/* ============================================================
   Iris Code — Marketing Site
   site.css — design tokens, base, and shared components
   ============================================================ */

:root {
  /* Surfaces */
  --bg: #0c0c10;
  --bg-elev-1: #131319;
  --bg-elev-2: #1a1a22;
  --bg-elev-3: #20202a;

  /* Text */
  --text: #f4f4f5;
  --text-secondary: #c4c4cc;
  --text-muted: #8b8b96;

  /* Accents */
  --gold: #c89b3c;
  --gold-bright: #e6b85c;
  --gold-deep: #9e7626;
  --gold-glow: rgba(230, 184, 92, 0.35);

  /* Borders */
  --border-faint: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.10);
  --border-strong: rgba(255, 255, 255, 0.16);

  /* Status colors */
  --green: #6dd58c;
  --red: #ef6f6c;
  --blue: #6fb0ef;
  --purple: #b687f0;

  /* Radii */
  --r-1: 6px;
  --r-2: 8px;
  --r-3: 14px;
  --r-4: 20px;
  --r-pill: 999px;

  /* Spacing scale */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 24px;
  --s-6: 32px;
  --s-7: 48px;
  --s-8: 64px;
  --s-9: 96px;
  --s-10: 128px;

  /* Type */
  --font-sans: -apple-system, "Inter", "Segoe UI Variable", "Segoe UI", system-ui, sans-serif;
  --font-serif: "Iowan Old Style", "Charter", "Palatino Linotype", Georgia, serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", "JetBrains Mono", Consolas, monospace;

  /* Motion */
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --t-fast: 120ms;
  --t-med: 180ms;
  --t-slow: 320ms;

  /* Container */
  --container: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  font-feature-settings: "cv11", "ss01", "ss03";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Subtle starfield-like background — pure CSS */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(1px 1px at 20% 30%, rgba(255, 255, 255, 0.12) 50%, transparent 51%),
    radial-gradient(1px 1px at 70% 80%, rgba(255, 255, 255, 0.10) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 40% 60%, rgba(230, 184, 92, 0.18) 50%, transparent 51%),
    radial-gradient(1px 1px at 85% 25%, rgba(255, 255, 255, 0.08) 50%, transparent 51%),
    radial-gradient(1px 1px at 12% 80%, rgba(255, 255, 255, 0.10) 50%, transparent 51%),
    radial-gradient(2px 2px at 55% 12%, rgba(230, 184, 92, 0.12) 50%, transparent 51%),
    radial-gradient(circle at 50% 0%, rgba(200, 155, 60, 0.06), transparent 60%);
  background-size: 1200px 1200px, 900px 900px, 800px 800px, 1100px 1100px, 700px 700px, 1000px 1000px, 100% 100%;
  opacity: 0.7;
}

main, header, footer {
  position: relative;
  z-index: 1;
}

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

a {
  color: var(--gold-bright);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}

a:hover {
  color: var(--gold);
}

p {
  color: var(--text-secondary);
}

/* Headings */
h1, h2, h3, h4, h5 {
  margin: 0 0 var(--s-4) 0;
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--text);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2.4rem, 5vw, 4.4rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
}

h4 {
  font-size: 1.05rem;
  font-family: var(--font-sans);
  font-weight: 600;
  letter-spacing: 0.01em;
}

/* Wordmark gradient */
.wordmark {
  background: linear-gradient(135deg, #c89b3c, #e6b85c, #c89b3c);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  animation: wordmark-pan 6s linear infinite;
}

@keyframes wordmark-pan {
  to { background-position: 200% 0; }
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--s-5);
  padding-right: var(--s-5);
}

/* Section */
.section {
  padding: var(--s-9) 0;
}

.section--tight {
  padding: var(--s-7) 0;
}

.section-eyebrow {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold-bright);
  margin-bottom: var(--s-3);
}

.section-title {
  margin-bottom: var(--s-3);
}

.section-lead {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 0 var(--s-7) 0;
}

/* ============================================================
   Navigation / Header
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px) saturate(120%);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  background: rgba(12, 12, 16, 0.72);
  border-bottom: 1px solid var(--border-faint);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  color: var(--text);
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.brand:hover {
  color: var(--text);
}

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: var(--r-1);
  filter: drop-shadow(0 0 12px var(--gold-glow));
  transition: filter var(--t-med) var(--ease), transform var(--t-med) var(--ease);
}

.brand:hover .brand-mark {
  transform: rotate(-6deg) scale(1.06);
  filter: drop-shadow(0 0 18px var(--gold-glow));
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  display: inline-block;
  padding: var(--s-2) var(--s-3);
  color: var(--text-secondary);
  font-size: 0.93rem;
  border-radius: var(--r-1);
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.nav-links a:hover,
.nav-links a.active {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--r-1);
  color: var(--text);
  cursor: pointer;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text);
  border-radius: 2px;
  position: relative;
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after  { top:  6px; }

@media (max-width: 760px) {
  .nav-toggle { display: inline-flex; }
  .nav-links {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--s-3);
    background: rgba(12, 12, 16, 0.96);
    border-bottom: 1px solid var(--border);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--t-med) var(--ease), transform var(--t-med) var(--ease);
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-links a {
    padding: var(--s-3);
    border-bottom: 1px solid var(--border-faint);
  }
}

