@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700&family=Sohne:wght@400;500;600&display=swap');

:root {
  --primary: #FF6B35;
  --accent: #004E89;
  --bg: #0F1419;
  --surface: #1A1F2E;
  --text: #E8EAED;
  --muted: #6B7280;
  --border: #2D3748;
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;
  
  --font-display: 'Outfit', sans-serif;
  --font-body: 'Sohne', sans-serif;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
  
  --transition-fast: 150ms ease-out;
  --transition-base: 250ms ease-out;
  --transition-slow: 350ms ease-out;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 1rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: 3.5rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2.5rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.875rem;
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1rem;
  font-weight: 600;
}

p {
  margin-bottom: var(--spacing-md);
}

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

a:hover {
  color: #FF8555;
}

/* Layout */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-2xl) 0;
}

.section.hero {
  padding: var(--spacing-2xl) 0;
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.1) 0%, rgba(0, 78, 137, 0.1) 100%);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.flex {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Navigation */
.nav {
  position: sticky;
  top: 0;
  background-color: rgba(15, 20, 25, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  padding: var(--spacing-md) 0;
}

.nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.nav-brand span {
  color: var(--primary);
}

.nav-menu {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav-menu a {
  font-size: 0.95rem;
  color: var(--text);
  font-weight: 500;
  border-bottom: 2px solid transparent;
  padding-bottom: 0.25rem;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: all var(--transition-base);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary);
  color: white;
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

.btn-primary:hover {
  background-color: #FF8555;
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
  transform: translateY(-2px);
}

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

.btn-secondary:hover {
  background-color: rgba(255, 107, 53, 0.1);
  border-color: #FF8555;
  color: #FF8555;
}

.btn-outline {
  background-color: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1.125rem;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Cards */
.card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--primary);
  box-shadow: 0 0 20px rgba(255, 107, 53, 0.2);
  transform: translateY(-4px);
}

.card-header {
  margin-bottom: var(--spacing-md);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.card-subtitle {
  color: var(--muted);
  font-size: 0.9rem;
}

.card-body {
  margin-bottom: var(--spacing-md);
}

.card-footer {
  border-top: 1px solid var(--border);
  padding-top: var(--spacing-md);
  margin-top: var(--spacing-md);
}

/* Video Player */
.video-player {
  position: relative;
  background-color: #000;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--spacing-lg);
  box-shadow: var(--shadow-lg);
}

.video-player-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
}

.video-player-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-player-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.2) 0%, rgba(0, 78, 137, 0.2) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: rgba(255, 255, 255, 0.2);
}

.video-info {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border);
}

.video-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

.video-meta {
  display: flex;
  gap: var(--spacing-lg);
  color: var(--muted);
  font-size: 0.9rem;
}

.video-stats {
  display: flex;
  gap: var(--spacing-md);
}

.video-stat {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.video-stat-value {
  color: var(--text);
  font-weight: 600;
}

.video-creator {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.video-creator-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 1.1rem;
}

.video-creator-name {
  font-weight: 600;
}

.video-creator-role {
  color: var(--muted);
  font-size: 0.85rem;
}

/* Badge & Tag */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background-color: rgba(255, 107, 53, 0.15);
  color: var(--primary);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge.badge-accent {
  background-color: rgba(0, 78, 137, 0.15);
  color: var(--accent);
}

.badge.badge-success {
  background-color: rgba(16, 185, 129, 0.15);
  color: var(--success);
}

.tag {
  display: inline-block;
  padding: 0.375rem 0.875rem;
  background-color: var(--border);
  color: var(--text);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  margin-right: var(--spacing-xs);
  margin-bottom: var(--spacing-xs);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.tag:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.tag.tag-active {
  background-color: var(--primary);
  color: white;
}

/* Search Bar */
.search-bar {
  position: relative;
  width: 100%;
}

.search-input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) var(--spacing-lg);
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: all var(--transition-base);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

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

.search-icon {
  position: absolute;
  right: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
}

/* Tab Switcher */
.tab-switcher {
  display: flex;
  gap: var(--spacing-md);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--spacing-lg);
  overflow-x: auto;
}

.tab-switcher-item {
  padding: var(--spacing-md) 0;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  cursor: pointer;
  font-weight: 500;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.tab-switcher-item:hover {
  color: var(--text);
}

.tab-switcher-item.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn var(--transition-base);
}

/* Timeline */
.timeline {
  position: relative;
  padding: var(--spacing-lg) 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  transform: translateX(-50%);
}

.timeline-item {
  margin-bottom: var(--spacing-2xl);
  opacity: 0;
  animation: slideUp var(--transition-slow) ease-out forwards;
}

.timeline-item:nth-child(1) { animation-delay: 100ms; }
.timeline-item:nth-child(2) { animation-delay: 200ms; }
.timeline-item:nth-child(3) { animation-delay: 300ms; }
.timeline-item:nth-child(4) { animation-delay: 400ms; }
.timeline-item:nth-child(5) { animation-delay: 500ms; }

.timeline-item:nth-child(odd) {
  margin-left: 0;
  margin-right: auto;
  width: 48%;
  text-align: right;
  padding-right: var(--spacing-lg);
}

.timeline-item:nth-child(even) {
  margin-left: auto;
  margin-right: 0;
  width: 48%;
  text-align: left;
  padding-left: var(--spacing-lg);
}

.timeline-dot {
  position: absolute;
  left: 50%;
  top: var(--spacing-lg);
  width: 16px;
  height: 16px;
  background-color: var(--primary);
  border: 3px solid var(--bg);
  border-radius: 50%;
  transform: translateX(-50%);
}

