/* ===========================================================
   420SGE · The GEO Observatory · Stylesheet v1
   =========================================================== */

:root {
  --bg: #0a0e1a;
  --surface: #131826;
  --surface-2: #1a2034;
  --border: #232a3d;
  --border-bright: #2e3850;
  --text: #e6ebf5;
  --text-dim: #8892a8;
  --text-faint: #5a6480;
  --mint: #00f5d4;
  --mint-glow: rgba(0, 245, 212, 0.15);
  --amber: #ffb547;
  --red: #ff5470;
  --blue: #4a9eff;
  --purple: #9d6cff;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  background-image:
    linear-gradient(rgba(0, 245, 212, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 245, 212, 0.025) 1px, transparent 1px);
  background-size: 32px 32px;
  background-attachment: fixed;
}

.mono { font-family: 'JetBrains Mono', 'SF Mono', Menlo, monospace; }

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 32px;
}

/* === NAV === */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.5px;
  text-decoration: none;
  color: var(--text);
}
.logo-dot {
  width: 10px;
  height: 10px;
  background: var(--mint);
  border-radius: 50%;
  box-shadow: 0 0 14px var(--mint);
  animation: pulse 2s ease-in-out infinite;
}
.logo .accent { color: var(--mint); }
.logo small {
  color: var(--text-faint);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-left: 8px;
  font-family: 'JetBrains Mono', monospace;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}
nav .nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
  font-size: 13px;
  color: var(--text-dim);
}
nav .nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.15s;
}
nav .nav-links a:hover { color: var(--mint); }

/* === HERO (Index) === */
.hero {
  padding: 100px 0 80px;
  position: relative;
}
.hero::after {
  content: '';
  position: absolute;
  top: 50%;
  right: -200px;
  transform: translateY(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--mint-glow) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}
.hero > .container { position: relative; z-index: 1; }
.stamp {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--mint);
  background: rgba(0, 245, 212, 0.06);
  border: 1px solid rgba(0, 245, 212, 0.2);
  padding: 8px 14px;
  border-radius: 4px;
  margin-bottom: 32px;
}
.stamp .live-dot {
  width: 7px;
  height: 7px;
  background: var(--mint);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--mint);
  animation: pulse 2s ease-in-out infinite;
}
h1 {
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -2.5px;
  margin-bottom: 24px;
  max-width: 900px;
}
h1 .gradient {
  background: linear-gradient(135deg, var(--mint) 0%, var(--blue) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  font-size: 20px;
  color: var(--text-dim);
  max-width: 680px;
  line-height: 1.55;
  margin-bottom: 48px;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 880px;
}
.hero-stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
}
.hero-stat-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text-faint);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.hero-stat-value {
  font-size: 26px;
  font-weight: 700;
  color: var(--mint);
  font-family: 'JetBrains Mono', monospace;
}
.hero-stat-sub {
  font-size: 11px;
  color: var(--text-faint);
  margin-top: 4px;
}

/* === SECTION === */
section {
  padding: 80px 0;
  position: relative;
}
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin-bottom: 40px;
  gap: 40px;
  flex-wrap: wrap;
}
.section-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--mint);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-eyebrow::before {
  content: '';
  width: 30px;
  height: 1px;
  background: var(--mint);
}
h2 {
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -1.5px;
  max-width: 700px;
}
.section-intro {
  color: var(--text-dim);
  font-size: 16px;
  max-width: 460px;
  line-height: 1.6;
}

/* === PARAMETER CARDS (Index) === */
.params {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 16px;
}
.param {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px;
  transition: all 0.2s;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
}
.param::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--mint);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s;
}
.param:hover {
  background: var(--surface-2);
  border-color: var(--border-bright);
  transform: translateY(-2px);
}
.param:hover::before { transform: scaleX(1); }
.param-head {
  display: flex;
  justify-content: space-between;
  align-items: start;
  margin-bottom: 14px;
  gap: 12px;
}
.param-cat {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-faint);
}
.param-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.5px;
  padding: 3px 8px;
  border-radius: 3px;
}
.status-etabliert {
  background: rgba(0, 245, 212, 0.1);
  color: var(--mint);
  border: 1px solid rgba(0, 245, 212, 0.25);
}
.status-experimentell {
  background: rgba(255, 181, 71, 0.1);
  color: var(--amber);
  border: 1px solid rgba(255, 181, 71, 0.25);
}
.status-spekulativ {
  background: rgba(255, 84, 112, 0.08);
  color: var(--red);
  border: 1px solid rgba(255, 84, 112, 0.2);
}
.param-name {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 4px;
  font-family: 'JetBrains Mono', monospace;
}
.param-desc {
  color: var(--text-dim);
  font-size: 13px;
  line-height: 1.55;
  margin-bottom: 16px;
  flex: 1;
}
.param-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}
.metric { font-family: 'JetBrains Mono', monospace; }
.metric-label {
  font-size: 9px;
  color: var(--text-faint);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.metric-value {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}
.metric-value.high { color: var(--mint); }
.metric-value.med { color: var(--amber); }
.metric-value.low { color: var(--red); }
.param-link {
  margin-top: 14px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--mint);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.param-link::after { content: '→'; transition: transform 0.15s; }
.param:hover .param-link::after { transform: translateX(4px); }

