/* ──────────────────────────────────────────────────────────────────────
   pgvis landing page styles
   ────────────────────────────────────────────────────────────────────── */

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

:root {
  --color-primary: #6366f1;
  --color-primary-dark: #4f46e5;
  --color-accent: #8b5cf6;
  --color-bg: #08081a;
  --color-bg-elev: #0f0f23;
  --color-bg-secondary: #14142b;
  --color-bg-tertiary: #1a1a36;
  --color-text: #e2e8f0;
  --color-text-strong: #f8fafc;
  --color-text-muted: #94a3b8;
  --color-text-dim: #64748b;
  --color-border: #1f1f3d;
  --color-border-strong: #2d2d5a;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", ui-monospace, SFMono-Regular, Menlo, monospace;
  --radius: 12px;
  --radius-lg: 18px;
  --shadow-card: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 12px 32px -16px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 0 1px rgba(99, 102, 241, 0.4), 0 0 32px -4px rgba(99, 102, 241, 0.3);
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  font-feature-settings: "cv02", "cv03", "cv04", "cv11";
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(99, 102, 241, 0.15), transparent),
    radial-gradient(ellipse 60% 40% at 100% 100%, rgba(139, 92, 246, 0.08), transparent);
  background-attachment: fixed;
}

a {
  color: inherit;
  text-decoration: none;
}

code,
pre {
  font-family: var(--font-mono);
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── Header ─────────────────────────────────────────────────────────── */

header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(8, 8, 26, 0.7);
  border-bottom: 1px solid var(--color-border);
}

header nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  max-width: 1180px;
  margin: 0 auto;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text-strong);
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-links a {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.15s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text-strong);
}

.nav-github {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

/* ── Hero ──────────────────────────────────────────────────────────── */

.hero {
  padding: 5rem 0 4rem;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: var(--color-text);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-bottom: 1.5rem;
  transition: border-color 0.15s, background 0.15s;
}

.hero-badge:hover {
  border-color: rgba(99, 102, 241, 0.6);
  background: rgba(99, 102, 241, 0.15);
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: #34d399;
  box-shadow: 0 0 8px #34d39955;
}

.hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--color-text-strong);
  margin: 0 auto 1.5rem;
  max-width: 880px;
}

.gradient-text {
  background: linear-gradient(135deg, #818cf8 0%, #a78bfa 50%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  color: var(--color-text-muted);
  max-width: 720px;
  margin: 0 auto 2.5rem;
  line-height: 1.65;
}

.cta-group {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.6rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.12s, background 0.15s, border-color 0.15s, box-shadow 0.15s;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: white;
  box-shadow: 0 4px 16px -4px rgba(99, 102, 241, 0.5);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px -4px rgba(99, 102, 241, 0.7);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-text-strong);
  border-color: var(--color-border-strong);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--color-text-muted);
  transform: translateY(-1px);
}

.hero-meta {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: rgba(20, 20, 43, 0.6);
  overflow: hidden;
}

.hero-meta-item {
  padding: 0.7rem 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  border-right: 1px solid var(--color-border);
  text-align: left;
}

.hero-meta-item:last-child {
  border-right: none;
}

.hero-meta-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-dim);
  font-weight: 600;
}

.hero-meta-value {
  font-size: 0.85rem;
  color: var(--color-text);
  font-weight: 600;
  font-family: var(--font-mono);
}

/* ── Diagram band ──────────────────────────────────────────────────── */

.diagram {
  padding: 1rem 0 3rem;
}

.diagram-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(20, 20, 43, 0.5), rgba(15, 15, 35, 0.5));
}

.diagram-node {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.8rem 1.15rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.9rem;
  border: 1px solid var(--color-border-strong);
  background: var(--color-bg-secondary);
  color: var(--color-text);
}

.diagram-node small {
  display: block;
  font-size: 0.7rem;
  color: var(--color-text-dim);
  font-weight: 500;
  margin-top: 0.1rem;
  font-family: var(--font-mono);
  letter-spacing: -0.01em;
}

.diagram-engine {
  flex-direction: column;
  align-items: center;
  text-align: center;
  border-color: rgba(99, 102, 241, 0.5);
  background: rgba(99, 102, 241, 0.08);
}

.diagram-engine svg {
  margin-bottom: 0.2rem;
}

.diagram-arrow {
  color: var(--color-text-dim);
  font-size: 1.2rem;
  font-weight: 600;
}

.diagram-surfaces {
  display: inline-flex;
  flex-direction: column;
  gap: 0.4rem;
}

