/* ============================================================
   OmniKar Site — Theme (matches OmniKar MAUI app Colors.xaml)
   ============================================================ */

:root {
  --bg-primary: #1A1A1A;
  --bg-panel: #262626;
  --bg-surface: #303030;
  --accent: #B4D400;
  --accent-soft: #3D4A00;
  --accent-glow: rgba(180, 212, 0, 0.15);
  --text: #E6E6E6;
  --text-dim: #A0A0A0;
  --orange: #FF8C00;
  --darkred: #8C0000;
  --radius: 14px;
  --radius-sm: 8px;
  --max-w: 1100px;
}

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

html { background: #0B0B0B; }

body {
  background: linear-gradient(180deg, #0B0B0B 0%, #0F0F10 35%, #141516 70%, #17181A 100%);
  background-attachment: fixed;
  color: var(--text);
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; transition: opacity 0.2s; }
a:hover { opacity: 0.8; }

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

/* ── Header / Navbar ── */
header {
  background: linear-gradient(180deg, rgba(38,38,38,0.95) 0%, rgba(26,26,26,0.98) 100%);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--bg-surface);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0 1.5rem;
}

nav {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  gap: 1.5rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.nav-brand svg { width: 32px; height: 32px; flex-shrink: 0; }

.nav-links {
  display: flex;
  gap: 0.25rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-dim);
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s, background 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  background: var(--accent-soft);
}

/* Language switcher */
.lang-switch {
  display: flex;
  gap: 0;
  margin-left: 0.75rem;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--bg-surface);
}

.lang-switch button {
  background: transparent;
  color: var(--text-dim);
  border: none;
  padding: 0.3rem 0.55rem;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  letter-spacing: 0.05em;
}

.lang-switch button:not(:last-child) { border-right: 1px solid var(--bg-surface); }
.lang-switch button:hover { color: var(--text); }
.lang-switch button.active {
  background: var(--accent);
  color: var(--bg-primary);
}

/* ── Hero ── */
.hero {
  padding: 5rem 1.5rem 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 10%;
  left: 50%;
  width: 600px;
  height: 600px;
  transform: translate(-50%, -30%);
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-logo { width: 100px; height: 100px; margin: 0 auto 1.5rem; position: relative; }

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.03em;
  position: relative;
}

.hero h1 span { color: var(--accent); }

.hero p {
  color: var(--text-dim);
  font-size: 1.15rem;
  margin-top: 1rem;
  max-width: 550px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2rem;
  padding: 0.85rem 2.2rem;
  background: var(--accent);
  color: var(--bg-primary);
  border: 1px solid var(--bg-surface);
  border-radius: var(--radius-sm);
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
  position: relative;
  text-decoration: none;
}

.hero-cta:hover {
  background: var(--bg-panel);
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-1px);
}

.hero-cta svg { width: 20px; height: 20px; }

/* ── Section Layout ── */
section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.section-title {
  font-size: 1.6rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.section-sub {
  text-align: center;
  color: var(--text-dim);
  margin-bottom: 2.5rem;
  font-size: 0.95rem;
}

/* ── Card ── */
.card {
  background: linear-gradient(135deg, #151617 0%, #1C1E20 28%, #2A2C2E 52%, #2F3134 85%);
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.3s;
  box-shadow: 0 6px 15px rgba(0,0,0,0.28);
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(180deg, #3A3E42 0%, #1B1D1F 60%, #0F1011 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 25%;
  background: linear-gradient(180deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.03) 8%, transparent 25%);
  border-radius: var(--radius) var(--radius) 0 0;
  pointer-events: none;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.35);
}

.card-accent {
  border-top: 2.5px solid var(--accent);
}

/* ── Features Grid ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.feature-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 0.75rem;
  color: var(--accent);
}

.feature-icon svg { width: 100%; height: 100%; }

.feature-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: var(--text);
}

.feature-card p {
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.5;
}

.feature-link {
  display: inline-block;
  margin-top: 0.6rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
}

