/* StopHackGo – Futuristic, professional, attention-getting */

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;600;700;800;900&family=Exo+2:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&display=swap');

:root {
  /* Dark palette */
  --bg-deep: #050810;
  --bg-main: #0a0e17;
  --bg-surface: #0f1419;
  --bg-elevated: #161b22;
  --bg-card: rgba(22, 27, 34, 0.85);
  /* Stoplight theme: Red (Stop), Amber (Caution), Green (Go) */
  --stoplight-red: #ef4444;
  --stoplight-red-glow: rgba(239, 68, 68, 0.25);
  --stoplight-amber: #f59e0b;
  --stoplight-amber-glow: rgba(245, 158, 11, 0.25);
  --stoplight-green: #22c55e;
  --stoplight-green-glow: rgba(34, 197, 94, 0.25);
  /* Primary accent: Green (Go) – links, main highlights */
  --accent: var(--stoplight-green);
  --accent-dim: rgba(34, 197, 94, 0.7);
  --accent-glow: var(--stoplight-green-glow);
  --accent-border: rgba(34, 197, 94, 0.35);
  /* Secondary: Amber (Caution) */
  --accent-2: var(--stoplight-amber);
  --accent-2-glow: var(--stoplight-amber-glow);
  /* Tertiary: Red (Stop) */
  --highlight: var(--stoplight-red);
  --highlight-glow: var(--stoplight-red-glow);
  /* Text */
  --text: #e6edf3;
  --text-muted: #8b949e;
  --text-dim: #6e7681;
  /* Typography */
  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Exo 2', -apple-system, BlinkMacSystemFont, sans-serif;
  /* Layout */
  --max-width: 1100px;
  --spacing: 1.5rem;
  --radius: 8px;
  --radius-sm: 4px;
  --radius-lg: 12px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.15s ease;
  --grid-offset-x: 0;
  --grid-offset-y: 0;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg-main);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Subtle grid background – stoplight green tint (JS can set --grid-offset-x/y for parallax) */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(34, 197, 94, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 197, 94, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  background-position: var(--grid-offset-x) var(--grid-offset-y);
  transition: background-position 0.15s ease-out;
  pointer-events: none;
  z-index: 0;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-dim);
}

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

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing);
  position: relative;
  z-index: 1;
}

/* ========== Header – glass, stoplight bar ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 8, 16, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--accent-border);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

/* Stoplight strip: red | amber | green */
.site-header::after {
  content: '';
  display: block;
  height: 4px;
  background: linear-gradient(90deg,
    var(--stoplight-red) 0%,
    var(--stoplight-red) 33.33%,
    var(--stoplight-amber) 33.33%,
    var(--stoplight-amber) 66.66%,
    var(--stoplight-green) 66.66%,
    var(--stoplight-green) 100%);
  opacity: 0.9;
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing);
  padding: 1rem var(--spacing);
}

.site-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color var(--transition-fast);
}

.site-title:hover {
  color: var(--accent);
  text-decoration: none;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.site-nav a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.site-nav a:hover {
  color: var(--accent);
  border-color: var(--accent-border);
  background: rgba(0, 212, 255, 0.06);
  text-decoration: none;
}

/* ========== Main content ========== */
.main-content {
  min-height: calc(100vh - 180px);
  padding: 3rem 0 4rem;
}

.main-content h1 {
  font-family: var(--font-display);
  margin: 0 0 1rem;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text);
}

.main-content h2 {
  font-family: var(--font-display);
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--accent);
  text-transform: uppercase;
}

.main-content p {
  margin: 0 0 1rem;
  color: var(--text-muted);
}

/* ========== Home – Hero (stoplight gradient) ========== */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 3rem;
  padding: 4rem 2rem;
  position: relative;
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg,
    rgba(239, 68, 68, 0.06) 0%,
    rgba(245, 158, 11, 0.06) 50%,
    rgba(34, 197, 94, 0.08) 100%);
  box-shadow: 0 0 60px var(--accent-glow), inset 0 1px 0 rgba(255, 255, 255, 0.03);
  overflow: hidden;
}

/* Stoplight order: red → amber → green */
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 2px;
  background: linear-gradient(90deg,
    transparent,
    var(--stoplight-red),
    var(--stoplight-amber),
    var(--stoplight-green),
    transparent);
  opacity: 0.7;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 1rem;
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-sm);
  background: rgba(34, 197, 94, 0.08);
}

