c3aed; }
.mc-os.web { border-color: rgba(245, 158, 11, 0.25); color: #f59e0b; }
.mc-os.dfir { border-color: rgba(16, 185, 129, 0.25); color: #10b981; }
.mc-os.osint { border-color: rgba(255, 255, 255, 0.15); color: #b0b3b8; }

.mc-name {
  font-size: 1.1rem;
  margin: 0;
  color: var(--text-primary);
}
.mc-ip {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}
.mc-mid {
  flex-grow: 1;
}
.mc-tech {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.4;
}
.mc-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-shrink: 0;
}
.mc-diff {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.mc-diff.easy { background: rgba(16, 185, 129, 0.1); color: #10b981; border: 1px solid rgba(16, 185, 129, 0.2); }
.mc-diff.medium { background: rgba(245, 158, 11, 0.1); color: #f59e0b; border: 1px solid rgba(245, 158, 11, 0.2); }
.mc-diff.hard { background: rgba(239, 68, 68, 0.1); color: #ef4444; border: 1px solid rgba(239, 68, 68, 0.2); }
.mc-diff.insane { background: rgba(124, 58, 237, 0.15); color: #7c3aed; border: 1px solid rgba(124, 58, 237, 0.3); }

.mc-btn {
  display: inline-block;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--accent-primary);
  text-decoration: none !important;
  padding: 6px 14px;
  border-radius: var(--border-radius);
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.2s ease;
}
.mc-btn:hover {
  background: var(--accent-primary);
  color: var(--bg-primary);
  border-color: transparent;
  transform: translateY(-1px);
}

/* === CHALLENGE CARDS LISTS & CARDS === */
.challenge-cards-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}
.challenge-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  transition: border-color 0.25s ease;
}
.challenge-card:hover {
  border-color: var(--accent-primary);
}
.cc-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: var(--spacing-sm);
  gap: var(--spacing-md);
}
.cc-title-area {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}
.cc-event-badge {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2px 8px;
  border-radius: 4px;
  align-self: flex-start;
}
.cc-event-badge.google { background: rgba(239, 68, 68, 0.1); color: #ef4444; border: 1px solid rgba(239, 68, 68, 0.2); }
.cc-event-badge.htb { background: rgba(159, 239, 0, 0.1); color: #9fef00; border: 1px solid rgba(159, 239, 0, 0.2); }
.cc-event-badge.defcon { background: rgba(0, 217, 255, 0.1); color: #00d9ff; border: 1px solid rgba(0, 217, 255, 0.2); }
.cc-event-badge.pico { background: rgba(124, 58, 237, 0.1); color: #7c3aed; border: 1px solid rgba(124, 58, 237, 0.2); }
.cc-event-badge.generic { background: rgba(255, 255, 255, 0.05); color: var(--text-secondary); border: 1px solid rgba(255, 255, 255, 0.1); }

.cc-name {
  font-size: 1.25rem;
  margin: 0;
  color: var(--text-primary);
}
.cc-diff {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 4px;
  text-transform: uppercase;
}
.cc-diff.easy { background: rgba(16, 185, 129, 0.1); color: #10b981; border: 1px solid rgba(16, 185, 129, 0.2); }
.cc-diff.medium { background: rgba(245, 158, 11, 0.1); color: #f59e0b; border: 1px solid rgba(245, 158, 11, 0.2); }
.cc-diff.hard { background: rgba(239, 68, 68, 0.1); color: #ef4444; border: 1px solid rgba(239, 68, 68, 0.2); }

.cc-body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  font-size: 0.9rem;
}
.cc-body p {
  margin: 0;
  color: var(--text-secondary);
}
.cc-desc {
  color: var(--text-primary) !important;
  line-height: 1.5;
}
.cc-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-xs);
}
.cc-tags span {
  font-size: 0.72rem;
  background: var(--bg-secondary);
  color: var(--accent-primary);
  border: 1px solid var(--border-color);
  padding: 2px 8px;
  border-radius: 20px;
}