.feature-link:hover { text-decoration: underline; }

/* ── Footer ── */
footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--bg-surface);
  padding: 2.5rem 1.5rem 2rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-dim);
}

footer .nav-links { justify-content: center; flex-wrap: wrap; margin-bottom: 1rem; }

footer .copyright { opacity: 0.6; }

/* ── Download Page ── */
.dl-hero {
  padding: 4rem 1.5rem 2rem;
  max-width: var(--max-w);
  margin: 0 auto;
  text-align: center;
}

.dl-card {
  max-width: 480px;
  margin: 0 auto;
  text-align: left;
}

.version-badge {
  display: inline-block;
  background: var(--accent);
  color: var(--bg-primary);
  padding: 0.2rem 0.7rem;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.dl-card h1 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.dl-card .meta {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-bottom: 1rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.sha-line {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 1.5rem;
  padding: 0.5rem 0;
  border-top: 1px solid var(--bg-surface);
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: baseline;
}

.sha-line span {
  font-weight: 600;
  flex-shrink: 0;
}

.sha-line code {
  font-family: 'Cascadia Code', 'Fira Code', 'JetBrains Mono', Consolas, monospace;
  color: var(--text-dim);
  word-break: break-all;
  font-size: 0.7rem;
  letter-spacing: -0.02em;
}

.dl-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.9rem;
  background: var(--accent);
  color: var(--bg-primary);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s;
  text-decoration: none;
  margin-bottom: 0.75rem;
}

.dl-btn:hover {
  background: var(--bg-panel);
  color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent);
}

.dl-btn svg { width: 22px; height: 22px; flex-shrink: 0; }

.dl-info {
  margin-top: 2.5rem;
  text-align: left;
}

.dl-info h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.dl-info ol {
  padding-left: 1.25rem;
  color: var(--text-dim);
  font-size: 0.88rem;
}

.dl-info ol li { margin-bottom: 0.4rem; }

.dl-info ol li strong { color: var(--text); }

.requirements {
  margin-top: 1.5rem;
  padding: 1rem;
  background: var(--bg-panel);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text-dim);
}

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

/* ── Changelog ── */
.changelog {
  max-width: 720px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.changelog h1 {
  font-size: 2rem;
  text-align: center;
  margin-bottom: 2.5rem;
}

.changelog-entry {
  margin-bottom: 2.5rem;
  position: relative;
  padding-left: 1.5rem;
  border-left: 2px solid var(--bg-surface);
}

.changelog-entry::before {
  content: '';
  position: absolute;
  left: -6px;
  top: 0.4rem;
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-glow);
}

.ch-version {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.2rem;
}

.ch-date {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 0.8rem;
}

.ch-notes {
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.7;
}

.ch-notes ul {
  padding-left: 1.2rem;
  margin: 0.5rem 0;
}

.ch-notes li {
  margin-bottom: 0.3rem;
  padding-left: 0.25rem;
}

.ch-notes li::marker { color: var(--accent); }

.ch-tag {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  border-radius: 100px;
  font-size: 0.7rem;
  font-weight: 700;
  margin-right: 0.4rem;
  vertical-align: middle;
}

.ch-tag-new { background: var(--accent-soft); color: var(--accent); }
.ch-tag-fix { background: #3A2A00; color: var(--orange); }
.ch-tag-imp { background: #1A1A30; color: #2979FF; }

/* ── Not Found / Status ── */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.8rem;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
}

.status-ok { background: var(--accent-soft); color: var(--accent); }

/* ── Responsive ── */
@media (max-width: 768px) {
  html { background-attachment: scroll; }
  body {
    background-attachment: scroll;
    min-height: 100dvh;
    overflow-x: hidden;
  }
  nav {
    flex-wrap: wrap;
    height: auto;
    padding: 0.75rem 0;
    justify-content: center;
  }
  .nav-links {
    flex: 1 0 100%;
    flex-wrap: wrap;
    justify-content: center;
  }
  .features-grid { grid-template-columns: 1fr; }
  .hero { padding: 3rem 1rem 2.5rem; }
  section { padding: 2.5rem 1rem; }
}

@media (max-width: 480px) {
  .nav-links { gap: 0; }
  .nav-links a { padding: 0.35rem 0.55rem; font-size: 0.82rem; }
  .lang-switch { margin-left: 0.25rem; }
}

/* ── Guide / Instructions Page ── */
.guide section { padding: 1.5rem 1.5rem; }

.guide-number {
  width: 38px;
  height: 38px;
  background: var(--accent);
  color: var(--bg-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
  line-height: 1;
}

