/* SOLIT2 Simulator home page. No script, no external request: the fonts are the two the reports ship.
   Colours are the app's own (app/palette.py): engineering blue on navy, with steam for light fills. */
@font-face {
  font-family: "Inter";
  src: url("assets/fonts/Inter-Latin.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("assets/fonts/JetBrainsMono-Latin.woff2") format("woff2");
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
}

:root {
  --navy: #0B2545;
  --blue: #1F5FAD;
  --blue-light: #6FA6E8;
  --steam: #DCE8F6;
  --bg: #F5F7FB;
  --surface: #FFFFFF;
  --alt: #EAF0F8;
  --text: #14213D;
  --muted: #475972;
  --line: #D3DCE8;
  --on-navy: #E6EDF7;
  --on-navy-muted: #B5C4DB;
  --warn: #8A5A00;
  --warn-bg: #FFF4DB;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(11, 37, 69, .06), 0 8px 24px rgba(11, 37, 69, .08);
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0A1424;
    --surface: #10223A;
    --alt: #0D1B2F;
    --text: #E6EDF7;
    --muted: #A9B8CF;
    --line: #26395A;
    --steam: #16304F;
    --warn: #F2C46B;
    --warn-bg: #2B2410;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .35);
  }
}
:root[data-theme="dark"] {
  --bg: #0A1424; --surface: #10223A; --alt: #0D1B2F; --text: #E6EDF7; --muted: #A9B8CF;
  --line: #26395A; --steam: #16304F; --warn: #F2C46B; --warn-bg: #2B2410;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 1.0625rem/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-underline-offset: 3px; }
@media (prefers-color-scheme: dark) { a { color: var(--blue-light); } }
h1, h2, h3 { line-height: 1.2; letter-spacing: -0.015em; margin: 0 0 .6em; color: inherit; }
h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 600; }
p { margin: 0 0 1em; }

:focus-visible { outline: 3px solid var(--blue-light); outline-offset: 3px; border-radius: 4px; }
.skip {
  position: absolute; left: 12px; top: -60px; z-index: 20; background: var(--navy); color: #fff;
  padding: .6rem 1rem; border-radius: 8px; text-decoration: none;
}
.skip:focus { top: 12px; }

.wrap { width: min(1120px, 100% - 2rem); margin-inline: auto; }
.narrow { width: min(760px, 100% - 2rem); }

/* Top bar */
.bar { position: sticky; top: 0; z-index: 10; background: var(--navy); border-bottom: 3px solid var(--blue); }
.bar-in { display: flex; align-items: center; gap: 1.25rem; min-height: 60px; }
.brand { display: flex; align-items: center; gap: .6rem; color: #fff; text-decoration: none; margin-right: auto; }
.brand-name { font-weight: 700; letter-spacing: -0.01em; white-space: nowrap; }
.links { display: flex; gap: 1.1rem; }
.links a { color: var(--on-navy-muted); text-decoration: none; font-size: .95rem; padding: .35rem 0; border-bottom: 2px solid transparent; }
.links a:hover { color: #fff; border-bottom-color: var(--blue-light); }
.bar-actions { display: flex; align-items: center; gap: 1rem; }
.bar .login { color: var(--on-navy); text-decoration: none; font-weight: 500; }
.bar .login:hover { color: #fff; text-decoration: underline; }
@media (max-width: 900px) { .links { display: none; } }
@media (max-width: 480px) {
  .bar .login { display: none; }
  .brand-name { font-size: .95rem; }
  .bar-in { gap: .6rem; }
  .bar .btn.small { white-space: nowrap; padding: .45rem .8rem; font-size: .85rem; }
  .actions .btn { flex: 1 1 100%; text-align: center; }
}

/* Buttons */
.btn {
  display: inline-block; background: var(--blue); color: #fff; text-decoration: none; font-weight: 600;
  padding: .8rem 1.4rem; border-radius: 10px; border: 1px solid var(--blue); line-height: 1.2;
  transition: background .15s, transform .15s;
}
.btn:hover { background: #17508F; }
.btn.small { padding: .5rem 1rem; font-size: .95rem; background: var(--blue-light); border-color: var(--blue-light); color: var(--navy); }
.btn.small:hover { background: #8DBBF0; }
.btn.ghost { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .45); }
.btn.ghost:hover { background: rgba(255, 255, 255, .1); }
.actions { display: flex; flex-wrap: wrap; gap: .8rem; margin: 1.6rem 0 0; }
@media (prefers-reduced-motion: no-preference) { .btn:hover { transform: translateY(-1px); } }

