/* Hash Markup landing page. Dev-minimal, dark-by-default. */

:root {
  --bg: #0a0a0c;
  --bg-elev: #131318;
  --bg-elev-2: #1c1c24;
  --border: #2a2a34;
  --fg: #ededf2;
  --fg-dim: #a0a0aa;
  --fg-mute: #6a6a74;
  --accent: #8b9eff;
  --accent-hover: #a3b3ff;
  --shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.6);
  --radius: 10px;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, Inter, sans-serif;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
}
a:hover {
  color: var(--accent-hover);
}

main {
  display: block;
}

/* ---------------- Top bar ---------------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1.5rem;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--fg);
  font-family: var(--mono);
  font-size: 1.05rem;
}
.brand:hover {
  color: var(--fg);
}
.brand img {
  border-radius: 6px;
}

.brand-name {
  font-weight: 600;
}

.version-badge {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--fg-dim);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  margin-left: 0.35rem;
}

.topnav {
  display: flex;
  gap: 1.5rem;
  font-size: 0.93rem;
}
.topnav a {
  color: var(--fg-dim);
}
.topnav a:hover {
  color: var(--fg);
}

/* ---------------- Hero ---------------- */

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  max-width: 1180px;
  margin: 0 auto;
  padding: 6rem 1.5rem 4rem;
}

.hero h1 {
  font-family: var(--mono);
  font-size: clamp(2.2rem, 4.6vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 1.2rem;
  color: var(--fg);
  font-weight: 600;
}

.lede {
  font-size: 1.12rem;
  color: var(--fg-dim);
  max-width: 32rem;
  margin: 0 0 2rem;
}

.cta-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
}

.cta-sub {
  color: var(--fg-mute);
  font-size: 0.9rem;
  font-family: var(--mono);
  margin-top: 0.85rem;
  margin-bottom: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.2rem;
  border-radius: var(--radius);
  font-weight: 500;
  font-size: 0.96rem;
  border: 1px solid transparent;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.05s ease;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}
.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--fg);
  color: var(--bg);
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--bg);
}

.btn-ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--border);
}
.btn-ghost:hover {
  background: var(--bg-elev);
  color: var(--fg);
  border-color: var(--fg-mute);
}

.hero-shot {
  margin: 0;
  display: block;
}
.hero-shot img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  display: block;
}

/* Stylized editor mockup used until real screenshots are captured. */
.hero-shot-mock {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.hero-shot-titlebar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 0.9rem;
  background: var(--bg-elev-2);
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--fg-mute);
}
.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}
.dot-r { background: #ff5f57; }
.dot-y { background: #febc2e; }
.dot-g { background: #28c840; }
.hero-shot-title {
  margin-left: 0.5rem;
}
.hero-shot-body {
  padding: 1.4rem 1.6rem;
  font-family: var(--mono);
  font-size: 0.86rem;
  color: var(--fg-dim);
  min-height: 280px;
}
.hero-shot-body pre {
  margin: 0;
  white-space: pre-wrap;
  line-height: 1.6;
  color: var(--fg-dim);
}
.hero-shot-body .hash { color: var(--accent); }
.hero-shot-body .h1 { color: var(--fg); font-weight: 600; }
.hero-shot-body em { color: var(--fg); font-style: normal; background: rgba(139,158,255,0.12); padding: 0 4px; border-radius: 3px; }
.hero-shot-body .check { color: var(--accent); }
.hero-shot-body .kw { color: #c8a4ff; }
.hero-shot-body .fn { color: var(--accent); }
.hero-shot-body .str { color: #9ecbff; }

/* ---------------- Sections ---------------- */

section {
  max-width: 1180px;
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.section-title {
  font-family: var(--mono);
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  color: var(--fg);
  margin: 0 0 2rem;
  font-weight: 600;
}
.section-title::before {
  content: "# ";
  color: var(--accent);
}

/* ---------------- Features ---------------- */

.feature-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.feature-grid li {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.4rem 1.6rem;
}
.feature-grid h3 {
  font-family: var(--mono);
  font-size: 1rem;
  margin: 0 0 0.6rem;
  font-weight: 600;
  color: var(--fg);
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: baseline;
}
.feature-grid p {
  margin: 0;
  color: var(--fg-dim);
  font-size: 0.93rem;
  line-height: 1.55;
}

.kbd {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--fg-dim);
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  padding: 0.05rem 0.4rem;
  border-radius: 4px;
  vertical-align: middle;
}

/* ---------------- Trust ---------------- */

.trust {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.trust p {
  max-width: 50rem;
  color: var(--fg-dim);
  margin: 0 0 1rem;
}
.trust .aside {
  font-size: 0.9rem;
  color: var(--fg-mute);
  background: var(--bg-elev);
  border-left: 3px solid var(--accent);
  padding: 0.9rem 1.1rem;
  border-radius: 4px;
  max-width: 50rem;
}

/* ---------------- Downloads ---------------- */

.dl-grid {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.dl-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem 1.4rem 1.4rem;
  text-align: left;
}
.dl-card h3 {
  font-family: var(--mono);
  font-size: 1rem;
  margin: 0 0 0.3rem;
  color: var(--fg);
  font-weight: 600;
}
.dl-card > p {
  margin: 0 0 1.1rem;
  color: var(--fg-dim);
  font-size: 0.92rem;
}
.dl-card .btn {
  width: 100%;
  justify-content: center;
  margin-bottom: 0.7rem;
}
.dl-card .dl-meta {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--fg-mute);
  margin: 0;
  word-break: break-all;
}
.dl-card.recommended {
  border-color: var(--accent);
}
.dl-icon {
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
}

.dl-footnote {
  color: var(--fg-mute);
  font-size: 0.88rem;
  max-width: 60rem;
}

/* ---------------- Footer ---------------- */

.site-foot {
  border-top: 1px solid var(--border);
  padding: 2rem 1.5rem 3rem;
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  color: var(--fg-mute);
  font-size: 0.88rem;
  font-family: var(--mono);
}
.site-foot a {
  color: var(--fg-dim);
}
.site-foot a:hover {
  color: var(--fg);
}

/* ---------------- Responsive ---------------- */

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding-top: 3rem;
  }
  .feature-grid,
  .dl-grid {
    grid-template-columns: 1fr;
  }
  .topnav {
    gap: 1rem;
    font-size: 0.85rem;
  }
}

/* ---------------- Fade-in on scroll ---------------- */

.reveal {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}
.reveal.in {
  opacity: 1;
  transform: none;
}