/* ============================================
   Claude Code Bootcamp V1 - GitHub Pages
   Theme: Teal/Green - Beginner Friendly
   ============================================ */

/* CSS Variables */
:root {
  --primary: #00b894;
  --primary-dark: #00a381;
  --primary-light: #55efc4;
  --primary-glow: rgba(0, 184, 148, 0.15);
  --secondary: #6c5ce7;
  --secondary-light: #a29bfe;
  --accent: #fdcb6e;
  --accent-dark: #f39c12;
  --dark: #2d3436;
  --dark-soft: #636e72;
  --light: #dfe6e9;
  --lighter: #f8f9fa;
  --white: #ffffff;
  --bg-gradient: linear-gradient(135deg, #0d2818 0%, #1a3a2a 50%, #0d2818 100%);
  --card-bg: rgba(255, 255, 255, 0.03);
  --card-border: rgba(0, 184, 148, 0.15);
  --text-primary: #f0f0f0;
  --text-secondary: #b0b8bc;
  --text-muted: #8a9499;
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.3);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 30px rgba(0, 184, 148, 0.2);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background: var(--bg-gradient);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Background pattern */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    radial-gradient(ellipse at 20% 50%, rgba(0, 184, 148, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(108, 92, 231, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(0, 184, 148, 0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--white);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

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

img {
  max-width: 100%;
  height: auto;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(13, 40, 24, 0.8);
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  padding: 10px 0;
  background: rgba(13, 40, 24, 0.95);
  border-bottom: 1px solid var(--card-border);
  box-shadow: var(--shadow-md);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--white);
}

.nav-brand .brand-icon {
  font-size: 1.5rem;
}

.nav-brand .brand-tag {
  display: inline-block;
  background: var(--primary);
  color: var(--white);
  font-size: 0.65rem;
  padding: 2px 8px;
  border-radius: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
  border-radius: 2px;
}

.nav-links a:hover {
  color: var(--white);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: var(--white) !important;
  padding: 8px 20px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.85rem;
  transition: var(--transition);
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(0, 184, 148, 0.4);
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
  background: none;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
  border-radius: 2px;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -30%;
  width: 80%;
  height: 150%;
  background: radial-gradient(ellipse, rgba(0, 184, 148, 0.1) 0%, transparent 70%);
  animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
  0% { transform: translate(0, 0) scale(1); opacity: 0.5; }
  100% { transform: translate(10%, 5%) scale(1.1); opacity: 0.8; }
}

.hero-content {
  text-align: center;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 184, 148, 0.1);
  border: 1px solid rgba(0, 184, 148, 0.3);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--primary-light);
  margin-bottom: 32px;
  font-weight: 600;
  animation: fadeInUp 0.8s ease-out;
}

.hero-badge i {
  font-size: 0.8rem;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  margin-bottom: 24px;
  line-height: 1.1;
  animation: fadeInUp 0.8s ease-out 0.1s both;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 50%, var(--secondary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto 40px;
  line-height: 1.7;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease-out 0.3s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(0, 184, 148, 0.3);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 184, 148, 0.4);
  color: var(--white);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--card-border);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary-light);
  transform: translateY(-2px);
  background: rgba(0, 184, 148, 0.05);
}

/* Hero Stats */
.hero-stats {
  display: flex;
  gap: 48px;
  justify-content: center;
  margin-top: 64px;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--primary-light);
  font-family: var(--font-mono);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

/* ============================================
   Section Styles
   ============================================ */
.section {
  padding: 100px 0;
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   Cards
   ============================================ */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
}

.card-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  font-size: 1.5rem;
  margin-bottom: 20px;
  background: var(--primary-glow);
  color: var(--primary-light);
}

.card h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ============================================
   What You'll Build
   ============================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

/* ============================================
   Curriculum / Timeline
   ============================================ */
.curriculum-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.week-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.week-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary-light));
  border-radius: 4px 4px 0 0;
}

.week-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
}

.week-label {
  display: inline-block;
  background: var(--primary-glow);
  color: var(--primary-light);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.week-card h3 {
  font-size: 1.15rem;
  margin-bottom: 16px;
}

.week-card ul {
  list-style: none;
  padding: 0;
}

.week-card li {
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding: 6px 0;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.week-card li i {
  color: var(--primary);
  margin-top: 4px;
  flex-shrink: 0;
}

/* ============================================
   Tech Stack
   ============================================ */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
}

