/* Twalkin — house style, its own layout.
   Plain CSS, one self-hosted font, no framework, no external requests. */

@font-face {
  font-family: "Manrope";
  src: url("fonts/Manrope-VariableFont_wght.ttf") format("truetype");
  font-weight: 200 800;
  font-display: swap;
}

:root {
  color-scheme: light dark;
  --bg: #ffffff;  --fg: #09090b;
  --panel: #ffffff;  --panel-border: rgba(24, 24, 40, 0.10);
  --border: #e4e4e7;  --muted: #f4f4f5;  --muted-fg: #71717a;
  --shadow-panel: 0 1px 2px rgba(24,24,40,.05), 0 8px 24px -16px rgba(24,24,40,.18);

  --accent: #fbc711;  --accent-hover: #ddaf0f;  --on-accent: #645007;
  --accent-container: #fff8e2;  --on-accent-container: #5f4c06;

  --brand-navy: #111827;
  --link: #1b74bc;
  --success: #38813a;
  --warning: #8f6c03;

  --radius: 0.875rem;
  --panel-radius: 1.375rem;
  --wrap: 68rem;

  /* The session-check panel keeps the brand navy in BOTH themes, the same
     way the tray icon does — it is identity, not a surface, so it does not
     follow light/dark. These are its own tokens so components below carry
     no raw colour. */
  --check-bg: var(--brand-navy);
  --check-fg: #fafafa;
  --check-dim: #d4d4d8;
  --check-label: #a1a1aa;
  --check-line: rgba(255,255,255,.06);
  --check-edge: rgba(255,255,255,.09);
  --yes-bg: #4bae4f;  --on-yes: #0d1f0e;
  --no-bg: #9e9d9e;   --on-no: #1a1a1a;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #09090b;  --fg: #fafafa;
    --panel: #1b1d29;  --panel-border: rgba(255,255,255,.09);
    --border: #27272a;  --muted: #1c1c1f;  --muted-fg: #a1a1aa;
    --shadow-panel: 0 1px 2px rgba(0,0,0,.35), 0 8px 24px -16px rgba(0,0,0,.6);
    --accent-container: #4b3c05;  --on-accent-container: #fde694;
    --link: #2295f1;
    --success: #4bae4f;
    --warning: #ffc006;
  }
}

:root[data-theme="dark"] {
  --bg: #09090b;  --fg: #fafafa;
  --panel: #1b1d29;  --panel-border: rgba(255,255,255,.09);
  --border: #27272a;  --muted: #1c1c1f;  --muted-fg: #a1a1aa;
  --shadow-panel: 0 1px 2px rgba(0,0,0,.35), 0 8px 24px -16px rgba(0,0,0,.6);
  --accent-container: #4b3c05;  --on-accent-container: #fde694;
  --link: #2295f1;
  --success: #4bae4f;
  --warning: #ffc006;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Manrope", system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap { width: min(100% - 2.5rem, var(--wrap)); margin-inline: auto; }

a { color: var(--link); }
a:focus-visible, button:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.skip {
  position: absolute; left: -9999px;
  background: var(--panel); color: var(--fg);
  padding: .75rem 1rem; border-radius: var(--radius); z-index: 10;
}
.skip:focus { left: 1rem; top: 1rem; }

h1, h2, h3 { line-height: 1.2; margin: 0 0 .5rem; }
h1 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 700; letter-spacing: -.02em; }
h2 { font-size: 1.75rem; font-weight: 600; letter-spacing: -.01em; }
h3 { font-size: 1.0625rem; font-weight: 600; }
p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }

/* ---- nav ---------------------------------------------------------- */

.topnav {
  position: sticky; top: 0; z-index: 5;
  background: var(--bg);
  border-bottom: 1px solid var(--panel-border);
}
.topnav-inner { display: flex; align-items: center; gap: 1rem; padding: .75rem 0; }
.brand {
  display: inline-flex; align-items: center; gap: .5rem;
  font-weight: 700; color: var(--fg); text-decoration: none;
  letter-spacing: -.01em;
}
.nav-links { margin-left: auto; display: flex; align-items: center; gap: 1.25rem; }
.nav-links a { color: var(--muted-fg); text-decoration: none; font-size: .9375rem; font-weight: 600; }
.nav-links a:hover { color: var(--fg); }
@media (max-width: 40rem) { .nav-links .hide-sm { display: none; } }

/* ---- buttons ------------------------------------------------------ */

.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  border-radius: var(--radius);
  padding: .7rem 1.15rem;
  font: inherit; font-weight: 600;
  text-decoration: none; cursor: pointer;
  border: 1px solid transparent;
}
.btn.primary { background: var(--accent); color: var(--on-accent); }
.btn.primary:hover { background: var(--accent-hover); }
.btn.ghost { background: var(--muted); color: var(--fg); border-color: var(--border); }
.btn.ghost:hover { border-color: var(--muted-fg); }

/* ---- hero --------------------------------------------------------- */
/* Uneven on purpose: the promise carries the weight, and the session
   check sits beside it as the one thing to verify before downloading. */