.hero h1 {
  margin-bottom: 0.75rem;
  color: var(--text);
  font-size: clamp(2rem, 5vw, 3rem);
  text-shadow: 0 0 40px var(--accent-glow);
}

.tagline {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin: 0;
  font-weight: 500;
  max-width: 48ch;
  width: 100%;
  text-align: center;
  line-height: 1.6;
}

/* Value statement – standout card */
.value-statement {
  background: var(--bg-card);
  padding: 2rem 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--accent-border);
  margin-bottom: 2.5rem;
  position: relative;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  overflow: hidden;
}

.value-statement::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--stoplight-red), var(--stoplight-amber), var(--stoplight-green));
}

.value-statement h2 {
  margin-top: 0;
  color: var(--accent);
}

.value-quote {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  margin: 0;
  line-height: 1.65;
}

/* Overview – card with stoplight visual */
.overview {
  margin-bottom: 2.5rem;
  padding: 2rem 2rem 2rem 2.25rem;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(34, 197, 94, 0.2);
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
}

.overview::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--stoplight-red), var(--stoplight-amber), var(--stoplight-green));
  opacity: 0.9;
}

.overview-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.stoplight-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  box-shadow: 0 0 12px currentColor;
}

.stoplight-dot--red { background: var(--stoplight-red); color: var(--stoplight-red); }
.stoplight-dot--amber { background: var(--stoplight-amber); color: var(--stoplight-amber); }
.stoplight-dot--green { background: var(--stoplight-green); color: var(--stoplight-green); }

.overview h2 {
  margin-top: 0;
  text-align: center;
}

.overview p {
  text-align: center;
  max-width: 56ch;
  margin-left: auto;
  margin-right: auto;
}

/* Benefits – card grid with stoplight accents */
.benefits {
  margin-bottom: 2.5rem;
}

.benefits h2 {
  margin-bottom: 1.5rem;
  text-align: center;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.benefit-card {
  position: relative;
  padding: 1.25rem 1.5rem 1.25rem 2rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
  line-height: 1.55;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.benefit-card:hover {
  border-color: var(--accent-border);
  box-shadow: 0 0 20px var(--accent-glow);
}

.benefit-card--red { border-left: 4px solid var(--stoplight-red); }
.benefit-card--amber { border-left: 4px solid var(--stoplight-amber); }
.benefit-card--green { border-left: 4px solid var(--stoplight-green); }

.benefit-card__light {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  box-shadow: 0 0 10px currentColor;
}

.benefit-card--red .benefit-card__light { background: var(--stoplight-red); color: var(--stoplight-red); }
.benefit-card--amber .benefit-card__light { background: var(--stoplight-amber); color: var(--stoplight-amber); }
.benefit-card--green .benefit-card__light { background: var(--stoplight-green); color: var(--stoplight-green); }

.benefit-card strong {
  color: var(--text);
}

/* CTA */
.cta {
  text-align: center;
  padding: 2.5rem 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--accent-border);
  background: rgba(34, 197, 94, 0.05);
}

.cta p {
  margin: 0;
  font-size: 1.05rem;
  color: var(--text-muted);
}

.cta a {
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1px solid var(--accent-border);
  padding-bottom: 1px;
}

.cta a:hover {
  color: var(--accent-dim);
  border-bottom-color: var(--accent-dim);
}

/* ========== Technology page ========== */
.intro {
  margin-bottom: 2.5rem;
  padding: 1.5rem 0 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.intro-lead {
  margin-bottom: 1.5rem;
  color: var(--text-muted);
  max-width: 52ch;
}

.intro-pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.pillar {
  position: relative;
  padding: 1.5rem 1.5rem 1.5rem 2rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-left-width: 4px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.pillar:hover {
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.pillar--red { border-left-color: var(--stoplight-red); }
.pillar--green { border-left-color: var(--stoplight-green); }

.pillar-dot {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  box-shadow: 0 0 10px currentColor;
}

.pillar--red .pillar-dot { background: var(--stoplight-red); color: var(--stoplight-red); }
.pillar--green .pillar-dot { background: var(--stoplight-green); color: var(--stoplight-green); }

.pillar h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text);
  text-transform: uppercase;
}