/* ============================================================
   Buttons
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  padding: 12px 22px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: var(--r-2);
  cursor: pointer;
  border: 1px solid transparent;
  transition:
    transform var(--t-med) var(--ease),
    box-shadow var(--t-med) var(--ease),
    background var(--t-med) var(--ease),
    color var(--t-med) var(--ease),
    border-color var(--t-med) var(--ease);
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn--primary {
  background: linear-gradient(135deg, var(--gold), var(--gold-bright));
  color: #1a1208;
  box-shadow: 0 6px 24px -8px var(--gold-glow), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn--primary:hover {
  color: #1a1208;
  box-shadow: 0 10px 30px -6px var(--gold-glow), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.btn--ghost {
  background: transparent;
  color: var(--gold-bright);
  border: 1px solid rgba(200, 155, 60, 0.4);
}

.btn--ghost:hover {
  color: var(--gold-bright);
  border-color: var(--gold-bright);
  background: rgba(200, 155, 60, 0.06);
}

.btn--lg {
  padding: 16px 28px;
  font-size: 1.02rem;
}

.btn--disabled,
.btn[disabled] {
  pointer-events: none;
  opacity: 0.45;
  filter: grayscale(0.6);
}

/* ============================================================
   Cards
   ============================================================ */

.card {
  background: linear-gradient(180deg, var(--bg-elev-1), var(--bg-elev-2));
  border: 1px solid var(--border-faint);
  border-radius: var(--r-3);
  padding: var(--s-5);
  transition: border-color var(--t-med) var(--ease), transform var(--t-med) var(--ease), box-shadow var(--t-med) var(--ease);
}

.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: 0 22px 50px -30px rgba(0, 0, 0, 0.8);
}

.card h3 {
  margin-bottom: var(--s-2);
}

.card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.96rem;
}

/* Badges / chips */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--r-pill);
  background: rgba(200, 155, 60, 0.10);
  color: var(--gold-bright);
  border: 1px solid rgba(200, 155, 60, 0.25);
  font-family: var(--font-sans);
  font-weight: 600;
}

.chip--new {
  background: rgba(109, 213, 140, 0.10);
  color: var(--green);
  border-color: rgba(109, 213, 140, 0.30);
}

.chip--muted {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  border-color: var(--border);
}

/* ============================================================
   Footer
   ============================================================ */

.site-footer {
  border-top: 1px solid var(--border-faint);
  padding: var(--s-7) 0 var(--s-6);
  margin-top: var(--s-9);
  background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.3));
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--s-6);
  margin-bottom: var(--s-6);
}

.footer-grid h5 {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--s-3);
}

.footer-grid ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-grid li {
  margin-bottom: 8px;
}

.footer-grid a {
  color: var(--text-secondary);
  font-size: 0.93rem;
}

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

.footer-blurb {
  color: var(--text-muted);
  font-size: 0.93rem;
  margin-top: var(--s-3);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--s-4);
  padding-top: var(--s-5);
  border-top: 1px solid var(--border-faint);
  color: var(--text-muted);
  font-size: 0.85rem;
  flex-wrap: wrap;
}

.share-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  padding: var(--s-4) var(--s-5);
  margin-bottom: var(--s-5);
  background: linear-gradient(135deg, rgba(200, 155, 60, 0.08), rgba(200, 155, 60, 0));
  border: 1px solid rgba(200, 155, 60, 0.25);
  border-radius: var(--r-3);
  flex-wrap: wrap;
}

.share-bar__copy {
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.98rem;
}

@media (max-width: 760px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .share-bar {
    flex-direction: column;
    text-align: center;
  }
}

/* ============================================================
   Reveal animation (intersection observer)
   ============================================================ */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms var(--ease), transform 600ms var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   Utility
   ============================================================ */

.t-center { text-align: center; }
.t-muted  { color: var(--text-muted); }
.t-mono   { font-family: var(--font-mono); }
.t-gold   { color: var(--gold-bright); }
.flex     { display: flex; }
.flex-gap { gap: var(--s-3); }
.flex-wrap { flex-wrap: wrap; }
.flex-center { justify-content: center; align-items: center; }
.mt-0 { margin-top: 0; }
.mt-3 { margin-top: var(--s-3); }
.mt-5 { margin-top: var(--s-5); }
.mt-6 { margin-top: var(--s-6); }
.mb-0 { margin-bottom: 0; }

kbd {
  font-family: var(--font-mono);
  font-size: 0.82em;
  padding: 2px 8px;
  background: var(--bg-elev-3);
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: var(--r-1);
  color: var(--text);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.4);
  white-space: nowrap;
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 2px 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--r-1);
  color: var(--gold-bright);
}

pre {
  background: var(--bg-elev-1);
  border: 1px solid var(--border-faint);
  border-radius: var(--r-2);
  padding: var(--s-4);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--text-secondary);
}

pre code {
  background: transparent;
  padding: 0;
  color: inherit;
}

hr {
  border: 0;
  height: 1px;
  background: var(--border-faint);
  margin: var(--s-6) 0;
}