/* FleetProfit content pages (guides, calculators). Same palette and type as the app,
   tuned for long reading: wider line height, a 68ch measure, worked examples in mono. */
:root {
  --bg: #0d0f12; --surface: #15181d; --surface-2: #1b1f26; --line: #2a3039;
  --fg: #f1f3f6; --fg-muted: #98a1ae; --fg-dim: #6a7380;
  --gold: #c9a227; --gold-bright: #e3bb3c; --gold-soft: rgba(201,162,39,.13); --gold-line: rgba(201,162,39,.35);
  --pos: #41b97b; --neg: #e4594d; --warn-soft: rgba(217,164,65,.12);
  --sans: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f3ef; --surface: #ffffff; --surface-2: #efede7; --line: #d9d5cb;
    --fg: #16191e; --fg-muted: #5b6472; --fg-dim: #808a98;
    --gold: #8a6a0f; --gold-bright: #6f5509; --gold-soft: rgba(138,106,15,.1); --gold-line: rgba(138,106,15,.3);
    --pos: #1c7d4d; --neg: #b23a2e; --warn-soft: rgba(138,100,16,.12);
    color-scheme: light;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.7 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: var(--gold-bright); text-underline-offset: 2px; }
:focus-visible { outline: 2px solid var(--gold-bright); outline-offset: 2px; border-radius: 3px; }

/* header */
.site-head { border-bottom: 1px solid var(--line); background: var(--surface); }
.site-head .wrap { display: flex; align-items: center; gap: 20px; min-height: 56px; }
.brand { display: flex; align-items: center; gap: 9px; color: var(--fg); text-decoration: none; font-weight: 700; letter-spacing: -.01em; }
.brand-mark { width: 26px; height: 26px; border-radius: 7px; background: var(--gold); display: grid; place-items: center; }
.brand-mark svg { width: 17px; height: 17px; }
.brand em { font-style: normal; color: var(--gold-bright); }
.site-nav { margin-left: auto; display: flex; gap: 18px; font-size: 14px; }
.site-nav a { color: var(--fg-muted); text-decoration: none; }
.site-nav a:hover, .site-nav a[aria-current] { color: var(--fg); }
.site-nav .cta { color: #17140a; background: var(--gold); padding: 5px 12px; border-radius: 6px; font-weight: 600; }
.site-nav .cta:hover { color: #17140a; background: var(--gold-bright); }

.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }

/* article */
.crumbs { font-size: 13px; color: var(--fg-dim); margin: 28px 0 0; }
.crumbs a { color: var(--fg-muted); text-decoration: none; }
article h1 { font-size: clamp(28px, 5vw, 38px); line-height: 1.15; letter-spacing: -.02em; margin: 10px 0 12px; text-wrap: balance; }
.lede { font-size: 18px; color: var(--fg-muted); margin: 0 0 14px; }
.byline { font-size: 13px; color: var(--fg-dim); padding-bottom: 22px; border-bottom: 1px solid var(--line); margin-bottom: 8px; }
article h2 { font-size: 23px; line-height: 1.25; letter-spacing: -.015em; margin: 40px 0 10px; }
article h3 { font-size: 18px; margin: 28px 0 6px; }
article p, article ul, article ol { margin: 0 0 16px; max-width: 68ch; }
article li { margin-bottom: 6px; }
article strong { color: var(--fg); }

.summary { background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--gold); border-radius: 8px; padding: 16px 18px; margin: 24px 0; }
.summary h2 { font-size: 14px; text-transform: uppercase; letter-spacing: .06em; color: var(--gold-bright); margin: 0 0 8px; }
.summary ul { margin: 0; padding-left: 20px; }

/* worked example: a ledger, numbers right-aligned in mono */
.worked { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; margin: 22px 0; overflow-x: auto; }
.worked .cap { font-size: 13px; font-weight: 600; color: var(--fg-muted); padding: 12px 16px; border-bottom: 1px solid var(--line); }
.worked table { width: 100%; border-collapse: collapse; font-size: 15px; }
.worked td { padding: 8px 16px; border-bottom: 1px solid var(--line); }
.worked td:last-child { font-family: var(--mono); font-variant-numeric: tabular-nums; text-align: right; white-space: nowrap; }
.worked tr.total td { font-weight: 700; border-bottom: 0; background: var(--gold-soft); }
.worked .neg { color: var(--neg); } .worked .pos { color: var(--pos); }
.formula { font-family: var(--mono); font-size: 15px; background: var(--surface-2); border-radius: 6px; padding: 12px 14px; margin: 16px 0; overflow-wrap: anywhere; }

.note { background: var(--warn-soft); border-radius: 8px; padding: 12px 16px; margin: 20px 0; font-size: 15px; }

/* the bridge from reading to doing */
.try { background: var(--gold-soft); border: 1px solid var(--gold-line); border-radius: 10px; padding: 20px; margin: 36px 0; }
.try h2 { margin: 0 0 6px; font-size: 20px; }
.try p { color: var(--fg-muted); margin: 0 0 14px; }
.btn { display: inline-block; background: var(--gold); color: #17140a; font-weight: 600; text-decoration: none; padding: 10px 18px; border-radius: 7px; }
.btn:hover { background: var(--gold-bright); }

table.data { width: 100%; border-collapse: collapse; margin: 16px 0 22px; font-size: 15px; }
table.data th, table.data td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.data th { font-size: 13px; color: var(--fg-muted); font-weight: 600; }

.faq h3 { margin-top: 22px; }
.related { border-top: 1px solid var(--line); margin-top: 40px; padding-top: 20px; }
.related h2 { font-size: 16px; margin: 0 0 8px; }
.related ul { padding-left: 20px; }

/* guides index */
.cards { list-style: none; padding: 0; margin: 24px 0; display: grid; gap: 12px; }
.cards a { display: block; text-decoration: none; color: var(--fg); background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; }
.cards a:hover { border-color: var(--gold-line); }
.cards strong { display: block; font-size: 17px; margin-bottom: 4px; }
.cards span { color: var(--fg-muted); font-size: 14px; }

.site-foot { border-top: 1px solid var(--line); margin-top: 56px; padding: 20px 0 40px; font-size: 13px; color: var(--fg-dim); }
.site-foot a { color: var(--fg-muted); }

@media (max-width: 560px) {
  .site-nav { gap: 12px; font-size: 13px; }
  .site-nav .hide-sm { display: none; }
  .lede { font-size: 17px; }
}

/* Ad slots on guide pages: hidden until config.js enables AdSense (assets/ads.js).
   Reserved height stops the article jumping when an ad loads. */
.ad-slot { margin: 32px 0; min-height: 120px; }
.ad-slot::before { content: "Advertisement"; display: block; font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--fg-dim); margin-bottom: 6px; }