/* ============================================================================
   mcp-kraken landing page — Kraken-inspired dark theme

   Palette
     primary purple    #7132F5   accent / CTA / links
     primary-soft      #A78BFA   highlights, gradients
     bg                #0B0D14   page background (very dark navy)
     surface           #11141F   cards, code blocks
     surface-2         #181C2A   raised surfaces
     border            #232839   subtle borders
     text              #E8EAF1   primary text
     text-muted        #8E94A8   secondary text
     buy               #22C55E   exchange green (unused but kept for future)
     sell              #EF4444   exchange red

   Light theme variant kicks in via prefers-color-scheme.
   ========================================================================= */

:root {
  --primary: #7132f5;
  --primary-soft: #a78bfa;
  --primary-hover: #5e1de0;
  --bg: #0b0d14;
  --surface: #11141f;
  --surface-2: #181c2a;
  --border: #232839;
  --text: #e8eaf1;
  --text-muted: #8e94a8;
  --buy: #22c55e;
  --sell: #ef4444;
  --radius: 12px;
  --radius-lg: 16px;
  --maxw: 1100px;
  --font-sans:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui,
    sans-serif;
  --font-mono:
    "JetBrains Mono", "SF Mono", Menlo, Consolas, ui-monospace, monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #fafaff;
    --surface: #ffffff;
    --surface-2: #f4f4fb;
    --border: #e4e6f0;
    --text: #1a1d2e;
    --text-muted: #5b6076;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background:
    radial-gradient(
      ellipse 1200px 600px at 50% -100px,
      rgba(113, 50, 245, 0.18),
      transparent 60%
    ),
    var(--bg);
  background-attachment: fixed;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--primary-soft);
  text-decoration: none;
  transition: color 120ms ease;
}
a:hover {
  color: var(--primary);
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.1em 0.4em;
  color: var(--primary-soft);
}

/* ============================================================ Alpha banner */
.alpha-banner {
  background: linear-gradient(
    90deg,
    rgba(239, 68, 68, 0.18),
    rgba(239, 68, 68, 0.08)
  );
  border-bottom: 1px solid rgba(239, 68, 68, 0.35);
  color: var(--text);
  font-size: 0.88rem;
  line-height: 1.5;
  padding: 0.75rem 1.5rem;
  text-align: center;
}
.alpha-banner strong {
  color: #ff9b9b;
}

/* ============================================================ Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.5rem;
  max-width: var(--maxw);
  margin: 0 auto;
  backdrop-filter: blur(12px);
  background: rgba(11, 13, 20, 0.6);
  border-bottom: 1px solid transparent;
}
@media (prefers-color-scheme: light) {
  .site-header {
    background: rgba(250, 250, 255, 0.7);
  }
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
}
.brand:hover {
  color: var(--text);
}
.brand-mark {
  width: 28px;
  height: 28px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.site-nav a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
}
.site-nav a:hover {
  color: var(--text);
}
@media (max-width: 720px) {
  .site-nav a:not(.cta) {
    display: none;
  }
}

/* ============================================================ Main shell */
main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.5rem;
}

section {
  padding: 4rem 0;
  border-top: 1px solid var(--border);
}
section:first-of-type {
  border-top: 0;
}

h1,
h2,
h3,
h4 {
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0 0 1rem;
}
h2 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  margin-bottom: 2rem;
}
h3 {
  font-size: 1.1rem;
}
h4 {
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

p {
  color: var(--text-muted);
  margin: 0 0 1rem;
}

/* ============================================================ Hero */
.hero {
  padding: 5rem 0 4rem;
  border-top: 0;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.8rem;
  background: rgba(113, 50, 245, 0.12);
  border: 1px solid rgba(113, 50, 245, 0.3);
  border-radius: 999px;
  color: var(--primary-soft);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
}
.hero-eyebrow .dot {
  width: 6px;
  height: 6px;
  background: var(--primary-soft);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--primary);
}
.hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 800;
  margin-bottom: 1.5rem;
}
.hero-accent {
  background: linear-gradient(135deg, var(--primary-soft), var(--primary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lede {
  font-size: 1.2rem;
  max-width: 640px;
  color: var(--text-muted);
  margin-bottom: 2rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}
.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}
.hero-badges img {
  height: 20px;
}

/* ============================================================ CTAs */
.cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 1.3rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition:
    background 120ms ease,
    transform 80ms ease,
    border-color 120ms ease;
  white-space: nowrap;
}
.cta-primary {
  background: var(--primary);
  color: #ffffff;
}
.cta-primary:hover {
  background: var(--primary-hover);
  color: #ffffff;
  transform: translateY(-1px);
}
.cta-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.6rem 1.1rem;
}
.cta-ghost:hover {
  border-color: var(--primary);
  color: var(--primary-soft);
}

/* ============================================================ Features grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: border-color 150ms ease;
}
.card:hover {
  border-color: rgba(113, 50, 245, 0.4);
}
.card-icon {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}
.card h3 {
  color: var(--text);
}
.card p {
  margin: 0;
  font-size: 0.95rem;
}

/* ============================================================ Quickstart */
.quickstart pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin: 0;
}
.quickstart code {
  background: none;
  border: 0;
  padding: 0;
  color: var(--text);
  font-size: 0.9rem;
  line-height: 1.7;
}
.quickstart .comment {
  color: var(--text-muted);
  font-style: italic;
}
.quickstart .prompt {
  color: var(--primary-soft);
  user-select: none;
}

/* ============================================================ Tools */
.tool-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1rem;
}
.tool-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
}
.tool-group p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
}
.tool-group code {
  font-size: 0.82rem;
  padding: 0.05em 0.35em;
  margin: 0.05rem 0.05rem;
  display: inline-block;
}
.tag {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  border: 1px solid transparent;
}
.tag-public {
  color: var(--buy);
  background: rgba(34, 197, 94, 0.1);
  border-color: rgba(34, 197, 94, 0.3);
}
.tag-private {
  color: var(--primary-soft);
  background: rgba(113, 50, 245, 0.1);
  border-color: rgba(113, 50, 245, 0.3);
}

/* ============================================================ Disclaimer */
.disclaimer-box {
  background:
    linear-gradient(
      135deg,
      rgba(239, 68, 68, 0.06),
      rgba(239, 68, 68, 0.02)
    ),
    var(--surface);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-left-width: 4px;
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
}
.disclaimer-box p {
  color: var(--text);
  font-size: 0.95rem;
  margin: 0 0 0.9rem;
}
.disclaimer-box p:last-child {
  margin-bottom: 0;
}
.disclaimer-box strong {
  color: #ffb4b4;
}

/* ============================================================ Roadmap */
.roadmap ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 0.5rem;
}
.roadmap li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1.1rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  position: relative;
  padding-left: 2.5rem;
}
.roadmap li::before {
  content: "→";
  position: absolute;
  left: 1rem;
  color: var(--primary-soft);
  font-weight: 700;
}

/* ============================================================ Footer */
.site-footer {
  max-width: var(--maxw);
  margin: 2rem auto 0;
  padding: 2.5rem 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
}
.footer-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}
.footer-fineprint {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}