/* ═══════════════════════════════════════════════
   DIE FREMDE REINHEIT — Stylesheet
   A View within the Open Science Harbour
   ═══════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;600;700&family=Crimson+Pro:ital,wght@0,300;0,400;0,500;1,300;1,400&family=JetBrains+Mono:wght@300;400&display=swap');

/* ── Reset & Variables ── */

:root {
  --bg-void:        #060607;
  --bg-deep:        #0c0c0e;
  --bg-surface:     #111114;
  --bg-raised:      #18181c;
  --border-dim:     #1e1e24;
  --border-subtle:  #2a2a33;
  --text-primary:   #c8c5be;
  --text-secondary: #8a8780;
  --text-dim:       #5a5850;
  --gold-muted:     #8b7d3c;
  --gold-bright:    #b8a04a;
  --gold-pale:      #d4c878;
  --red-warp:       #6b2020;
  --red-bright:     #8b3030;
  --silver-grey:    #7a7a82;
  --font-display:   'Cinzel', serif;
  --font-body:      'Crimson Pro', serif;
  --font-mono:      'JetBrains Mono', monospace;
  --max-width:      42rem;
  --spacing-unit:   1.5rem;
}

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

html {
  font-size: 18px;
  scroll-behavior: smooth;
}

body {
  background: var(--bg-void);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.75;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--gold-muted);
  color: var(--bg-void);
}

/* ── Ash Particle Effect (landing page only) ── */

.ash-field {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.ash-particle {
  position: absolute;
  width: 2px;
  height: 2px;
  background: var(--text-dim);
  border-radius: 50%;
  opacity: 0;
  animation: ash-fall linear infinite;
}

@keyframes ash-fall {
  0% {
    opacity: 0;
    transform: translateY(-10px) translateX(0) rotate(0deg);
  }
  10% {
    opacity: 0.4;
  }
  90% {
    opacity: 0.2;
  }
  100% {
    opacity: 0;
    transform: translateY(100vh) translateX(40px) rotate(360deg);
  }
}

/* ── Layout ── */

.page-wrapper {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-header {
  padding: calc(var(--spacing-unit) * 0.75) calc(var(--spacing-unit) * 1.5);
  border-bottom: 1px solid var(--border-dim);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-void);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header .site-id {
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.site-header .site-id a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.3s;
}

.site-header .site-id a:hover {
  color: var(--gold-muted);
}

.site-nav {
  display: flex;
  gap: calc(var(--spacing-unit) * 1.25);
}

.site-nav a {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.3s;
  position: relative;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--gold-muted);
}

.site-nav a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--gold-muted);
}

main {
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: calc(var(--spacing-unit) * 3) calc(var(--spacing-unit) * 1.5);
}

/* ── Typography ── */

h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.8rem;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  margin-bottom: calc(var(--spacing-unit) * 0.5);
  line-height: 1.3;
}

h1 .subtitle {
  display: block;
  font-family: var(--font-body);
  font-weight: 300;
  font-style: italic;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  color: var(--text-secondary);
  margin-top: 0.5rem;
}

h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.1rem;
  letter-spacing: 0.1em;
  color: var(--gold-muted);
  margin-top: calc(var(--spacing-unit) * 2.5);
  margin-bottom: calc(var(--spacing-unit) * 0.75);
}

h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-top: calc(var(--spacing-unit) * 1.5);
  margin-bottom: calc(var(--spacing-unit) * 0.5);
}

p {
  margin-bottom: var(--spacing-unit);
}

/* ── Landing Hero ── */

.hero {
  text-align: center;
  padding: calc(var(--spacing-unit) * 5) calc(var(--spacing-unit) * 1.5);
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.hero h1 {
  font-size: 2.2rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  animation: fade-in 2s ease-out;
}

.hero .tagline {
  font-family: var(--font-body);
  font-weight: 300;
  font-style: italic;
  font-size: 1rem;
  color: var(--text-secondary);
  margin-top: 1rem;
  animation: fade-in 2.5s ease-out;
}

.hero .rule {
  width: 4rem;
  height: 1px;
  background: var(--gold-muted);
  margin: 2rem auto;
  animation: expand-rule 2s ease-out;
}

@keyframes fade-in {
  0% { opacity: 0; transform: translateY(8px); }
  100% { opacity: 1; transform: translateY(0); }
}

@keyframes expand-rule {
  0% { width: 0; opacity: 0; }
  100% { width: 4rem; opacity: 1; }
}

