/*
Theme Name: DGzRS Baulogbuch
Theme URI: https://example.com
Author: 
Description: Persönliches Baulogbuch für den Modellbau von DGzRS-Einheiten. Dokumentiert Bauprojekte in chronologischen Bauabschnitten.
Version: 1.0
Requires at least: 6.0
Requires PHP: 7.4
Text Domain: dgzrs-baulogbuch
*/

/* ==========================================================================
   1. Design-Tokens
   ========================================================================== */
:root {
  /* Farben */
  --color-paper: #F7F3EC;       /* Papier/Leinen – Hintergrund */
  --color-ink: #1C2B24;         /* Werkstattgrün – Text/Header */
  --color-copper: #B5673A;      /* Kupfer/Rost – Akzent */
  --color-blueprint: #5C7A8A;   /* Blaupausen-Blau – technische Elemente, Links */
  --color-plywood: #D8CBB0;     /* Sperrholz-Ton – Karten, Trennlinien */
  --color-paper-dark: #EDE6D8;  /* etwas dunkleres Papier für Wechsel-Flächen */
  --color-white: #FFFFFF;

  /* Typografie */
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Inter", -apple-system, Segoe UI, sans-serif;
  --font-mono: "JetBrains Mono", "Courier New", monospace;

  /* Abstände */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;

  /* Sonstiges */
  --radius: 4px;
  --border: 1px solid var(--color-plywood);
  --max-width: 1200px;
}

/* ==========================================================================
   2. Reset & Basis
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-blueprint); text-decoration: none; }
a:hover, a:focus { text-decoration: underline; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--color-copper);
  outline-offset: 2px;
}
h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--color-ink);
  line-height: 1.15;
  margin: 0 0 var(--space-sm);
}
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: 1.3rem; }
p { margin: 0 0 var(--space-sm); }
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}
@media (max-width: 640px) {
  .container { padding: 0 var(--space-sm); }
}

/* ==========================================================================
   3. Header / Navigation
   ========================================================================== */
.site-header {
  border-bottom: var(--border);
  background: var(--color-paper);
  position: sticky;
  top: 0;
  z-index: 50;
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) 0;
}
.site-logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--color-ink);
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}
.site-logo small {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-copper);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.main-nav ul {
  list-style: none;
  display: flex;
  gap: var(--space-md);
  margin: 0;
  padding: 0;
}
.main-nav a {
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.main-nav a:hover { color: var(--color-copper); text-decoration: none; }
.nav-toggle { display: none; }
@media (max-width: 720px) {
  .nav-toggle {
    display: block;
    background: none;
    border: var(--border);
    border-radius: var(--radius);
    padding: 0.4rem 0.7rem;
    font-family: var(--font-mono);
    cursor: pointer;
  }
  .main-nav { display: none; width: 100%; }
  .main-nav.is-open { display: block; }
  .main-nav ul { flex-direction: column; gap: var(--space-sm); padding: var(--space-sm) 0; }
  .site-header__inner { flex-wrap: wrap; }
}

/* ==========================================================================
   3b. Scroll-Hintergrundsystem (wechselndes Untergrundbild je Abschnitt)
   ========================================================================== */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity 0.9s ease;
}
.bg-layer.is-active { opacity: 1; }
.bg-layer::after {
  content: "";
  position: absolute;
  inset: 0;
  /* heller Überlagerungston für Lesbarkeit des Textes, wie beim Vereins-Theme */
  background: linear-gradient(180deg, rgba(247, 243, 236, 0.55) 0%, rgba(247, 243, 236, 0.88) 100%);
}

/* In-Page-Navigation (Sprungmarken zu den Themenabschnitten) */
.section-nav {
  position: sticky;
  top: 61px; /* unterhalb des Site-Headers */
  z-index: 40;
  background: rgba(247, 243, 236, 0.9);
  backdrop-filter: blur(4px);
  border-bottom: var(--border);
}
.section-nav ul {
  list-style: none;
  display: flex;
  gap: var(--space-md);
  margin: 0;
  padding: 0.7rem 0;
  overflow-x: auto;
}
.section-nav a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-ink);
  white-space: nowrap;
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
}
.section-nav a:hover { text-decoration: none; color: var(--color-copper); }
.section-nav a.is-active { color: var(--color-copper); border-bottom-color: var(--color-copper); }

/* Themenabschnitte */
.topic-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--space-xl) 0;
  scroll-margin-top: 110px;
}
.topic-section__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-copper);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-xs);
}
.topic-section__lead {
  max-width: 62ch;
  font-size: 1.1rem;
  color: #3a463f;
}
.topic-section__number {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-blueprint);
  margin-bottom: var(--space-sm);
}
.topic-section__placeholder-note {
  display: inline-block;
  margin-top: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-blueprint);
  border: 1px dashed var(--color-blueprint);
  border-radius: var(--radius);
  padding: 0.3rem 0.6rem;
}

