/* TrailPaint site-wide styles — shared between index, features/*, examples, faq */

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: #1c0a00;
  color: #fde68a;
  font-family: Georgia, 'Noto Serif TC', serif;
  min-height: 100vh;
  line-height: 1.6;
}

a { color: #d4a574; text-decoration: none; border-bottom: 1px solid rgba(212,165,116,0.3); }
a:hover { border-bottom-color: #d4a574; }

/* ── Navigation ── */
.site-nav {
  background: rgba(28,10,0,0.9);
  border-bottom: 1px solid rgba(212,165,116,0.15);
  padding: 1rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.site-nav-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.site-nav .brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: #fde68a;
  border-bottom: none;
}
.site-nav .brand:hover { color: #ffd180; }
.site-nav-links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  font-size: 0.95rem;
}
.site-nav-links a { border-bottom: none; color: #d4a574; }
.site-nav-links a:hover { color: #fde68a; }
.site-nav-links a.active { color: #fde68a; }
@media (max-width: 600px) {
  .site-nav-links { gap: 0.9rem; font-size: 0.9rem; }
  .site-nav .brand { font-size: 1rem; }
}

/* ── Hero ── */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 80vh;
  padding: 3rem 1.5rem;
  text-align: center;
}
.hero .logo { font-size: 64px; margin-bottom: 0.5rem; }
.hero h1 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: 0.02em;
}
.tagline {
  font-size: 1.1rem;
  color: #d4a574;
  margin-bottom: 2rem;
  line-height: 1.6;
}
.example-img {
  width: 100%;
  max-width: 560px;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  margin-bottom: 2rem;
}
.features {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 2.5rem;
  max-width: 560px;
}
.feat {
  background: rgba(253,230,138,0.08);
  border: 1px solid rgba(253,230,138,0.15);
  border-radius: 8px;
  padding: 0.5rem 1rem;
  font-size: 0.95rem;
  color: #fde68a;
}
.cta {
  display: inline-block;
  background: #78350f;
  color: #fde68a;
  text-decoration: none;
  font-size: 1.2rem;
  font-weight: 700;
  padding: 0.9rem 2.5rem;
  border-radius: 10px;
  transition: background 0.2s, transform 0.15s;
  border-bottom: none;
}
.cta:hover { background: #92400e; transform: translateY(-1px); border-bottom: none; }
.cta--ghost { background: #3b1a06; }
.cta--ghost:hover { background: #52260b; }

.links {
  font-size: 0.9rem;
  color: #a08060;
}

/* ── Content sections (for subpages) ── */
.page {
  max-width: 760px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
  color: #d4a574;
}
.page h1 {
  color: #fde68a;
  font-size: 2rem;
  margin-bottom: 0.5rem;
  font-weight: 700;
}
.page .subtitle {
  color: #a08060;
  margin-bottom: 2rem;
  font-size: 1.05rem;
}
.page h2 {
  color: #fde68a;
  font-size: 1.4rem;
  margin: 2.5rem 0 0.8rem;
  border-bottom: 1px solid rgba(212,165,116,0.2);
  padding-bottom: 0.4rem;
}
.page h3 {
  color: #fde68a;
  font-size: 1.1rem;
  margin: 1.6rem 0 0.5rem;
}
.page p { margin-bottom: 1rem; line-height: 1.8; }
.page ul, .page ol { padding-left: 1.5rem; margin-bottom: 1rem; }
.page li { padding: 0.25rem 0; line-height: 1.7; }
.page code {
  background: rgba(253,230,138,0.08);
  border: 1px solid rgba(253,230,138,0.15);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-size: 0.9em;
  color: #fde68a;
}
.page pre {
  background: rgba(253,230,138,0.05);
  border: 1px solid rgba(253,230,138,0.1);
  border-radius: 8px;
  padding: 1rem;
  overflow-x: auto;
  margin-bottom: 1rem;
}
.page pre code {
  background: none;
  border: none;
  padding: 0;
}
.page strong { color: #fde68a; }
.page img {
  max-width: 100%;
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  margin: 1rem 0;
}

