/* ===== CodeHub theme ===== */
:root {
  --bg: #0b0d12;
  --bg-2: #11141b;
  --bg-3: #1a1f29;
  --border: #232a36;
  --text: #e6ebf2;
  --muted: #8a96a8;
  --blue: #4f9eff;
  --orange: #ff8a3d;
  --green: #5ed99c;
  --red: #ff6b6b;
  --yellow: #ffcc44;
  --purple: #c896ff;
  --pink: #ff8ad1;
  --teal: #5ed9d9;
  --gradient: linear-gradient(135deg, #4f9eff 0%, #c896ff 50%, #ff8ad1 100%);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans Thai", sans-serif;
  background: linear-gradient(180deg, var(--bg) 0%, #060709 100%);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: 'JetBrains Mono', 'Fira Code', Menlo, Consolas, monospace; background: rgba(255,255,255,.06); padding: 1px 6px; border-radius: 4px; font-size: .9em; }
pre { background: var(--bg-2); border: 1px solid var(--border); border-radius: 8px; padding: 16px; overflow-x: auto; font-family: 'JetBrains Mono', Menlo, Consolas, monospace; font-size: 13px; line-height: 1.6; }
pre code { background: none; padding: 0; font-size: 13px; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

/* ===== Nav ===== */
.nav { position: sticky; top: 0; z-index: 100; background: rgba(11,13,18,.85); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.nav .inner { max-width: 1180px; margin: 0 auto; padding: 12px 24px; display: flex; align-items: center; gap: 24px; }
.nav .brand { font-weight: 700; font-size: 18px; display: flex; align-items: center; gap: 8px; }
.nav .brand .logo { width: 28px; height: 28px; border-radius: 6px; background: var(--gradient); display: inline-flex; align-items: center; justify-content: center; font-size: 16px; }
.nav a.nav-link { color: var(--muted); font-size: 14px; font-weight: 500; padding: 6px 12px; border-radius: 6px; }
.nav a.nav-link:hover { background: var(--bg-3); color: var(--text); text-decoration: none; }
.nav .spacer { flex: 1; }
.nav .search { background: var(--bg-3); border: 1px solid var(--border); border-radius: 6px; padding: 6px 12px; color: var(--text); font-size: 13px; width: 200px; outline: none; }
.nav .search:focus { border-color: var(--blue); }

/* ===== Hero ===== */
.hero { padding: 80px 0 60px; text-align: center; background: radial-gradient(circle at top, rgba(79,158,255,.18), transparent 60%); border-bottom: 1px solid var(--border); }
.hero h1 { font-size: 56px; font-weight: 800; line-height: 1.1; margin: 0 0 16px; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero .sub { font-size: 20px; color: var(--muted); max-width: 720px; margin: 0 auto 32px; }
.hero .badges { display: inline-flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 32px; }
.hero .badge { display: inline-block; padding: 6px 14px; border-radius: 999px; background: rgba(79,158,255,.15); color: var(--blue); font-size: 13px; font-weight: 500; border: 1px solid rgba(79,158,255,.25); }
.hero .stats { display: flex; justify-content: center; gap: 48px; margin-top: 24px; flex-wrap: wrap; }
.hero .stat { text-align: center; }
.hero .stat .n { font-size: 36px; font-weight: 800; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero .stat .l { font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; }
.hero .cta { display: flex; gap: 12px; justify-content: center; margin-top: 32px; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 20px; border-radius: 8px; font-weight: 600; font-size: 14px; cursor: pointer; border: 1px solid transparent; transition: all .15s; }
.btn-primary { background: var(--gradient); color: #0b0d12; }
.btn-primary:hover { transform: translateY(-1px); text-decoration: none; box-shadow: 0 8px 24px rgba(79,158,255,.25); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: var(--bg-3); text-decoration: none; }

/* ===== Sections ===== */
.section { padding: 60px 0; border-bottom: 1px solid var(--border); }
.section h2 { font-size: 32px; font-weight: 700; margin: 0 0 8px; }
.section .sub { color: var(--muted); margin: 0 0 32px; font-size: 16px; }

/* ===== Category nav ===== */
.cat-nav { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 32px; }
.cat-nav button { background: var(--bg-3); border: 1px solid var(--border); color: var(--text); padding: 8px 16px; border-radius: 999px; cursor: pointer; font-size: 13px; font-weight: 500; transition: all .15s; }
.cat-nav button:hover { border-color: var(--blue); color: var(--blue); }
.cat-nav button.active { background: var(--blue); color: #0b0d12; border-color: var(--blue); }

