/* CSS Custom Properties */
:root {
  --navy: #1a1a3e;
  --sunset-orange: #ff6b35;
  --gold: #ffc857;
  --deep-purple: #2d1b69;
  --white: #ffffff;
  --dark-bg: #0f0f2e;
  --card-bg: rgba(45, 27, 105, 0.6);
  --border: rgba(255, 200, 87, 0.2);
  
  /* Typography */
  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background: linear-gradient(135deg, var(--navy) 0%, var(--deep-purple) 50%, var(--sunset-orange) 100%);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  background: linear-gradient(180deg, rgba(15, 15, 46, 0.9) 0%, rgba(45, 27, 105, 0.8) 50%, rgba(255, 107, 53, 0.1) 100%);
  padding: 2rem;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 50%, rgba(255, 107, 53, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 80% 80%, rgba(255, 200, 87, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 1000px;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 900;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--gold) 0%, var(--sunset-orange) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 4px 20px rgba(255, 107, 53, 0.3);
  animation: fadeInDown 1s ease-out;
}

.hero .subtitle {
  font-size: 1.5rem;
  color: var(--gold);
  margin-bottom: 1.5rem;
  animation: fadeInUp 1s ease-out 0.2s both;
}

.hero .tagline {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 1.5rem;
  animation: fadeInUp 1s ease-out 0.4s both;
}

.hero .location {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 1rem;
  color: var(--gold);
  margin-bottom: 3rem;
  animation: fadeInUp 1s ease-out 0.6s both;
}

.hero .location::before {
  content: '📍';
  font-size: 1.3rem;
}

.hero .highlight {
  display: inline-block;
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.2) 0%, rgba(255, 200, 87, 0.2) 100%);
  border: 2px solid var(--sunset-orange);
  border-radius: 50px;
  padding: 0.5rem 1.5rem;
  font-size: 0.9rem;
  margin-top: 2rem;
  animation: fadeInUp 1s ease-out 0.8s both;
}

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

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

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

/* Container */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Section Styles */
section {
  padding: 5rem 2rem;
  position: relative;
}

section h2 {
  font-size: 2.5rem;
  margin-bottom: 2rem;
  text-align: center;
  background: linear-gradient(135deg, var(--gold) 0%, var(--sunset-orange) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* About Section */
#about {
  background: linear-gradient(135deg, rgba(26, 26, 62, 0.9) 0%, rgba(45, 27, 105, 0.9) 100%);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.about-text {
  line-height: 1.8;
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.95);
}

.about-text p {
  margin-bottom: 1.5rem;
}

.track-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.track-image {
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  border: 2px solid var(--border);
  aspect-ratio: 3/2;
  background: rgba(255, 200, 87, 0.1);
}

.track-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.track-image:hover img {
  transform: scale(1.05);
  filter: brightness(1.1);
}

/* Sessions Section */
#sessions {
  background: linear-gradient(135deg, rgba(15, 15, 46, 0.8) 0%, rgba(26, 26, 62, 0.9) 100%);
  min-height: 100vh;
}

.sessions-container {
  max-width: 1400px;
  margin: 0 auto;
}

/* Search & Filters */
.search-filters {
  margin-bottom: 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.search-box {
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 1rem 1.5rem;
  font-size: 1rem;
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid var(--border);
  border-radius: 50px;
  color: var(--white);
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.search-box input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.search-box input:focus {
  outline: none;
  border-color: var(--sunset-orange);
  background: rgba(255, 255, 255, 0.15);
  box-shadow: 0 0 20px rgba(255, 107, 53, 0.3);
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.filter-btn {
  padding: 0.75rem 1.5rem;
  background: rgba(255, 200, 87, 0.1);
  border: 2px solid var(--border);
  border-radius: 25px;
  color: var(--white);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.95rem;
  font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--sunset-orange);
  border-color: var(--sunset-orange);
  color: var(--navy);
  transform: translateY(-2px);
  box-shadow: 0 5px 20px rgba(255, 107, 53, 0.3);
}

/* Sessions Grid */
#sessionsGrid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.session-card {
  background: var(--card-bg);
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  backdrop-filter: blur(10px);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
  animation: fadeInUp 0.6s ease-out forwards;
  opacity: 0;
}

.session-card:hover {
  transform: translateY(-8px);
  border-color: var(--sunset-orange);
  box-shadow: 0 10px 40px rgba(255, 107, 53, 0.2);
  background: rgba(45, 27, 105, 0.8);
}