.cc-solution {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: var(--spacing-sm);
}
.cc-solution details {
  width: 100%;
}
.cc-solution summary {
  cursor: pointer;
  color: var(--accent-primary);
  font-weight: 600;
  font-size: 0.9rem;
  outline: none;
  user-select: none;
}
.cc-solution summary:hover {
  color: var(--text-primary);
}
.cc-solution-body {
  padding-top: var(--spacing-md);
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.cc-solution-body p {
  margin-bottom: var(--spacing-sm);
}
.cc-solution-body code {
  color: var(--accent-primary);
}
.cc-solution-body pre {
  margin-top: var(--spacing-sm);
}

.cc-btn {
  display: inline-block;
  align-self: flex-start;
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 6px 16px;
  border-radius: var(--border-radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.2s ease;
  text-decoration: none;
}
.cc-btn:hover {
  background: var(--accent-primary);
  color: var(--bg-primary);
  border-color: transparent;
  transform: translateY(-1px);
}

@media (max-width: 768px) {
  .machine-card {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }
  .mc-right {
    width: 100%;
    justify-content: space-between;
  }
  .platform-hero {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }
}

/* === Markdown Table Styling for Writeups === */
.page-content table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: var(--spacing-lg) 0 var(--spacing-xl) 0;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.page-content table th,
.page-content table td {
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid rgba(0, 255, 102, 0.04);
}

.page-content table th {
  background: rgba(0, 255, 102, 0.04);
  color: var(--accent-primary);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  border-bottom: 2px solid var(--border-color);
}

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

.page-content table tr:hover {
  background: rgba(0, 255, 102, 0.015);
}

.page-content table td:first-child {
  font-weight: 600;
  color: var(--text-primary);
  width: 25%;
  border-right: 1px solid rgba(0, 255, 102, 0.03);
}

.page-content table td:last-child {
  color: var(--text-secondary);
}

.page-content table td code {
  font-family: var(--font-mono);
  background: rgba(0, 255, 102, 0.08);
  padding: 3px 8px;
  border-radius: 4px;
  color: var(--accent-primary);
  font-size: 0.85rem;
  border: 1px solid rgba(0, 255, 102, 0.1);
}


/* === Hack The Box Info Card Styling === */
.htb-info-card {
  background: #0d1117;
  border: 1px solid rgba(159, 239, 0, 0.15);
  border-radius: 12px;
  padding: 24px;
  margin: 20px 0 35px 0;
  font-family: 'Inter', sans-serif;
  color: #e1ece7;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  max-width: 600px;
}

.htb-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.htb-header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.htb-avatar-glow {
  width: 64px;
  height: 64px;
  border-radius: 12px;
  border: 2px solid #9fef00;
  box-shadow: 0 0 10px rgba(159, 239, 0, 0.3);
  object-fit: cover;
  background: #161b22;
}

.htb-machine-title {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 800;
  color: #9fef00;
  text-shadow: 0 0 10px rgba(159, 239, 0, 0.1);
}

.htb-diff-badge {
  background: rgba(159, 239, 0, 0.1);
  color: #9fef00;
  border: 1px solid #9fef00;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.htb-meta-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.htb-meta-col {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.htb-meta-label {
  font-size: 0.7rem;
  color: #8b949e;
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.htb-meta-val {
  font-size: 1.1rem;
  font-weight: 700;
  color: #f0f6fc;
}

.htb-meta-val.green {
  color: #9fef00;
}

.htb-section-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.03);
  padding: 16px 0;
}

.htb-section-row.horizontal {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
}

.htb-section-label {
  font-size: 0.75rem;
  color: #8b949e;
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
  min-width: 140px;
}

/* Difficulty distribution bar chart */
.htb-bar-chart {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 40px;
  padding-bottom: 4px;
}

.htb-bar {
  width: 10px;
  background: #30363d;
  border-radius: 2px 2px 0 0;
  transition: background 0.3s;
}

.htb-bar.active-green {
  background: #9fef00;
}

.htb-bar.active-orange {
  background: #ff9f1a;
}

.htb-bar.active-red {
  background: #ff3838;
}

/* Digital clock style */
.htb-digital-clock {
  font-family: 'JetBrains Mono', monospace;
  background: #06090e;
  border: 1px solid #30363d;
  padding: 6px 12px;
  border-radius: 6px;
  color: #9fef00;
  font-size: 1.1rem;
  font-weight: 700;
  text-shadow: 0 0 8px rgba(159, 239, 0, 0.6);
  letter-spacing: 1px;
  display: inline-block;
}

