/*
 * Crixin marketing site — dark Tokyo-Night-adjacent theme.
 * Matches docs/design/theme.md so the in-product dashboard and the marketing
 * site share one visual language. The amber accent (`--brand`) carries the
 * "marker / receipt / annotation" metaphor across both surfaces.
 *
 * Variable names are deliberately stable — earlier (warm) iterations used the
 * same names with different values so HTML files transition without changes.
 */

:root {
  /* Surfaces — Tokyo-Night-adjacent slate */
  --bg-base:      #0b0d12;   /* near-black, slight blue cast */
  --bg-surface:   #161922;   /* cards, sidebars */
  --bg-elevated:  #1f2330;   /* card hover, popovers, pricing tier */
  --border-subtle: #272a35;
  --border-strong: #3a3f4d;

  /* Text */
  --text-primary:   #e6e8ef;
  --text-secondary: #9097a8;
  --text-muted:     #5b6075;

  /* Brand — amber accent (marker, highlight) */
  --brand:      #f5b452;
  --brand-deep: #d68f2c;
  --brand-soft: #fad08e;

  /* Cool accent — used sparingly for "info"/links/secondary CTAs */
  --accent:        #7aa2f7;   /* azure */
  --accent-deep:   #5b87dc;

  /* Status */
  --success: #7bd88f;
  --warning: #e0af68;
  --danger:  #f7768e;

  /* Type */
  --font-sans: "Inter", -apple-system, "SF Pro Display", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "IBM Plex Mono", ui-monospace, monospace;

  /* Shape */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   14px;
  --radius-pill: 9999px;

  /* Motion */
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; padding: 0; }

body {
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(245, 180, 82, 0.06), transparent 60%),
    radial-gradient(900px 500px at -10% 110%, rgba(122, 162, 247, 0.06), transparent 60%),
    var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--accent); text-decoration: none; transition: color 120ms var(--ease); }
a:hover { color: var(--brand); text-decoration: underline; text-underline-offset: 3px; }

code, pre, .mono { font-family: var(--font-mono); font-size: 0.92em; }

img, svg { max-width: 100%; display: block; }

::selection { background: rgba(245, 180, 82, 0.28); color: var(--text-primary); }

/* ---- Layout primitives ---- */

.wrap        { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.wrap-narrow { max-width: 760px;  margin: 0 auto; padding: 0 24px; }

section { padding: 80px 0; }
section.sm { padding: 48px 0; }

/* ---- Header ---- */

header.site {
  position: sticky; top: 0; z-index: 20;
  background: rgba(11, 13, 18, 0.78);
  backdrop-filter: saturate(150%) blur(10px);
  -webkit-backdrop-filter: saturate(150%) blur(10px);
  border-bottom: 1px solid var(--border-subtle);
}
header.site .row {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.brand-mark {
  font-weight: 700; font-size: 19px; color: var(--brand);
  letter-spacing: -0.01em;
}
.brand-mark .tag {
  font-weight: 500; font-size: 11px; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.08em; margin-left: 8px;
}
nav.primary { display: flex; gap: 22px; }
nav.primary a { color: var(--text-secondary); font-weight: 500; font-size: 14px; }
nav.primary a:hover { color: var(--brand); text-decoration: none; }

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

.hero { padding: 96px 0 56px; }
.hero h1 {
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--text-primary);
}
.hero .lede {
  font-size: clamp(17px, 1.6vw, 21px);
  color: var(--text-secondary);
  margin: 0 0 24px;
  max-width: 640px;
}
.hero .ctas { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }

/* ---- Buttons ---- */

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px;
  border-radius: var(--radius-md);
  font-weight: 600; font-size: 14px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 120ms var(--ease), box-shadow 160ms var(--ease),
              background 120ms var(--ease), border-color 120ms var(--ease),
              color 120ms var(--ease);
  text-decoration: none;
  letter-spacing: -0.005em;
}
.btn-primary {
  background: var(--brand);
  color: #0b0d12;
}
.btn-primary:hover {
  background: var(--brand-soft);
  color: #0b0d12;
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(245, 180, 82, 0.22);
}
.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-strong);
}
.btn-ghost:hover {
  background: var(--bg-surface);
  color: var(--brand);
  border-color: var(--brand);
  text-decoration: none;
}

