/* DroneGrafie.com – Design-System
   Dunkle, ruhige Bühne für Luftbildfotografie: großzügige Bildflächen,
   zurückhaltende Typografie, ein warmer Akzentton (golden-hour). */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600&display=swap');

:root {
  --bg: #0b0c0e;
  --bg-raised: #131518;
  --bg-raised-2: #1a1d21;
  --border: #26292e;
  --text: #eef0f2;
  --text-dim: #9ba1a8;
  --text-faint: #6b7178;
  --accent: #d9a15b;
  --accent-strong: #e8b878;
  --danger: #d9705b;
  --focus: #d9a15b;

  --font-display: 'Space Grotesk', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --radius: 6px;
  --radius-lg: 14px;
  --container: 1680px;
  --gutter: clamp(1rem, 2.2vw, 2.25rem);
}

* { box-sizing: border-box; }
html { color-scheme: dark; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.1;
  margin: 0 0 0.5em;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.4rem, 5.5vw, 4.25rem); font-weight: 600; }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: 1.1rem; font-weight: 600; font-family: var(--font-body); letter-spacing: normal; }

p { color: var(--text-dim); }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ---- Bilder: kein Download-Komfort (Abschreckung, kein echter Schutz) ---- */
.protected-image {
  -webkit-user-select: none;
  user-select: none;
  -webkit-user-drag: none;
  pointer-events: auto;
}

/* ---------------------------------------------------------------- Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem var(--gutter);
  background: linear-gradient(to bottom, rgba(11,12,14,0.92), rgba(11,12,14,0.75) 70%, transparent);
  backdrop-filter: blur(8px);
}

.brand {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
}
.brand span { color: var(--accent); }

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  font-size: 0.92rem;
  color: var(--text-dim);
}
.main-nav a:hover { color: var(--text); }
.main-nav a.active { color: var(--accent); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
}

@media (max-width: 860px) {
  .main-nav { display: none; }
  .main-nav.open {
    display: flex;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg-raised);
    border-bottom: 1px solid var(--border);
    padding: 0.5rem 0;
  }
  .main-nav.open a { padding: 0.9rem var(--gutter); border-top: 1px solid var(--border); }
  .nav-toggle { display: block; }
}

/* ------------------------------------------------------------------ Hero */
.hero {
  position: relative;
  min-height: 78vh;
  display: flex;
  align-items: flex-end;
  padding: 4rem var(--gutter);
  margin-top: -5.5rem;
  background: var(--bg-raised) center/cover no-repeat;
}
.hero::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(11,12,14,0.95) 0%, rgba(11,12,14,0.35) 55%, rgba(11,12,14,0.55) 100%);
}
.hero-content { position: relative; max-width: 42rem; }
.hero-eyebrow {
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.hero p { color: #d3d6da; font-size: 1.05rem; max-width: 34rem; }

/* ------------------------------------------------- Startseite (ein Bildschirm) */
/* Slogan + Kategorien sollen auf der Startseite immer ohne Scrollen zu sehen
   sein, unabhängig von Bildschirmgröße - Hero behält seine Mindesthöhe nie
   starr bei, sondern schrumpft/wächst über flex + vh/vw-Clamp mit der
   Fensterhöhe; die Kategorie-Kacheln füllen den Rest und passen ihre eigene
   Höhe über grid-auto-rows an (kein festes aspect-ratio mehr auf dieser Seite). */
body.home-page {
  height: 100dvh;
  overflow: hidden;
}
.home-viewport {
  height: 100dvh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.home-viewport .site-header { position: static; flex: 0 0 auto; background: none; backdrop-filter: none; }
.home-viewport .site-footer { flex: 0 0 auto; padding: 0.85rem var(--gutter) 1.1rem; }
.home-hero {
  flex: 0 0 auto;
  min-height: 0;
  margin-top: 0;
  align-items: flex-start;
  padding: 1.5rem var(--gutter) 1.75rem;
}
.home-hero h1 { font-size: clamp(1.6rem, 1.6vw + 2.6vh, 3.75rem); }
.home-hero p { font-size: clamp(0.9rem, 0.3vw + 1.4vh, 1.05rem); }

.home-grid-section {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  padding-bottom: 1.5rem;
}
.home-grid-container {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
}
.home-grid-container .section-heading { flex: 0 0 auto; margin-bottom: 1rem; }
.home-grid {
  flex: 1 1 auto;
  min-height: 0;
  grid-auto-rows: minmax(90px, 1fr);
  overflow-y: auto;
}
.home-grid .card { aspect-ratio: auto; height: 100%; }

/* ---------------------------------------------------------------- Grids */
.section {
  padding: 3.5rem var(--gutter);
}
.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2.25rem;
}
.section-heading p { margin: 0; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 0.9rem;
}