/* Blood row user profile */
.htb-profile-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #161b22;
  border: 1px solid #30363d;
  padding: 6px 12px;
  border-radius: 6px;
  min-width: 200px;
}

.htb-profile-avatar {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  object-fit: cover;
}

.htb-profile-info {
  display: flex;
  flex-direction: column;
}

.htb-profile-name {
  font-size: 0.8rem;
  font-weight: 700;
  color: #f0f6fc;
}

.htb-profile-rank {
  font-size: 0.65rem;
  color: #8b949e;
}

.htb-blood-btn {
  background: rgba(255, 23, 68, 0.15);
  color: #ff1744;
  border: 1px solid #ff1744;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* === HackMyVM Info Card Styling === */
.hmv-info-card {
  background: #0d1117;
  border: 1px solid rgba(255, 159, 26, 0.15);
  border-radius: 12px;
  padding: 24px;
  margin: 20px 0 35px 0;
  font-family: 'Inter', sans-serif;
  color: #e1ece7;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  max-width: 600px;
}

.hmv-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.hmv-header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.hmv-avatar-glow {
  width: 64px;
  height: 64px;
  border-radius: 12px;
  border: 2px solid #ff9f1a;
  box-shadow: 0 0 10px rgba(255, 159, 26, 0.3);
  object-fit: cover;
  background: #161b22;
}

.hmv-machine-title {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 800;
  color: #ff9f1a;
  text-shadow: 0 0 10px rgba(255, 159, 26, 0.1);
}

.hmv-diff-badge {
  background: rgba(255, 159, 26, 0.1);
  color: #ff9f1a;
  border: 1px solid #ff9f1a;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hmv-meta-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.hmv-meta-col {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.hmv-meta-label {
  font-size: 0.7rem;
  color: #8b949e;
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.hmv-meta-val {
  font-size: 1.1rem;
  font-weight: 700;
  color: #f0f6fc;
}

.hmv-meta-val.orange {
  color: #ff9f1a;
}

/* === Badge Difficulty Colors === */
.htb-diff-badge.easy, .hmv-diff-badge.easy {
  background: rgba(0, 255, 102, 0.1);
  color: #00ff66;
  border-color: #00ff66;
}
.htb-diff-badge.medium, .hmv-diff-badge.medium {
  background: rgba(255, 159, 26, 0.1);
  color: #ff9f1a;
  border-color: #ff9f1a;
}
.htb-diff-badge.hard, .hmv-diff-badge.hard,
.htb-diff-badge.insane, .hmv-diff-badge.insane {
  background: rgba(255, 23, 68, 0.1);
  color: #ff1744;
  border-color: #ff1744;
}

/* === Scroll to Top Button === */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(10, 19, 24, 0.85);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  transform: translateY(10px);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  box-shadow: 0 0 15px rgba(0, 255, 102, 0.25);
  transform: translateY(-3px);
}

/* === Navbar Right & Search Trigger === */
.navbar-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.search-trigger {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: rgba(0, 255, 102, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-secondary);
  padding: 6px 12px;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-primary);
  font-weight: 500;
  font-size: 0.85rem;
}

.search-trigger:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  box-shadow: 0 0 10px rgba(0, 255, 102, 0.15);
}

.search-kbd {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 4px;
  color: var(--text-muted);
  font-size: 0.7rem;
  padding: 1px 5px;
  margin-left: 6px;
  font-family: var(--font-mono);
}

/* === Smart Search Modal === */
.search-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 2000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 10vh;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease-in-out;
}

.search-modal.active {
  opacity: 1;
  visibility: visible;
}

.search-modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(5, 8, 10, 0.8);
  backdrop-filter: blur(8px);
}

.search-modal-content {
  position: relative;
  width: 100%;
  max-width: 650px;
  background: #0d151a;
  border: 1px solid var(--accent-primary);
  border-radius: 12px;
  box-shadow: 0 10px 40px rgba(0, 255, 102, 0.15);
  display: flex;
  flex-direction: column;
  max-height: 70vh;
  overflow: hidden;
  transform: scale(0.95);
  transition: transform 0.25s ease-in-out;
}

.search-modal.active .search-modal-content {
  transform: scale(1);
}

.search-modal-header {
  display: flex;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  gap: var(--spacing-md);
}

