/* stratosync GitHub Pages — clean, minimal design */
:root {
  --bg:         #0f1117;
  --bg-card:    #181b24;
  --bg-code:    #1e2230;
  --border:     #2a2e3a;
  --text:       #c9cdd6;
  --text-dim:   #7c8291;
  --heading:    #e8ecf2;
  --accent:     #5b9cf5;
  --accent-dim: #3d6eb0;
  --green:      #4ec990;
  --orange:     #e0a458;
  --red:        #e05858;
  --purple:     #a78bfa;
  --max-w:      960px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code, pre,
.code-block, .code-block *,
.arch-diagram, .arch-diagram *,
.tree-block, .tree-block * {
  font-family: "JetBrains Mono", "Fira Code", "Cascadia Code", "SF Mono", Menlo, Consolas, monospace !important;
}

/* ── Nav ──────────────────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(15, 17, 23, .88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: .75rem 1.5rem;
}
.nav-logo {
  font-size: 1.15rem; font-weight: 700; color: var(--heading);
  letter-spacing: -.02em;
}
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; gap: 1.5rem; list-style: none; }
.nav-links a { color: var(--text-dim); font-size: .875rem; transition: color .15s; }
.nav-links a:hover { color: var(--heading); text-decoration: none; }

/* ── Hero ─────────────────────────────────────────────────────────────── */
.hero {
  max-width: var(--max-w); margin: 0 auto;
  padding: 5rem 1.5rem 3.5rem;
  text-align: center;
}
.hero h1 {
  font-size: 2.75rem; font-weight: 800; color: var(--heading);
  letter-spacing: -.03em; line-height: 1.15; margin-bottom: .75rem;
}
.hero h1 span { color: var(--accent); }
.hero .tagline {
  font-size: 1.2rem; color: var(--text-dim); max-width: 600px; margin: 0 auto 1.75rem;
}
.badge-row { display: flex; gap: .5rem; justify-content: center; flex-wrap: wrap; margin-bottom: 2rem; }
.badge {
  display: inline-block;
  font-size: .75rem; font-weight: 600; letter-spacing: .02em;
  padding: .3rem .7rem; border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-dim);
}
.badge.green  { border-color: var(--green);  color: var(--green); }
.badge.orange { border-color: var(--orange); color: var(--orange); }
.badge.purple { border-color: var(--purple); color: var(--purple); }

.hero-buttons { display: flex; gap: .75rem; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .65rem 1.4rem; border-radius: 8px;
  font-size: .9rem; font-weight: 600;
  transition: background .15s, transform .1s;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #4b8de5; }
.btn-secondary { background: var(--bg-card); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--bg-code); }

/* ── Tree diagram ─────────────────────────────────────────────────────── */
.tree-block {
  max-width: 480px; margin: 2.5rem auto 0; text-align: left;
  background: var(--bg-code); border: 1px solid var(--border); border-radius: 10px;
  padding: 1.25rem 1.5rem; font-size: .85rem;
}
.tree-block pre { color: var(--text-dim); white-space: pre; overflow-x: auto; }
.tree-block .hl { color: var(--green); }
.tree-block .dim { color: var(--text-dim); }
.tree-block .file { color: var(--text); }

/* ── Section layout ───────────────────────────────────────────────────── */
section { max-width: var(--max-w); margin: 0 auto; padding: 3.5rem 1.5rem; }
section + section { padding-top: 0; }
.section-title {
  font-size: 1.6rem; font-weight: 700; color: var(--heading);
  margin-bottom: .5rem; letter-spacing: -.02em;
}
.section-sub {
  color: var(--text-dim); margin-bottom: 2rem; font-size: .95rem;
}

/* ── Feature grid ─────────────────────────────────────────────────────── */
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1rem; }
.feature-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px;
  padding: 1.5rem;
}
.feature-card .icon { font-size: 1.5rem; margin-bottom: .5rem; display: block; }
.feature-card h3 { font-size: 1rem; color: var(--heading); margin-bottom: .4rem; }
.feature-card p  { font-size: .85rem; color: var(--text-dim); line-height: 1.55; }

/* ── Comparison table ─────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; margin-bottom: 1rem; }
table {
  width: 100%; border-collapse: collapse;
  font-size: .85rem;
}
th, td { text-align: left; padding: .6rem .85rem; border-bottom: 1px solid var(--border); }
th { color: var(--text-dim); font-weight: 600; font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; }
td { color: var(--text); }
tbody tr:hover { background: var(--bg-card); }
.yes { color: var(--green); font-weight: 600; }
.no  { color: var(--red); }
.partial { color: var(--orange); }
.highlight-row td { color: var(--heading); font-weight: 600; }
.highlight-row td:first-child { color: var(--accent); }