/* ── FAQ accordion ── */
.faq-list { margin-top: 1rem; }
.faq-item {
  border: 1px solid rgba(212,165,116,0.2);
  border-radius: 10px;
  padding: 1rem 1.2rem;
  margin-bottom: 0.8rem;
  background: rgba(253,230,138,0.04);
}
.faq-item summary {
  cursor: pointer;
  font-weight: 700;
  color: #fde68a;
  font-size: 1.05rem;
  list-style: none;
  padding-right: 1.5rem;
  position: relative;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "＋";
  position: absolute;
  right: 0;
  top: 0;
  color: #8b6940;
  font-weight: 400;
  transition: transform 0.2s;
}
.faq-item[open] summary::after { content: "－"; }
.faq-item .faq-body {
  margin-top: 0.8rem;
  color: #d4a574;
  line-height: 1.75;
}

/* ── Gallery / cards ── */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin: 1rem 0 2rem;
}
.gallery figure {
  background: rgba(253,230,138,0.04);
  border: 1px solid rgba(212,165,116,0.15);
  border-radius: 10px;
  overflow: hidden;
  margin: 0;
}
.gallery figcaption {
  padding: 0.7rem 0.9rem;
  font-size: 0.9rem;
  color: #d4a574;
}
.gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin: 1rem 0 2rem;
}
.card {
  background: rgba(253,230,138,0.05);
  border: 1px solid rgba(212,165,116,0.18);
  border-radius: 10px;
  padding: 1.2rem;
  transition: border-color 0.2s, transform 0.15s;
  border-bottom: 1px solid rgba(212,165,116,0.18);
  display: block;
  color: inherit;
}
.card:hover {
  border-color: rgba(253,230,138,0.4);
  transform: translateY(-1px);
  border-bottom-color: rgba(253,230,138,0.4);
}
.card h3 { color: #fde68a; font-size: 1.1rem; margin-bottom: 0.4rem; }
.card p { color: #a08060; font-size: 0.95rem; margin: 0; line-height: 1.6; }

/* ── Changelog ── */
.changelog-list {
  list-style: none;
  padding: 0;
}
.changelog-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(212,165,116,0.1);
  font-size: 0.95rem;
  color: #d4a574;
}
.changelog-list li:last-child { border-bottom: none; }
.changelog-list .date {
  color: #8b6940;
  font-family: monospace;
  font-size: 0.85rem;
  margin-right: 0.8rem;
}

/* ── Gallery wall (homepage hero extension) ── */
.gallery-wall {
  max-width: 1100px;
  margin: 0 auto 1rem;
  padding: 0 1rem;
}
.gallery-wall-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.gallery-wall-grid figure {
  margin: 0;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 6px 24px rgba(0,0,0,0.45);
  aspect-ratio: 4 / 3;
}
.gallery-wall-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.gallery-wall-caption {
  text-align: center;
  color: #a08060;
  font-size: 0.95rem;
  margin-top: 1rem;
  font-style: italic;
}
@media (max-width: 640px) {
  .gallery-wall-grid { grid-template-columns: 1fr; }
}

/* ── Bottom CTA ── */
.bottom-cta {
  max-width: 720px;
  margin: 4rem auto 2rem;
  padding: 2.5rem 1.5rem;
  text-align: center;
  background: rgba(253,230,138,0.05);
  border: 1px solid rgba(212,165,116,0.2);
  border-radius: 16px;
}
.bottom-cta h2 {
  color: #fde68a;
  font-size: 1.6rem;
  margin-bottom: 0.8rem;
  border-bottom: none;
  padding-bottom: 0;
}
.bottom-cta p {
  color: #d4a574;
  font-size: 1rem;
  line-height: 1.8;
}

/* ── Footer ── */
.footer {
  padding: 2rem 1.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: #6b5540;
  border-top: 1px solid rgba(212,165,116,0.1);
  margin-top: 3rem;
}
.footer a { color: #8b6940; border-bottom-color: rgba(139,105,64,0.3); }
.footer a:hover { color: #d4a574; }