.pillar p {
  margin: 0 0 0.35rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.pillar p:last-child {
  margin-bottom: 0;
}

.tech-stack-title {
  margin: 2rem 0 1rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-transform: uppercase;
  text-align: center;
}

.tech-section {
  background: var(--bg-card);
  padding: 1.75rem 2rem 1.75rem 2.25rem;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-left-width: 4px;
  margin-bottom: 1rem;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.tech-section--red { border-left-color: var(--stoplight-red); }
.tech-section--amber { border-left-color: var(--stoplight-amber); }
.tech-section--green { border-left-color: var(--stoplight-green); }

.tech-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  opacity: 0.5;
}

.tech-section--red::before { background: linear-gradient(90deg, var(--stoplight-red), transparent); }
.tech-section--amber::before { background: linear-gradient(90deg, var(--stoplight-amber), transparent); }
.tech-section--green::before { background: linear-gradient(90deg, var(--stoplight-green), transparent); }

.tech-section__label {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.05);
}

.tech-section:hover {
  border-color: var(--accent-border);
  box-shadow: 0 0 30px var(--accent-glow);
}

.tech-section h2 {
  margin-top: 0;
  font-size: 1rem;
}

/* Architecture flow diagram */
.architecture {
  margin-top: 2.5rem;
  padding: 2rem;
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.04) 0%, rgba(245, 158, 11, 0.04) 50%, rgba(34, 197, 94, 0.06) 100%);
  border-radius: var(--radius-lg);
  border: 1px solid var(--accent-border);
  position: relative;
}

.architecture::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--stoplight-red), var(--stoplight-amber), var(--stoplight-green));
}

.architecture h2 {
  margin-top: 0;
  margin-bottom: 1.25rem;
  text-align: center;
}

.architecture-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem 0.75rem;
  margin-bottom: 1.25rem;
  padding: 1rem 0;
}

.flow-node {
  padding: 0.75rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--text);
  text-align: center;
  line-height: 1.4;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
}

.flow-node small {
  display: block;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

.flow-node--browser { border-top: 3px solid var(--stoplight-green); }
.flow-node--flask { border-top: 3px solid var(--stoplight-amber); }
.flow-node--split {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 10ch;
  border-top: 3px solid var(--stoplight-amber);
}
.flow-node--split .flow-plus { font-size: 0.7rem; color: var(--text-muted); }
.flow-node--npu { border-top: 3px solid var(--stoplight-red); }

.flow-arrow {
  color: var(--accent);
  font-size: 1.25rem;
  opacity: 0.8;
}

.architecture-caption {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-muted);
  text-align: center;
  max-width: 50ch;
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 640px) {
  .architecture-flow {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }
  .flow-arrow { transform: rotate(90deg); }
}

/* ========== Funding page ========== */
.funding-intro {
  font-size: 1.1rem;
  margin-bottom: 2.5rem;
  color: var(--text-muted);
  font-weight: 500;
}

.funders {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.funder-card {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.06);
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.funder-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
}

.funder-card:nth-child(2)::before {
  background: var(--accent-2);
}

.funder-card:nth-child(3)::before {
  background: var(--highlight);
}

.funder-card:hover {
  border-color: var(--accent-border);
  box-shadow: 0 0 24px var(--accent-glow);
}

.funder-card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  color: var(--text);
}

.funder-amount {
  font-family: var(--font-display);
  font-weight: 700;
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
}

.funder-card:nth-child(1) .funder-amount {
  color: var(--stoplight-green);
}

.funder-card:nth-child(2) .funder-amount {
  color: var(--accent-2);
}

.funder-card:nth-child(3) .funder-amount {
  color: var(--highlight);
}

.funder-card p:last-child {
  margin-bottom: 0;
  color: var(--text-muted);
}

.funding-note {
  color: var(--text-dim);
  font-style: italic;
  padding: 1.25rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* ========== About page ========== */
.about-intro {
  font-size: 1.1rem;
  margin-bottom: 2.5rem;
  color: var(--text-muted);
}

.contributors {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.contributor-card {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(34, 197, 94, 0.2);
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.contributor-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--stoplight-red), var(--stoplight-amber), var(--stoplight-green));
  opacity: 0.6;
}