/* ── Code blocks ──────────────────────────────────────────────────────── */
.code-block {
  background: var(--bg-code); border: 1px solid var(--border); border-radius: 10px;
  padding: 1.25rem 1.5rem; overflow-x: auto; margin-bottom: 1.5rem;
}
.code-block pre { font-size: .82rem; line-height: 1.7; color: var(--text); }
.code-block .comment { color: var(--text-dim); }
.code-block .cmd { color: var(--green); }
.code-block .flag { color: var(--orange); }
.code-block .str { color: var(--accent); }
.code-label {
  font-size: .7rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em;
  color: var(--text-dim); margin-bottom: .5rem;
}

/* ── Architecture diagram (HTML boxes) ────────────────────────────────── */
.arch-boxes {
  display: flex; flex-direction: column; align-items: center;
  gap: 0; margin: 1.5rem 0;
}
.arch-box {
  border: 1px solid var(--accent); border-radius: 8px;
  padding: .75rem 1.25rem;
  color: var(--text); font-size: .85rem;
  width: 100%; max-width: 700px;
}
.arch-top {
  text-align: center; color: var(--text-dim);
  background: var(--bg-code);
}
.arch-top .arch-label { color: var(--heading); font-weight: 600; }
.arch-connector {
  display: flex; flex-direction: column; align-items: center;
  color: var(--text-dim); font-size: .8rem; gap: 0;
  padding: 0; position: relative;
}
.arch-connector::before {
  content: '';
  width: 2px; height: 24px;
  background: var(--accent);
}
.arch-connector::after {
  content: '';
  width: 0; height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 8px solid var(--accent);
  margin-bottom: 2px;
}
.arch-daemon, .arch-core {
  background: var(--bg-code);
}
.arch-box-header {
  font-weight: 600; color: var(--heading); margin-bottom: .75rem;
  font-size: .9rem;
}
.arch-box-header .arch-dim { font-weight: 400; color: var(--text-dim); margin-left: 1rem; }
.arch-inner-row {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem;
}
.arch-inner {
  border-color: var(--border); background: var(--bg-card);
  padding: .6rem .8rem; font-size: .8rem;
}
.arch-inner strong { color: var(--heading); font-size: .82rem; display: block; margin-bottom: .25rem; }
.arch-detail { color: var(--text-dim); font-size: .75rem; line-height: 1.5; }
.arch-rclone {
  background: var(--bg-code); text-align: center;
  color: var(--text-dim); max-width: 280px;
}
.arch-rclone-label { color: var(--green); font-weight: 600; }
@media (max-width: 640px) {
  .arch-inner-row { grid-template-columns: 1fr; }
}

/* ── Roadmap ──────────────────────────────────────────────────────────── */
.roadmap { display: grid; gap: 1rem; }
.phase {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px;
  padding: 1.25rem 1.5rem;
  display: grid; grid-template-columns: auto 1fr; gap: 0 1rem; align-items: start;
}
.phase-badge {
  font-size: .7rem; font-weight: 700; text-transform: uppercase;
  padding: .25rem .6rem; border-radius: 6px;
  white-space: nowrap; text-align: center;
  grid-row: 1 / 3;
  margin-top: .15rem;
}
.phase-badge.done     { background: rgba(78,201,144,.15); color: var(--green); }
.phase-badge.current  { background: rgba(91,156,245,.15); color: var(--accent); }
.phase-badge.planned  { background: rgba(42,46,58,.8); color: var(--text-dim); }
.phase h3 { font-size: .95rem; color: var(--heading); margin-bottom: .25rem; }
.phase p  { font-size: .82rem; color: var(--text-dim); line-height: 1.5; }

/* ── Config reference ─────────────────────────────────────────────────── */
.config-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 640px) { .config-grid { grid-template-columns: 1fr; } }

/* ── Footer ───────────────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.5rem; text-align: center;
  font-size: .8rem; color: var(--text-dim);
}
.footer a { color: var(--text-dim); }
.footer a:hover { color: var(--accent); }
.footer-links { display: flex; gap: 1.5rem; justify-content: center; margin-bottom: .75rem; }

/* ── Responsive ───────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .hero h1 { font-size: 2rem; }
  .hero .tagline { font-size: 1.05rem; }
  .nav-links { gap: 1rem; }
  section { padding: 2.5rem 1rem; }
  .features { grid-template-columns: 1fr; }
}