/* VioLens site. The colours follow the app: dark navy and cyan. */
:root {
  --bg: #0b0e1a;
  --bg-raised: #131826;
  --bg-sunken: #080a13;
  --border: #232a3d;
  --text: #e6e9f2;
  --muted: #9aa3b8;
  --accent: #2dd4e8;
  --accent-strong: #5ee2f0;
  --accent-ink: #062a30;
  --success: #34d399;
  --warn: #f5c451;
  --error: #f87171;
  --radius: 10px;
  --wrap: 1120px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", "Cascadia Mono", Consolas, ui-monospace, monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 76px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 var(--font);
}
img { max-width: 100%; height: auto; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent-strong); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
code, pre, kbd { font-family: var(--mono); font-size: 0.9em; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 32px; } }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 8px; z-index: 10; background: var(--bg-raised); padding: 8px 12px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 5;
  background: rgba(11, 14, 26, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 60px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; letter-spacing: 0.02em; }
.brand img { border-radius: 6px; }
.site-header nav { display: flex; gap: 4px; flex-wrap: wrap; }
.site-header nav a { color: var(--muted); text-decoration: none; padding: 6px 10px; border-radius: 6px; font-weight: 500; font-size: 15px; }
.site-header nav a:hover { color: var(--text); background: var(--bg-raised); }
.site-header nav a[aria-current="page"] { color: var(--text); background: var(--bg-raised); }

/* Footer */
.site-footer { border-top: 1px solid var(--border); margin-top: 80px; padding: 28px 0 40px; color: var(--muted); font-size: 14px; }
.footer-row p { margin: 0 0 6px; }
.footer-row .fine { font-size: 13px; }

/* Buttons */
.button {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px; border-radius: 8px;
  font-weight: 600; text-decoration: none; font-size: 15px;
  border: 1px solid var(--border); color: var(--text); background: var(--bg-raised);
}
.button:hover { color: var(--text); border-color: #36405a; background: #182036; }
.button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.button.primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); color: var(--accent-ink); }
.buttons { display: flex; gap: 10px; flex-wrap: wrap; }

/* Home: hero */
.hero { padding: 56px 0 24px; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -40% -10% auto; height: 520px; z-index: -1;
  background: radial-gradient(closest-side, rgba(45, 212, 232, 0.14), transparent);
}
.hero-grid { display: grid; gap: 32px; align-items: center; }
@media (min-width: 900px) { .hero-grid { grid-template-columns: 1.15fr 0.85fr; } }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 600; color: var(--accent); letter-spacing: 0.04em; text-transform: uppercase; margin-bottom: 12px; }
.hero h1 { font-size: clamp(34px, 6vw, 54px); line-height: 1.08; margin: 0 0 16px; letter-spacing: -0.02em; }
.hero h1 .accent { color: var(--accent); }
.hero .lede { font-size: 19px; color: var(--muted); max-width: 36em; margin: 0 0 24px; }
.hero .note { font-size: 14px; color: var(--muted); margin-top: 14px; }
.hero-emblem { justify-self: center; width: min(300px, 70vw); filter: drop-shadow(0 0 40px rgba(45, 212, 232, 0.25)); }

/* Home: the session-list illustration */
.mock {
  margin-top: 40px;
  background: var(--bg-raised); border: 1px solid var(--border); border-radius: 12px;
  overflow: hidden; box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
}
.mock-bar { display: flex; gap: 6px; padding: 10px 14px; border-bottom: 1px solid var(--border); background: var(--bg-sunken); }
.mock-bar span { width: 10px; height: 10px; border-radius: 50%; background: #2a3248; }
.mock-scroll { overflow-x: auto; }
.mock table { width: 100%; min-width: 720px; border-collapse: collapse; font: 13px/1.4 var(--mono); }
.mock th, .mock td { text-align: left; padding: 7px 12px; border-bottom: 1px solid var(--border); white-space: nowrap; }
.mock th { color: var(--muted); font: 600 12px var(--font); background: var(--bg-sunken); }
.mock td.url { color: var(--text); overflow: hidden; text-overflow: ellipsis; max-width: 320px; }
.mock .s2 { color: var(--success); }
.mock .s3 { color: var(--accent); }
.mock .s4 { color: var(--warn); }
.mock .s5 { color: var(--error); }
.mock tr.selected td { background: rgba(45, 212, 232, 0.10); }
.mock tr.found td { background: rgba(255, 242, 168, 0.12); }
.wf { position: relative; width: 220px; height: 10px; }
.wf i { position: absolute; top: 0; height: 10px; border-radius: 2px; }
.wf .q { background: #59627a; } .wf .d { background: #2bb3a3; } .wf .c { background: #f08c3a; }
.wf .t { background: #a77bf3; } .wf .w { background: #34d399; } .wf .r { background: #3b82f6; }
.mock-caption { font-size: 13px; color: var(--muted); text-align: center; margin: 12px 0 0; }