.search-icon-active {
  color: var(--accent-primary);
  font-size: 1.2rem;
}

.search-modal-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.1rem;
  outline: none;
  font-family: var(--font-primary);
}

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

.search-close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.2rem;
  cursor: pointer;
  transition: var(--transition);
  padding: 4px;
}

.search-close-btn:hover {
  color: var(--accent-danger);
}

.search-modal-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-md) var(--spacing-lg);
}

/* Suggestions & Helper Tags */
.search-suggestions {
  margin-bottom: var(--spacing-md);
}

.search-section-title {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.search-filter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.search-tag {
  background: rgba(0, 255, 102, 0.04);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  color: var(--text-secondary);
  font-size: 0.75rem;
  padding: 4px 8px;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-mono);
}

.search-tag:hover {
  border-color: var(--accent-secondary);
  color: var(--accent-secondary);
  background: rgba(0, 229, 255, 0.05);
}

.search-shortcuts-info {
  display: flex;
  gap: var(--spacing-md);
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-top: var(--spacing-sm);
}

.search-shortcuts-info kbd {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 3px;
  padding: 1px 4px;
  font-family: var(--font-mono);
}

/* Search Loading / No results */
.search-loading, .search-no-results {
  color: var(--text-secondary);
  text-align: center;
  padding: var(--spacing-xl) 0;
  font-size: 0.95rem;
}

/* Results list items */
.search-results-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.search-result-item {
  display: flex;
  align-items: center;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 8px;
  text-decoration: none;
  transition: var(--transition);
  gap: var(--spacing-md);
}

.search-result-item:hover, .search-result-item.active {
  background: rgba(0, 255, 102, 0.03);
  border-color: var(--accent-primary);
}

.result-icon {
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 6px;
}

.search-result-item:hover .result-icon, .search-result-item.active .result-icon {
  background: rgba(0, 255, 102, 0.08);
}

.result-details {
  flex: 1;
  min-width: 0;
}

.result-title {
  color: var(--text-primary);
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.result-title mark {
  background: rgba(0, 255, 102, 0.2);
  color: var(--accent-primary);
  padding: 0 2px;
  border-radius: 2px;
}

.result-subtitle {
  color: var(--text-muted);
  font-size: 0.75rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.result-badges {
  display: flex;
  gap: var(--spacing-xs);
}

.search-badge {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.02em;
}

.search-badge.htb {
  background: rgba(159, 239, 0, 0.1);
  color: #9fef00;
  border: 1px solid #9fef00;
}

.search-badge.hmv {
  background: rgba(255, 159, 26, 0.1);
  color: #ff9f1a;
  border: 1px solid #ff9f1a;
}

.search-badge.easy {
  background: rgba(0, 255, 102, 0.08);
  color: #00ff66;
  border: 1px solid #00ff66;
}

.search-badge.medium {
  background: rgba(255, 159, 26, 0.08);
  color: #ff9f1a;
  border: 1px solid #ff9f1a;
}

.search-badge.hard, .search-badge.insane {
  background: rgba(255, 23, 68, 0.08);
  color: #ff1744;
  border: 1px solid #ff1744;
}

@media (max-width: 768px) {
  .search-trigger-text, .search-kbd {
    display: none;
  }
  .search-trigger {
    padding: 8px;
    border-radius: 50%;
  }
  .search-modal {
    padding-top: 5vh;
  }
  .search-modal-content {
    max-height: 90vh;
    width: 95vw;
  }
}


}

/* ========================================
   Courses Section & Password Vault Styles
   ======================================== */

.courses-hero-section {
  padding: 3rem 0 2rem 0;
  text-align: center;
  position: relative;
}

.courses-hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #00ff66 0%, #00e5ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.75rem;
}

.courses-hero-desc {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 700px;
  margin: 0 auto 1.5rem auto;
}

/* Category Filter Bar */
.courses-filter-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}

.courses-filter-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.5rem 1.25rem;
  border-radius: 20px;
  cursor: pointer;
  font-family: var(--font-primary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.courses-filter-btn:hover, .courses-filter-btn.active {
  background: rgba(0, 255, 102, 0.1);
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  box-shadow: 0 0 12px rgba(0, 255, 102, 0.2);
}

/* Course Grid (Vertical Cards) */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.course-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
  text-decoration: none;
  color: inherit;
}