.diagram-surface {
  padding: 0.4rem 1rem;
  border-radius: 8px;
  background: rgba(139, 92, 246, 0.1);
  color: #c4b5fd;
  font-weight: 600;
  font-size: 0.85rem;
  text-align: center;
  border: 1px solid rgba(139, 92, 246, 0.3);
  font-family: var(--font-mono);
}

/* ── Section header ─────────────────────────────────────────────────── */

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.6rem;
}

.section-header h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text-strong);
}

/* ── Features ──────────────────────────────────────────────────────── */

.features {
  padding: 4rem 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
}

.feature {
  position: relative;
  background: linear-gradient(180deg, var(--color-bg-secondary), var(--color-bg-elev));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  box-shadow: var(--shadow-card);
}

.feature:hover {
  border-color: rgba(99, 102, 241, 0.4);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px -16px rgba(99, 102, 241, 0.3);
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.25);
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.feature-icon svg {
  width: 22px;
  height: 22px;
}

.icon-mcp {
  background: rgba(99, 102, 241, 0.12);
  color: #a5b4fc;
}

.icon-rest {
  background: rgba(139, 92, 246, 0.12);
  border-color: rgba(139, 92, 246, 0.25);
  color: #c4b5fd;
}

.icon-openapi {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.25);
  color: #6ee7b7;
}

.icon-rust {
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.25);
  color: #fcd34d;
}

.icon-shield {
  background: rgba(236, 72, 153, 0.1);
  border-color: rgba(236, 72, 153, 0.25);
  color: #f9a8d4;
}

.icon-backend {
  background: rgba(56, 189, 248, 0.1);
  border-color: rgba(56, 189, 248, 0.25);
  color: #7dd3fc;
}

.feature h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text-strong);
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.feature p {
  color: var(--color-text-muted);
  line-height: 1.65;
  font-size: 0.95rem;
}

.feature code,
.why code {
  background: rgba(99, 102, 241, 0.12);
  color: #c7d2fe;
  padding: 0.1rem 0.4rem;
  border-radius: 5px;
  font-size: 0.85em;
  font-family: var(--font-mono);
}

/* ── Code example ──────────────────────────────────────────────────── */

.code-example {
  padding: 4rem 0;
}

.code-tabs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.25rem;
}

.code-block {
  background: var(--color-bg-elev);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.code-block-head {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.78rem;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.02);
}

.code-block-head svg {
  color: var(--color-primary);
}

.code-block pre {
  padding: 1.25rem;
  overflow-x: auto;
  font-size: 0.84rem;
  line-height: 1.65;
}

.code-block code {
  color: var(--color-text);
  white-space: pre;
}

/* ── Why ────────────────────────────────────────────────────────────── */

.why {
  padding: 4rem 0;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.why-card {
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: rgba(20, 20, 43, 0.5);
  transition: border-color 0.2s;
}

.why-card:hover {
  border-color: var(--color-border-strong);
}

.why-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text-strong);
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.why-card p {
  font-size: 0.93rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ── Bottom CTA ─────────────────────────────────────────────────────── */

.cta-bottom {
  padding: 5rem 0 6rem;
  text-align: center;
}

.cta-bottom h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text-strong);
  margin-bottom: 0.75rem;
}

.cta-bottom p {
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  font-size: 1.05rem;
}

.cta-bottom .cta-group {
  margin-bottom: 0;
}

/* ── Footer ─────────────────────────────────────────────────────────── */

footer {
  border-top: 1px solid var(--color-border);
  padding: 3rem 0 2rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  background: rgba(8, 8, 26, 0.6);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-built-by {
  margin-top: 0.6rem;
  font-size: 0.85rem;
  color: var(--color-text-dim);
}

.footer-built-by a {
  color: var(--color-text);
  font-weight: 600;
  border-bottom: 1px dashed var(--color-border-strong);
  transition: color 0.15s, border-color 0.15s;
}

.footer-built-by a:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.footer-col h4 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-strong);
  font-weight: 700;
  margin-bottom: 0.85rem;
}

.footer-col a {
  display: block;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  padding: 0.2rem 0;
  transition: color 0.15s;
}

.footer-col a:hover {
  color: var(--color-text-strong);
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 700;
  color: var(--color-text-strong);
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.footer-col p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  max-width: 260px;
  line-height: 1.55;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-dim);
}

.footer-github {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  transition: color 0.15s;
}

.footer-github:hover {
  color: var(--color-text-strong);
}

.inline-link {
  color: #a5b4fc;
  border-bottom: 1px dashed rgba(165, 180, 252, 0.5);
  transition: color 0.15s, border-color 0.15s;
}