/* ── Intro Section ── */

.intro {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 3);
}

/* ── Links ── */

a {
  color: var(--gold-muted);
  text-decoration: none;
  transition: color 0.3s;
}

a:hover {
  color: var(--gold-bright);
}

/* ── Dividers ── */

hr {
  border: none;
  height: 1px;
  background: var(--border-dim);
  margin: calc(var(--spacing-unit) * 2) 0;
}

.divider-ornament {
  text-align: center;
  margin: calc(var(--spacing-unit) * 2.5) 0;
  color: var(--text-dim);
  font-size: 0.7rem;
  letter-spacing: 1em;
}

/* ── Cards (for navigation) ── */

.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-unit);
  margin-top: calc(var(--spacing-unit) * 1.5);
}

.card {
  display: block;
  padding: calc(var(--spacing-unit) * 1.25);
  background: var(--bg-deep);
  border: 1px solid var(--border-dim);
  transition: border-color 0.4s, background 0.4s;
  text-decoration: none;
}

.card:hover {
  border-color: var(--gold-muted);
  background: var(--bg-surface);
}

.card .card-label {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  font-weight: 300;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
}

.card .card-title {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.card .card-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── Chapter List ── */

.chapter-list {
  list-style: none;
  margin-top: var(--spacing-unit);
}

.chapter-list li {
  border-bottom: 1px solid var(--border-dim);
}

.chapter-list a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: calc(var(--spacing-unit) * 0.75) 0;
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.3s;
}

.chapter-list a:hover {
  color: var(--gold-bright);
}

.chapter-list .chapter-num {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  min-width: 3rem;
}

.chapter-list .chapter-title {
  flex: 1;
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}

.chapter-list .chapter-status {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ── Story Prose ── */

.prose {
  line-height: 1.85;
}

.prose p {
  margin-bottom: var(--spacing-unit);
}

.prose .fragment {
  display: block;
  margin-bottom: 0.35rem;
  line-height: 1.5;
}

.prose .fragment:last-child {
  margin-bottom: var(--spacing-unit);
}

.prose .scene-break {
  text-align: center;
  margin: calc(var(--spacing-unit) * 2.5) 0;
  color: var(--text-dim);
  font-size: 0.7rem;
  letter-spacing: 0.8em;
}

.prose .dialogue {
  color: var(--text-primary);
  font-weight: 400;
}

.prose em {
  font-style: italic;
  color: var(--text-secondary);
}

.prose .emphasis-cold {
  color: var(--silver-grey);
  font-style: italic;
}

/* ── Disclaimer ── */

.disclaimer {
  margin-top: calc(var(--spacing-unit) * 3);
  padding: var(--spacing-unit);
  border: 1px solid var(--border-dim);
  background: var(--bg-deep);
  font-size: 0.7rem;
  color: var(--text-dim);
  line-height: 1.7;
}

.disclaimer strong {
  color: var(--text-secondary);
  font-weight: 400;
  text-transform: uppercase;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
}

/* ── Footer ── */

.site-footer {
  padding: calc(var(--spacing-unit) * 1.5);
  border-top: 1px solid var(--border-dim);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--text-dim);
  letter-spacing: 0.06em;
  line-height: 1.8;
}

.site-footer a {
  color: var(--text-dim);
  transition: color 0.3s;
}

.site-footer a:hover {
  color: var(--gold-muted);
}

/* ── Framework Entries ── */

.framework-entry {
  margin-bottom: calc(var(--spacing-unit) * 2);
  padding-left: var(--spacing-unit);
  border-left: 1px solid var(--border-dim);
}

.framework-entry .entry-label {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.35rem;
}

.framework-entry p {
  font-size: 0.9rem;
}

/* ── Tag ── */

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  border: 1px solid var(--border-dim);
  padding: 0.15rem 0.5rem;
  margin-right: 0.35rem;
}

.tag.warp { border-color: var(--red-warp); color: var(--red-bright); }
.tag.imperial { border-color: var(--silver-grey); color: var(--silver-grey); }
.tag.astartes { border-color: var(--gold-muted); color: var(--gold-muted); }

/* ── Back Navigation ── */

.back-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: calc(var(--spacing-unit) * 2);
  transition: color 0.3s;
}

.back-link:hover {
  color: var(--gold-muted);
}

.back-link::before {
  content: '← ';
}

/* ── Responsive ── */

@media (max-width: 640px) {
  html { font-size: 16px; }
  .hero h1 { font-size: 1.6rem; }
  .card-grid { grid-template-columns: 1fr; }
  .site-nav { gap: var(--spacing-unit); }
  .chapter-list .chapter-status { display: none; }
}