/*
 * Styles for the public site (prepforcall.com). Tokens and base rules are
 * copied from the mockups' "Focus" theme (mockups/assets/theme.css) so the
 * site and the app look the same; the rest is the blog layout and prose.
 * Fonts are self-hosted: no third-party requests.
 */

@font-face { font-family: "IBM Plex Sans"; font-weight: 400; font-display: swap; src: url(/fonts/ibm-plex-sans-latin-400-normal.woff2) format("woff2"); }
@font-face { font-family: "IBM Plex Sans"; font-weight: 600; font-display: swap; src: url(/fonts/ibm-plex-sans-latin-600-normal.woff2) format("woff2"); }
@font-face { font-family: "Schibsted Grotesk"; font-weight: 600; font-display: swap; src: url(/fonts/schibsted-grotesk-latin-600-normal.woff2) format("woff2"); }
@font-face { font-family: "IBM Plex Mono"; font-weight: 400; font-display: swap; src: url(/fonts/ibm-plex-mono-latin-400-normal.woff2) format("woff2"); }

/* ---- Tokens: light (default) ---- */
:root {
  --paper: #f6f7f9; --surface: #ffffff; --ink: #12151b; --muted: #5a6170;
  --line: #e1e4ea; --soft: #eef0f4; --onair: #c43530;
  --display: "Schibsted Grotesk", "Helvetica Neue", Arial, sans-serif;
  --body: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;
  color-scheme: light;
}
/* ---- Tokens: dark (system preference, unless light is forced) ---- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0f1115; --surface: #171a20; --ink: #eef0f4; --muted: #9aa1ad;
    --line: #2a2f38; --soft: #1e222a; --onair: #ff5a4f;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0f1115; --surface: #171a20; --ink: #eef0f4; --muted: #9aa1ad;
  --line: #2a2f38; --soft: #1e222a; --onair: #ff5a4f;
  color-scheme: dark;
}

/* ---- Base ---- */
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--paper); color: var(--ink); font: 16px/1.55 var(--body); padding: 0 16px 48px; min-height: 100vh; }
a { color: inherit; text-underline-offset: 3px; }
h1, h2, h3 { font-family: var(--display); letter-spacing: -0.02em; text-wrap: balance; margin: 0; font-weight: 600; }
h1 { font-size: clamp(28px, 4.2vw, 40px); line-height: 1.15; }
h2 { font-size: 22px; line-height: 1.25; }
h3 { font-size: 17px; line-height: 1.3; letter-spacing: -0.01em; }
p { margin: 0; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; border-radius: 6px; }
.wrap { max-width: 960px; margin: 0 auto; }
.narrow { max-width: 680px; margin-inline: auto; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.mono { font-family: var(--mono); }
.stack { display: grid; gap: 16px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 12px; background: var(--surface); padding: 8px 12px; border-radius: 8px; z-index: 10; }

/* ---- Header and footer ---- */
.appbar { max-width: 960px; margin: 0 auto; padding-block: 18px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { font: 600 17px/1 var(--display); letter-spacing: -0.02em; text-decoration: none; display: inline-flex; align-items: center; min-height: 24px; }
.brand b { color: var(--onair); font-weight: 600; }
.brand span { color: var(--muted); font-weight: 400; }
.appnav { display: flex; gap: 4px; }
.appnav a { text-decoration: none; padding: 6px 10px; border-radius: 8px; color: var(--muted); font-size: 14px; }
.appnav a:hover, .appnav a[aria-current="page"] { color: var(--ink); background: var(--soft); }
.theme { display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; margin-left: 4px; padding: 0; border: 0; border-radius: 8px; background: none; color: var(--muted); cursor: pointer; }
.theme[hidden] { display: none; }
.theme:hover { color: var(--ink); background: var(--soft); }
.theme:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.theme svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.theme .sun, :root[data-theme="dark"] .theme .moon { display: none; }
:root[data-theme="dark"] .theme .sun { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme .moon { display: none; }
  :root:not([data-theme="light"]) .theme .sun { display: block; }
}
.footer { max-width: 960px; margin: 64px auto 0; padding-top: 18px; border-top: 1px solid var(--line); display: flex; gap: 16px; flex-wrap: wrap; justify-content: space-between; color: var(--muted); font-size: 13px; }
.footer .flinks { display: flex; gap: 16px; flex-wrap: wrap; }
.footer a { color: var(--muted); display: inline-flex; align-items: center; min-height: 24px; }