.course-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-secondary);
  box-shadow: 0 10px 30px rgba(0, 229, 255, 0.15);
}

.course-card-cover-wrapper {
  position: relative;
  width: 100%;
  height: 200px;
  background: #0f1821;
  overflow: hidden;
}

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

.course-card:hover .course-card-cover {
  transform: scale(1.05);
}

.course-card-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0a1823 0%, #0d2232 100%);
  color: var(--accent-secondary);
}

.course-card-placeholder i {
  font-size: 3.5rem;
  margin-bottom: 0.5rem;
}

.course-card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, transparent 40%, rgba(10, 19, 24, 0.95) 100%);
}

.course-card-badges {
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 2;
}

.course-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.badge-category {
  background: rgba(10, 17, 20, 0.85);
  color: var(--accent-secondary);
  border: 1px solid rgba(0, 229, 255, 0.3);
  backdrop-filter: blur(4px);
}

.badge-price {
  background: rgba(255, 23, 68, 0.85);
  color: #fff;
  border: 1px solid rgba(255, 23, 68, 0.5);
  backdrop-filter: blur(4px);
}

.badge-price del {
  opacity: 0.7;
  margin-right: 4px;
}

.free-text {
  color: #00ff66;
  font-weight: 800;
}

.course-card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.course-card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.course-card-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex-grow: 1;
}

.course-card-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
  padding-top: 0.85rem;
  margin-bottom: 1rem;
}

.course-card-meta span {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.course-card-meta i {
  color: var(--accent-primary);
}

.btn-card-action {
  width: 100%;
  padding: 0.7rem 1rem;
  background: rgba(0, 255, 102, 0.08);
  border: 1px solid var(--accent-primary);
  color: var(--accent-primary);
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: 0.9rem;
  text-align: center;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.course-card:hover .btn-card-action {
  background: var(--accent-primary);
  color: #05080a;
  box-shadow: 0 0 15px rgba(0, 255, 102, 0.4);
}

/* === Course Detail Page === */
.course-detail-container {
  padding-bottom: 4rem;
}

.course-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  padding: 1.5rem 0 1rem 0;
}

.course-breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
}

.course-breadcrumb a:hover {
  color: var(--accent-primary);
}

.course-breadcrumb .separator {
  font-size: 0.7rem;
  opacity: 0.5;
}

.course-breadcrumb .current {
  color: var(--text-primary);
  font-weight: 500;
}

.course-hero {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 2.5rem 0;
  margin-bottom: 2.5rem;
}

.course-hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 2.5rem;
  align-items: center;
}

.course-hero-badges {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.course-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 0.75rem;
}

.course-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.course-hero-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
  background: rgba(5, 8, 10, 0.6);
  padding: 1rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.meta-item i {
  color: var(--accent-secondary);
  font-size: 1.1rem;
}

.course-hero-actions {
  display: flex;
  gap: 1rem;
}

.btn-outline-cyber {
  background: transparent;
  border: 1px solid var(--accent-secondary);
  color: var(--accent-secondary);
  padding: 0.6rem 1.25rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.btn-outline-cyber:hover {
  background: var(--accent-secondary);
  color: #05080a;
  box-shadow: 0 0 15px rgba(0, 229, 255, 0.4);
}

.course-hero-cover-wrapper {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  max-height: 320px;
}

.course-hero-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.course-hero-cover-placeholder {
  height: 260px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0d1e2b 0%, #152d40 100%);
  color: var(--accent-primary);
}

.course-hero-cover-placeholder .placeholder-icon {
  font-size: 4rem;
  margin-bottom: 0.75rem;
}

/* Course Body Layout */
.course-content-layout {
  display: grid;
  grid-template-columns: 1.8fr 1.2fr;
  gap: 2rem;
}

.course-glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 1.75rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-md);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
}

.card-title i {
  color: var(--accent-primary);
}

.syllabus-accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.syllabus-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: var(--bg-secondary);
  padding: 0.9rem 1.1rem;
  border-radius: var(--border-radius);
  border: 1px solid rgba(255, 255, 255, 0.03);
}

.syllabus-number {
  background: rgba(0, 255, 102, 0.1);
  color: var(--accent-primary);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.syllabus-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.features-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.85rem;
}

