:root {
  --bg-deep: #0a0a0a;
  --bg-surface: #111111;
  --bg-panel: rgba(18, 18, 20, 0.72);
  --border-glass: rgba(255, 69, 0, 0.15);
  --crimson: #DC143C;
  --crimson-deep: #8B0000;
  --orange: #FF4500;
  --orange-glow: #FF8C00;
  --text-primary: #f0f0f0;
  --text-secondary: #a0a0a0;
  --text-muted: #666666;
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SFMono-Regular', 'Menlo', 'Monaco', 'Consolas', 'Liberation Mono', 'Courier New', monospace;
  --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Typography */
h1,
h2,
h3 {
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

h1 {
  font-size: clamp(2.6rem, 6vw, 5rem);
}

h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
}

h3 {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
}

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

.container {
  width: 92%;
  max-width: 1200px;
  margin-inline: auto;
  padding-block: 6rem;
}

/* Header & Navigation */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: linear-gradient(to bottom, rgba(10, 10, 10, 0.92) 0%, rgba(10, 10, 10, 0) 100%);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255, 69, 0, 0.08);
  transition: background var(--transition-base), border-color var(--transition-base);
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 4%;
  max-width: 1400px;
  margin-inline: auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.logo-icon {
  display: block;
  width: 24px;
  height: 24px;
  background: conic-gradient(from 180deg, var(--orange), var(--crimson));
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}

.logo-icon::after {
  content: '';
  position: absolute;
  inset: 4px;
  background: var(--bg-deep);
  clip-path: polygon(50% 0%, 100% 100%, 0% 100%);
}

.logo-accent {
  color: var(--orange);
  font-weight: 300;
}

.nav-list {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-list a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  position: relative;
  padding-block: 0.25rem;
  transition: color var(--transition-base);
}

.nav-list a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--orange);
  transition: width var(--transition-base);
}

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

.nav-list a:hover::after {
  width: 100%;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 101;
}

.hamburger,
.hamburger::before,
.hamburger::after {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  position: relative;
  transition: all 0.3s ease;
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
}

.hamburger::before {
  top: -7px;
}

.hamburger::after {
  top: 7px;
}

/* Hero Command Center */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  isolation: isolate;
  background: radial-gradient(ellipse at center, #141010 0%, var(--bg-deep) 70%);
}

#seismic-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0.45;
}

.smoke-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(circle at 20% 80%, rgba(255, 69, 0, 0.18) 0%, transparent 55%),
    radial-gradient(circle at 80% 20%, rgba(220, 20, 60, 0.12) 0%, transparent 55%);
  animation: smoke-drift 20s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes smoke-drift {
  0% {
    transform: translateX(-2%) scale(1);
    opacity: 0.4;
  }
  100% {
    transform: translateX(2%) scale(1.1);
    opacity: 0.65;
  }
}

.topographic-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    radial-gradient(circle at 50% 50%, transparent 20%, rgba(255, 69, 0, 0.035) 21%, transparent 22%),
    radial-gradient(circle at 30% 70%, transparent 30%, rgba(220, 20, 60, 0.03) 31%, transparent 32%),
    radial-gradient(circle at 70% 30%, transparent 25%, rgba(255, 140, 0, 0.03) 26%, transparent 27%);
  background-size: 220px 220px, 340px 340px, 280px 280px;
  opacity: 0.7;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  max-width: 920px;
  padding: 2rem;
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--orange-glow);
  letter-spacing: 0.12em;
  border: 1px solid rgba(255, 140, 0, 0.25);
  padding: 0.4rem 0.9rem;
  border-radius: 100px;
  background: rgba(255, 69, 0, 0.06);
  backdrop-filter: blur(4px);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange);
  animation: pulse 2.5s infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(255, 69, 0, 0.7);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(255, 69, 0, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(255, 69, 0, 0);
  }
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.35rem);
  color: var(--text-secondary);
  max-width: 620px;
  margin-inline: auto;
  margin-block: 1.5rem 2.5rem;
  line-height: 1.55;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1.05rem 2.6rem;
  background: linear-gradient(135deg, var(--orange), var(--crimson));
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: 4px;
  border: none;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  font-family: var(--font-sans);
}

.cta-button::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.25), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 40px -10px rgba(255, 69, 0, 0.55);
}

.cta-button:hover::before {
  opacity: 1;
}

/* Hero Dashboard */
.hero-dashboard {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

.dash-panel {
  background: var(--bg-panel);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  padding: 1rem 1.6rem;
  border-radius: 6px;
  min-width: 150px;
  text-align: center;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

.dash-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text-muted);
  letter-spacing: 0.16em;
  margin-bottom: 0.4rem;
}

.dash-value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--orange-glow);
  font-weight: 600;
}

.dash-unit {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-left: 0.2rem;
}

/* Sections */
.section-header {
  margin-bottom: 4rem;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--orange);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  border: 1px solid rgba(255, 69, 0, 0.3);
  padding: 0.3rem 0.75rem;
  border-radius: 4px;
}

.section-lead {
  color: var(--text-secondary);
  font-size: 1.15rem;
  max-width: 720px;
  margin-top: 1rem;
  line-height: 1.65;
}

/* Research Mission */
.research {
  position: relative;
  background: linear-gradient(to bottom, var(--bg-deep), #0f0f0f);
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
  gap: 1.5rem;
}

.research-card {
  background: var(--bg-panel);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  padding: 2.25rem;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.research-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(to right, var(--orange), var(--crimson));
  opacity: 0.45;
  transition: opacity var(--transition-base);
}