/* Sections */
.section { padding: 64px 0 0; }
.section h2 { font-size: clamp(24px, 3.4vw, 32px); margin: 0 0 10px; letter-spacing: -0.01em; }
.section .intro { color: var(--muted); max-width: 44em; margin: 0 0 28px; font-size: 17px; }
.cards { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }
.card { background: var(--bg-raised); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card .tag { display: inline-block; font: 600 11px var(--font); letter-spacing: 0.05em; text-transform: uppercase; color: var(--accent); margin-bottom: 8px; }
.split { display: grid; gap: 24px; }
@media (min-width: 860px) { .split { grid-template-columns: 1fr 1fr; } }
.panel { background: var(--bg-raised); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.panel h3 { margin-top: 0; }
.panel ul { margin: 0; padding-left: 20px; color: var(--muted); }
.panel li { margin: 6px 0; }
.panel li strong { color: var(--text); }

/* Prose pages (Download, About, User Guide) */
.prose { padding-top: 40px; max-width: 820px; }
.prose h1 { font-size: clamp(30px, 5vw, 42px); line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 12px; }
.prose h2 { font-size: 26px; margin: 48px 0 12px; padding-top: 8px; letter-spacing: -0.01em; }
.prose h3 { font-size: 20px; margin: 32px 0 8px; }
.prose p, .prose li { color: #d3d8e5; }
.prose li { margin: 4px 0; }
.prose .lede { font-size: 19px; color: var(--muted); }
.prose code { background: var(--bg-raised); border: 1px solid var(--border); border-radius: 5px; padding: 1px 5px; }
.prose pre { background: var(--bg-sunken); border: 1px solid var(--border); border-radius: 8px; padding: 14px 16px; overflow-x: auto; }
.prose pre code { background: none; border: 0; padding: 0; }
.prose table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 15px; display: block; overflow-x: auto; }
.prose th, .prose td { text-align: left; vertical-align: top; padding: 8px 12px; border-bottom: 1px solid var(--border); }
.prose th { color: var(--muted); font-weight: 600; background: var(--bg-raised); }
.prose blockquote { margin: 16px 0; padding: 4px 16px; border-left: 3px solid var(--accent); color: var(--muted); }
.prose hr { border: 0; border-top: 1px solid var(--border); margin: 40px 0; }
.callout { background: var(--bg-raised); border: 1px solid var(--border); border-left: 3px solid var(--accent); border-radius: 8px; padding: 14px 18px; margin: 20px 0; }
.callout p { margin: 0; }
.callout p + p { margin-top: 8px; }

/* Download cards */
.downloads { display: grid; gap: 16px; margin: 28px 0; }
@media (min-width: 720px) { .downloads { grid-template-columns: 1fr 1fr; } }
.download { background: var(--bg-raised); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; display: flex; flex-direction: column; gap: 10px; }
.download h2 { margin: 0; padding: 0; font-size: 22px; }
.download p, .download ul { margin: 0; color: var(--muted); font-size: 15px; }
.download ul { padding-left: 18px; }
.download .button { align-self: flex-start; margin-top: 6px; }

/* User Guide: contents on the left on wide screens */
.guide .prose { max-width: var(--wrap); }
.toc { background: var(--bg-raised); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 16px; margin: 20px 0 8px; font-size: 14px; }
.toc summary { cursor: pointer; font-weight: 600; color: var(--text); }
.toc ul { list-style: none; padding-left: 0; margin: 8px 0 0; }
.toc ul ul { padding-left: 14px; margin: 2px 0 4px; }
.toc li { margin: 2px 0; }
.toc a { color: var(--muted); text-decoration: none; }
.toc a:hover { color: var(--accent); }
@media (min-width: 1000px) {
  .guide .prose { display: grid; grid-template-columns: 250px minmax(0, 1fr); column-gap: 48px; row-gap: 0; }
  .guide .prose > * { grid-column: 2; max-width: 780px; }
  .guide .prose > .toc {
    grid-column: 1; grid-row: 1 / span 1000; align-self: start;
    position: sticky; top: 80px; max-height: calc(100vh - 100px); overflow: auto; margin-top: 0;
  }
  .guide .prose > .toc summary { display: none; }
}

/* Long code and URLs wrap rather than widening the page on phones. */
.prose p, .prose li, .prose td { overflow-wrap: anywhere; }