/* C2R Marketing — draft site styles. Hand-written CSS, no framework. */

:root {
  --bg: #ffffff;
  --bg-alt: #f6f8fb;
  --ink: #17202e;
  --muted: #55606f;
  --accent: #2547f4;
  --accent-dark: #1b37c4;
  --hero-bg: #0f172a;
  --hero-ink: #f1f5f9;
  --hero-muted: #b6c2d6;
  --card-border: #e3e8f0;
  --radius: 12px;
  --max-w: 1100px;
  --narrow-w: 720px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 1.0625rem;
}

h1, h2, h3 {
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.25rem); }
h3 { font-size: 1.2rem; margin-bottom: 0.4em; }

p { margin: 0 0 1em; }

a { color: var(--accent); }
a:hover { color: var(--accent-dark); }

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

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

.narrow { max-width: var(--narrow-w); }
.text-center { text-align: center; }

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 0.6rem 1rem;
  z-index: 100;
  border-radius: 0 0 6px 0;
}
.skip-link:focus { left: 0; }

/* Screen-reader only */
.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;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--card-border);
  backdrop-filter: blur(6px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--ink);
  font-weight: 700;
  font-size: 1.1rem;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  border-radius: 8px;
  padding: 0.3rem 0.5rem;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list a {
  text-decoration: none;
  color: var(--ink);
  font-weight: 500;
  font-size: 1rem;
}
.nav-list a:hover { color: var(--accent); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 0.55rem 0.7rem;
  cursor: pointer;
}

.hamburger {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  position: relative;
}
.hamburger::before,
.hamburger::after {
  content: "";
  position: absolute;
  left: 0;
  width: 22px;
  height: 2px;
  background: var(--ink);
}
.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

/* Buttons */
.btn {
  display: inline-block;
  text-decoration: none;
  font-weight: 600;
  border-radius: 10px;
  padding: 0.75rem 1.4rem;
  border: 2px solid transparent;
  cursor: pointer;
  font-size: 1rem;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-dark); color: #fff; }

.btn-ghost {
  border-color: rgba(255, 255, 255, 0.45);
  color: var(--hero-ink);
}
.btn-ghost:hover { border-color: #fff; color: #fff; }

.btn-small { padding: 0.5rem 1rem; font-size: 0.95rem; }
.btn-large { padding: 0.9rem 1.8rem; font-size: 1.1rem; }

/* Hero */
.hero {
  background: var(--hero-bg);
  color: var(--hero-ink);
  padding: 5rem 0 5.5rem;
}

.hero .eyebrow { color: #9fb2ff; }
.hero h1 { color: #fff; margin-bottom: 0.5em; }
.hero .lede {
  color: var(--hero-muted);
  font-size: 1.2rem;
  max-width: 44rem;
  margin-bottom: 2rem;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Sections */
.section { padding: 4.5rem 0; }
.section-alt { background: var(--bg-alt); }
/* Keep anchored sections clear of the sticky header (QA fix 2026-10-09) */
section[id] { scroll-margin-top: 5rem; }

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  margin: 0 0 0.5rem;
}

.section-intro {
  color: var(--muted);
  max-width: 46rem;
  margin-bottom: 2.5rem;
  font-size: 1.1rem;
}

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

.card {
  background: #fff;
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}

.card p:last-child { margin-bottom: 0; }
.card h3 { margin-top: 0.5rem; }

.card-sub {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--muted);
  margin-top: 0.25rem;
}

.card-flagship { border: 2px solid var(--accent); }

.status { margin: 0 0 0.25rem; }

.badge {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
}

.badge-live { background: #dcfce7; color: #166534; }
.badge-dev { background: #fef3c7; color: #92400e; }
.badge-pre { background: #ede9fe; color: #5b21b6; }

.flag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  margin-left: 0.4rem;
}

/* CTA band */
.cta-band {
  margin-top: 3rem;
  background: var(--hero-bg);
  color: var(--hero-ink);
  border-radius: var(--radius);
  padding: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.cta-band p {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: #fff;
}

/* Footer */
.site-footer {
  background: var(--hero-bg);
  color: var(--hero-muted);
  padding: 2rem 0;
}
.footer-inner p { margin: 0; font-size: 0.95rem; }

/* Responsive */
@media (max-width: 900px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .card-grid { grid-template-columns: 1fr; }
  .section { padding: 3.25rem 0; }
  .hero { padding: 3.5rem 0 4rem; }

  .nav-toggle { display: block; }

  .nav-list {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    border-bottom: 1px solid var(--card-border);
    padding: 0.5rem 1.25rem 1rem;
  }
  .nav-list.open { display: flex; }
  .nav-list li { border-top: 1px solid var(--card-border); }
  .nav-list li:first-child { border-top: none; }
  .nav-list a {
    display: block;
    padding: 0.75rem 0;
  }
  .nav-list .btn { margin-top: 0.5rem; text-align: center; }

  .cta-band { padding: 1.75rem; }
}