/* Strict shared styling for all non-About pages */

:root {
  --bg: #0a0e14;
  --surface: #111720;
  --surface2: #192030;
  --border: #1e2c3f;
  --accent: #00ff9d;
  --accent2: #7bff61;
  --accent3: #00ff9d;
  --text: #e8f0fe;
  --muted: #6b7fa3;
  --container-max: 1100px;
  --space-page-top: 6.5rem;
  --space-page-side: 1.5rem;
  --space-page-bottom: 2.5rem;
  --space-stack: 2rem;
  --radius-card: 8px;
  --font-body: 0.95rem;
  --font-lead: 1rem;
  --font-label: 0.72rem;
  --font-meta: 0.8rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-weight: 300;
  min-height: 100vh;
  font-size: var(--font-body);
  line-height: 1.6;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9998;
  opacity: 0.5;
}

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 3rem;
  background: rgba(10, 14, 20, 0.9);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(30, 44, 63, 0.5);
}

.nav-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  color: var(--accent);
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: stretch;
  gap: 2rem;
  list-style: none;
  flex-wrap: wrap;
}

.nav-links > li {
  display: flex;
  align-items: center;
}

.nav-links > li > a {
  display: inline-flex;
  align-items: center;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-links .nav-link-label {
  font-family: 'DM Mono', monospace;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  line-height: 1.2;
}

.nav-links a:hover,
.nav-links a[aria-current='page'] {
  color: var(--accent);
}

.nav-dropdown {
  position: relative;
}

.nav-dropdown > details {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

.nav-dropdown summary {
  display: inline-flex;
  align-items: center;
  list-style: none;
  cursor: pointer;
  color: var(--muted);
  margin: 0;
  padding: 0;
  transition: color 0.2s;
  -webkit-appearance: none;
  appearance: none;
}

.nav-dropdown summary::-webkit-details-marker {
  display: none;
}

.nav-dropdown summary::marker {
  content: '';
}

.nav-dropdown summary:hover,
.nav-dropdown details[open] > summary,
.nav-dropdown.is-current > details > summary {
  color: var(--accent);
}

.nav-dropdown summary:focus-visible,
.nav-links a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.nav-submenu {
  position: absolute;
  top: calc(100% + 0.65rem);
  left: 0;
  min-width: 200px;
  margin: 0;
  padding: 0.4rem 0;
  list-style: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  z-index: 1001;
}

.nav-submenu a {
  display: block;
  padding: 0.65rem 1.25rem;
  font-family: 'DM Mono', monospace;
  font-size: 0.78rem;
  text-transform: none;
  letter-spacing: 0.06em;
}

.nav-submenu a:hover {
  background: rgba(0, 255, 157, 0.06);
}

main {
  position: relative;
  z-index: 1;
  width: min(100%, var(--container-max));
  margin: 0 auto;
  padding: var(--space-page-top) var(--space-page-side) var(--space-page-bottom);
}

.contact-main {
  width: min(100%, var(--container-max));
  margin: 0 auto;
  padding: var(--space-page-top) var(--space-page-side) var(--space-page-bottom);
  text-align: center;
}

.projects-page {
  flex: 1;
  position: relative;
  z-index: 1;
  width: 100%;
}

h1 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: clamp(1.9rem, 4vw, 2.45rem);
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 0.9rem;
}

h2 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: clamp(1.2rem, 2.8vw, 1.6rem);
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.section-tag {
  font-family: 'DM Mono', monospace;
  font-size: var(--font-label);
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.lead {
  color: var(--muted);
  font-size: var(--font-lead);
  line-height: 1.6;
}

.meta-text,
.label-mono {
  font-family: 'DM Mono', monospace;
  font-size: var(--font-meta);
  color: var(--muted);
}

.surface-card,
.panel,
.data-section,
.chart-card,
.meta-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
}

.page-stack > * + * {
  margin-top: var(--space-stack);
}

.site-footer-base,
.site-footer,
.page-foot,
.attribution,
footer.site-footer,
footer {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.6;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

@media (max-width: 768px) {
  nav {
    padding: 1rem 1.5rem;
  }

  main,
  .contact-main {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .nav-links {
    gap: 1rem;
    justify-content: flex-end;
  }
}