/* The copy-cmd block doubles as the v0.1 install snippet. */
.copy-cmd {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 14px;
  background: #0a0c11;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  color: var(--text-primary);
  cursor: pointer;
  transition: border-color 120ms var(--ease);
}
.copy-cmd::before { content: "$"; color: var(--brand); margin-right: 4px; }
.copy-cmd:hover { border-color: var(--brand); }

/* ---- Generic section heads ---- */

h2.section-title {
  font-size: clamp(24px, 3vw, 34px);
  letter-spacing: -0.02em;
  margin: 0 0 12px;
  font-weight: 700;
  color: var(--text-primary);
}
p.section-lede { color: var(--text-secondary); max-width: 720px; margin: 0 0 32px; }

/* ---- Grids ---- */

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 720px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

/* ---- Cards ---- */

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 22px;
  transition: border-color 160ms var(--ease), transform 160ms var(--ease),
              background 160ms var(--ease);
}
.card:hover {
  border-color: var(--border-strong);
  background: var(--bg-elevated);
}
.card h3 { margin: 0 0 8px; font-size: 16px; font-weight: 600; color: var(--text-primary); }
.card p  { margin: 0; color: var(--text-secondary); font-size: 14.5px; }

/* ---- Pricing ---- */

.pricing { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 720px) { .pricing { grid-template-columns: 1fr; } }

.tier {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 26px;
  transition: border-color 160ms var(--ease);
}
.tier:hover { border-color: var(--border-strong); }
.tier.featured {
  border-color: var(--brand);
  background: linear-gradient(180deg, rgba(245, 180, 82, 0.06), transparent 50%) , var(--bg-elevated);
  box-shadow: 0 12px 36px rgba(245, 180, 82, 0.10);
}
.tier .name {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.10em;
  color: var(--text-muted); font-weight: 600;
}
.tier .price {
  font-size: 38px; font-weight: 700; margin: 8px 0 16px; letter-spacing: -0.02em;
  color: var(--text-primary);
}
.tier .price .per { font-size: 13px; font-weight: 500; color: var(--text-secondary); margin-left: 4px; }
.tier ul { list-style: none; margin: 0 0 20px; padding: 0; color: var(--text-secondary); }
.tier ul li {
  padding: 7px 0;
  border-bottom: 1px dashed var(--border-subtle);
  font-size: 13.5px;
}
.tier ul li:last-child { border-bottom: none; }

/* ---- Hook block (Wrapped-style accent) ---- */

.hook {
  position: relative;
  background:
    radial-gradient(600px 240px at 0% 0%, rgba(245, 180, 82, 0.10), transparent 60%),
    var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-left: 2px solid var(--brand);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
}
.hook .lead {
  font-size: clamp(20px, 2vw, 26px);
  font-weight: 600;
  line-height: 1.3;
  margin: 0 0 12px;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}
.hook .body {
  color: var(--text-secondary);
  margin: 0;
  font-size: 16px;
}

/* ---- Tool badge ---- */

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11px; font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: rgba(245, 180, 82, 0.10);
  border: 1px solid var(--brand);
  color: var(--brand);
  text-transform: uppercase; letter-spacing: 0.08em;
}

/* ---- Code block — terminal-style on dark ---- */

.codeblock {
  background: #0a0c11;
  color: var(--text-primary);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.65;
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
  position: relative;
}
.codeblock .comment { color: var(--text-muted); font-style: italic; }
.codeblock .prompt  { color: var(--brand); user-select: none; margin-right: 6px; }

/* tiny terminal "traffic lights" for visual texture */
.codeblock::before {
  content: "";
  position: absolute; top: 12px; left: 14px;
  width: 8px; height: 8px; border-radius: 9999px;
  background: var(--danger);
  box-shadow:
    14px 0 0 0 var(--warning),
    28px 0 0 0 var(--success);
}
.codeblock {
  padding-top: 36px; /* leave room for the lights */
}

/* ---- Form field (waitlist) ---- */

input[type="email"], input[type="text"] {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  font: inherit;
  transition: border-color 120ms var(--ease), box-shadow 160ms var(--ease);
}
input[type="email"]:focus, input[type="text"]:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(245, 180, 82, 0.18);
}
input::placeholder { color: var(--text-muted); }

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

footer.site {
  margin-top: 80px;
  padding: 32px 0;
  border-top: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 13px;
}
footer.site .row {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px;
}
footer.site a { color: var(--text-secondary); }
footer.site a:hover { color: var(--brand); }

/* ---- A11y ---- */

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}