/* === METHOD === */
.method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 30px;
}
.method-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
}
.method-icon {
  font-size: 24px;
  margin-bottom: 14px;
  font-family: 'JetBrains Mono', monospace;
  color: var(--mint);
}
.method-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}
.method-card p {
  color: var(--text-dim);
  font-size: 13px;
  line-height: 1.6;
}

/* === CTA === */
.cta {
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface-2) 100%);
  border: 1px solid var(--border-bright);
  border-radius: 18px;
  padding: 56px;
  margin: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: '';
  position: absolute;
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse, var(--mint-glow) 0%, transparent 70%);
  pointer-events: none;
}
.cta > * { position: relative; z-index: 1; }
.cta h2 { margin: 0 auto 16px; max-width: none; }
.cta p {
  color: var(--text-dim);
  max-width: 540px;
  margin: 0 auto 32px;
  font-size: 16px;
}
.cta-buttons {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  font-size: 14px;
  transition: all 0.15s;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.5px;
}
.btn-primary {
  background: var(--mint);
  color: var(--bg);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px var(--mint-glow);
}
.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-bright);
}
.btn-secondary:hover { border-color: var(--mint); color: var(--mint); }

/* === FOOTER === */
footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 32px;
  color: var(--text-faint);
  font-size: 13px;
}
footer .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}
footer a {
  color: var(--text-dim);
  text-decoration: none;
  margin-right: 18px;
}
footer a:hover { color: var(--mint); }
.signature {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
}
.signature .accent { color: var(--mint); }

/* ===========================================================
   SUBPAGE STYLES
   =========================================================== */

.subpage-hero {
  padding: 80px 0 40px;
  position: relative;
}
.breadcrumb {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text-faint);
  margin-bottom: 24px;
}
.breadcrumb a {
  color: var(--text-dim);
  text-decoration: none;
}
.breadcrumb a:hover { color: var(--mint); }
.breadcrumb .sep { margin: 0 8px; color: var(--text-faint); }

.subpage-header {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 60px;
}
.subpage-meta {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.subpage-title {
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -1.8px;
  margin-bottom: 18px;
  font-family: 'JetBrains Mono', monospace;
}
.subpage-pitch {
  font-size: 18px;
  color: var(--text-dim);
  line-height: 1.55;
  max-width: 520px;
}
.subpage-infographic {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 320px;
  overflow: hidden;
  position: relative;
}
.subpage-infographic svg {
  width: 100%;
  height: auto;
  max-height: 340px;
}

.subpage-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin-bottom: 60px;
}
.subpage-stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
}
.subpage-stat-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text-faint);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.subpage-stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--mint);
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 6px;
}
.subpage-stat-sub {
  font-size: 12px;
  color: var(--text-faint);
}

.subpage-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
}
.subpage-block h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.subpage-block h3::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 1px;
  background: var(--mint);
  vertical-align: middle;
  margin-right: 12px;
}
.subpage-block p {
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 16px;
}
.subpage-block ul {
  list-style: none;
  padding: 0;
}
.subpage-block ul li {
  color: var(--text-dim);
  padding: 10px 0 10px 28px;
  position: relative;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.subpage-block ul li:last-child { border-bottom: none; }
.subpage-block ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--mint);
  font-family: 'JetBrains Mono', monospace;
}

.code-block {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--text);
  line-height: 1.6;
  overflow-x: auto;
  margin-top: 16px;
}
.code-block .key { color: var(--mint); }
.code-block .str { color: var(--amber); }
.code-block .com { color: var(--text-faint); font-style: italic; }

/* === SOURCES === */
.sources {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 36px;
  margin-bottom: 60px;
}
.sources h3 {
  font-size: 14px;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--mint);
  margin-bottom: 24px;
}
.source-list {
  display: grid;
  gap: 18px;
}
.source {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  padding: 18px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  color: inherit;
  transition: all 0.15s;
}
.source:hover {
  border-color: var(--mint);
  transform: translateX(4px);
}
.source-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 32px;
  color: var(--mint);
  font-weight: 700;
  line-height: 1;
}
.source-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.source-meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-faint);
  margin-bottom: 6px;
  letter-spacing: 0.5px;
}
.source-desc {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.5;
}

/* === RESPONSIVE === */
@media (max-width: 920px) {
  .subpage-header { grid-template-columns: 1fr; gap: 40px; }
  .subpage-content { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 720px) {
  .container { padding: 0 20px; }
  nav .nav-links { display: none; }
  .hero { padding: 60px 0 50px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .method-grid { grid-template-columns: 1fr; }
  .cta { padding: 40px 24px; }
  section { padding: 50px 0; }
  .sources { padding: 24px; }
}