/* Elemental Earth Data — minimal, accessible single-page styles */
:root {
  --bg: #f6f9fb;
  --text: #14212b;
  --muted: #51606b;
  --accent: #0b6fa4;   /* ocean blue */
  --accent-2: #2fbf71; /* kelp/green */
  --card: #ffffff;
  --shadow: 0 4px 20px rgba(0,0,0,0.06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d141a;
    --text: #e6eef3;
    --muted: #9db2bf;
    --accent: #57b6f2;
    --accent-2: #50d38a;
    --card: #111a21;
    --shadow: none;
  }
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font: 16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 80% -100px, rgba(47,191,113,0.12), transparent 60%),
    radial-gradient(1200px 600px at -10% 10%, rgba(11,111,164,0.10), transparent 50%),
    var(--bg);
}

.wrap {
  max-width: 72ch;
  padding: 1.25rem;
  margin: 0 auto;
}

.site-header {
  border-bottom: 1px solid rgba(0,0,0,0.06);
  background: linear-gradient(180deg, rgba(11,111,164,0.08), transparent 60%);
}
@media (prefers-color-scheme: dark) {
  .site-header { border-bottom-color: rgba(255,255,255,0.08); }
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0;
  color: var(--accent);
}

.logo { flex: 0 0 auto; }
.wordmark strong { display: block; font-size: 1.125rem; letter-spacing: 0.2px; }
.wordmark span { color: var(--muted); font-size: 0.95rem; }

.hero {
  padding: 2.5rem 0 1.25rem;
}

.lead {
  font-size: 1.35rem;
  margin: 0.25rem 0 1rem;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0;
  list-style: none;
  margin: 0.5rem 0 0;
}
.badges li {
  background: var(--card);
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  box-shadow: var(--shadow);
  font-size: 0.9rem;
}
@media (prefers-color-scheme: dark) {
  .badges li { border-color: rgba(255,255,255,0.08); }
}

.list {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 0;
}
.list li {
  background: var(--card);
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: 12px;
  padding: 0.75rem 0.9rem;
  margin: 0.5rem 0;
  box-shadow: var(--shadow);
}
@media (prefers-color-scheme: dark) {
  .list li { border-color: rgba(255,255,255,0.08); }
}

.btn {
  display: inline-block;
  padding: 0.6rem 0.9rem;
  border-radius: 10px;
  background: var(--accent);
  color: white;
  text-decoration: none;
  font-weight: 600;
  border: 2px solid var(--accent);
  transition: transform 0.08s ease, box-shadow 0.2s ease;
  box-shadow: 0 6px 16px rgba(11,111,164,0.25);
  margin-right: 0.5rem;
}
.btn:hover, .btn:focus {
  transform: translateY(-1px);
  outline: none;
  box-shadow: 0 10px 24px rgba(11,111,164,0.35);
}
.btn:active { transform: translateY(0); }

.btn-outline {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: none;
}
.btn-outline:hover, .btn-outline:focus {
  background: color-mix(in srgb, var(--accent) 12%, transparent);
}

.site-footer {
  margin-top: 2rem;
  padding: 1rem 0 3rem;
  color: var(--muted);
  border-top: 1px solid rgba(0,0,0,0.06);
}
@media (prefers-color-scheme: dark) {
  .site-footer { border-top-color: rgba(255,255,255,0.08); }
}

/* Accessibility helpers */
.skip {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.skip:focus {
  left: 1rem;
  top: 1rem;
  width: auto;
  height: auto;
  background: var(--card);
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  box-shadow: var(--shadow);
  z-index: 1000;
}
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  border: 0; clip: rect(0 0 0 0);
  overflow: hidden; white-space: nowrap;
}

/* Print */
@media print {
  .btn, .site-header { display: none; }
  .wrap { max-width: none; }
}