.guide h2 { font-size: 1.3rem; margin-bottom: 0.75rem; }

.guide h3 {
  font-size: 1.05rem;
  margin: 1.2rem 0 0.5rem;
  color: var(--text);
}

.guide p {
  color: var(--text-dim);
  font-size: 0.92rem;
  margin-bottom: 0.75rem;
  line-height: 1.65;
}

.guide ul, .guide ol {
  color: var(--text-dim);
  font-size: 0.9rem;
  padding-left: 1.3rem;
  margin-bottom: 0.75rem;
  line-height: 1.65;
}

.guide ul li, .guide ol li { margin-bottom: 0.35rem; }

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

/* Alert badges */
.guide-alerts {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin: 0.75rem 0 1rem;
}

.guide-alert {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
}

.guide-alert.warn {
  background: #3A2A00;
  color: var(--orange);
  border: 1px solid var(--orange);
}

.guide-alert.urgent {
  background: #3D0000;
  color: #CC4444;
  border: 1px solid #CC4444;
}

/* Tip box */
.guide-tip {
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  padding: 0.8rem 1rem;
  margin: 1rem 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.55;
}

.guide-tip strong { color: var(--accent); }

/* Note box */
.guide-note {
  background: var(--bg-panel);
  border-left: 3px solid var(--accent);
  padding: 0.8rem 1rem;
  margin: 1rem 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.55;
}

/* Two-column compare */
.guide-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 0.75rem 0 1rem;
}

.guide-col {
  background: var(--bg-panel);
  border-radius: var(--radius-sm);
  padding: 1rem;
}

.guide-col.on { border-top: 2px solid #4CAF50; }
.guide-col.off { border-top: 2px solid var(--text-dim); }

.guide-col h3 { margin-top: 0; margin-bottom: 0.5rem; font-size: 0.95rem; }
.guide-col ul { color: var(--text-dim); font-size: 0.82rem; padding-left: 1rem; }
.guide-col li { margin-bottom: 0.3rem; }

/* GPS two-column grid */
.guide-gps-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 0.75rem 0 1rem;
}

.guide-steps li { margin-bottom: 0.6rem; }

/* Order number style override */
.guide ol li::marker {
  color: var(--accent);
  font-weight: 600;
}

@media (max-width: 600px) {
  .guide-compare,
  .guide-gps-grid {
    grid-template-columns: 1fr;
  }
  .guide-alerts { flex-direction: column; }
  .guide-banner .hero-cta { width: 100%; text-align: center; justify-content: center; }
}

/* ── Guide Banner (home) ── */
.guide-banner {
  margin-top: 1.5rem;
  text-align: center;
  padding: 2rem 1.5rem;
}

.guide-banner h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.guide-banner p {
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-bottom: 1.25rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.guide-banner .hero-cta {
  display: inline-flex;
  padding: 0.65rem 1.5rem;
  font-size: 0.95rem;
}

/* ── Guide Link (download page) ── */
.guide-link {
  display: block;
  text-align: center;
  padding: 0.85rem;
  margin-top: 0.5rem;
  color: var(--accent);
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  transition: background 0.2s;
  text-decoration: none;
}

.guide-link:hover {
  background: var(--accent-soft);
}

/* ── Galeria ── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.gallery-item {
  margin: 0;
  background: linear-gradient(135deg, #151617 0%, #1C1E20 28%, #2A2C2E 52%, #2F3134 85%);
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 0.75rem;
  overflow: hidden;
  box-shadow: 0 6px 15px rgba(0,0,0,0.28);
}

.gallery-item img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--bg-surface);
  display: block;
  transition: transform 0.25s ease;
}

.gallery-item:hover img {
  transform: scale(1.02);
}

.gallery-item figcaption {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
  padding: 0.6rem 0.25rem 0.2rem;
}

.media-video {
  width: 100%;
  max-width: 760px;
  display: block;
  margin: 0 auto;
  border-radius: var(--radius);
  border: 1px solid var(--bg-surface);
  box-shadow: 0 6px 15px rgba(0,0,0,0.28);
  background: #000;
  overflow: hidden;
}