/* SPDX-FileCopyrightText: Vernum Projecten B.V. */
/* SPDX-License-Identifier: BUSL-1.1 */

/* FerroFED landing page: tokens and layout. Self-contained: a system font
   stack, no external asset, and light and dark through prefers-color-scheme.
   Relative URLs only. The accent is the "Azure & Iron" palette of
   assets/brand/tokens.css. */

:root {
  /* accent: azure, with darker and lighter steps for hover and fills */
  --fb-accent: #0369a1;
  --fb-accent-600: #075985;
  --fb-accent-050: #f0f9ff;
  --fb-on-accent: #ffffff;
  /* light theme: surface and ink from the brand tokens */
  --fb-bg: #ffffff;
  --fb-surface: #f8fafc;
  --fb-text: #0f172a;
  --fb-muted: #526070;
  --fb-border: #dbe3ec;
  --fb-shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 8px 24px rgba(15, 23, 42, 0.06);
  /* fonts */
  --fb-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --fb-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  /* layout */
  --fb-max: 1080px;
  --fb-radius: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    /* dark theme: the tile ground and mist text, azure-light as the voice */
    --fb-bg: #0b1020;
    --fb-surface: #121a2e;
    --fb-text: #f1f5f9;
    --fb-muted: #a3b0c2;
    --fb-border: #24304a;
    --fb-accent: #7dd3fc;
    --fb-accent-600: #bae6fd;
    --fb-accent-050: #0c1a2e;
    /* azure-light is a light fill, so text on it takes the tile ground */
    --fb-on-accent: #0b1020;
    --fb-shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.4);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--fb-sans);
  color: var(--fb-text);
  background: var(--fb-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--fb-accent); text-decoration: none; }
a:hover { color: var(--fb-accent-600); text-decoration: underline; }

img, svg { max-width: 100%; height: auto; }

code {
  font-family: var(--fb-mono);
  font-size: 0.88em;
  background: var(--fb-accent-050);
  padding: 0.1em 0.35em;
  border-radius: 5px;
}

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

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(180%) blur(12px);
  background: color-mix(in srgb, var(--fb-bg) 82%, transparent);
  border-bottom: 1px solid var(--fb-border);
}
.nav .wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
  height: 60px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  color: var(--fb-text);
}
.brand:hover { text-decoration: none; color: var(--fb-accent); }
.brand img { width: 28px; height: 28px; }
.nav-links {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 1.4rem;
  font-weight: 600;
  font-size: 0.95rem;
}
.nav-links a { color: var(--fb-muted); }
.nav-links a:hover { color: var(--fb-accent); text-decoration: none; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.7rem 1.25rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1rem;
  border: 1.5px solid transparent;
  transition: transform 0.06s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--fb-accent); color: var(--fb-on-accent); }
.btn-primary:hover { background: var(--fb-accent-600); color: var(--fb-on-accent); }
.btn-ghost { border-color: var(--fb-border); color: var(--fb-text); background: var(--fb-surface); }
.btn-ghost:hover { border-color: var(--fb-accent); color: var(--fb-accent); }

/* Hero */
.hero {
  position: relative;
  padding: clamp(3rem, 8vw, 5.5rem) 0 clamp(2.5rem, 6vw, 4rem);
  text-align: center;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 55% at 50% 0%, color-mix(in srgb, var(--fb-accent) 16%, transparent), transparent 70%),
    linear-gradient(180deg, var(--fb-accent-050), transparent 42%);
  pointer-events: none;
}
.hero > * { position: relative; }
.status {
  display: inline-block;
  margin: 0 auto 1.25rem;
  padding: 0.3rem 0.85rem;
  border-radius: 999px;
  background: var(--fb-accent-050);
  border: 1px solid var(--fb-border);
  color: var(--fb-accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.hero h1 {
  font-size: clamp(1.6rem, 3.6vw, 2.5rem);
  line-height: 1.2;
  margin: 0 auto 1rem;
  max-width: 24ch;
  letter-spacing: -0.01em;
}
.hero .sub {
  color: var(--fb-muted);
  font-size: clamp(1rem, 1.6vw, 1.18rem);
  max-width: 62ch;
  margin: 0 auto 2rem;
}
.hero-cta { display: flex; gap: 0.85rem; justify-content: center; flex-wrap: wrap; }
.hero .note {
  margin: 1.5rem auto 0;
  max-width: 60ch;
  color: var(--fb-muted);
  font-size: 0.86rem;
}

/* Section scaffolding */
section { padding: clamp(3rem, 7vw, 4.5rem) 0; }
.surface { background: var(--fb-surface); border-block: 1px solid var(--fb-border); }
.section-head { text-align: center; max-width: 62ch; margin: 0 auto 2.5rem; }
.section-head h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  margin: 0 0 0.6rem;
  letter-spacing: -0.01em;
}
.section-head p { color: var(--fb-muted); margin: 0; font-size: 1.05rem; }
.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--fb-accent);
  margin-bottom: 0.5rem;
}

.tag {
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--fb-muted);
  margin-bottom: 0.5rem;
}

/* Cards */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.1rem;
}
.card {
  background: var(--fb-bg);
  border: 1px solid var(--fb-border);
  border-radius: var(--fb-radius);
  padding: 1.5rem;
  transition: transform 0.1s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--fb-shadow);
  border-color: color-mix(in srgb, var(--fb-accent) 40%, var(--fb-border));
}
.card h3 { margin: 0 0 0.4rem; font-size: 1.08rem; }
.card p { margin: 0; color: var(--fb-muted); font-size: 0.94rem; }
.card code { font-size: 0.85em; }

.audiences { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }
.audience ul {
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

/* Status panel */
.status-panel {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  background: var(--fb-bg);
  border: 1px solid var(--fb-border);
  border-radius: var(--fb-radius);
  padding: clamp(1.75rem, 5vw, 2.75rem);
}
.status-panel h2 { margin: 0 0 0.75rem; font-size: clamp(1.3rem, 3vw, 1.8rem); }
.status-panel p { color: var(--fb-muted); margin: 0 auto 1rem; max-width: 60ch; }
.status-panel .hero-cta { margin-top: 1.5rem; }

/* The roadmap rendered from the open milestones by scripts/site/assemble.sh */
.roadmap {
  margin: 1.25rem 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.6rem;
}
.roadmap li {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.85rem;
  align-items: baseline;
  justify-content: center;
}
.roadmap .tag { margin: 0; }
.roadmap .due { color: var(--fb-muted); font-size: 0.9rem; }

/* Footer */
.footer {
  border-top: 1px solid var(--fb-border);
  background: var(--fb-surface);
  padding: 3rem 0 2.5rem;
  font-size: 0.92rem;
}
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: space-between;
  align-items: flex-start;
}
.footer-brand { max-width: 46ch; }
.footer-brand .brand { margin-bottom: 0.75rem; }
.footer-brand p { color: var(--fb-muted); margin: 0.35rem 0; }
.footer-links { display: flex; gap: 2.5rem; flex-wrap: wrap; }
.footer-links ul { list-style: none; margin: 0; padding: 0; }
.footer-links h4 { margin: 0 0 0.6rem; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--fb-text); }
.footer-links li { margin: 0.35rem 0; }
.footer-links a { color: var(--fb-muted); }
.footer-links a:hover { color: var(--fb-accent); }
.footer-note {
  margin-top: 2.25rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--fb-border);
  color: var(--fb-muted);
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 720px) {
  .nav-links { gap: 1rem; font-size: 0.9rem; }
  .nav-links .hide-sm { display: none; }
}

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