/* Hero */
.hero { background: linear-gradient(180deg, var(--navy) 0%, #0F3160 100%); color: var(--on-navy); padding: 4rem 0 4.5rem; }
.hero-in { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 3rem; align-items: center; }
.hero h1 { color: #fff; }
.eyebrow { font: 500 .78rem/1.3 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--blue); margin: 0 0 .9rem; }
.hero .eyebrow { color: var(--blue-light); }
@media (prefers-color-scheme: dark) { .eyebrow { color: var(--blue-light); } }
.lead { font-size: 1.2rem; color: var(--on-navy); max-width: 34em; }
.proofs { list-style: none; padding: 0; margin: 2rem 0 0; display: grid; grid-template-columns: 1fr 1fr; gap: .9rem 1.4rem; color: var(--on-navy-muted); font-size: .92rem; line-height: 1.4; }
.proofs strong { display: block; color: #fff; font-size: 1.02rem; }
@media (max-width: 920px) { .hero-in { grid-template-columns: 1fr; } .hero { padding: 2.5rem 0 3rem; } }

/* Screenshot frames */
.frame { margin: 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.frame-bar { display: flex; gap: 6px; padding: 9px 12px; background: var(--alt); border-bottom: 1px solid var(--line); }
.frame-bar span { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.frame figcaption { padding: .7rem 1rem .8rem; font-size: .9rem; color: var(--muted); border-top: 1px solid var(--line); }
.frame img { width: 100%; }
.hero .frame { border-color: rgba(255, 255, 255, .18); box-shadow: 0 20px 50px rgba(0, 0, 0, .35); }

/* Sections */
.section { padding: 4.5rem 0; }
.section.alt { background: var(--alt); }
.band { background: var(--surface); border-block: 1px solid var(--line); padding: 3rem 0; }
.band h2 { font-size: clamp(1.4rem, 2.6vw, 1.9rem); }
.note { color: var(--muted); font-size: .95rem; }
.small { font-size: .9rem; color: var(--muted); }
.callout { background: var(--warn-bg); color: var(--text); border-left: 4px solid var(--warn); padding: 1rem 1.2rem; border-radius: 8px; }

/* Steps */
.steps { list-style: none; counter-reset: s; margin: 2rem 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.steps li { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem; position: relative; }
.num { display: grid; place-items: center; width: 2.2rem; height: 2.2rem; border-radius: 50%; background: var(--blue); color: #fff; font: 600 1rem var(--mono); margin-bottom: 1rem; }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.2rem; margin-top: 2rem; }
.cards.three { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--line); border-top: 3px solid var(--blue); border-radius: var(--radius); padding: 1.4rem; }
.card p { color: var(--muted); margin: 0; font-size: 1rem; }
.tag { display: inline-block; vertical-align: middle; margin-left: .4rem; font: 600 .68rem var(--mono); letter-spacing: .1em; text-transform: uppercase; background: var(--warn-bg); color: var(--warn); border: 1px solid var(--warn); border-radius: 999px; padding: .1rem .55rem; }

/* Screens */
.shots { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; margin-top: 1.5rem; }

/* Limits */
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 2rem; }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.6rem; }
.panel.is { border-top: 4px solid #2E8B57; }
.panel.isnt { border-top: 4px solid #C4452B; }
.panel ul { margin: 0; padding-left: 1.2rem; }
.panel li { margin-bottom: .8rem; color: var(--muted); }
@media (max-width: 860px) { .two { grid-template-columns: 1fr; } }

/* Beta list */
.plain { padding-left: 1.3rem; }
.plain li { margin-bottom: .8rem; }

/* FAQ */
details { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 0 1.2rem; margin-bottom: .7rem; }
summary { cursor: pointer; padding: 1rem 0; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font: 500 1.3rem var(--mono); color: var(--blue); }
details[open] summary::after { content: "\2212"; }
details p { color: var(--muted); }

/* Footer */
.foot { background: var(--navy); color: var(--on-navy-muted); padding: 2.5rem 0; font-size: .95rem; }
.foot-in { display: grid; grid-template-columns: 1fr 2fr auto; gap: 2rem; align-items: start; }
.foot p { margin: 0 0 .3rem; }
.foot-brand { color: #fff; font-weight: 700; font-size: 1.1rem; }
.foot a { color: var(--on-navy); }
.fine { max-width: 42em; }
@media (max-width: 860px) { .foot-in { grid-template-columns: 1fr; gap: 1rem; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}