/* Shortwave Atlas site. Palette from the app (ui/src/styles.css): night side by default. */

@font-face { font-family: 'Big Shoulders Display'; font-weight: 700; font-display: swap; src: url(../fonts/big-shoulders-display-latin-700-normal.woff2) format('woff2'); }
@font-face { font-family: 'Big Shoulders Display'; font-weight: 800; font-display: swap; src: url(../fonts/big-shoulders-display-latin-800-normal.woff2) format('woff2'); }
@font-face { font-family: 'IBM Plex Sans'; font-weight: 400; font-display: swap; src: url(../fonts/ibm-plex-sans-latin-400-normal.woff2) format('woff2'); }
@font-face { font-family: 'IBM Plex Sans'; font-weight: 500; font-display: swap; src: url(../fonts/ibm-plex-sans-latin-500-normal.woff2) format('woff2'); }
@font-face { font-family: 'IBM Plex Mono'; font-weight: 400; font-display: swap; src: url(../fonts/ibm-plex-mono-latin-400-normal.woff2) format('woff2'); }
@font-face { font-family: 'Goldman'; font-weight: 400; font-display: swap; src: url(../fonts/goldman-latin-400-normal.woff2) format('woff2'); }

:root {
  --ink: #070d15;
  --panel: #0c1520;
  --line: rgba(140, 185, 230, 0.14);
  --line-strong: rgba(140, 185, 230, 0.3);
  --text: #d6e2ef;
  --dim: #8fa3b8;
  --amber: #ffb33f;
  --amber-ink: #1a1206;
  --amber-soft: rgba(255, 179, 63, 0.14);
  --cool: #7fd0ff;
  --ok: #7ee2a8;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
  --glow: radial-gradient(ellipse 80% 60% at 75% 0%, rgba(127, 208, 255, 0.13), transparent 70%),
    radial-gradient(ellipse 60% 50% at 5% 5%, rgba(255, 179, 63, 0.08), transparent 70%);

  --font-display: 'Big Shoulders Display', 'Arial Narrow', sans-serif;
  --font-body: 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, Menlo, Consolas, monospace;
  --font-freq: 'Goldman', var(--font-display);

  --radius: 14px;
  --gutter: 16px;
  --max: 1120px;
  color-scheme: dark;
}

/* Day side: only when the visitor picks it with the theme button. */
:root[data-theme='light'] {
  --ink: #f4f1ea;
  --panel: #ffffff;
  --line: rgba(20, 45, 75, 0.12);
  --line-strong: rgba(20, 45, 75, 0.28);
  --text: #14202d;
  --dim: #4f6072;
  --amber: #b86a00;
  --amber-ink: #ffffff;
  --amber-soft: rgba(184, 106, 0, 0.1);
  --cool: #0a6aa8;
  --ok: #1f7a4a;
  --shadow: 0 30px 70px rgba(20, 45, 75, 0.22);
  --glow: radial-gradient(ellipse 80% 60% at 75% 0%, rgba(10, 106, 168, 0.08), transparent 70%);
  color-scheme: light;
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--ink);
  background-image: var(--glow);
  background-repeat: no-repeat;
  color: var(--text);
  font: 400 17px/1.6 var(--font-body);
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--cool); text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: 0.01em;
  margin: 0 0 0.4em;
}

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

.skip { position: absolute; left: -9999px; }
.skip:focus { left: var(--gutter); top: 8px; z-index: 10; background: var(--panel); padding: 8px 12px; border-radius: 8px; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 999px;
  font: 500 16px/1 var(--font-body);
  text-decoration: none;
  border: 1px solid var(--line-strong);
  color: var(--text);
}
.btn:hover { border-color: var(--text); }
.btn-primary { background: var(--amber); border-color: var(--amber); color: var(--amber-ink); }
.btn-primary:hover { filter: brightness(1.08); border-color: var(--amber); }

/* Header */
.top { border-bottom: 1px solid var(--line); }
.bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  min-height: 64px;
  padding-block: 8px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font: 800 22px/1 var(--font-display);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.brand img { border-radius: 8px; }
.nav { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 18px; }
.nav a { color: var(--dim); text-decoration: none; font-size: 15px; padding: 6px 0; }
.nav a:hover { color: var(--text); }
.theme {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--dim);
  cursor: pointer;
}
.theme:hover { color: var(--amber); }

/* Hero */
.hero { padding-block: 64px 32px; text-align: center; }
.kicker {
  display: inline-block;
  font: 400 13px/1 var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--amber);
  margin-bottom: 18px;
}
.hero h1 { font-size: clamp(48px, 9vw, 96px); }
.lede { max-width: 720px; margin: 0 auto 28px; color: var(--dim); font-size: clamp(17px, 2.2vw, 19px); }
.ctas { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 20px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  font: 400 13px/1.4 var(--font-mono);
  color: var(--dim);
}
.meta .ok { color: var(--ok); }
.freq { font-family: var(--font-freq); color: var(--amber); }

.shot {
  margin: 40px auto 0;
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  overflow: hidden;
  box-shadow: var(--shadow);
}

/* Value blocks */
.section { padding-block: 72px 0; }
.section > h2 { font-size: clamp(34px, 5vw, 52px); text-align: center; margin-bottom: 36px; }
.values { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.card h3 { font-size: 28px; margin: 0; }
.card p { margin: 0; color: var(--dim); }
.card img { border-radius: 10px; border: 1px solid var(--line); margin-top: auto; }

/* Closing call to action */
.closing { text-align: center; padding-block: 88px 0; }
.closing h2 { font-size: clamp(34px, 5vw, 52px); }
.closing p { color: var(--dim); margin: 0 0 24px; }

/* 404 */
.lost { text-align: center; padding-block: 120px 0; }
.lost h1 { font-size: clamp(44px, 8vw, 80px); }
.lost p { color: var(--dim); }

/* Footer */
.foot { border-top: 1px solid var(--line); margin-top: 96px; color: var(--dim); font-size: 14px; }
.foot .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; padding-block: 24px; }
.foot p { margin: 0; }
.foot a { color: var(--dim); }
.foot .links { display: flex; gap: 16px; }