/* India AI Impact Summit 2026 - Styles */

/* CSS Variables */
:root {
  --primary-color: #FF6600;
  --primary-dark: #E55A00;
  --secondary-color: #138808;
  --accent-blue: #000080;
  --text-dark: #1a1a2e;
  --text-light: #666666;
  --background-light: #f8f9fa;
  --background-white: #ffffff;
  --gradient-india: linear-gradient(135deg, #FF6600 0%, #138808 50%, #000080 100%);
  --gradient-hero: linear-gradient(135deg, #1a1a2e 0%, #2d2d44 100%);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--background-light);
}

/* Navigation */
.nav-links {
  display: flex;
  gap: 24px;
}

.nav-links a {
  color: var(--text-dark);
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
  transition: color 0.2s ease;
}

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

.header-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

.mobile-nav {
  display: none;
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  background: var(--background-white);
  padding: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  z-index: 999;
  flex-direction: column;
  gap: 16px;
}

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

.mobile-nav a {
  color: var(--text-dark);
  text-decoration: none;
  font-weight: 500;
  padding: 8px 0;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Sections */
.section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  margin: 16px 0;
  color: var(--text-dark);
}

.section-subtitle {
  font-size: 18px;
  color: var(--text-light);
  max-width: 700px;
  margin: 0 auto;
}

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

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-hero);
  z-index: -2;
}

.hero-background::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.3) 100%);
}

.hero-content {
  text-align: center;
  color: white;
  z-index: 1;
  padding: 40px 24px;
}

.hero-badge {
  margin-bottom: 24px;
}

.hero-title {
  font-size: 56px;
  font-weight: 800;
  margin-bottom: 16px;
  background: var(--gradient-india);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-size: 28px;
  font-weight: 600;
  font-style: italic;
  margin-bottom: 8px;
  color: #FFE600;
}

.hero-tagline-translation {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 32px;
}

.hero-details {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-bottom: 40px;
}

.hero-detail {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
}

/* Countdown */
.countdown {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 40px;
}

.countdown-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  padding: 20px 28px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.countdown-value {
  font-size: 48px;
  font-weight: 700;
  color: #FFE600;
}

.countdown-label {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(255, 255, 255, 0.7);
}

.countdown-text {
  font-size: 32px;
  font-weight: 700;
  color: #FFE600;
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 16px;
}

/* About Section */
.about-section {
  background: var(--background-white);
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.pillar-card {
  text-align: center;
  padding: 32px;
}

.pillar-card h3 {
  margin-top: 16px;
  font-size: 24px;
}

.pillar-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}

.people-icon {
  background: linear-gradient(135deg, #FF6600 0%, #FF8533 100%);
  color: white;
}

.planet-icon {
  background: linear-gradient(135deg, #138808 0%, #1AA50A 100%);
  color: white;
}

.progress-icon {
  background: linear-gradient(135deg, #000080 0%, #0000B3 100%);
  color: white;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  background: var(--gradient-hero);
  padding: 48px;
  border-radius: 16px;
}

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

.stat-value {
  display: block;
  font-size: 48px;
  font-weight: 700;
  color: #FFE600;
}

.stat-label {
  font-size: 16px;
  opacity: 0.8;
}

/* Agenda Section */
.agenda-section {
  background: var(--background-light);
}

.agenda-day-header {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}

.agenda-date {
  font-size: 14px;
  color: var(--primary-color);
  font-weight: 600;
}

.agenda-day-title {
  font-size: 18px;
  font-weight: 600;
}

.agenda-events {
  padding: 16px 0;
}

.agenda-event {
  display: flex;
  gap: 24px;
  padding: 12px 0;
  border-bottom: 1px solid #eee;
}

.agenda-event:last-child {
  border-bottom: none;
}

.event-time {
  min-width: 100px;
  font-weight: 600;
  color: var(--primary-color);
}

.event-title {
  color: var(--text-dark);
}

/* Speakers Section */
.speakers-section {
  background: var(--background-white);
}

.speakers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.speaker-card {
  text-align: center;
  padding: 24px;
}

.speaker-avatar {
  margin-bottom: 16px;
}

.speaker-name {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 4px;
}

.speaker-role {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 8px;
}

.speaker-topic {
  font-size: 13px;
  color: var(--primary-color);
  font-weight: 500;
}

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

.speakers-cta p {
  margin-bottom: 16px;
  color: var(--text-light);
}

/* Registration Section */
.register-section {
  background: var(--gradient-hero);
  color: white;
}

.register-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.register-info .section-title {
  color: white;
}

.register-info .section-subtitle {
  color: rgba(255, 255, 255, 0.8);
}

.register-features {
  margin-top: 32px;
}

.register-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  color: rgba(255, 255, 255, 0.9);
}

.register-form-container motif-card {
  background: white;
}

.register-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* News Section */
.news-section {
  background: var(--background-light);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card h4 {
  margin: 12px 0 8px;
  font-size: 18px;
}

