/* RegexCraft public site — Microsoft-style blue palette (matches app Themes/Colors.axaml) */

:root {
  --primary-blue: #0078d4;
  --primary-blue-hover: #106ebe;
  --primary-blue-pressed: #005a9e;
  --accent-blue: #00a4ef;
  --accent-blue-soft: #e5f3ff;
  --bg-primary: #f0f3f7;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e8eef4;
  --border-subtle: #c8d1db;
  --border-strong: #7a8b9c;
  --text-primary: #1a1f26;
  --text-secondary: #4a5562;
  --text-muted: #6b7683;
  --text-on-primary: #ffffff;
  --success: #1a7f37;
  --shadow-sm: 0 1px 3px rgba(26, 31, 38, 0.08);
  --shadow-md: 0 4px 16px rgba(26, 31, 38, 0.1);
  --shadow-lg: 0 12px 40px rgba(0, 120, 212, 0.12);
  --radius: 10px;
  --radius-lg: 16px;
  --max-width: 1120px;
  --font: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "Cascadia Code", "SF Mono", "Consolas", "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #0f1419;
    --bg-secondary: #1a2332;
    --bg-tertiary: #243044;
    --border-subtle: #3a4a5c;
    --border-strong: #6b7c8f;
    --text-primary: #e8eef4;
    --text-secondary: #b0bcc8;
    --text-muted: #8a96a3;
    --accent-blue-soft: #0d2a45;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.4);
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--primary-blue);
  text-decoration: none;
}

a:hover {
  color: var(--primary-blue-hover);
  text-decoration: underline;
}

/* ——— Layout ——— */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ——— Header / Nav ——— */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg-secondary) 92%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 64px;
  padding: 0.5rem 0;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
}

.nav-brand:hover {
  color: var(--primary-blue);
  text-decoration: none;
}

.nav-brand img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  text-decoration: none;
  padding: 0.35rem 0;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--primary-blue);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 0.4rem 0.65rem;
  color: var(--text-primary);
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
}

@media (max-width: 720px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-subtle);
    padding: 0.75rem 1.25rem 1rem;
    gap: 0;
    box-shadow: var(--shadow-md);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li {
    border-bottom: 1px solid var(--border-subtle);
  }

  .nav-links a {
    display: block;
    padding: 0.75rem 0;
  }

  .nav-links .nav-cta {
    margin-top: 0.5rem;
    text-align: center;
  }
}

/* ——— Buttons ——— */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.35rem;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 8px;
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s, color 0.15s, box-shadow 0.15s;
  white-space: nowrap;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background: var(--primary-blue);
  color: var(--text-on-primary);
  border-color: var(--primary-blue);
}

.btn-primary:hover {
  background: var(--primary-blue-hover);
  border-color: var(--primary-blue-hover);
  color: var(--text-on-primary);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: transparent;
  color: var(--primary-blue);
  border-color: var(--primary-blue);
}

.btn-secondary:hover {
  background: var(--accent-blue-soft);
  color: var(--primary-blue-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border-subtle);
}

.btn-ghost:hover {
  border-color: var(--border-strong);
  color: var(--text-primary);
}

.btn-lg {
  padding: 0.9rem 1.75rem;
  font-size: 1.05rem;
}

.nav-cta .btn {
  padding: 0.45rem 1rem;
  font-size: 0.9rem;
}

/* ——— Hero ——— */

.hero {
  padding: 3.5rem 0 3rem;
  background:
    radial-gradient(ellipse 80% 60% at 70% 0%, color-mix(in srgb, var(--primary-blue) 12%, transparent), transparent),
    var(--bg-primary);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 2.5rem;
  align-items: center;
}

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

.hero-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary-blue);
  background: var(--accent-blue-soft);
  border: 1px solid color-mix(in srgb, var(--primary-blue) 25%, transparent);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 1rem;
  letter-spacing: 0.02em;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 4.5vw, 2.75rem);
  font-weight: 750;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.hero-lead {
  margin: 0 0 1.75rem;
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 36rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.hero-meta {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.hero-meta code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--bg-tertiary);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
}

.hero-shot {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
}

.hero-shot img {
  width: 100%;
}

/* ——— Sections ——— */

section {
  padding: 3.5rem 0;
}

.section-alt {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 2.5rem;
}

.section-header h2 {
  margin: 0 0 0.65rem;
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-header p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* ——— Feature cards ——— */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.25rem;
}

.feature-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 1.35rem 1.4rem;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.section-alt .feature-card {
  background: var(--bg-primary);
}