.hero { padding: 3.5rem 0 2rem; }
.hero-grid {
  display: grid; gap: 2rem;
  grid-template-columns: 1.35fr 1fr;
  align-items: center;
}
@media (max-width: 60rem) { .hero-grid { grid-template-columns: 1fr; } }

.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  background: var(--accent-container); color: var(--on-accent-container);
  border-radius: 999px; padding: .3rem .75rem;
  font-size: .8125rem; font-weight: 700;
  letter-spacing: .03em; text-transform: uppercase;
  margin-bottom: 1rem;
}
.lede { font-size: 1.125rem; color: var(--muted-fg); max-width: 46ch; }
.hero-cta { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.5rem; }
.hero-note { margin-top: 1rem; font-size: .8125rem; color: var(--muted-fg); }

/* The session check: a terminal, because that is literally how you check. */
.check {
  background: var(--check-bg);
  border: 1px solid var(--check-edge);
  border-radius: var(--panel-radius);
  box-shadow: var(--shadow-panel);
  padding: 1.25rem;
  color: var(--check-fg);
}
.check-title {
  font-size: .8125rem; font-weight: 700; letter-spacing: .04em;
  text-transform: uppercase; color: var(--check-label); margin-bottom: .75rem;
}
.check pre {
  margin: 0 0 .75rem; padding: .85rem 1rem;
  background: var(--check-line);
  border-radius: var(--radius);
  font-size: .9375rem; overflow-x: auto;
}
.check code { font-family: ui-monospace, Menlo, Consolas, monospace; }
.check .prompt { color: var(--accent); }
.check-row { display: flex; align-items: flex-start; gap: .6rem; font-size: .9375rem; padding: .3rem 0; }
.check-row .tag {
  flex: none; font-weight: 700; border-radius: 999px;
  padding: .05rem .5rem; font-size: .75rem;
}
.tag.yes { background: var(--yes-bg); color: var(--on-yes); }
.tag.no  { background: var(--no-bg); color: var(--on-no); }
.check-row span { color: var(--check-dim); }
.check-row a { color: var(--accent); }

/* ---- flow --------------------------------------------------------- */

.flow-track { display: grid; gap: 1.25rem; grid-template-columns: repeat(3, 1fr); }
@media (max-width: 48rem) { .flow-track { grid-template-columns: 1fr; } }
.flow-step { border-left: 3px solid var(--accent); padding: .1rem 0 .1rem 1rem; }
.flow-step h3 { margin-bottom: .25rem; }
.flow-step p { color: var(--muted-fg); font-size: .9375rem; }

/* ---- panels / bento ------------------------------------------------ */

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--panel-radius);
  box-shadow: var(--shadow-panel);
  padding: 1.5rem;
}
section { padding: 2.5rem 0; }
.section-intro { color: var(--muted-fg); max-width: 60ch; margin-bottom: 1.5rem; }

.bento { display: grid; gap: 1rem; grid-template-columns: 2fr 1fr; }
@media (max-width: 56rem) { .bento { grid-template-columns: 1fr; } }
.bento h3 { display: flex; align-items: center; gap: .5rem; }
.bento p { color: var(--muted-fg); font-size: .9375rem; }
.icon { flex: none; color: var(--accent); }

/* ---- differences --------------------------------------------------- */

.diff { display: grid; gap: 1rem; grid-template-columns: 1fr 1fr; }
@media (max-width: 48rem) { .diff { grid-template-columns: 1fr; } }
.diff .panel { border-left: 3px solid var(--warning); }
.diff h3 { margin-bottom: .35rem; }
.diff p { color: var(--muted-fg); font-size: .9375rem; }

/* ---- requirements -------------------------------------------------- */

.req ul { margin: .75rem 0 0; padding-left: 1.1rem; color: var(--muted-fg); }
.req li { margin-bottom: .35rem; }
.req pre {
  background: var(--muted); border: 1px solid var(--border);
  border-radius: var(--radius); padding: .8rem 1rem; overflow-x: auto;
  font-size: .9375rem; margin: .75rem 0;
}
.req code { font-family: ui-monospace, Menlo, Consolas, monospace; }

/* ---- download ------------------------------------------------------ */

.download .panel { display: grid; gap: 1rem; }
.dl-row { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; }
.dl-meta { color: var(--muted-fg); font-size: .875rem; }
.dl-help { color: var(--muted-fg); font-size: .9375rem; }

/* ---- footer -------------------------------------------------------- */

.foot {
  border-top: 1px solid var(--panel-border);
  padding: 2rem 0 3rem;
  color: var(--muted-fg); font-size: .875rem;
}
.foot-inner { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }
.foot-links { margin-left: auto; display: flex; gap: 1.25rem; flex-wrap: wrap; }
.badge img { display: block; height: 34px; width: auto; }
.badge .dark-only { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .badge .light-only { display: none; }
  :root:not([data-theme="light"]) .badge .dark-only { display: block; }
}
:root[data-theme="dark"] .badge .light-only { display: none; }
:root[data-theme="dark"] .badge .dark-only { display: block; }