/* Crewwize landing page (REQ-009 §12).
 *
 * Self-hosted, no framework, no web font — the system stack renders instantly and
 * costs nothing, which is most of NFR-53 and NFR-54 earned before any tuning.
 * Dark by default with a light mode, because the product's own app is used at
 * night and the site should not look like a different company.
 */

:root {
  --sea:      #0b1620;
  --sea-2:    #12202b;
  --line:     #2b4055;
  --ink:      #dce6ef;
  --ink-dim:  #93a6b8;
  --foam:     #35d07f;
  --warn:     #e8a33d;
  --radius:   10px;
  --wrap:     72rem;
  color-scheme: dark light;
}

@media (prefers-color-scheme: light) {
  :root {
    --sea:     #ffffff;
    --sea-2:   #f2f6fa;
    --line:    #d3dde7;
    --ink:     #16232e;
    --ink-dim: #566878;
    --foam:    #12734a;
  }
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--sea);
  color: var(--ink);
  font: 400 clamp(1rem, 0.6vw + 0.9rem, 1.125rem)/1.65
        system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--foam); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

.skip {
  position: absolute; left: -9999px;
  background: var(--foam); color: var(--sea); padding: .6rem 1rem; border-radius: 0 0 var(--radius) 0;
}
.skip:focus { left: 0; top: 0; z-index: 10; }

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

.top {
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--sea) 88%, transparent);
  position: sticky; top: 0; z-index: 5;
  backdrop-filter: blur(8px);
}
.top-in { display: flex; align-items: center; gap: 1.5rem; min-height: 3.75rem; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: .55rem; font-size: 1.1rem; letter-spacing: .01em; }
.brand img { display: block; }
.top nav { display: flex; gap: 1.1rem; flex-wrap: wrap; margin-left: auto; font-size: .95rem; }
.top nav a { color: var(--ink-dim); text-decoration: none; }
.top nav a:hover { color: var(--ink); text-decoration: underline; }

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

.hero { padding: clamp(2.5rem, 6vw, 5rem) 0 clamp(2rem, 4vw, 3rem); }

.status {
  display: inline-block; margin: 0 0 1.5rem;
  border: 1px solid color-mix(in srgb, var(--warn) 45%, var(--line));
  border-radius: 999px; padding: .4rem .9rem;
  color: var(--warn); font-size: .875rem; line-height: 1.4;
  max-width: 52ch;
}

h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 5.2vw, 3.4rem);
  line-height: 1.1; letter-spacing: -0.02em; font-weight: 650;
  max-width: 34ch;
}

.lede { margin: 0 0 1.75rem; max-width: 68ch; color: var(--ink); font-size: 1.075em; }

.keyfacts { display: flex; flex-wrap: wrap; gap: 1rem 2.5rem; margin: 0; padding: 0; list-style: none; }
.keyfacts li { display: flex; flex-direction: column; }
.keyfacts b { font-size: clamp(1.5rem, 3vw, 2.1rem); line-height: 1.1; color: var(--foam); font-weight: 650; }
.keyfacts span { color: var(--ink-dim); font-size: .9rem; }

/* Bands ------------------------------------------------------------------- */

.band { padding: clamp(2.25rem, 5vw, 3.5rem) 0; border-top: 1px solid var(--line); }

h2 {
  margin: 0 0 1.5rem;
  font-size: clamp(1.375rem, 2.6vw, 1.9rem);
  line-height: 1.2; letter-spacing: -0.01em; font-weight: 620;
}

h3 { margin: 0 0 .5rem; font-size: 1.0625rem; line-height: 1.3; font-weight: 620; }

.prose p { max-width: 74ch; margin: 0 0 1.1rem; }
.prose p:last-child { margin-bottom: 0; }

/* Cards ------------------------------------------------------------------- */

.grid {
  display: grid; gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 19rem), 1fr));
}
.card {
  background: var(--sea-2); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.25rem;
}
.card p { margin: 0; color: var(--ink-dim); }

/* Lists ------------------------------------------------------------------- */

.list { margin: 0; padding: 0; list-style: none; max-width: 82ch; }
.list li {
  position: relative; padding: .7rem 0 .7rem 1.6rem;
  border-bottom: 1px solid var(--line);
}
.list li:last-child { border-bottom: 0; }
.list li::before {
  content: ""; position: absolute; left: .25rem; top: 1.25rem;
  width: .45rem; height: .45rem; border-radius: 50%;
  background: var(--foam);
}

.limits { background: var(--sea-2); }
.limits .list li::before { background: var(--warn); }

/* FAQ --------------------------------------------------------------------- */

.qa { max-width: 82ch; }
.qa details { border-bottom: 1px solid var(--line); }
.qa summary {
  cursor: pointer; padding: .9rem 0; font-weight: 560;
  list-style: none; display: flex; align-items: baseline; gap: .6rem;
}
.qa summary::-webkit-details-marker { display: none; }
.qa summary::before { content: "+"; color: var(--foam); font-weight: 700; }
.qa details[open] summary::before { content: "\2212"; }
.qa details p { margin: 0 0 1.1rem; color: var(--ink-dim); padding-left: 1.2rem; }

/* Contact and footer ------------------------------------------------------ */

.contact p { max-width: 68ch; margin: 0; }

.foot { border-top: 1px solid var(--line); padding: 2rem 0 3rem; color: var(--ink-dim); font-size: .9rem; }
.foot p { margin: 0 0 .5rem; }
.fine { max-width: 74ch; }

/* Reduced motion: there is no motion here, and there should not be. */