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

:root {
  --iris-purple: #6C3FA0;
  --iris-light: #9B6DD7;
  --iris-bg: #FAFAFA;
  --iris-surface: #FFFFFF;
  --iris-text: #1A1A2E;
  --iris-muted: #555;
  --iris-border: #E0E0E0;
  --iris-code-bg: #1E1E2E;
  --iris-code-text: #CDD6F4;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;
  --container: 1120px;
}

html { font-size: 16px; scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: var(--font-sans);
  color: var(--iris-text);
  background: var(--iris-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--iris-purple); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; }

code, pre, .code-block code, .highlight code {
  font-variant-ligatures: none;
  -webkit-font-feature-settings: "liga" 0, "calt" 0;
  font-feature-settings: "liga" 0, "calt" 0;
}
h1 { font-size: 2.25rem; margin-bottom: 1rem; }
h2 { font-size: 1.75rem; margin-bottom: 0.75rem; }
h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }

p { margin-bottom: 1rem; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== Header ===== */
.site-header {
  background: var(--iris-surface);
  border-bottom: 1px solid var(--iris-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--iris-text);
  text-decoration: none;
}

.logo img { width: 32px; height: 32px; }

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

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

.nav-links a:hover,
.nav-links a.active {
  color: var(--iris-purple);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--iris-text);
  border-radius: 1px;
}

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, #F5F0FF 0%, #EDE4FF 50%, #F0E8FF 100%);
  padding: 6rem 0 5rem;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  max-width: 700px;
  margin: 0 auto 1.25rem;
  color: var(--iris-text);
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--iris-muted);
  max-width: 640px;
  margin: 0 auto 2rem;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
}

.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.15s;
}

.btn-primary {
  background: var(--iris-purple);
  color: #fff;
}

.btn-primary:hover {
  background: #5A2E8C;
  text-decoration: none;
}

.version-badge {
  font-size: 0.9rem;
  color: var(--iris-muted);
  background: rgba(108, 63, 160, 0.08);
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-weight: 500;
}

/* ===== Sections ===== */
.section-heading {
  text-align: center;
  margin-bottom: 2.5rem;
  font-size: 1.75rem;
}

.features, .domains, .get-involved {
  padding: 5rem 0;
}

.features { background: var(--iris-surface); }
.domains { background: var(--iris-bg); }
.get-involved { background: var(--iris-surface); }

/* ===== Grid ===== */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

/* ===== Cards ===== */
.card {
  background: var(--iris-bg);
  border: 1px solid var(--iris-border);
  border-radius: 8px;
  padding: 2rem;
}

.features .card { background: var(--iris-bg); }
.get-involved .card { background: var(--iris-bg); }
.domains .card { background: var(--iris-surface); }

.card h3 { color: var(--iris-purple); }

.card-icon .icon {
  color: var(--iris-purple);
  margin-bottom: 1rem;
}

.card-icon .icon svg { width: 40px; height: 40px; }

/* ===== Code Showcase ===== */
.code-showcase {
  padding: 5rem 0;
  background: var(--iris-code-bg);
  color: var(--iris-code-text);
}

.code-showcase .section-heading { color: #fff; }

.code-block {
  background: #181825;
  border-radius: 8px;
  overflow: hidden;
}

.code-label {
  background: rgba(108, 63, 160, 0.3);
  color: #CBA6F7;
  padding: 0.5rem 1.25rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.code-block pre {
  padding: 1.25rem;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.7;
}

.code-block code {
  font-family: var(--font-mono);
  color: var(--iris-code-text);
}

/* ===== Docs Layout ===== */
.docs-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  max-width: var(--container);
  margin: 0 auto;
  min-height: calc(100vh - 64px - 200px);
}

.docs-sidebar {
  border-right: 1px solid var(--iris-border);
  padding: 2rem 1.5rem;
  position: sticky;
  top: 64px;
  height: fit-content;
  max-height: calc(100vh - 64px);
  overflow-y: auto;
}

.docs-sidebar h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--iris-muted);
  margin-bottom: 1rem;
}

.docs-sidebar ul { list-style: none; }

.docs-sidebar li {
  margin-bottom: 0.4rem;
}

.docs-sidebar li a {
  color: var(--iris-muted);
  font-size: 0.9rem;
  display: block;
  padding: 0.3rem 0.75rem;
  border-radius: 4px;
  transition: all 0.1s;
}