.session-card-header {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.speaker-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--sunset-orange);
  flex-shrink: 0;
}

.speaker-avatar-placeholder {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--sunset-orange), var(--gold));
  flex-shrink: 0;
}

.speaker-info {
  flex: 1;
}

.speaker-name {
  font-size: 0.95rem;
  margin-bottom: 0.3rem;
  color: var(--gold);
}

.speaker-tagline {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.4;
}

.session-title {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  color: var(--white);
  line-height: 1.4;
}

.session-description {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 1.5rem;
  flex-grow: 1;
  line-height: 1.5;
}

.session-footer {
  display: flex;
  gap: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.linkedin-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(255, 107, 53, 0.1);
  border: 1px solid var(--sunset-orange);
  border-radius: 20px;
  color: var(--sunset-orange);
  text-decoration: none;
  transition: var(--transition);
  font-size: 0.85rem;
}

.linkedin-link:hover {
  background: var(--sunset-orange);
  color: var(--navy);
  transform: scale(1.05);
}

.youtube-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(255, 0, 0, 0.15);
  border: 1px solid #ff4444;
  border-radius: 20px;
  color: #ff6666;
  text-decoration: none;
  transition: var(--transition);
  font-size: 0.85rem;
  font-weight: 600;
}

.youtube-link:hover {
  background: #ff4444;
  color: var(--white);
  transform: scale(1.05);
  box-shadow: 0 4px 15px rgba(255, 68, 68, 0.4);
}

.track-badge {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  background: rgba(255, 200, 87, 0.15);
  border: 1px solid var(--gold);
  border-radius: 12px;
  color: var(--gold);
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 0.8rem;
  text-transform: uppercase;
}

.session-card.has-video {
  border-color: rgba(255, 68, 68, 0.3);
}

.session-card.has-video:hover {
  border-color: #ff4444;
  box-shadow: 0 10px 40px rgba(255, 68, 68, 0.15);
}

.no-results {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem;
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.7);
}

/* Media/Links Section */
#media {
  background: linear-gradient(135deg, rgba(45, 27, 105, 0.9) 0%, rgba(26, 26, 62, 0.9) 100%);
  text-align: center;
}

.media-content {
  max-width: 600px;
  margin: 0 auto;
}

.media-logo {
  width: 150px;
  height: 150px;
  margin: 2rem auto;
  border-radius: 10px;
  border: 3px solid var(--border);
  overflow: hidden;
  background: rgba(255, 200, 87, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.media-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 1rem;
}

.media-logo:hover {
  transform: scale(1.05);
  border-color: var(--sunset-orange);
  box-shadow: 0 0 30px rgba(255, 107, 53, 0.3);
}

.media-description {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.cta-button {
  display: inline-block;
  padding: 1rem 2rem;
  background: linear-gradient(135deg, var(--sunset-orange) 0%, var(--gold) 100%);
  color: var(--navy);
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  border: 2px solid transparent;
  cursor: pointer;
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(255, 107, 53, 0.4);
  background: linear-gradient(135deg, var(--gold) 0%, var(--sunset-orange) 100%);
}

/* Footer */
footer {
  background: var(--dark-bg);
  border-top: 2px solid var(--border);
  padding: 2rem;
  text-align: center;
  color: rgba(255, 255, 255, 0.7);
}

footer p {
  margin-bottom: 1rem;
}

.social-links {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  margin-top: 1.5rem;
}

.social-links a {
  color: var(--sunset-orange);
  text-decoration: none;
  transition: var(--transition);
  font-size: 1.1rem;
}

.social-links a:hover {
  color: var(--gold);
  transform: scale(1.2);
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }

  .hero .subtitle {
    font-size: 1.1rem;
  }

  .about-content {
    grid-template-columns: 1fr;
  }

  #sessionsGrid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }

  .filters {
    flex-direction: column;
    align-items: stretch;
  }

  .filter-btn {
    width: 100%;
  }

  #media h2 {
    font-size: 2rem;
  }

  section {
    padding: 3rem 1rem;
  }

  section h2 {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .hero {
    min-height: auto;
    padding: 3rem 1rem;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .hero .subtitle {
    font-size: 0.95rem;
  }

  .hero .tagline {
    font-size: 0.9rem;
  }

  #sessionsGrid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .session-card {
    padding: 1.5rem;
  }

  .search-box input {
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
  }

  .track-images {
    grid-template-columns: 1fr;
  }

  .media-logo {
    width: 120px;
    height: 120px;
  }
}

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

::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.1);
}

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

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