/* ===== Project grid ===== */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 20px; }
.card { background: var(--bg-2); border: 1px solid var(--border); border-radius: 12px; padding: 20px; transition: all .2s; position: relative; overflow: hidden; }
.card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--accent, var(--blue)); }
.card:hover { border-color: var(--blue); transform: translateY(-2px); box-shadow: 0 12px 32px rgba(0,0,0,.4); }
.card .icon { font-size: 32px; margin-bottom: 12px; }
.card h3 { margin: 0 0 6px; font-size: 18px; font-weight: 700; }
.card h3 a { color: var(--text); }
.card h3 a:hover { color: var(--blue); text-decoration: none; }
.card .cat { display: inline-block; padding: 2px 10px; border-radius: 999px; background: var(--bg-3); color: var(--muted); font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: .5px; margin-bottom: 12px; }
.card .desc { color: var(--muted); font-size: 14px; margin: 0 0 16px; min-height: 42px; }
.card .meta { display: flex; flex-wrap: wrap; gap: 12px; font-size: 12px; color: var(--muted); padding-top: 12px; border-top: 1px solid var(--border); }
.card .meta span { display: inline-flex; align-items: center; gap: 4px; }
.card .tags { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 12px; }
.card .tag { font-size: 11px; padding: 2px 8px; background: rgba(79,158,255,.08); border: 1px solid rgba(79,158,255,.18); color: var(--blue); border-radius: 4px; }
.card .shot { width: 100%; aspect-ratio: 16/9; border-radius: 8px; background: var(--bg-3); margin-bottom: 12px; border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; color: var(--muted); font-size: 12px; overflow: hidden; }
.card .shot img { width: 100%; height: 100%; object-fit: cover; }

/* ===== Version section (project detail) ===== */
.version { padding: 32px 0; border-top: 1px solid var(--border); scroll-margin-top: 80px; }
.version:first-of-type { border-top: none; }
.version .v-head { display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap; margin-bottom: 16px; }
.version .v-tag { display: inline-block; padding: 4px 12px; border-radius: 6px; background: var(--accent, var(--blue)); color: #0b0d12; font-size: 14px; font-weight: 700; font-family: 'JetBrains Mono', monospace; }
.version .v-date { color: var(--muted); font-size: 13px; font-family: 'JetBrains Mono', monospace; }
.version .v-status { padding: 2px 10px; border-radius: 4px; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .5px; background: var(--bg-3); color: var(--muted); }
.version .v-status.released { background: rgba(94,217,156,.15); color: var(--green); }
.version .v-status.beta { background: rgba(255,204,68,.15); color: var(--yellow); }
.version h3 { font-size: 24px; font-weight: 700; margin: 0; flex: 1; }
.version .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 16px; }
.version .panel { background: var(--bg-2); border: 1px solid var(--border); border-radius: 10px; padding: 18px; }
.version .panel h4 { margin: 0 0 10px; font-size: 13px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); display: flex; align-items: center; gap: 8px; }
.version .panel.user h4 { color: var(--orange); }
.version .panel.ai h4 { color: var(--blue); }
.version .panel p { margin: 0 0 8px; font-size: 14px; }
.version .panel .quote { font-size: 13px; color: var(--text); padding: 10px 12px; background: rgba(255,255,255,.03); border-left: 3px solid var(--accent, var(--blue)); border-radius: 4px; margin: 0; }
.version .what { margin-top: 16px; background: var(--bg-2); border: 1px solid var(--border); border-radius: 10px; padding: 18px; }
.version .what h4 { margin: 0 0 12px; font-size: 13px; text-transform: uppercase; letter-spacing: 1px; color: var(--green); display: flex; align-items: center; gap: 8px; }
.version .what ul { margin: 0; padding-left: 20px; }
.version .what li { margin: 6px 0; font-size: 14px; color: var(--text); }
.version .stats-bar { display: flex; gap: 16px; margin-top: 16px; padding: 12px 18px; background: var(--bg-3); border-radius: 8px; font-size: 13px; color: var(--muted); flex-wrap: wrap; }
.version .stats-bar b { color: var(--text); font-family: 'JetBrains Mono', monospace; }
.version .screens { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; margin-top: 16px; }
.version .screens .shot { aspect-ratio: 16/10; background: var(--bg-3); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.version .screens img { width: 100%; height: 100%; object-fit: cover; }
.version .deploy-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 12px; padding: 6px 12px; background: rgba(94,217,156,.12); border: 1px solid rgba(94,217,156,.25); color: var(--green); border-radius: 6px; font-size: 13px; font-weight: 600; }
.version .deploy-link:hover { background: rgba(94,217,156,.2); text-decoration: none; }

