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

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #1a1a1a;
  --bg-card-hover: #222222;
  --text-primary: #ffffff;
  --text-secondary: #999999;
  --text-muted: #555555;
  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.3);
  --border: #2a2a2a;
  --gradient: linear-gradient(135deg, #6366f1, #8b5cf6);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 120px 0;
}

.section-title {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 60px;
  letter-spacing: -0.02em;
}

.accent {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.jp {
  font-size: 0.85em;
  opacity: 0.7;
}

/* ========== Buttons ========== */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--gradient);
  color: white;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--accent-glow);
}

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

.btn-outline:hover {
  border-color: var(--accent);
  background: rgba(99, 102, 241, 0.1);
}

/* ========== Navigation ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all 0.3s ease;
  background: transparent;
}

.navbar.scrolled {
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  text-decoration: none;
}

.logo-text {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.3s;
}

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

.nav-cta {
  padding: 10px 24px;
  background: var(--gradient);
  color: white;
  text-decoration: none;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: all 0.3s;
}

.nav-cta:hover {
  box-shadow: 0 4px 20px var(--accent-glow);
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all 0.3s;
}

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

.hero-bg {
  position: absolute;
  inset: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(10, 10, 10, 0.3) 0%,
    rgba(10, 10, 10, 0.6) 50%,
    rgba(10, 10, 10, 0.95) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
}

.hero-date {
  font-size: 1.1rem;
  color: var(--accent-light);
  font-weight: 500;
  margin-bottom: 16px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: fadeInUp 0.8s ease both;
}

.hero-title {
  font-size: clamp(4rem, 12vw, 8rem);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  animation: fadeInUp 0.8s ease 0.1s both;
}

.hero-subtitle {
  font-size: 1.3rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  font-weight: 400;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 60px;
  animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-stats {
  display: flex;
  gap: 48px;
  justify-content: center;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  animation: fadeInUp 0.8s ease 0.6s both;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

/* ========== Schedule ========== */
.schedule {
  background: var(--bg-secondary);
}

.schedule-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 12px;
}

.schedule-day {
  background: var(--bg-card);
  border-radius: 12px;
  padding: 24px 16px;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
  min-height: 280px;
  display: flex;
  flex-direction: column;
}

.schedule-day.inactive {
  opacity: 0.4;
}

.schedule-day.active {
  border-color: var(--accent);
  background: var(--bg-card-hover);
}

.schedule-day.highlight {
  box-shadow: 0 0 30px var(--accent-glow);
}

.day-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.day-date {
  font-size: 1.1rem;
  font-weight: 700;
  margin-top: 4px;
  display: block;
}

.schedule-day.inactive .day-date {
  color: var(--text-muted);
}

.day-event {
  margin-top: auto;
}

.day-event h3 {
  font-size: 1.1rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 12px;
}

.venue-name {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.week-tag {
  display: inline-block;
  margin-top: 16px;
  font-size: 0.65rem;
  color: var(--accent-light);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
}

/* ========== About / Audience ========== */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-map img {
  width: 100%;
  border-radius: 16px;
  border: 1px solid var(--border);
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.audience-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.audience-bar {
  height: 40px;
  background: var(--gradient);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 0 12px;
  width: var(--width);
  min-width: 60px;
  transition: width 1s ease;
}

.audience-pct {
  font-size: 0.85rem;
  font-weight: 700;
  color: white;
}

.audience-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

/* ========== Speakers ========== */
.speakers {
  background: var(--bg-secondary);
}

.speakers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}

.speaker-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  text-align: center;
  transition: all 0.3s ease;
}

.speaker-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.speaker-img {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto 16px;
  border: 2px solid var(--border);
}

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

.speaker-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.speaker-card p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.speakers-more {
  text-align: center;
  margin-top: 48px;
}

.speakers-more p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 1.1rem;
}

/* ========== Venue ========== */
.venue-header {
  margin-bottom: 40px;
}

.venue-header h3 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.venue-header p {
  color: var(--text-secondary);
  max-width: 600px;
  font-size: 1.05rem;
}

.venue-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 300px 200px;
  gap: 16px;
  margin-bottom: 40px;
}

.venue-photo {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.venue-photo.main {
  grid-row: span 2;
}

.venue-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.venue-photo:hover img {
  transform: scale(1.05);
}

.photo-label {
  position: absolute;
  bottom: 16px;
  left: 16px;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(10px);
  padding: 6px 16px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
}

.venue-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  border-top: 1px solid var(--border);
}

.venue-detail h4 {
  font-size: 1.1rem;
  font-weight: 700;
}

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

/* ========== Packages ========== */
.packages {
  background: var(--bg-secondary);
}

.packages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.package-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
  position: relative;
}

.package-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.package-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 40px var(--accent-glow);
}

.package-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient);
  padding: 4px 20px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  white-space: nowrap;
}

.package-header h3 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.package-price {
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}

.package-price span {
  font-size: 0.9rem;
  font-weight: 500;
}

.package-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

.package-features {
  list-style: none;
  margin-bottom: 32px;
  flex-grow: 1;
}

.package-features li {
  padding: 8px 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  position: relative;
  padding-left: 24px;
}

.package-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent-light);
  font-weight: 700;
}

.package-card .btn {
  text-align: center;
  width: 100%;
}

/* ========== Summits ========== */
.summits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.summit-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px 32px;
  transition: all 0.3s ease;
}

.summit-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.summit-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
}

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

/* ========== Contact ========== */
.contact {
  background: var(--bg-secondary);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-info h3 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.contact-info > p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 40px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-light);
  font-weight: 600;
}

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

.contact-form input,
.contact-form select,
.contact-form textarea {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.3s;
  outline: none;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--accent);
}

.contact-form select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23999' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}

.contact-form textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form .btn {
  align-self: flex-start;
  font-family: inherit;
}

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

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 40px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 8px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s;
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.85rem;
}

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

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* Scroll animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

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

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .schedule-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .schedule-day:nth-child(1),
  .schedule-day:nth-child(2),
  .schedule-day:nth-child(7) {
    display: none;
  }
  .packages-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .section {
    padding: 80px 0;
  }

  .section-title {
    font-size: 2.2rem;
    margin-bottom: 40px;
  }

  .nav-links, .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
  }

  .hero-title {
    font-size: 3.5rem;
  }

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

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

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

  .schedule-day {
    display: flex !important;
    min-height: auto;
  }

  .schedule-day.inactive {
    display: none !important;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .venue-gallery {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }

  .venue-photo.main {
    grid-row: auto;
  }

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

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

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-grid {
    flex-direction: column;
    gap: 24px;
  }

  .footer-links {
    flex-wrap: wrap;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.5rem;
  }

  .stat-number {
    font-size: 1.8rem;
  }

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