/* ctrlvim landing page — Tokyo Night inspired dark theme */

:root {
  --bg:        #1a1b26;
  --bg-dark:   #16161e;
  --bg-card:   #24283b;
  --bg-highlight: #292e42;
  --fg:        #c0caf5;
  --fg-dim:    #565f89;
  --accent:    #7aa2f7;
  --accent2:   #bb9af7;
  --green:     #9ece6a;
  --red:       #f7768e;
  --cyan:      #7dcfff;
  --orange:    #ff9e64;
  --border:    #3b4261;
  --radius:    8px;
  --font:      'SF Mono', 'Cascadia Code', 'Fira Code', 'JetBrains Mono', monospace;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

code {
  font-family: var(--font);
  font-size: 0.88em;
  background: var(--bg-highlight);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── topbar ── */

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(26, 27, 38, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.logo {
  font-family: var(--font);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--fg);
  letter-spacing: -0.02em;
}

.logo:hover { color: var(--accent); text-decoration: none; }

.topbar-links {
  display: flex;
  gap: 28px;
  align-items: center;
}

.topbar-links a {
  color: var(--fg-dim);
  font-size: 0.9rem;
  transition: color 0.15s;
}

.topbar-links a:hover { color: var(--fg); text-decoration: none; }

.github-link {
  background: var(--bg-highlight);
  padding: 6px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  font-family: var(--font);
  font-size: 0.82rem !important;
}

.github-link:hover { border-color: var(--accent); }

/* ── hero ── */

.hero {
  padding: 100px 0 60px;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font);
  font-size: 0.78rem;
  color: var(--accent);
  background: rgba(122, 162, 247, 0.1);
  border: 1px solid rgba(122, 162, 247, 0.25);
  padding: 4px 16px;
  border-radius: 999px;
  margin-bottom: 28px;
  letter-spacing: 0.08em;
}

.hero h1 {
  font-size: clamp(2.4rem, 5.5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.accent { color: var(--accent); }

.hero-sub {
  font-size: 1.12rem;
  color: var(--fg-dim);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  font-family: var(--font);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius);
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

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

.btn-primary:hover {
  background: #89b4fa;
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

.hero-code {
  margin-top: 48px;
  text-align: left;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
}

.hero-code pre {
  margin: 0;
  font-family: var(--font);
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--fg);
}

.dim { color: var(--fg-dim); }

/* ── sections ── */

.section {
  padding: 80px 0;
}

.section-dark {
  background: var(--bg-dark);
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.section-sub {
  text-align: center;
  color: var(--fg-dim);
  margin-bottom: 48px;
  font-size: 1.05rem;
}

/* ── features grid ── */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 18px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: border-color 0.2s;
}

.feature-card:hover { border-color: var(--accent); }

.feature-icon {
  font-size: 1.5rem;
  margin-bottom: 12px;
  color: var(--accent2);
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.88rem;
  color: var(--fg-dim);
  line-height: 1.6;
}

/* ── architecture table ── */

.arch-table-wrap {
  overflow-x: auto;
  margin-bottom: 48px;
}

.arch-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.arch-table th,
.arch-table td {
  text-align: left;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
}

.arch-table th {
  font-family: var(--font);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fg-dim);
  background: var(--bg);
}

.arch-table td:first-child {
  font-family: var(--font);
  color: var(--cyan);
  white-space: nowrap;
}

.arch-table tr:hover td { background: rgba(59, 66, 97, 0.25); }

/* ── design notes ── */

.design-notes h3 {
  font-size: 1.2rem;
  margin-bottom: 18px;
  text-align: center;
}

.notes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}

.note-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  font-size: 0.9rem;
  color: var(--fg-dim);
  line-height: 1.6;
}

.note-card strong { color: var(--fg); }

/* ── quickstart steps ── */

.steps {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.step {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.step-num {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font);
  font-weight: 700;
  font-size: 0.88rem;
  border-radius: 50%;
}

.step-content h4 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.step-content pre {
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  overflow-x: auto;
}

.step-content pre code {
  background: none;
  padding: 0;
  font-size: 0.82rem;
  line-height: 1.7;
}

/* ── CTA section ── */

.section-cta {
  text-align: center;
  background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg) 100%);
}

.section-cta h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.section-cta p {
  color: var(--fg-dim);
  margin-bottom: 28px;
  font-size: 1.05rem;
}

/* ── footer ── */

.footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--fg-dim);
}

.footer a { color: var(--fg-dim); }
.footer a:hover { color: var(--fg); }

/* ── responsive ── */

@media (max-width: 640px) {
  .topbar-links a:not(.github-link) { display: none; }
  .hero { padding: 60px 0 40px; }
  .hero h1 { font-size: 2rem; }
  .section { padding: 50px 0; }
  .features-grid { grid-template-columns: 1fr; }
  .notes-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 8px; }
}