/* Startsektion (Hero als erster Scroll-Abschnitt) */
.topic-section--hero { min-height: 92vh; }
.topic-section--hero .hero__eyebrow { color: var(--color-white); }
.topic-section--hero h1,
.topic-section--hero .topic-section__lead { color: var(--color-white); text-shadow: 0 2px 12px rgba(0,0,0,0.35); }
.topic-section--hero .topic-section__lead { color: #f2ede2; }
.topic-section--hero .scroll-hint {
  position: absolute;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  opacity: 0.85;
}
.topic-section--hero .scroll-hint::after {
  content: "";
  width: 1px;
  height: 28px;
  background: var(--color-white);
  animation: scrollhint 1.6s ease-in-out infinite;
}
@keyframes scrollhint {
  0% { transform: scaleY(0); transform-origin: top; opacity: 0.3; }
  50% { transform: scaleY(1); transform-origin: top; opacity: 1; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0.3; }
}
@media (prefers-reduced-motion: reduce) {
  .topic-section--hero .scroll-hint::after { animation: none; }
  .bg-layer { transition: none; }
}

/* ==========================================================================
   4. Hero / Startseite
   ========================================================================== */
.hero {
  padding: var(--space-xl) 0 var(--space-lg);
  border-bottom: var(--border);
}
.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-copper);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-xs);
}
.hero__title { max-width: 18ch; }
.hero__lead {
  max-width: 60ch;
  font-size: 1.15rem;
  color: #3a463f;
}
.hero__latest {
  margin-top: var(--space-lg);
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--space-md);
  align-items: center;
  background: var(--color-plywood);
  border-radius: var(--radius);
  overflow: hidden;
}
.hero__latest img { width: 100%; height: 100%; object-fit: cover; min-height: 260px; }
.hero__latest-text { padding: var(--space-md); }
.hero__latest-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-blueprint);
}
@media (max-width: 780px) {
  .hero__latest { grid-template-columns: 1fr; }
}

/* ==========================================================================
   5. Stempel-Motiv (Signatur-Element)
   ========================================================================== */
.stamp {
  --stamp-size: 92px;
  width: var(--stamp-size);
  height: var(--stamp-size);
  border-radius: 50%;
  border: 2px solid var(--color-copper);
  color: var(--color-copper);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 1.3;
  transform: rotate(-6deg);
  flex-shrink: 0;
  background: transparent;
  position: relative;
}
.stamp::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px dashed var(--color-copper);
  border-radius: 50%;
  opacity: 0.6;
}
.stamp span { display: block; }
.stamp .stamp__year { font-size: 0.8rem; font-weight: 700; }

/* ==========================================================================
   6. Bauprojekt-Karten (Archiv)
   ========================================================================== */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-md);
  padding: var(--space-lg) 0;
}
.project-card {
  background: var(--color-white);
  border: var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.project-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(28, 43, 36, 0.12);
}
.project-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--color-plywood);
  overflow: hidden;
}
.project-card__media img { width: 100%; height: 100%; object-fit: cover; }
.project-card__stamp { position: absolute; top: 10px; right: 10px; background: var(--color-paper); }
.project-card__body { padding: var(--space-sm) var(--space-md) var(--space-md); flex: 1; display: flex; flex-direction: column; }
.project-card__type {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-blueprint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.3rem;
}
.project-card__title { font-size: 1.25rem; margin-bottom: 0.4rem; }
.project-card__excerpt { color: #4a564e; font-size: 0.95rem; flex: 1; }
.project-card__meta {
  margin-top: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-copper);
  display: flex;
  justify-content: space-between;
}

/* ==========================================================================
   7. Einzelnes Bauprojekt
   ========================================================================== */
.project-header { padding: var(--space-lg) 0 var(--space-md); border-bottom: var(--border); }
.project-header__top { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-md); flex-wrap: wrap; }
.project-header__meta {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-blueprint);
  flex-wrap: wrap;
}
.project-header__meta strong { color: var(--color-ink); font-family: var(--font-body); }

/* Logbuch-Einträge (Bauabschnitte) */
.logbook { padding: var(--space-lg) 0; }
.logbook__entry {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-top: var(--border);
}
.logbook__entry:first-child { border-top: none; }
.logbook__date {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-copper);
  padding-top: 0.2rem;
}
.logbook__entry h3 { margin-bottom: 0.6rem; }
.logbook__text { color: #3a463f; }
.logbook__gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 0.6rem;
  margin-top: var(--space-sm);
}
.logbook__gallery img {
  border-radius: var(--radius);
  aspect-ratio: 4/3;
  object-fit: cover;
  border: var(--border);
}
@media (max-width: 640px) {
  .logbook__entry { grid-template-columns: 1fr; }
}

/* ==========================================================================
   8. Footer
   ========================================================================== */
.site-footer {
  position: relative;
  background: var(--color-paper);
  border-top: var(--border);
  padding: var(--space-lg) 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: #5a655e;
}

/* ==========================================================================
   9. Formulare / Buttons (allgemein)
   ========================================================================== */
.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.7rem 1.3rem;
  border: 2px solid var(--color-ink);
  border-radius: var(--radius);
  color: var(--color-ink);
  background: transparent;
  cursor: pointer;
}
.btn:hover { background: var(--color-ink); color: var(--color-paper); text-decoration: none; }
.btn--copper { border-color: var(--color-copper); color: var(--color-copper); }
.btn--copper:hover { background: var(--color-copper); color: var(--color-white); }

/* Skip-Link für Barrierefreiheit */
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  background: var(--color-ink);
  color: var(--color-paper);
  padding: 0.8rem 1.2rem;
  z-index: 999;
}
.skip-link:focus { left: var(--space-sm); top: var(--space-sm); }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .project-card { transition: none; }
}