.docs-sidebar li a:hover {
  color: var(--iris-purple);
  background: rgba(108, 63, 160, 0.05);
  text-decoration: none;
}

.docs-sidebar li.active a {
  color: var(--iris-purple);
  background: rgba(108, 63, 160, 0.08);
  font-weight: 600;
}

.docs-content {
  padding: 2.5rem 3rem;
  max-width: 800px;
}

.docs-content h1 { margin-bottom: 1.5rem; }
.docs-content h2 { margin-top: 2.5rem; margin-bottom: 1rem; }
.docs-content h3 { margin-top: 2rem; margin-bottom: 0.75rem; }

.docs-content pre {
  background: var(--iris-code-bg);
  color: var(--iris-code-text);
  border-radius: 6px;
  padding: 1.25rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
  font-size: 0.85rem;
  line-height: 1.7;
}

.docs-content code {
  font-family: var(--font-mono);
}

.docs-content :not(pre) > code {
  background: rgba(108, 63, 160, 0.08);
  color: var(--iris-purple);
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  font-size: 0.88em;
}

.docs-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
}

.docs-content th, .docs-content td {
  text-align: left;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--iris-border);
}

.docs-content th {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--iris-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.docs-content ul, .docs-content ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.docs-content li { margin-bottom: 0.4rem; }

.docs-content blockquote {
  border-left: 3px solid var(--iris-purple);
  padding: 0.75rem 1.25rem;
  margin-bottom: 1.5rem;
  background: rgba(108, 63, 160, 0.04);
  color: var(--iris-muted);
}

/* ===== Page Content (non-docs) ===== */
.page-content {
  padding: 3rem 0;
}

.page-content .container { max-width: 800px; }

.page-content pre {
  background: var(--iris-code-bg);
  color: var(--iris-code-text);
  border-radius: 6px;
  padding: 1.25rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
  font-size: 0.85rem;
  line-height: 1.7;
}

.page-content code {
  font-family: var(--font-mono);
}

/* Chroma highlight wrapper (Hugo-generated) */
.highlight {
  margin-bottom: 1.5rem;
}

.highlight pre.chroma {
  border-radius: 6px;
  padding: 1.25rem;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.7;
  margin: 0;
}

.highlight pre.chroma code {
  font-family: var(--font-mono);
}

.page-content :not(pre) > code {
  background: rgba(108, 63, 160, 0.08);
  color: var(--iris-purple);
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  font-size: 0.88em;
}

.page-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
}

.page-content th, .page-content td {
  text-align: left;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--iris-border);
}

.page-content th {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--iris-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.page-content ul, .page-content ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.page-content li { margin-bottom: 0.4rem; }

.page-content h2 { margin-top: 2.5rem; margin-bottom: 1rem; }
.page-content h3 { margin-top: 2rem; margin-bottom: 0.75rem; }

/* ===== Footer ===== */
.site-footer {
  background: var(--iris-text);
  color: #aaa;
  padding: 3rem 0 1.5rem;
}

.footer-container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.site-footer h4 {
  color: #fff;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1rem;
}

.site-footer ul { list-style: none; }

.site-footer li { margin-bottom: 0.4rem; }

.site-footer a { color: #aaa; }
.site-footer a:hover { color: #fff; }

.footer-bottom {
  max-width: var(--container);
  margin: 2rem auto 0;
  padding: 1.5rem 1.5rem 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  font-size: 0.85rem;
}

/* ===== IRIS Syntax Highlighting ===== */
.hl-keyword { color: #CBA6F7; font-weight: 600; }
.hl-type { color: #89DCEB; }
.hl-builtin { color: #89B4FA; }
.hl-string { color: #A6E3A1; }
.hl-number { color: #FAB387; }
.hl-comment { color: #6C7086; font-style: italic; }
.hl-operator { color: #F38BA8; }
.hl-param { color: #F5C2E7; }
.hl-cost { color: #F9E2AF; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .docs-layout { grid-template-columns: 1fr; }
  .docs-sidebar {
    position: static;
    border-right: none;
    border-bottom: 1px solid var(--iris-border);
    max-height: none;
  }
  .docs-content { padding: 2rem 1.5rem; }
}

@media (max-width: 700px) {
  .hero h1 { font-size: 2rem; }
  .hero-sub { font-size: 1rem; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-container { grid-template-columns: 1fr; }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--iris-surface);
    border-bottom: 1px solid var(--iris-border);
    flex-direction: column;
    padding: 1rem 1.5rem;
    gap: 0.75rem;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
}