/*
  Girder's landing page. The colours are the app icon's: a blueprint's
  deep blue, steel's pale grey, and the red of a moment diagram.

  Author: Alexius Academia
  Date: 2026-10-04
*/

:root {
  --ink: #16233c;
  --ink-soft: #4d5b76;
  --paper: #ffffff;
  --mist: #f3f5f9;
  --line: #dde2ec;
  --blue: #2c5c9e;
  --blue-deep: #10224a;
  --steel: #e2e9f5;
  --coral: #e0563f;
  --green: #2a9a62;
  --radius: 14px;
  --wide: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--blue); }

.wrap { max-width: var(--wide); margin: 0 auto; padding: 0 24px; }
.wrap.narrow { max-width: 780px; }

h1, h2, h3 { line-height: 1.15; margin: 0; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.2rem, 5.2vw, 3.6rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.3rem); font-weight: 750; }
h3 { font-size: 1.15rem; font-weight: 700; }

.sub { color: var(--ink-soft); margin: 10px 0 0; max-width: 60ch; }

/* The bar at the top */

.top {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(16, 34, 74, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.bar { display: flex; align-items: center; justify-content: space-between; height: 60px; }

.brand { display: flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font-weight: 700; font-size: 1.1rem; }
.brand img { border-radius: 8px; }

nav { display: flex; align-items: center; gap: 22px; }
nav a { color: rgba(255, 255, 255, 0.78); text-decoration: none; font-size: 0.95rem; }
nav a:hover { color: #fff; }
nav .pill { color: var(--blue-deep); background: #fff; padding: 6px 16px; border-radius: 999px; font-weight: 600; }
nav .pill:hover { color: var(--blue-deep); background: var(--steel); }

/* The hero: a blueprint */

.hero {
  color: #fff;
  text-align: center;
  padding: 72px 0 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px) 0 0 / 44px 44px,
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px) 0 0 / 44px 44px,
    linear-gradient(180deg, var(--blue) 0%, var(--blue-deep) 78%);
}

.hero-icon { margin: 0 auto 22px; filter: drop-shadow(0 14px 26px rgba(0, 0, 0, 0.35)); }

.lead { max-width: 62ch; margin: 20px auto 0; font-size: 1.15rem; color: rgba(255, 255, 255, 0.86); }

.actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 30px; }

.button {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 650;
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.45);
  transition: transform 0.15s ease, background 0.15s ease;
}
.button:hover { transform: translateY(-1px); background: rgba(255, 255, 255, 0.1); }
.button.primary { background: var(--coral); border-color: var(--coral); }
.button.primary:hover { background: #cc4a35; }

.hero-shot {
  margin: 54px auto -150px;
  max-width: 1020px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 34px 80px rgba(8, 18, 44, 0.55);
  background: #fff;
}

/* Sections */

section { padding: 84px 0; }

.hero + .band { padding-top: 230px; }

.band { background: var(--mist); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 18px;
  margin-top: 36px;
}

.grid article {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  border-top: 3px solid var(--blue);
}
.grid article p { margin: 10px 0 0; color: var(--ink-soft); font-size: 0.98rem; }

/* The tour */

.step {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) minmax(0, 2fr);
  gap: 44px;
  align-items: center;
  margin-top: 64px;
}
.step.flip .words { order: 2; }
.step.flip { grid-template-columns: minmax(0, 2fr) minmax(240px, 1fr); }

.step img {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: 0 18px 44px rgba(22, 35, 60, 0.14);
}

.step p { color: var(--ink-soft); margin: 10px 0 0; }

.num {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--blue-deep);
  color: #fff;
  font-weight: 700;
  margin-bottom: 12px;
}

/* Examples */

.examples {
  list-style: none;
  padding: 0;
  margin: 32px 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 14px;
}
.examples li {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px 18px;
  color: var(--ink-soft);
  font-size: 0.95rem;
}
.examples strong { display: block; color: var(--ink); font-size: 1rem; margin-bottom: 2px; }

/* Limits */

.limits ul { margin: 26px 0 0; padding: 0; list-style: none; }
.limits li {
  padding: 12px 0 12px 30px;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.limits li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 23px;
  width: 12px;
  height: 2px;
  background: var(--coral);
}
.note {
  margin-top: 26px;
  padding: 16px 20px;
  background: var(--mist);
  border-left: 3px solid var(--blue);
  border-radius: 0 10px 10px 0;
  color: var(--ink-soft);
}

/* Downloads */

.cards { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 30px; }

.card {
  flex: 1 1 240px;
  max-width: 340px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 22px 24px;
  border-radius: var(--radius);
  background: var(--blue-deep);
  color: #fff;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
a.card:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(16, 34, 74, 0.3); }
.card strong { font-size: 1.2rem; }
.card span { color: rgba(255, 255, 255, 0.72); font-size: 0.92rem; }
.card.pending { background: var(--paper); color: var(--ink); border: 1px dashed #b8c2d6; }
.card.pending span { color: var(--ink-soft); }

/* The foot */

footer { background: var(--blue-deep); color: rgba(255, 255, 255, 0.7); padding: 26px 0; font-size: 0.92rem; }
footer a { color: #fff; }
.foot { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

/* Narrow screens */

@media (max-width: 760px) {
  nav a:not(.pill) { display: none; }
  .hero { padding-top: 48px; }
  .hero-shot { margin-bottom: -70px; }
  .hero + .band { padding-top: 130px; }
  section { padding: 60px 0; }
  .step, .step.flip { grid-template-columns: 1fr; gap: 20px; margin-top: 44px; }
  .step.flip .words { order: 0; }
}