.feature-card:hover {
  border-color: color-mix(in srgb, var(--primary-blue) 40%, var(--border-subtle));
  box-shadow: var(--shadow-md);
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--accent-blue-soft);
  color: var(--primary-blue);
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 0.85rem;
  font-family: var(--font-mono);
}

.feature-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
  font-weight: 650;
}

.feature-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ——— Screenshots gallery ——— */

.gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

@media (max-width: 700px) {
  .gallery {
    grid-template-columns: 1fr;
  }
}

.gallery-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.gallery-item img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: top left;
  background: var(--bg-tertiary);
}

.gallery-item figcaption {
  padding: 0.65rem 1rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-subtle);
}

/* ——— Engines table ——— */

.engines-wrap {
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  background: var(--bg-secondary);
  box-shadow: var(--shadow-sm);
}

table.engines {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

table.engines th,
table.engines td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}

table.engines th {
  background: var(--bg-tertiary);
  font-weight: 650;
  color: var(--text-primary);
  white-space: nowrap;
}

table.engines tr:last-child td {
  border-bottom: none;
}

table.engines td {
  color: var(--text-secondary);
}

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 650;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  letter-spacing: 0.02em;
}

.badge-full {
  background: color-mix(in srgb, var(--success) 18%, transparent);
  color: var(--success);
}

.badge-high {
  background: var(--accent-blue-soft);
  color: var(--primary-blue);
}

.badge-approx {
  background: var(--bg-tertiary);
  color: var(--text-muted);
}

/* ——— CTA band ——— */

.cta-band {
  background: linear-gradient(135deg, var(--primary-blue) 0%, #005a9e 100%);
  color: var(--text-on-primary);
  padding: 3rem 0;
  text-align: center;
}

.cta-band h2 {
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
  color: inherit;
}

.cta-band p {
  margin: 0 0 1.5rem;
  opacity: 0.92;
  font-size: 1.05rem;
}

.cta-band .btn-primary {
  background: var(--bg-secondary);
  color: var(--primary-blue);
  border-color: var(--bg-secondary);
}

.cta-band .btn-primary:hover {
  background: var(--accent-blue-soft);
  border-color: var(--accent-blue-soft);
  color: var(--primary-blue-pressed);
}

.cta-band .btn-secondary {
  color: var(--text-on-primary);
  border-color: rgba(255, 255, 255, 0.55);
}

.cta-band .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text-on-primary);
}

.cta-band .hero-actions {
  justify-content: center;
  margin-bottom: 0;
}

/* ——— Page hero (inner pages) ——— */

.page-hero {
  padding: 2.5rem 0 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
}

.page-hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  letter-spacing: -0.02em;
}

.page-hero p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 40rem;
}

.page-content {
  padding: 2.5rem 0 3.5rem;
}

/* ——— Download cards ——— */

.platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 2rem;
}

.platform-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.platform-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
}

.platform-card p {
  margin: 0 0 0.75rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.note-box {
  background: var(--accent-blue-soft);
  border: 1px solid color-mix(in srgb, var(--primary-blue) 22%, transparent);
  border-radius: var(--radius);
  padding: 1.15rem 1.35rem;
  margin: 1.5rem 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.note-box strong {
  color: var(--text-primary);
}

/* ——— Docs list ——— */

.doc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

.doc-list a {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 1rem 1.15rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.doc-list a:hover {
  border-color: color-mix(in srgb, var(--primary-blue) 45%, var(--border-subtle));
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}

.doc-list .doc-title {
  font-weight: 650;
  color: var(--primary-blue);
  margin-bottom: 0.15rem;
}

.doc-list .doc-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ——— About prose ——— */

.prose {
  max-width: 680px;
}

.prose h2 {
  margin: 2rem 0 0.75rem;
  font-size: 1.35rem;
}

.prose p,
.prose li {
  color: var(--text-secondary);
}

.prose ul {
  padding-left: 1.25rem;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--bg-tertiary);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
}

/* ——— Footer ——— */

.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 2.5rem 0 2rem;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

@media (max-width: 700px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.footer-brand img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
}

.footer-col p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 280px;
}

.footer-col h4 {
  margin: 0 0 0.65rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

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

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

.footer-col a {
  color: var(--text-secondary);
  font-size: 0.92rem;
  text-decoration: none;
}

.footer-col a:hover {
  color: var(--primary-blue);
}

.footer-bottom {
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--text-muted);
}

.footer-bottom a:hover {
  color: var(--primary-blue);
}