.features-list li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.icon-bullet {
  color: var(--accent-primary);
}

/* === Protected Vault Password Box === */
.protected-download-card {
  background: linear-gradient(135deg, rgba(10, 19, 24, 0.95) 0%, rgba(15, 26, 31, 0.98) 100%);
  border: 1px solid var(--accent-secondary);
  border-radius: var(--border-radius-lg);
  padding: 1.75rem;
  box-shadow: 0 0 25px rgba(0, 229, 255, 0.12);
  position: sticky;
  top: 100px;
}

.gate-header {
  text-align: center;
  margin-bottom: 1.5rem;
}

.gate-icon-wrapper {
  width: 60px;
  height: 60px;
  margin: 0 auto 1rem auto;
  border-radius: 50%;
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid var(--accent-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.lock-icon {
  font-size: 1.75rem;
  color: var(--accent-secondary);
}

.unlocked-icon {
  font-size: 1.75rem;
  color: var(--accent-primary);
}

.gate-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.gate-subtitle {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.input-group-cyber {
  position: relative;
  margin-bottom: 1rem;
}

.input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

[dir="rtl"] .input-icon {
  left: auto;
  right: 14px;
}

.input-group-cyber input {
  width: 100%;
  padding: 0.85rem 2.8rem 0.85rem 2.6rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: 0.95rem;
  transition: var(--transition);
}

[dir="rtl"] .input-group-cyber input {
  padding: 0.85rem 2.6rem 0.85rem 2.8rem;
}

.input-group-cyber input:focus {
  outline: none;
  border-color: var(--accent-secondary);
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.25);
}

.btn-toggle-pass {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
}

[dir="rtl"] .btn-toggle-pass {
  right: auto;
  left: 12px;
}

.unlock-alert {
  padding: 0.6rem 0.85rem;
  border-radius: var(--border-radius);
  font-size: 0.82rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.alert-error {
  background: rgba(255, 23, 68, 0.15);
  border: 1px solid rgba(255, 23, 68, 0.4);
  color: var(--accent-danger);
}

.btn-unlock-cyber {
  width: 100%;
  padding: 0.85rem;
  background: linear-gradient(135deg, #00e5ff 0%, #00ff66 100%);
  border: none;
  color: #05080a;
  font-weight: 700;
  font-size: 1rem;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-unlock-cyber:hover {
  box-shadow: 0 0 20px rgba(0, 255, 102, 0.5);
  transform: translateY(-2px);
}

.pass-hint {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
}

/* Unlocked Download Area */
.unlocked-content {
  animation: fadeIn 0.4s ease forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.unlocked-badge {
  background: rgba(0, 255, 102, 0.15);
  border: 1px solid var(--accent-primary);
  color: var(--accent-primary);
  padding: 0.5rem;
  border-radius: var(--border-radius);
  text-align: center;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
}

.zip-password-box {
  background: var(--bg-primary);
  border: 1px dashed var(--border-color);
  padding: 0.85rem;
  border-radius: var(--border-radius);
  margin-bottom: 1.25rem;
}

.zip-pass-label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.zip-pass-value {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.03);
  padding: 0.4rem 0.75rem;
  border-radius: 4px;
}

.zip-pass-value code {
  font-family: var(--font-mono);
  color: var(--accent-secondary);
  font-weight: 600;
}

.btn-copy {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 2px 6px;
}

.btn-copy:hover {
  color: var(--accent-primary);
}

.download-servers-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.list-title {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

.download-link-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.link-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.server-badge {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent-secondary);
  text-transform: uppercase;
}

.link-filename {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
}

.link-size {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.btn-download-direct {
  background: rgba(0, 255, 102, 0.1);
  border: 1px solid var(--accent-primary);
  color: var(--accent-primary);
  padding: 0.5rem 0.85rem;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 700;
  text-align: center;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
}

.btn-download-direct:hover {
  background: var(--accent-primary);
  color: #05080a;
  box-shadow: 0 0 12px rgba(0, 255, 102, 0.4);
}

.shake-anim {
  animation: shake 0.4s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

@media (max-width: 992px) {
  .course-hero-grid {
    grid-template-columns: 1fr;
  }
  .course-content-layout {
    grid-template-columns: 1fr;
  }
  .protected-download-card {
    position: static;
  }
}