/* ─── Fonts ─── */
@font-face {
  font-family: 'DM Sans';
  src: url('/fonts/dm-sans-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'DM Sans';
  src: url('/fonts/dm-sans-700.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'JetBrains Mono';
  src: url('/fonts/jetbrains-mono-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* ─── Design Tokens (db9-aligned) ─── */
:root {
  --bg: hsl(0, 0%, 4%);
  --fg: hsl(0, 0%, 92%);
  --muted: hsl(0, 0%, 55%);
  --card: hsl(0, 0%, 8%);
  --border: hsl(0, 0%, 18%);
  --border-hover: hsl(0, 0%, 25%);
  --terminal-bg: hsl(0, 0%, 6%);
  --terminal-text: hsl(0, 0%, 70%);
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --max-w: 1200px;
  --radius: 0.5rem;
  --radius-sm: 0.375rem;
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: var(--fg);
  text-decoration: none;
  transition: opacity 0.2s;
}
a:hover { opacity: 0.8; }

/* ─── Container ─── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.25rem;
}
@media (min-width: 768px) { .container { padding: 0 2rem; } }
@media (min-width: 1024px) { .container { padding: 0 3rem; } }

/* ─── Nav ─── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  background: hsla(0, 0%, 4%, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}
@media (min-width: 768px) { nav { padding: 0 2rem; } }
@media (min-width: 1024px) { nav { padding: 0 3rem; } }

.nav-inner {
  max-width: var(--max-w);
  width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.138rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
}
.logo-9 {
  color: #8C8C8C;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}
@media (min-width: 640px) { .nav-links { gap: 2rem; } }
.nav-links a {
  font-size: 0.875rem;
  color: var(--muted);
  transition: color 0.2s;
}
.nav-links a:hover {
  color: var(--fg);
  opacity: 1;
}

/* ─── Hero ─── */
.hero {
  padding: 6rem 0 2rem;
  text-align: center;
}
@media (min-width: 768px) { .hero { padding: 8rem 0 3rem; } }

.hero h1 {
  font-size: clamp(2.25rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.hero p {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto 2.5rem;
  line-height: 1.5;
}

/* ─── Install Command ─── */
.install-cmd {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--terminal-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.625rem 0.875rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--terminal-text);
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
  max-width: 100%;
  overflow-x: auto;
  white-space: nowrap;
}
@media (min-width: 640px) {
  .install-cmd { font-size: 0.8125rem; padding: 0.75rem 1rem; gap: 0.75rem; }
}
.install-cmd:hover {
  border-color: var(--border-hover);
  box-shadow: 0 0 20px hsla(0, 0%, 100%, 0.04);
}
.install-cmd .prompt { color: var(--muted); user-select: none; }
.install-cmd .copy-btn {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.875rem;
  padding: 0.125rem;
  flex-shrink: 0;
  transition: color 0.2s;
}
.install-cmd .copy-btn:hover { color: var(--fg); }

/* ─── Logo Wall ─── */
.logos {
  padding: 3rem 0;
  text-align: center;
  border-top: 1px solid var(--border);
}
.logos-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 1.5rem;
}
.logos-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}
@media (min-width: 640px) { .logos-row { gap: 3rem; } }
.logos-row span {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: hsl(0, 0%, 35%);
  transition: color 0.3s;
  white-space: nowrap;
}
.logos-row span:hover { color: var(--fg); }

/* ─── Features ─── */
.features {
  padding: 4rem 0;
}
.features-heading {
  text-align: center;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 2.5rem;
}
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}
@media (min-width: 640px) { .features-grid { grid-template-columns: 1fr 1fr; } }

.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.feature-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 0 24px hsla(0, 0%, 100%, 0.03);
}
.feature-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}
.feature-card p {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.5;
}

/* ─── Get Started (Install Cards) ─── */
.get-started {
  padding: 4rem 0;
}
.get-started-heading {
  text-align: center;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 2.5rem;
}
.install-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}
@media (min-width: 768px) { .install-grid { grid-template-columns: 1fr 1fr; } }

.install-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.install-card-header {
  padding: 0.625rem 0.875rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.install-card-header .dot {
  width: 0.375rem;
  height: 0.375rem;
  border-radius: 50%;
  background: hsl(0, 0%, 30%);
}
.install-card-header span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
}
.install-card-body {
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--terminal-text);
}
.install-card-body .comment { color: #6A9955; }
.install-card-body .cmd { color: #DCDCAA; }
.install-card-body .fl  { color: #61A2D9; }
.install-card-body .str { color: #CE9178; }
.install-card-body .op  { color: #D4D4D4; }

/* ─── Footer ─── */
footer {
  padding: 3rem 0;
  text-align: center;
  border-top: 1px solid var(--border);
}
footer p {
  font-size: 0.75rem;
  color: var(--muted);
}

/* ─── Utilities ─── */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(1rem);
  background: var(--fg);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s, transform 0.3s;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}