.card {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-raised);
  border: 1px solid var(--border);
}
.card img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16,1,0.3,1);
}
.card:hover img { transform: scale(1.06); }
.card-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.05) 55%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.25rem;
}
.card-overlay h3 { margin: 0; color: var(--text); }
.card-overlay .count { color: var(--text-dim); font-size: 0.85rem; margin-top: 0.2rem; }

.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 0.6rem;
}
.photo-grid .thumb {
  aspect-ratio: 1;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-raised);
  cursor: zoom-in;
  border: 1px solid var(--border);
}
.photo-grid .thumb img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s ease;
}
.photo-grid .thumb:hover img { transform: scale(1.05); }

.empty-state {
  color: var(--text-faint);
  padding: 3rem 0;
  text-align: center;
}

/* ---------------------------------------------------------------- Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.4rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid var(--border);
  background: var(--bg-raised);
  color: var(--text);
  cursor: pointer;
}
.btn:hover { border-color: var(--accent); }
.btn-accent {
  background: var(--accent);
  border-color: var(--accent);
  color: #1a1305;
  font-weight: 600;
}
.btn-accent:hover { background: var(--accent-strong); border-color: var(--accent-strong); }

/* ---------------------------------------------------------------- Forms */
.field { display: flex; flex-direction: column; gap: 0.4rem; margin-bottom: 1.1rem; }
.field label { font-size: 0.85rem; color: var(--text-dim); }
.field input, .field select, .field textarea {
  background: var(--bg-raised-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.7rem 0.85rem;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 2px solid var(--focus);
  outline-offset: 1px;
}

/* ---------------------------------------------------------------- Modal */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(6,7,8,0.8);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
  padding: 1.5rem;
}
.modal-backdrop[hidden] { display: none; }
.modal {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  max-width: 30rem;
  width: 100%;
  padding: 2rem;
  max-height: 85vh;
  overflow-y: auto;
}
.modal-close {
  position: absolute;
  top: 1rem; right: 1.25rem;
  background: none; border: none;
  color: var(--text-dim);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ---------------------------------------------------------------- Lightbox */
.lightbox {
  position: fixed; inset: 0;
  background: rgba(6,7,8,0.97);
  z-index: 200;
  display: flex; align-items: center; justify-content: center;
}
.lightbox[hidden] { display: none; }
.lightbox img {
  max-width: 99vw; max-height: 98vh;
  width: auto; height: auto;
  object-fit: contain;
}
.lightbox-nav {
  position: absolute;
  top: 0; bottom: 0;
  width: 4.5rem;
  display: flex; align-items: center; justify-content: center;
  background: none; border: none;
  color: var(--text);
  font-size: 2rem;
  cursor: pointer;
  opacity: 0.5;
}
.lightbox-nav:hover { opacity: 1; }
.lightbox-nav.prev { left: 0; }
.lightbox-nav.next { right: 0; }
.lightbox-close {
  position: absolute; top: 1.5rem; right: 1.5rem;
  background: none; border: none;
  color: var(--text); font-size: 1.75rem;
  cursor: pointer;
}
.lightbox-caption {
  position: absolute; bottom: 1.5rem; left: 0; right: 0;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
}

/* ---------------------------------------------------------------- Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 3rem var(--gutter) 2.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
  justify-content: space-between;
  color: var(--text-faint);
  font-size: 0.85rem;
}
.footer-links { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.footer-links a:hover { color: var(--text-dim); }
.version-badge {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.3rem 0.85rem;
  cursor: pointer;
  font-size: 0.78rem;
}
.version-badge:hover { border-color: var(--accent); }

/* ---------------------------------------------------------------- Legal / prose pages */
.prose { max-width: 44rem; }
.prose h2 { margin-top: 2rem; }
.prose p, .prose li { color: var(--text-dim); }

.about-layout {
  display: grid;
  grid-template-columns: 16rem 1fr;
  gap: 3rem;
  align-items: start;
}
.about-photo {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  position: sticky;
  top: 7rem;
}
@media (max-width: 720px) {
  .about-layout { grid-template-columns: 1fr; }
  .about-photo { max-width: 12rem; position: static; }
}

/* ---------------------------------------------------------------- Changelog */
.changelog-row {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}
.changelog-row:last-child { border-bottom: none; }
.changelog-meta { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 0.4rem; }
.changelog-version { font-family: var(--font-display); color: var(--accent); }
.changelog-date { color: var(--text-faint); font-size: 0.8rem; }
.changelog-badge {
  font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em;
  padding: 0.15rem 0.5rem; border-radius: 999px;
  border: 1px solid var(--border); color: var(--text-dim);
}
.changelog-row ul { margin: 0.3rem 0 0; padding-left: 1.1rem; color: var(--text-dim); }