/* ============================================
   Modern Professional Portfolio Design
   ============================================ */

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

:root {
  /* Color Palette - Professional & Modern */
  --primary: #1a1a2e;
  --secondary: #16213e;
  --accent: #0f3460;
  --accent-light: #533483;
  --highlight: #e94560;
  --text-primary: #ffffff;
  --text-secondary: #b8b8b8;
  --text-muted: #8a8a8a;
  --border: rgba(255, 255, 255, 0.1);
  --card-bg: rgba(255, 255, 255, 0.05);
  --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.4);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  background: var(--primary);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

a {
  color: var(--highlight);
  text-decoration: none;
  transition: all 0.3s ease;
}

a:hover {
  color: #ff6b7d;
}

/* ============================================
   Layout Components
   ============================================ */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

/* ============================================
   Header & Navigation
   ============================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(26, 26, 46, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
  transition: all 0.3s ease;
}

.site-header.scrolled {
  padding: 0.75rem 0;
  box-shadow: var(--shadow-md);
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-logo {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: var(--gradient-1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
  color: white;
  flex-shrink: 0;
}

.brand-info h1 {
  font-size: 1.25rem;
  margin: 0;
  font-weight: 700;
}

.brand-info p {
  font-size: 0.875rem;
  margin: 0;
  color: var(--text-muted);
}

.site-nav {
  display: flex;
  gap: 0.5rem;
  list-style: none;
  align-items: center;
}

.site-nav a {
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  color: var(--text-secondary);
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.site-nav a.active::after {
  content: '';
  position: absolute;
  bottom: 0.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--highlight);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 0 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(102, 126, 234, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  z-index: -1;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(118, 75, 162, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  z-index: -1;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-text {
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(233, 69, 96, 0.1);
  border: 1px solid rgba(233, 69, 96, 0.3);
  border-radius: 50px;
  font-size: 0.875rem;
  color: var(--highlight);
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #ffffff 0%, #b8b8b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 600px;
}

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

.hero-visual {
  position: relative;
  z-index: 1;
}

.hero-image-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  position: relative;
}

.hero-image-card {
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  aspect-ratio: 4/5;
  box-shadow: var(--shadow-xl);
  transition: transform 0.3s ease;
}

.hero-image-card:hover {
  transform: translateY(-8px);
}

.hero-image-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  background: rgba(255, 255, 255, 0.05);
}

.hero-image-card:first-child {
  margin-top: 2rem;
}

.hero-image-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.3) 100%);
  pointer-events: none;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  min-height: 48px;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-1);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  border: 1px solid var(--border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

/* ============================================
   Stats Section
   ============================================ */

.stats-section {
  padding: 4rem 0;
  background: rgba(255, 255, 255, 0.02);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

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

.stat-number {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ============================================
   Content Sections
   ============================================ */

.content-section {
  padding: 5rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(102, 126, 234, 0.1);
  border: 1px solid rgba(102, 126, 234, 0.3);
  border-radius: 50px;
  font-size: 0.875rem;
  color: #667eea;
  margin-bottom: 1rem;
  font-weight: 500;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1rem;
}

.section-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

/* ============================================
   Cards
   ============================================ */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2rem;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-1);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(102, 126, 234, 0.3);
}

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

.card-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.card-content {
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ============================================
   Video Section
   ============================================ */

.video-section {
  padding: 5rem 0;
  background: rgba(255, 255, 255, 0.02);
}

.video-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.video-content h2 {
  margin-bottom: 1rem;
}

.video-content p {
  font-size: 1.125rem;
  margin-bottom: 2rem;
}

.video-preview {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 16/9;
  box-shadow: var(--shadow-xl);
  cursor: pointer;
  transition: transform 0.3s ease;
}

.video-preview:hover {
  transform: scale(1.02);
}

.video-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-play-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  background: rgba(0, 0, 0, 0.7);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  z-index: 2;
}

.video-preview:hover .video-play-button {
  background: rgba(233, 69, 96, 0.9);
  transform: translate(-50%, -50%) scale(1.1);
}

.video-play-button svg {
  width: 32px;
  height: 32px;
  fill: white;
  margin-left: 4px;
}

/* ============================================
   Footer
   ============================================ */

.site-footer {
  padding: 3rem 0;
  border-top: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-text {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer-links {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: var(--highlight);
}

/* ============================================
   Page Specific Styles
   ============================================ */

.page-header {
  padding: 8rem 0 4rem;
  text-align: center;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--border);
}

.page-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: 1rem;
}

.page-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

.timeline {
  max-width: 900px;
  margin: 0 auto;
  padding: 4rem 0;
  position: relative;
}

.timeline-item {
  display: flex;
  gap: 2rem;
  margin-bottom: 3rem;
  position: relative;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: -3rem;
  width: 2px;
  background: var(--gradient-1);
}

.timeline-year {
  min-width: 100px;
  font-weight: 700;
  color: var(--highlight);
  font-size: 1.125rem;
}

.timeline-content {
  flex: 1;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  backdrop-filter: blur(10px);
}

.timeline-content h3 {
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.timeline-content p {
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    gap: 1rem;
  }

  .site-nav {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
  }

  .site-nav a {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
  }

  .hero {
    padding: 6rem 0 3rem;
    min-height: auto;
  }

  .hero-content {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .hero-image-grid {
    grid-template-columns: 1fr;
  }

  .hero-image-card:first-child {
    margin-top: 0;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

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

  .video-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .timeline-item {
    flex-direction: column;
    gap: 1rem;
  }

  .timeline-item::before {
    display: none;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .section {
    padding: 3rem 0;
  }

  .content-section {
    padding: 3rem 0;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

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

  .hero-title {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.75rem;
  }
}

/* ============================================
   Animations
   ============================================ */

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

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

/* ============================================
   Utility Classes
   ============================================ */

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

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }