/* Sounding Atlas landing page. Hand-written, no framework.
   Look: a survey sheet. Paper ground, chart ink, one crimson for advisories, a deep-water band for Sheet 2. */
@font-face { font-family: 'Instrument Serif'; font-style: normal; font-weight: 400; font-display: swap; src: url(fonts/InstrumentSerif-400.woff2) format('woff2'); }
@font-face { font-family: 'Instrument Serif'; font-style: italic; font-weight: 400; font-display: swap; src: url(fonts/InstrumentSerif-400-italic.woff2) format('woff2'); }
@font-face { font-family: 'Libre Franklin'; font-style: normal; font-weight: 400; font-display: swap; src: url(fonts/LibreFranklin-400.woff2) format('woff2'); }
@font-face { font-family: 'Libre Franklin'; font-style: normal; font-weight: 600; font-display: swap; src: url(fonts/LibreFranklin-600.woff2) format('woff2'); }
@font-face { font-family: 'Libre Franklin'; font-style: italic; font-weight: 400; font-display: swap; src: url(fonts/LibreFranklin-400-italic.woff2) format('woff2'); }
@font-face { font-family: 'Space Mono'; font-style: normal; font-weight: 400; font-display: swap; src: url(fonts/SpaceMono-400.woff2) format('woff2'); }
@font-face { font-family: 'Space Mono'; font-style: normal; font-weight: 700; font-display: swap; src: url(fonts/SpaceMono-700.woff2) format('woff2'); }

:root {
  --paper: #e7ebe3;
  --panel: #eef1e9;
  --panel-alt: #e1e7dd;
  --ink: #10303f;
  --ink-soft: #3c5663;
  --rule: #a9b8b4;
  --link: #0f5f7d;
  --accent: #bf1049;
  --accent-bg: #f6e7ec;
  --deep-1: #0b2430;
  --deep-2: #12485c;
  --cyan: #7fe8d8;
  --serif: 'Instrument Serif', 'Times New Roman', serif;
  --sans: 'Libre Franklin', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'Space Mono', ui-monospace, Consolas, monospace;
  --gutter: 16px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1.0625rem/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
img, video { max-width: 100%; display: block; }
a { color: var(--link); }
.skip { position: absolute; left: -999px; top: 0; background: var(--ink); color: var(--paper); padding: 8px 12px; z-index: 50; }
.skip:focus { left: 0; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.wrap { width: min(1180px, 100% - 2 * var(--gutter)); margin-inline: auto; }
.label { font: 400 0.72rem/1.4 var(--mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-soft); margin: 0 0 0.6rem; }

/* top bar: a chart border with soundings ticks */
.bar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 10px max(var(--gutter), calc((100% - 1180px) / 2));
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--ink);
}
.bar-mark { white-space: nowrap; font: 400 1.5rem/1 var(--serif); color: var(--ink); text-decoration: none; letter-spacing: 0.01em; }
.bar-links { display: none; gap: 22px; }
.bar-links a { font: 400 0.72rem/1 var(--mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink); text-decoration: none; padding: 6px 0; border-bottom: 1px solid transparent; }
.bar-links a:hover { border-bottom-color: var(--accent); }
@media (min-width: 900px) { .bar-links { display: flex; } }

.btn {
  display: inline-block; text-align: center;
  font: 700 0.78rem/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; text-decoration: none;
  padding: 15px 20px; background: var(--ink); color: var(--paper); border: 1px solid var(--ink);
  transition: background 0.15s, color 0.15s;
}
.btn:hover { background: var(--accent); border-color: var(--accent); }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.btn-small { padding: 10px 14px; font-size: 0.7rem; }

/* hero */
.hero {
  position: relative;
  padding: 44px 0 56px;
  border-bottom: 1px solid var(--ink);
  background:
    radial-gradient(60rem 26rem at 88% 8%, rgba(18, 72, 92, 0.1), transparent 70%),
    repeating-linear-gradient(0deg, transparent 0 39px, rgba(16, 48, 63, 0.05) 39px 40px);
}
.hero-grid { display: grid; gap: 28px; align-items: center; }
@media (min-width: 960px) { .hero-grid { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 48px; } }
.pill { display: inline-flex; align-items: center; gap: 8px; font: 400 0.72rem/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; padding: 8px 12px; border: 1px solid var(--ink); background: var(--panel); margin: 0 0 22px; }
.pill-dot { width: 8px; height: 8px; border-radius: 50%; background: #2ea043; }
.wordmark { font: 400 clamp(3.4rem, 9vw, 6.4rem)/0.92 var(--serif); letter-spacing: -0.01em; margin: 0 0 18px; }
.tagline { font: 400 1.3rem/1.45 var(--sans); color: var(--ink); margin: 0 0 26px; max-width: 34rem; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-note { font: 400 0.72rem/1.6 var(--mono); letter-spacing: 0.08em; color: var(--ink-soft); margin: 20px 0 0; text-transform: uppercase; }