.tech-item {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 24px 16px;
  text-align: center;
  transition: var(--transition);
}

.tech-item:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.tech-item i {
  font-size: 2.5rem;
  margin-bottom: 12px;
  color: var(--primary-light);
}

.tech-item .tech-name {
  display: block;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--white);
  margin-bottom: 4px;
}

.tech-item .tech-role {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ============================================
   Prerequisites
   ============================================ */
.prereq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.prereq-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.prereq-card h3 {
  font-size: 1.1rem;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.prereq-list {
  list-style: none;
  padding: 0;
}

.prereq-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.prereq-list li i {
  color: var(--primary);
  width: 18px;
  text-align: center;
}

/* ============================================
   Learning Path
   ============================================ */
.path-container {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.path-line {
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary), var(--secondary-light), var(--primary));
  opacity: 0.3;
}

.path-step {
  display: flex;
  gap: 32px;
  margin-bottom: 40px;
  position: relative;
}

.path-marker {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--primary-glow);
  border: 2px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--primary-light);
  flex-shrink: 0;
  z-index: 2;
}

.path-content {
  padding-top: 6px;
}

.path-content h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.path-content p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ============================================
   FAQ Accordion
   ============================================ */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(0, 184, 148, 0.3);
}

.faq-question {
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 1rem;
  color: var(--white);
  transition: var(--transition);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-family: var(--font-body);
}

.faq-question:hover {
  color: var(--primary-light);
}

.faq-question i {
  transition: var(--transition);
  color: var(--primary);
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease-out, padding 0.3s ease-out;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}

.faq-answer p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ============================================
   Next Level / V2 CTA
   ============================================ */
.next-level {
  background: linear-gradient(135deg, rgba(108, 92, 231, 0.1) 0%, rgba(0, 184, 148, 0.1) 100%);
  border: 1px solid rgba(108, 92, 231, 0.2);
  border-radius: var(--radius-xl);
  padding: 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.next-level::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 60%;
  height: 150%;
  background: radial-gradient(ellipse, rgba(108, 92, 231, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.next-level h2 {
  font-size: 2rem;
  margin-bottom: 16px;
}

.next-level p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 32px;
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 700px;
  margin: 0 auto 40px;
}

.comparison-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: left;
}

.comparison-card.current {
  border-color: var(--primary);
}

.comparison-card.next {
  border-color: var(--secondary);
}

.comparison-card .comp-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.comparison-card.current .comp-badge {
  background: var(--primary-glow);
  color: var(--primary-light);
}

.comparison-card.next .comp-badge {
  background: rgba(108, 92, 231, 0.15);
  color: var(--secondary-light);
}

.comparison-card h3 {
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.comparison-card ul {
  list-style: none;
  padding: 0;
}

.comparison-card li {
  color: var(--text-secondary);
  font-size: 0.85rem;
  padding: 4px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.comparison-card li i {
  font-size: 0.7rem;
}

.comparison-card.current li i {
  color: var(--primary);
}

.comparison-card.next li i {
  color: var(--secondary-light);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  padding: 60px 0 30px;
  border-top: 1px solid var(--card-border);
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
}

.footer-col li {
  margin-bottom: 8px;
}

.footer-col a {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--primary-light);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255,255,255,0.05);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.social-links {
  display: flex;
  gap: 16px;
}

.social-links a {
  color: var(--text-muted);
  font-size: 1.1rem;
  transition: var(--transition);
}

.social-links a:hover {
  color: var(--primary-light);
  transform: translateY(-2px);
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Counter animation */
.counting {
  font-variant-numeric: tabular-nums;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 968px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(13, 40, 24, 0.98);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 24px;
    backdrop-filter: blur(20px);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links a {
    font-size: 1.2rem;
  }

  .nav-toggle {
    display: flex;
    z-index: 1001;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero-stats {
    gap: 24px;
    flex-wrap: wrap;
  }

  .stat-number {
    font-size: 2rem;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }

  .comparison-grid {
    grid-template-columns: 1fr;
  }

  .next-level {
    padding: 40px 24px;
  }
}

@media (max-width: 640px) {
  .section {
    padding: 60px 0;
  }

  .hero {
    padding: 100px 0 60px;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .curriculum-grid {
    grid-template-columns: 1fr;
  }

  .tech-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .path-step {
    gap: 20px;
  }

  .path-marker {
    width: 40px;
    height: 40px;
    font-size: 0.9rem;
  }

  .path-line {
    left: 19px;
  }
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 4px;
}

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