/* ---- Home ---- */
.hero { padding-block: 56px 40px; display: grid; gap: 18px; }
.hero h1 { font-size: clamp(32px, 5.4vw, 54px); line-height: 1.1; letter-spacing: -0.03em; max-width: 18ch; }
.hero .pitch { font-size: 18px; color: var(--muted); max-width: 52ch; }
.eyebrow { font: 400 13px/1 var(--mono); text-transform: uppercase; letter-spacing: .1em; color: var(--muted); }
.linkish { color: var(--muted); font-size: 14px; display: inline-flex; min-height: 24px; align-items: center; }

/* ---- Post lists ---- */
.posts { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.posts li { display: grid; gap: 6px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.posts a { text-decoration: none; display: grid; gap: 4px; }
.posts .pt { font: 600 18px/1.3 var(--display); letter-spacing: -0.01em; }
.posts a:hover .pt { text-decoration: underline; }
.posts .pd { color: var(--muted); font-size: 15px; }
.wrap > h1 { margin-block: 32px 24px; }

/* ---- Article prose ---- */
.prose { padding-top: 24px; font-size: 17px; line-height: 1.7; }
.prose > * + * { margin-top: 18px; }
.prose h1 { margin-top: 10px; }
.prose h2 { margin-top: 40px; }
.prose h3 { margin-top: 28px; }
.prose ul, .prose ol { padding-left: 22px; }
.prose li + li { margin-top: 6px; }
.prose blockquote { margin-inline: 0; padding: 12px 16px; border-left: 3px solid var(--ink); background: var(--surface); border-radius: 0 8px 8px 0; }
.prose blockquote p + p { margin-top: 10px; }
.prose code { font-family: var(--mono); font-size: .9em; }
.prose table { border-collapse: collapse; width: 100%; font-size: 15px; display: block; overflow-x: auto; }
.prose th, .prose td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.related { margin-top: 48px; }
.prose li:has(> input[type="checkbox"]) { list-style: none; margin-left: -22px; }
.prose li > input[type="checkbox"] { margin-right: 8px; }
.prose .tldr { padding: 16px 18px; border: 1px solid var(--ink); border-radius: 12px; background: var(--surface); display: grid; gap: 8px; }
.prose .tldr p:last-child { font-size: 16px; line-height: 1.6; }
.prose .share { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 40px; }
.prose .share a { font-size: 14px; text-decoration: none; padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface); }
.prose .share a:hover { border-color: var(--muted); }
.prose .share + .cta { margin-top: 16px; }

/* ---- Blog index categories ---- */
.cats { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 8px; }
.cats a { font-size: 14px; text-decoration: none; padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface); }
.cats a:hover { border-color: var(--muted); }
.cat { margin-top: 40px; display: grid; gap: 10px; scroll-margin-top: 16px; }
/* Category header reads as a label, not a title: small mono caps over a heavy
   rule, so it can't be mistaken for a post. Posts sit in a card beneath it. */
.cat-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; border-top: 2px solid var(--ink); padding-top: 12px; }
.cat-head h2 { font: 400 13px/1.2 var(--mono); text-transform: uppercase; letter-spacing: .12em; color: var(--ink); }
.cat-head a { text-underline-offset: 3px; min-height: 24px; display: inline-flex; align-items: center; }
.cat-intro { color: var(--muted); font-size: 15px; max-width: 60ch; }
.posts.card { border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.posts.card li { padding: 16px 18px; }
.posts.card li:last-child { border-bottom: 0; }
.posts .pc { font: 400 12px/1.2 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }

/* ---- "Was this useful?" (no scripts: the thank-you shows via :target) ---- */
.prose .feedback { margin-top: 40px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.prose .feedback form { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 0; }
.prose .feedback form p { font-weight: 600; margin-right: 6px; }
.prose .feedback button { display: inline-flex; align-items: center; gap: 6px; font: inherit; font-size: 14px; color: var(--ink); background: var(--paper); border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; min-height: 36px; cursor: pointer; }
.prose .feedback button:hover { border-color: var(--muted); }
.prose .feedback svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.prose .fb-thanks { display: none; margin: 0; font-weight: 600; }
.prose .fb-thanks:target { display: block; }
.prose .feedback:has(.fb-thanks:target) form { display: none; }
.prose .feedback + .share { margin-top: 16px; }