.timeline-year {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--spacing-sm);
}

.timeline-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.timeline-text {
  color: var(--muted);
  line-height: 1.8;
}

/* Team Card */
.team-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  transition: all var(--transition-base);
}

.team-card:hover {
  border-color: var(--primary);
  box-shadow: 0 0 20px rgba(255, 107, 53, 0.2);
  transform: translateY(-4px);
}

.team-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  margin: 0 auto var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: white;
  font-weight: 700;
}

.team-name {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
}

.team-role {
  color: var(--primary);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  font-size: 0.9rem;
}

.team-bio {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.team-joined {
  color: var(--muted);
  font-size: 0.8rem;
}

/* Blog Card */
.blog-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.blog-card:hover {
  border-color: var(--primary);
  box-shadow: 0 0 20px rgba(255, 107, 53, 0.2);
  transform: translateY(-4px);
}

.blog-card-header {
  height: 200px;
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.2) 0%, rgba(0, 78, 137, 0.2) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border);
}

.blog-card-icon {
  font-size: 3rem;
  opacity: 0.5;
}

.blog-card-body {
  padding: var(--spacing-lg);
}

.blog-category {
  display: inline-block;
  margin-bottom: var(--spacing-sm);
}

.blog-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
  line-height: 1.4;
}

.blog-excerpt {
  color: var(--muted);
  margin-bottom: var(--spacing-md);
  font-size: 0.9rem;
  line-height: 1.6;
}

.blog-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
  padding-top: var(--spacing-md);
  color: var(--muted);
  font-size: 0.85rem;
}

.blog-author {
  font-weight: 500;
}

.blog-reading-time {
  color: var(--muted);
}

/* FAQ Item */
.faq-item {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
  transition: all var(--transition-base);
}

.faq-question {
  padding: var(--spacing-lg);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  transition: all var(--transition-base);
  background-color: var(--surface);
}

.faq-question:hover {
  background-color: rgba(255, 107, 53, 0.05);
}

.faq-icon {
  color: var(--primary);
  font-size: 1.25rem;
  transition: transform var(--transition-base);
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
  background-color: rgba(255, 107, 53, 0.02);
}

.faq-item.open .faq-answer {
  max-height: 500px;
  border-top: 1px solid var(--border);
}

.faq-answer-content {
  padding: var(--spacing-lg);
  color: var(--muted);
  line-height: 1.8;
}

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

.footer .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
  margin-bottom: var(--spacing-md);
  font-size: 1rem;
}

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

.footer-section a {
  display: block;
  margin-bottom: var(--spacing-sm);
  color: var(--muted);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

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

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

.footer-bottom-links {
  display: flex;
  gap: var(--spacing-lg);
}

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

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideLeft {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideRight {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(255, 107, 53, 0.3);
  }
  50% {
    box-shadow: 0 0 30px rgba(255, 107, 53, 0.5);
  }
}

.animate-fade-in {
  animation: fadeIn var(--transition-base);
}

.animate-slide-up {
  animation: slideUp var(--transition-slow);
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Utility Classes */
.text-primary {
  color: var(--primary);
}

.text-accent {
  color: var(--accent);
}

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

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

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

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.px-lg { padding: 0 var(--spacing-lg); }
.py-lg { padding: var(--spacing-lg) 0; }

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }

.cursor-pointer { cursor: pointer; }

/* Responsive */
@media (max-width: 1024px) {
  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .timeline::before {
    left: 0;
  }

  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) {
    width: 100%;
    text-align: left;
    padding-left: var(--spacing-xl);
    margin-left: 0;
    margin-right: 0;
  }

  .timeline-dot {
    left: 0;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  h3 {
    font-size: 1.25rem;
  }

  .container {
    padding: 0 var(--spacing-md);
  }

  .section {
    padding: var(--spacing-xl) 0;
  }

  .nav-menu {
    gap: var(--spacing-md);
    font-size: 0.9rem;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .nav-toggle {
    display: block;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }

  .footer-bottom-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .video-meta {
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: flex-start;
  }

  .tab-switcher {
    flex-wrap: nowrap;
    overflow-x: auto;
  }

  .search-input {
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) var(--spacing-md);
  }

  .search-icon {
    right: var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  h3 {
    font-size: 1.1rem;
  }

  .container {
    padding: 0 var(--spacing-md);
  }

  .section {
    padding: var(--spacing-lg) 0;
  }

  .spacing-xs { padding: var(--spacing-xs); }

  .btn {
    padding: 0.625rem 1rem;
    font-size: 0.9rem;
  }

  .nav-brand {
    font-size: 1.25rem;
  }

  .nav-menu {
    gap: var(--spacing-sm);
    font-size: 0.8rem;
  }

  .card {
    padding: var(--spacing-md);
  }

  .team-card {
    padding: var(--spacing-md);
  }

  .team-avatar {
    width: 80px;
    height: 80px;
    font-size: 2rem;
  }

  .blog-card-header {
    height: 150px;
  }

  .blog-card-body {
    padding: var(--spacing-md);
  }

  .faq-question {
    padding: var(--spacing-md);
  }

  .faq-answer-content {
    padding: var(--spacing-md);
  }

  .video-player-wrapper {
    padding-bottom: 75%;
  }

  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) {
    width: 100%;
    padding-left: var(--spacing-lg);
  }

  .timeline-year {
    font-size: 1.25rem;
  }

  .timeline-title {
    font-size: 1.1rem;
  }

  .flex {
    flex-direction: column;
    align-items: flex-start;
  }

  .flex-between {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
  }

  .search-bar {
    margin-bottom: var(--spacing-md);
  }

  .video-stats {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
}