:root {
  --color-bg: #050915;
  --color-bg-soft: #0f172a;
  --color-card: #ffffff;
  --color-card-muted: #0d1b33;
  --color-accent: #f97316;
  --color-accent-soft: #fed7aa;
  --color-muted: #94a3b8;
  --color-deep: #1e293b;
  --color-highlight: #e2e8f0;
  --gradient-hero: radial-gradient(circle at top, #1d4ed8, #020617 60%);
  --font-base: "Poppins", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont,
    sans-serif;
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  font-family: var(--font-base);
  background: linear-gradient(160deg, var(--color-bg) 0%, var(--color-bg-soft) 60%);
  color: var(--color-highlight);
  line-height: 1.6;
}

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

a {
  color: inherit;
  text-decoration: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

a.skip-link {
  position: absolute;
  top: -40px;
  left: 1rem;
  background: #fff;
  color: #0f172a;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  z-index: 999;
  text-decoration: none;
  transition: top 0.2s ease;
}

a.skip-link:focus {
  top: 1rem;
}

.hero {
  background: var(--gradient-hero);
  color: #f8fafc;
  padding: 2rem clamp(1rem, 5vw, 4rem) 4rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  position: relative;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.logo {
  font-weight: 600;
  letter-spacing: 0.04em;
}

.nav-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.95rem;
}

.nav-links a {
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  background-color: rgba(255, 255, 255, 0.15);
}

.nav-toggle {
  display: none;
  border: none;
  background: rgba(255, 255, 255, 0.1);
  color: inherit;
  padding: 0.5rem 0.8rem;
  font-size: 1.2rem;
  border-radius: 0.5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: stretch;
}

.hero-content {
  background: rgba(15, 23, 42, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 1.8rem;
  padding: clamp(1.5rem, 4vw, 3rem);
  backdrop-filter: blur(6px);
}

.hero-panel {
  background: rgba(15, 23, 42, 0.75);
  border-radius: 1.8rem;
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  box-shadow: 0 25px 50px rgba(2, 6, 23, 0.5);
}

.hero-panel h2 {
  margin: 0;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
}

.hero-panel ul {
  padding-left: 1.2rem;
  margin: 0;
  color: var(--color-accent-soft);
  line-height: 1.5;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-bottom: 0.6rem;
}

h1,
h2,
h3 {
  color: #f1f5f9;
  line-height: 1.2;
}

.hero-actions {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.hero-stats dt {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
}

.hero-stats dd {
  margin: 0.2rem 0 0;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.button {
  border-radius: 999px;
  padding: 0.85rem 1.8rem;
  font-weight: 600;
  border: 2px solid transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, background-color 0.3s ease;
}

.button.primary {
  background-color: var(--color-accent);
  color: #0f172a;
}

.button.secondary {
  border-color: #f8fafc;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

main {
  background: var(--color-deep);
  padding: clamp(2rem, 6vw, 5rem);
  display: flex;
  flex-direction: column;
  gap: clamp(2rem, 6vw, 4rem);
}

.project-intro {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin-bottom: clamp(2rem, 8vw, 5rem);
  align-items: start;
}

.elevated-card {
  background: rgba(15, 23, 42, 0.45);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border-radius: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 20px 45px rgba(2, 6, 23, 0.4);
}

.intro-highlights {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.highlight {
  background: rgba(15, 23, 42, 0.5);
  padding: 1.5rem;
  border-radius: 1.2rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.pill-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.5rem;
}

.pill-group span {
  background: rgba(249, 115, 22, 0.15);
  color: var(--color-accent);
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  font-size: 0.85rem;
}

.legend-overview {
  background: var(--color-card-muted);
  border-radius: 1.5rem;
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: 0 25px 50px rgba(2, 6, 23, 0.4);
}

.legend-overview__header {
  max-width: 720px;
}

.legend-nav {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
}

.legend-nav a {
  display: block;
  padding: 0.85rem 1rem;
  border-radius: 0.9rem;
  background: rgba(148, 163, 184, 0.1);
  color: var(--color-highlight);
  border: 1px solid transparent;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.legend-nav a.active {
  border-color: var(--color-accent);
  background: rgba(249, 115, 22, 0.15);
  color: #fff;
}

.legend-nav a:hover,
.legend-nav a:focus-visible {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

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

.legend-card {
  background: var(--color-card);
  color: #0f172a;
  border-radius: 2rem;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(240px, 1fr) 1.5fr;
  gap: 0;
  box-shadow: 0 25px 45px rgba(15, 23, 42, 0.35);
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  position: relative;
}

.legend-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.legend-card::before {
  content: "";
  position: absolute;
  top: 1.5rem;
  left: 1.5rem;
  width: 48px;
  height: 4px;
  border-radius: 999px;
  background: var(--color-accent);
}

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

.legend-content {
  padding: clamp(1.5rem, 4vw, 3rem);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.legend-content h2 {
  color: #0f172a;
  margin-top: 0.5rem;
}

.legend-label {
  text-transform: uppercase;
  letter-spacing: 0.4em;
  font-size: 0.75rem;
  color: var(--color-muted);
}

.legend-summary {
  font-size: 1rem;
  color: #1e293b;
}

.legend-history h3 {
  margin-bottom: 0.5rem;
  color: #0f172a;
  text-transform: none;
}

.legend-history p {
  color: #334155;
}

.site-footer {
  text-align: center;
  padding: 2rem 1rem 3rem;
  color: var(--color-muted);
  font-size: 0.9rem;
}

@media (max-width: 960px) {
  .legend-card {
    grid-template-columns: 1fr;
  }

  .legend-media img {
    max-height: 320px;
  }

  .hero-content,
  .hero-panel {
    backdrop-filter: none;
  }
}

@media (max-width: 720px) {
  .nav-links {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.98);
    flex-direction: column;
    padding: 1rem clamp(1rem, 5vw, 2rem);
    display: none;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: inline-flex;
    cursor: pointer;
  }

  .nav-container {
    flex-wrap: wrap;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    animation-duration: 0s !important;
  }
}