.inline-link:hover {
  color: var(--color-text-strong);
  border-bottom-color: currentColor;
}

/* ── /vision page ───────────────────────────────────────────────────── */

.section-sub {
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0.75rem auto 0;
  font-size: 1rem;
  line-height: 1.65;
}

.vision-roadmap-section {
  padding: 3rem 0 4rem;
}

.vision-roadmap {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.1rem;
  padding: 0;
  margin: 0;
}

.vision-milestone {
  position: relative;
  background: linear-gradient(180deg, var(--color-bg-secondary), var(--color-bg-elev));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: border-color 0.2s, transform 0.2s;
}

.vision-milestone:hover {
  transform: translateY(-2px);
  border-color: var(--color-border-strong);
}

.vision-milestone.status-shipped {
  border-color: rgba(16, 185, 129, 0.35);
}

.vision-milestone.status-in-progress {
  border-color: rgba(99, 102, 241, 0.45);
}

.vision-milestone-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.vision-milestone-version {
  font-weight: 700;
  font-size: 0.78rem;
  color: var(--color-text-strong);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.3rem 0.7rem;
  border-radius: 6px;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.25);
}

.vision-milestone-status {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-family: var(--font-mono);
}

.vision-milestone-status.status-shipped {
  background: rgba(16, 185, 129, 0.12);
  color: #6ee7b7;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.vision-milestone-status.status-in-progress {
  background: rgba(99, 102, 241, 0.12);
  color: #a5b4fc;
  border: 1px solid rgba(99, 102, 241, 0.35);
}

.vision-milestone-status.status-planned {
  background: rgba(148, 163, 184, 0.08);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.vision-milestone h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text-strong);
  letter-spacing: -0.01em;
  margin-bottom: 0.4rem;
}

.vision-milestone p {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.vision-source {
  margin-top: 2rem;
  text-align: center;
  font-size: 0.88rem;
  color: var(--color-text-dim);
}

.vision-source a {
  color: var(--color-text-muted);
  border-bottom: 1px dashed var(--color-border-strong);
}

.vision-source a:hover {
  color: var(--color-text-strong);
}

.vision-horizon {
  padding: 4rem 0;
}

.horizon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.horizon-card {
  position: relative;
  background: linear-gradient(180deg, var(--color-bg-secondary), var(--color-bg-elev));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.85rem;
  box-shadow: var(--shadow-card);
  transition: border-color 0.2s, transform 0.2s;
}

.horizon-card:hover {
  transform: translateY(-2px);
  border-color: rgba(139, 92, 246, 0.45);
}

.horizon-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.3);
  color: #c4b5fd;
  margin-bottom: 1rem;
}

.horizon-pill {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background: rgba(245, 158, 11, 0.12);
  color: #fcd34d;
  border: 1px solid rgba(245, 158, 11, 0.3);
  font-family: var(--font-mono);
  margin-bottom: 0.75rem;
}

.horizon-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text-strong);
  letter-spacing: -0.01em;
  margin-bottom: 0.55rem;
}

.horizon-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 0.85rem;
}

.horizon-card code {
  background: rgba(99, 102, 241, 0.12);
  color: #c7d2fe;
  padding: 0.08rem 0.35rem;
  border-radius: 5px;
  font-size: 0.85em;
}

.horizon-note {
  display: block;
  font-size: 0.78rem;
  color: var(--color-text-dim);
  font-style: italic;
  border-top: 1px dashed var(--color-border);
  padding-top: 0.7rem;
  margin-top: 0.4rem;
}

.horizon-cta {
  text-align: center;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.horizon-cta p {
  color: var(--color-text-muted);
  max-width: 580px;
  margin: 0 auto 1.5rem;
  font-size: 1rem;
  line-height: 1.65;
}

/* ── Responsive ────────────────────────────────────────────────────── */

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 720px) {
  .hero {
    padding: 3rem 0 2rem;
  }

  header nav {
    padding: 0.85rem 1.25rem;
  }

  .nav-links {
    gap: 1.1rem;
  }

  .nav-links a:not(.nav-github) {
    display: none;
  }

  .feature-grid,
  .code-tabs,
  .why-grid {
    grid-template-columns: 1fr;
  }

  .hero-meta {
    display: flex;
    flex-direction: column;
  }

  .hero-meta-item {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    text-align: center;
    align-items: center;
  }

  .hero-meta-item:last-child {
    border-bottom: none;
  }

  .diagram-grid {
    flex-direction: column;
  }

  .diagram-arrow {
    transform: rotate(90deg);
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}