.news-card p {
  color: var(--text-light);
  font-size: 14px;
  margin-bottom: 12px;
}

.news-date {
  font-size: 12px;
  color: var(--text-light);
}

/* Sponsors Section */
.sponsors-section {
  background: var(--background-white);
}

.sponsors-grid {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.sponsor-tier h4 {
  text-align: center;
  margin-bottom: 24px;
  color: var(--text-light);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.sponsor-logos {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 32px;
}

.sponsor-logo {
  padding: 24px 32px;
  background: var(--background-light);
  border-radius: 8px;
  font-weight: 600;
  color: var(--text-dark);
}

/* Gallery Section */
.gallery-section {
  background: var(--background-light);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(2, 200px);
  gap: 16px;
}

.gallery-item {
  background: var(--background-white);
  border-radius: 12px;
  overflow: hidden;
}

.gallery-item.large {
  grid-column: span 2;
  grid-row: span 2;
}

.gallery-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #e0e0e0 0%, #f0f0f0 100%);
  color: var(--text-light);
  gap: 12px;
}

/* Livestream Section */
.livestream-section {
  background: var(--background-white);
}

.livestream-container {
  max-width: 900px;
  margin: 0 auto;
}

.livestream-placeholder {
  aspect-ratio: 16/9;
  background: var(--gradient-hero);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: white;
  gap: 16px;
}

.livestream-placeholder h3 {
  font-size: 24px;
}

.livestream-placeholder p {
  opacity: 0.7;
  margin-bottom: 8px;
}

/* FAQ Section */
.faq-section {
  background: var(--background-light);
}

.faq-content {
  max-width: 800px;
  margin: 0 auto;
}

.faq-content p {
  color: var(--text-light);
  line-height: 1.8;
}

/* Contact Section */
.contact-section {
  background: var(--background-white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info h2 {
  font-size: 32px;
  margin-bottom: 8px;
}

.contact-info > p {
  color: var(--text-light);
  margin-bottom: 24px;
}

.contact-details {
  margin-bottom: 24px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.social-links {
  display: flex;
  gap: 12px;
}

.contact-map {
  background: var(--background-light);
  border-radius: 12px;
  overflow: hidden;
}

.map-placeholder {
  height: 100%;
  min-height: 300px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  gap: 12px;
}

/* Footer */
.footer-content {
  padding: 40px 0 24px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  margin-bottom: 40px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-logo {
  width: 60px;
}

.footer-summit-info h4 {
  font-size: 16px;
  margin-bottom: 4px;
}

.footer-summit-info p {
  font-size: 13px;
  color: var(--text-light);
}

.footer-links {
  display: flex;
  gap: 64px;
}

.footer-column h5 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-column a {
  display: block;
  color: var(--text-light);
  text-decoration: none;
  font-size: 14px;
  margin-bottom: 8px;
}

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

.footer-bottom {
  border-top: 1px solid #eee;
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: var(--text-light);
}

.footer-bottom p {
  margin-bottom: 4px;
}

/* Animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
  .pillars-grid,
  .speakers-grid,
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .register-content,
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .gallery-item.large {
    grid-column: span 2;
    grid-row: span 1;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .hero-title {
    font-size: 36px;
  }
  
  .hero-tagline {
    font-size: 20px;
  }
  
  .hero-details {
    flex-direction: column;
    gap: 16px;
  }
  
  .countdown {
    flex-wrap: wrap;
  }
  
  .countdown-item {
    padding: 16px 20px;
  }
  
  .countdown-value {
    font-size: 32px;
  }
  
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  
  .section-title {
    font-size: 28px;
  }
  
  .pillars-grid,
  .speakers-grid,
  .news-grid,
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  
  .gallery-item.large {
    grid-column: span 1;
  }
  
  .footer-top {
    flex-direction: column;
    gap: 32px;
  }
  
  .footer-links {
    flex-direction: column;
    gap: 24px;
  }
}

/* Dark Theme Overrides */
.motif-theme-dark {
  --text-dark: #ffffff;
  --text-light: #a0a0a0;
  --background-light: #1a1a2e;
  --background-white: #2d2d44;
}

.motif-theme-dark .nav-links a {
  color: #ffffff;
}

.motif-theme-dark .about-section,
.motif-theme-dark .speakers-section,
.motif-theme-dark .sponsors-section,
.motif-theme-dark .livestream-section,
.motif-theme-dark .contact-section {
  background: var(--background-white);
}

.motif-theme-dark .agenda-section,
.motif-theme-dark .news-section,
.motif-theme-dark .gallery-section,
.motif-theme-dark .faq-section {
  background: var(--background-light);
}

.motif-theme-dark .sponsor-logo {
  background: #3d3d54;
}

.motif-theme-dark .gallery-placeholder {
  background: linear-gradient(135deg, #3d3d54 0%, #4d4d64 100%);
}

.motif-theme-dark .agenda-event {
  border-color: #444;
}

.motif-theme-dark .footer-bottom {
  border-color: #444;
}