.contributor-card:hover {
  border-color: var(--accent-border);
  box-shadow: 0 0 30px var(--accent-glow);
  transform: translateY(-2px);
}

.contributor-img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center center;
  margin: 0 auto 1.25rem;
  border: 2px solid var(--accent-border);
  box-shadow: 0 0 20px var(--accent-glow);
}

/* Lewis photo: shift framing up so top of head isn’t cropped */
.contributor-img--lewis {
  object-position: 50% 40%;
}

.contributor-card h2 {
  margin: 0 0 0.25rem;
  font-size: 1.1rem;
  color: var(--text);
}

.contributor-role {
  font-weight: 600;
  color: var(--accent);
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
}

.contributor-bio {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.contributor-link {
  margin: 0.75rem 0 0;
  font-size: 0.85rem;
}

.contributor-link a {
  color: var(--accent);
}

.contributor-link a:hover {
  color: var(--accent-dim);
}

/* ========== Footer – stoplight strip ========== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--accent-border);
  padding: 1.5rem var(--spacing);
  padding-top: calc(4px + 1.5rem);
  margin-top: 3rem;
  position: relative;
  z-index: 1;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg,
    var(--stoplight-red) 0%,
    var(--stoplight-red) 33.33%,
    var(--stoplight-amber) 33.33%,
    var(--stoplight-amber) 66.66%,
    var(--stoplight-green) 66.66%,
    var(--stoplight-green) 100%);
  opacity: 0.9;
}

.site-footer p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-dim);
  text-align: center;
}

/* ========== Scroll reveal (JS adds .is-visible) ========== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal.reveal--stagger.is-visible li:nth-child(1) { transition-delay: 0.05s; }
.reveal.reveal--stagger.is-visible li:nth-child(2) { transition-delay: 0.1s; }
.reveal.reveal--stagger.is-visible li:nth-child(3) { transition-delay: 0.15s; }
.reveal.reveal--stagger.is-visible li:nth-child(4) { transition-delay: 0.2s; }
.reveal.reveal--stagger.is-visible li:nth-child(5) { transition-delay: 0.25s; }
.reveal.reveal--stagger.is-visible li:nth-child(6) { transition-delay: 0.3s; }

.reveal--stagger li {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.45s cubic-bezier(0.4, 0, 0.2, 1), transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal--stagger.is-visible li {
  opacity: 1;
  transform: translateY(0);
}

/* Hero: breathing glow (green) + scan line */
@keyframes heroGlow {
  0%, 100% { box-shadow: 0 0 60px var(--accent-glow), inset 0 1px 0 rgba(255, 255, 255, 0.03); }
  50% { box-shadow: 0 0 90px var(--accent-glow), 0 0 120px rgba(34, 197, 94, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.03); }
}

@keyframes scanLine {
  0% { transform: translateX(-50%) translateY(-100%); }
  100% { transform: translateX(-50%) translateY(100vh); }
}

.hero {
  animation: heroGlow 4s ease-in-out infinite;
}

.hero-scan {
  position: absolute;
  left: 50%;
  top: 0;
  width: 2px;
  height: 80px;
  background: linear-gradient(180deg, transparent, rgba(34, 197, 94, 0.5), transparent);
  pointer-events: none;
  animation: scanLine 8s linear infinite;
}

.hero-spotlight {
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 197, 94, 0.12) 0%, transparent 70%);
  pointer-events: none;
  transform: translate(-50%, -50%);
  transition: opacity 0.2s ease;
  opacity: 0;
  left: 50%;
  top: 50%;
}

/* ========== Entrance animation ========== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero .hero-badge,
.hero h1,
.hero .tagline {
  animation: fadeInUp 0.6s ease-out backwards;
}

.hero .hero-badge { animation-delay: 0.1s; }
.hero h1 { animation-delay: 0.2s; }
.hero .tagline { animation-delay: 0.35s; }

@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    width: 100%;
  }

  .hero {
    padding: 2.5rem 1.25rem;
  }

  .hero h1 {
    font-size: 1.85rem;
  }

  .main-content h1 {
    font-size: 1.75rem;
  }

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

  .contributor-card {
    padding: 1.5rem 1.25rem;
  }
}

@media (max-width: 480px) {
  .main-content {
    padding: 2rem 0 3rem;
  }

  .value-statement,
  .overview,
  .cta {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }
}