.research-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-glass);
  box-shadow: 0 14px 45px -12px rgba(255, 69, 0, 0.18);
}

.research-card:hover::before {
  opacity: 1;
}

.card-visual {
  width: 48px;
  height: 48px;
  margin-bottom: 1.5rem;
  color: var(--orange);
}

.card-visual svg {
  width: 100%;
  height: 100%;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.research-card h3 {
  margin-bottom: 0.75rem;
  font-size: 1.2rem;
}

.research-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 1.5rem;
}

.card-meta {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.meta-chip {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  background: rgba(255, 69, 0, 0.08);
  color: var(--orange-glow);
  border: 1px solid rgba(255, 69, 0, 0.15);
}

/* Study Tracks */
.tracks {
  background:
    radial-gradient(circle at 50% 0%, rgba(139, 0, 0, 0.1) 0%, transparent 60%),
    var(--bg-deep);
}

.tracks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: 1.5rem;
}

.track-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.01) 100%);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-left: 3px solid var(--crimson);
  border-radius: 0 8px 8px 0;
  padding: 2.25rem;
  transition: all var(--transition-base);
  position: relative;
}

.track-card:hover {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);
  border-left-color: var(--orange);
  transform: translateX(5px);
}

.track-header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1rem;
}

.track-number {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.track-card h3 {
  font-size: 1.15rem;
}

.track-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  line-height: 1.55;
}

.track-stats {
  list-style: none;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 1.25rem;
  display: flex;
  justify-content: space-between;
}

.track-stats li {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.stat-value {
  font-family: var(--font-mono);
  color: var(--orange-glow);
  font-size: 0.95rem;
}

/* Field Observatory */
.observatory {
  background: var(--bg-surface);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--bg-deep);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 8px;
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 50px -15px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(255, 69, 0, 0.12);
}

.project-image {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s ease;
}

.project-card:hover .project-image img {
  transform: scale(1.06);
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 10, 10, 0.92) 0%, transparent 55%);
  display: flex;
  align-items: flex-end;
  padding: 1.1rem;
}

.project-status {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  padding: 0.3rem 0.7rem;
  border-radius: 4px;
  background: rgba(0, 255, 130, 0.08);
  color: #50fa7b;
  border: 1px solid rgba(0, 255, 130, 0.2);
}

.project-status.active {
  animation: status-blink 3s infinite;
}

@keyframes status-blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.55;
  }
}

.project-content {
  padding: 1.6rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.project-content h3 {
  margin-bottom: 1.1rem;
  font-size: 1.15rem;
}

.project-specs {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
  margin-bottom: 1.1rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

@media (min-width: 480px) {
  .project-specs {
    grid-template-columns: 1fr 1fr;
  }
}

.spec-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.25rem;
}

.spec-value {
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.35;
}

.project-content p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.55;
  margin-top: auto;
}

/* Admissions */
.admissions {
  position: relative;
  background: linear-gradient(to bottom, var(--bg-surface), var(--bg-deep));
}

.admissions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
  gap: 1.5rem;
}

.glass-panel {
  background: var(--bg-panel);
  backdrop-filter: blur(18px);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 8px;
  padding: 2.5rem;
}

.contact-card h3 {
  margin-bottom: 2rem;
  font-size: 1.25rem;
  color: var(--orange-glow);
}

.contact-info {
  font-style: normal;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

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

.contact-item a {
  color: var(--text-primary);
  text-decoration: none;
  font-size: 1.05rem;
  transition: color var(--transition-base);
  word-break: break-word;
}

.contact-item a:hover {
  color: var(--orange);
}

.contact-item p {
  color: var(--text-secondary);
  line-height: 1.55;
  font-size: 1.05rem;
}

.location-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  min-height: 280px;
}

.topo-grid {
  position: relative;
  width: 220px;
  height: 220px;
}

.topo-ring {
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 69, 0, 0.15);
  border-radius: 50%;
  animation: topo-expand 7s ease-out infinite;
}

.topo-ring:nth-child(1) {
  animation-delay: 0s;
}

.topo-ring:nth-child(2) {
  animation-delay: 2.33s;
}

.topo-ring:nth-child(3) {
  animation-delay: 4.66s;
}

@keyframes topo-expand {
  0% {
    transform: scale(0.15);
    opacity: 0;
    border-color: rgba(255, 69, 0, 0.55);
  }
  40% {
    opacity: 1;
  }
  100% {
    transform: scale(1.25);
    opacity: 0;
    border-color: rgba(255, 69, 0, 0.04);
  }
}

.coordinate-cross {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.coord-text {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--orange-glow);
  letter-spacing: 0.06em;
  background: rgba(10, 10, 10, 0.85);
  padding: 0.5rem 1rem;
  border-radius: 4px;
  border: 1px solid rgba(255, 69, 0, 0.25);
}

/* Footer */
.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding: 2.5rem 0;
  text-align: center;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(35px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }

  .nav-list {
    position: fixed;
    inset: 0 0 0 28%;
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(24px);
    flex-direction: column;
    align-items: flex-start;
    padding: 6rem 2rem 2rem;
    gap: 1.75rem;
    transform: translateX(105%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-left: 1px solid rgba(255, 69, 0, 0.12);
    z-index: 100;
  }

  .nav-list.open {
    transform: translateX(0);
  }

  .hero-dashboard {
    display: none;
  }

  .container {
    padding-block: 4rem;
  }

  .section-header {
    margin-bottom: 2.5rem;
  }

  .contact-card,
  .location-visual {
    padding: 1.75rem;
  }
}