/* ===== TOC (sidebar on project page) ===== */
.project-layout { display: grid; grid-template-columns: 240px 1fr; gap: 40px; margin-top: 24px; }
@media (max-width: 880px) { .project-layout { grid-template-columns: 1fr; } .toc { position: static; } }
.toc { position: sticky; top: 80px; align-self: start; max-height: calc(100vh - 100px); overflow-y: auto; padding: 16px; background: var(--bg-2); border: 1px solid var(--border); border-radius: 10px; }
.toc h4 { margin: 0 0 12px; font-size: 12px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); }
.toc ul { list-style: none; padding: 0; margin: 0; }
.toc li { margin: 4px 0; }
.toc a { display: flex; align-items: center; gap: 8px; padding: 6px 10px; border-radius: 6px; color: var(--muted); font-size: 13px; font-family: 'JetBrains Mono', monospace; }
.toc a:hover { background: var(--bg-3); color: var(--text); text-decoration: none; }
.toc a.active { background: rgba(79,158,255,.15); color: var(--blue); }

/* ===== Project header ===== */
.proj-head { padding: 60px 0 40px; border-bottom: 1px solid var(--border); background: radial-gradient(circle at top right, var(--accent-glow, rgba(79,158,255,.15)), transparent 60%); }
.proj-head .crumbs { font-size: 13px; color: var(--muted); margin-bottom: 16px; }
.proj-head .crumbs a { color: var(--muted); }
.proj-head h1 { font-size: 48px; font-weight: 800; margin: 0 0 8px; display: flex; align-items: center; gap: 16px; }
.proj-head .icon-big { font-size: 48px; }
.proj-head .desc { font-size: 18px; color: var(--muted); max-width: 720px; margin: 0 0 20px; }
.proj-head .meta-row { display: flex; flex-wrap: wrap; gap: 16px; font-size: 14px; color: var(--muted); margin-top: 16px; }
.proj-head .meta-row b { color: var(--text); }
.proj-head .tag-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }

/* ===== Footer ===== */
.foot { padding: 40px 0; text-align: center; color: var(--muted); font-size: 13px; border-top: 1px solid var(--border); margin-top: 60px; }
.foot a { color: var(--muted); }
.foot a:hover { color: var(--blue); }

/* ===== AI instructions page ===== */
.ai-page { padding: 40px 0; }
.ai-page pre.ai { white-space: pre-wrap; word-wrap: break-word; font-size: 13px; max-height: none; }
.ai-page .copy-btn { position: sticky; top: 80px; margin-left: 12px; }

/* ===== Code file viewer (in version detail) ===== */
.code-files { margin-top: 16px; background: var(--bg-2); border: 1px solid var(--border); border-radius: 10px; padding: 16px; }
.code-files h4 { margin: 0 0 12px; font-size: 13px; text-transform: uppercase; letter-spacing: 1px; color: var(--purple); }
.code-files .file-list { display: flex; flex-wrap: wrap; gap: 6px; }
.code-files .file { background: var(--bg-3); border: 1px solid var(--border); padding: 4px 10px; border-radius: 4px; font-size: 12px; font-family: 'JetBrains Mono', monospace; color: var(--muted); }

/* ===== Search ===== */
.search-results { margin-top: 24px; }
.search-results .result { padding: 16px; background: var(--bg-2); border: 1px solid var(--border); border-radius: 8px; margin-bottom: 12px; }
.search-results .result h4 { margin: 0 0 4px; }
.search-results .result .ctx { color: var(--muted); font-size: 13px; }

/* utility */
.mono { font-family: 'JetBrains Mono', monospace; }
.flex { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.muted { color: var(--muted); }
.mt-2 { margin-top: 16px; }
.mt-4 { margin-top: 32px; }
.mb-2 { margin-bottom: 16px; }
.text-center { text-align: center; }