/* Chappelly site styles. Plain CSS, no build step. */

:root {
  --bg: #ffffff;
  --bg-alt: #f5f7fa;
  --surface: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-muted: #475569;
  --accent: #0284c7;
  --accent-hover: #0369a1;
  --accent-soft: #e0f2fe;
  --badge-progress-bg: #dcfce7;
  --badge-progress-text: #166534;
  --badge-soon-bg: #f1f5f9;
  --badge-soon-text: #475569;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 8px 24px rgba(15, 23, 42, 0.06);
  --radius: 12px;
  --max-width: 1040px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --bg-alt: #101a2c;
    --surface: #131e33;
    --border: #243349;
    --text: #e6edf7;
    --text-muted: #9fb0c7;
    --accent: #38bdf8;
    --accent-hover: #7dd3fc;
    --accent-soft: #0c2a3d;
    --badge-progress-bg: #123524;
    --badge-progress-text: #86efac;
    --badge-soon-bg: #1c2a40;
    --badge-soon-text: #9fb0c7;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover,
a:focus-visible {
  color: var(--accent-hover);
  text-decoration: underline;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
}

h3 {
  font-size: 1.25rem;
  font-weight: 700;
}

p {
  margin: 0 0 1em;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.container.narrow {
  max-width: 720px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 8px;
  top: -100px;
  padding: 8px 12px;
  background: var(--accent);
  color: #fff;
  border-radius: 6px;
  z-index: 100;
}

.skip-link:focus {
  top: 8px;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
  position: relative;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  font-size: 1.125rem;
}

.brand:hover,
.brand:focus-visible {
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  width: 32px;
  height: 32px;
  color: var(--accent);
}

.site-nav {
  display: flex;
  gap: 24px;
}

.site-nav a {
  color: var(--text-muted);
  font-weight: 500;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(4) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 640px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    left: -20px;
    right: -20px;
    top: 100%;
    flex-direction: column;
    gap: 0;
    padding: 8px 20px 16px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
  }

  .site-nav a:last-child {
    border-bottom: 0;
  }
}

/* Hero */

.hero {
  padding: 96px 0 72px;
  background:
    radial-gradient(60% 50% at 80% 0%, var(--accent-soft) 0%, transparent 70%),
    var(--bg);
}

.hero h1 {
  max-width: 18ch;
}

.eyebrow {
  margin: 0 0 16px;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.lead {
  max-width: 56ch;
  font-size: 1.125rem;
  color: var(--text-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.button:hover,
.button:focus-visible {
  text-decoration: none;
}

.button-primary {
  background: var(--accent);
  color: #fff;
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--accent-hover);
  color: #fff;
}

.button-ghost {
  border-color: var(--border);
  color: var(--text);
}

.button-ghost:hover,
.button-ghost:focus-visible {
  border-color: var(--text-muted);
  color: var(--text);
}

/* Sections */

.section {
  padding: 72px 0;
}

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

.section-intro {
  color: var(--text-muted);
  margin-bottom: 32px;
}

/* App cards */

.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.app-card {
  display: flex;
  flex-direction: column;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.app-card p:last-child {
  margin-bottom: 0;
}

.app-card-soon {
  box-shadow: none;
  border-style: dashed;
}

.app-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.app-card-header h3 {
  margin-bottom: 4px;
}

.app-icon {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  flex-shrink: 0;
}

.app-icon-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--badge-soon-bg);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

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

.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge-progress {
  background: var(--badge-progress-bg);
  color: var(--badge-progress-text);
}

.badge-soon {
  background: var(--badge-soon-bg);
  color: var(--badge-soon-text);
}

.feature-list {
  margin: 0 0 16px;
  padding-left: 20px;
  color: var(--text-muted);
}

.feature-list li {
  margin-bottom: 4px;
}

.app-links {
  margin-top: auto;
  font-weight: 600;
}

/* About */

.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
  margin: 32px 0 0;
}

.facts div {
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.facts dt {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.facts dd {
  margin: 0;
  font-weight: 600;
}

/* Contact */

.contact-email {
  font-size: 1.25rem;
  font-weight: 600;
}

/* Footer */

.site-footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
}

.footer-inner p {
  margin: 0;
}