/* a framed plate for every clip or still */
.plate {
  margin: 0; position: relative;
  background: var(--panel);
  border: 1px solid var(--ink);
  padding: 8px;
  box-shadow: 8px 8px 0 -1px var(--panel-alt), 8px 8px 0 0 var(--rule);
}
.plate video, .plate img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; background: var(--panel-alt); border: 1px solid var(--rule); }
.plate figcaption { font: 400 0.7rem/1.4 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-soft); padding: 8px 2px 0; }

/* feature sections */
.feature { padding: 72px 0; border-bottom: 1px solid var(--rule); }
.feature .grid { display: grid; gap: 32px; align-items: center; }
@media (min-width: 960px) {
  .feature .grid { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 56px; }
  .feature.flip .grid { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
  .feature.flip .text { order: 2; }
}
.feature h2, .making h2, .credits h2, .gallery h2 { font: 400 clamp(2.1rem, 4.4vw, 3.2rem)/1.04 var(--serif); margin: 0 0 16px; }
.feature p { margin: 0 0 14px; max-width: 34rem; }
.feature p.label { max-width: none; }
.ticks { list-style: none; margin: 18px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.ticks li { font: 400 0.7rem/1 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; padding: 7px 10px; border: 1px solid var(--ink); background: var(--panel); }
.ticks li.adv { color: var(--accent); border-color: var(--accent); background: var(--accent-bg); }

/* the do-not-eat band */
.safety { background: var(--accent-bg); border-top: 1px solid var(--accent); border-bottom: 1px solid var(--accent); }
.safety .label { color: var(--accent); }
.safety .callout { font: 400 clamp(2.4rem, 8vw, 4.6rem)/0.95 var(--serif); color: var(--accent); margin: 0 0 8px; }

/* the descent: Sheet 2 in deep water */
.descent {
  padding: 80px 0;
  color: #e6f2f2;
  background: linear-gradient(180deg, var(--deep-2) 0%, var(--deep-1) 100%);
  border-bottom: 1px solid #000;
}
.descent .feature { padding: 0; border: 0; }
.descent .label { color: var(--cyan); }
.descent h2 { color: #fff; }
.descent a { color: var(--cyan); }
.descent .plate { background: #0d2c3a; border-color: var(--cyan); box-shadow: 8px 8px 0 -1px #0b2430, 8px 8px 0 0 rgba(127, 232, 216, 0.35); }
.descent .plate video { border-color: rgba(127, 232, 216, 0.4); background: #0b2430; }
.descent .plate figcaption { color: #9fc7cc; }

/* gallery */
.gallery { padding: 72px 0; }
.gallery h2 { text-align: center; }
.shots { display: grid; gap: 28px; margin-top: 32px; }
@media (min-width: 760px) { .shots { grid-template-columns: repeat(2, minmax(0, 1fr)); } .shots figure:last-child:nth-child(odd) { grid-column: 1 / -1; max-width: 640px; justify-self: center; } }

/* how it was made */
.making { padding: 72px 0; background: var(--panel); border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.making .lede { font: 400 1.25rem/1.5 var(--sans); max-width: 46rem; margin: 0 0 36px; }
.pillars { display: grid; gap: 28px; }
@media (min-width: 760px) { .pillars { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 36px 48px; } }
.pillars article { border-top: 2px solid var(--ink); padding-top: 14px; }
.pillars h3 { font: 400 1.7rem/1.1 var(--serif); margin: 0 0 8px; }
.pillars p { margin: 0 0 10px; }
.pillars code { font: 400 0.85em var(--mono); background: var(--panel-alt); padding: 1px 5px; }

/* credits */
.credits { padding: 64px 0 40px; }
.credits table { width: 100%; border-collapse: collapse; font-size: 0.95rem; margin-top: 18px; }
.credits th, .credits td { text-align: left; vertical-align: top; padding: 12px 14px 12px 0; border-top: 1px solid var(--rule); }
.credits th { font: 400 0.7rem/1.4 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-soft); }
.credits td:last-child { color: var(--ink-soft); }
@media (max-width: 719px) {
  .credits table, .credits tbody, .credits tr, .credits td { display: block; width: 100%; }
  .credits thead { display: none; }
  .credits tr { padding: 12px 0; border-top: 1px solid var(--rule); }
  .credits td { border: 0; padding: 2px 0; }
  .credits td:first-child { font-weight: 600; }
}
.fine { font: 400 0.8rem/1.6 var(--mono); color: var(--ink-soft); }
footer { padding: 28px 0 56px; border-top: 1px solid var(--ink); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 14px 28px; justify-content: space-between; align-items: baseline; }
footer p { margin: 0; }

@media (max-width: 599px) {
  .hero { padding-top: 28px; }
  .feature, .gallery, .making, .descent { padding: 52px 0; }
  .btn { flex: 1 1 100%; }
  .plate { box-shadow: 5px 5px 0 0 var(--rule); }
  .descent .plate { box-shadow: 5px 5px 0 0 rgba(127, 232, 216, 0.35); }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .btn { transition: none; } }