/* ============================================
   CORASUN — Collectif des Radioamateurs du Sundgau
   Direction : dial de radio nocturne — fond profond
   bleu-pétrole, lueur ambre façon cadran rétro-éclairé,
   accents "trace d'oscillo" en vert-sauge, codes/fréquences
   en monospace façon afficheur numérique.
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@500;600&display=swap');

:root {
  --bg: #0E1A1F;
  --surface: #152329;
  --surface-raised: #1B2C33;
  --line: #26383F;
  --text: #E9E4D8;
  --text-muted: #8FA0A4;
  --amber: #E8A33D;
  --amber-dim: #B67C2A;
  --sage: #5C9285;
  --focus: #E8A33D;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'IBM Plex Sans', sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

h1, h2, h3, h4 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 0.5em;
  color: var(--text);
}

.mono {
  font-family: 'IBM Plex Mono', monospace;
}

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

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(14, 26, 31, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 14px;
  padding-bottom: 14px;
  max-width: 980px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
}

.brand img {
  height: 40px;
  width: auto;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 28px;
  margin: 0;
  padding: 0;
}

nav a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

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

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: 72px 0 56px;
  background:
    radial-gradient(ellipse at 20% -10%, rgba(232,163,61,0.12), transparent 55%),
    repeating-linear-gradient(180deg, rgba(92,146,133,0.05) 0px, rgba(92,146,133,0.05) 1px, transparent 1px, transparent 26px);
  border-bottom: 1px solid var(--line);
}

.hero .eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  color: var(--sage);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  margin-bottom: 10px;
}

.hero .tagline {
  color: var(--text-muted);
  font-size: 1.15rem;
  max-width: 46ch;
}

/* signature dial-tick divider */
.dial-rule {
  display: flex;
  align-items: center;
  gap: 3px;
  margin: 36px 0;
  height: 22px;
}
.dial-rule span {
  display: block;
  width: 2px;
  background: var(--line);
  height: 10px;
}
.dial-rule span:nth-child(5n) { height: 18px; background: var(--amber-dim); }
.dial-rule span:nth-child(10n) { height: 22px; background: var(--amber); }

/* ---------- Sections ---------- */

section.block {
  padding: 44px 0;
}

section.block + section.block {
  border-top: 1px solid var(--line);
}

.block h2 {
  font-size: 1.6rem;
  margin-bottom: 0.6em;
}

.block .lead {
  color: var(--text-muted);
  font-size: 1.02rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 28px;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: start;
}

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

.split h3 {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 10px;
}

/* ---------- Outing callout ---------- */

.callout {
  border-left: 3px solid var(--amber);
  background: var(--surface);
  padding: 18px 22px;
  border-radius: 0 8px 8px 0;
  margin: 28px 0;
}

.callout .mono { color: var(--sage); font-size: 0.85rem; display:block; margin-bottom: 6px; }

/* ---------- Videos ---------- */

.video-grid {
  display: grid;
  gap: 32px;
}

.video-item h3 {
  font-size: 1.15rem;
  margin-bottom: 6px;
}

.video-item p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: 6px;
}

.video-frame {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #000;
}

.video-frame iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  border: 0;
}

/* ---------- Map / legend ---------- */

.map-figure {
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: var(--surface);
}

.map-figure img {
  width: 100%;
}

.legend {
  display: flex;
  gap: 28px;
  padding: 18px 22px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.9rem;
  color: var(--text-muted);
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}

.legend .dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-right: 8px;
}

.legend .dot.relais { background: #E24C4C; }
.legend .dot.hotspot { background: #F2C230; }

/* ---------- DTMF codes ---------- */

.dtmf-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
  margin: 18px 0 8px;
}

.dtmf-chip {
  font-family: 'IBM Plex Mono', monospace;
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.dtmf-chip .code {
  color: var(--amber);
  font-weight: 600;
  font-size: 1.05rem;
}

.dtmf-chip .label {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ---------- CTA / dashboard button ---------- */

.cta-box {
  text-align: center;
  padding: 36px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
}

.cta-box p.mono {
  color: var(--sage);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.btn-dashboard {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--amber);
  color: #14232B;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  padding: 14px 30px;
  border-radius: 8px;
  text-decoration: none;
  transition: transform 0.15s ease, background 0.15s ease;
}

.btn-dashboard:hover {
  background: #F0B45B;
  text-decoration: none;
  transform: translateY(-1px);
}

/* ---------- Contact ---------- */

.contact-box {
  text-align: center;
  padding: 8px 0 4px;
}

.contact-box p {
  color: var(--text-muted);
  max-width: 50ch;
  margin: 0 auto 18px;
}

.btn-mail {
  display: inline-block;
  border: 1px solid var(--sage);
  color: var(--sage);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.95rem;
  padding: 12px 24px;
  border-radius: 8px;
}

.btn-mail:hover {
  background: var(--sage);
  color: var(--bg);
  text-decoration: none;
}

/* ---------- Footer ---------- */

footer {
  border-top: 1px solid var(--line);
  padding: 36px 0 48px;
  text-align: center;
}

footer .yt-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

footer .yt-link img { height: 22px; width: auto; }

footer .fine-print {
  margin-top: 22px;
  color: #5C6A6E;
  font-size: 0.8rem;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn-dashboard { transition: none; }
}