/* PDF Diva landing — light by default, dark via system or forced with [data-theme]. */

:root {
  --bg: #FBFAF8;
  --surface: #F4F2EF;
  --surface-2: #EBE8E4;
  --line: #DDD9D3;
  --text: #1F1D1B;
  --muted: #645F59;
  --accent: #C2185B;
  --accent-hover: #A5134B;
  --on-accent: #FFFFFF;
  --accent-soft: #F9E8EF;
  --shot-shadow: 0 30px 70px rgb(31 29 27 / 0.18);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1D1C1B;
    --surface: #242321;
    --surface-2: #2E2C2A;
    --line: #3C3A37;
    --text: #ECE9E5;
    --muted: #A8A39C;
    --accent: #E8BA30;
    --accent-hover: #F2CB5C;
    --on-accent: #1A1206;
    --accent-soft: #3E351E;
    --shot-shadow: 0 30px 80px rgb(0 0 0 / 0.55);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #1D1C1B;
  --surface: #242321;
  --surface-2: #2E2C2A;
  --line: #3C3A37;
  --text: #ECE9E5;
  --muted: #A8A39C;
  --accent: #E8BA30;
  --accent-hover: #F2CB5C;
  --on-accent: #1A1206;
  --accent-soft: #3E351E;
  --shot-shadow: 0 30px 80px rgb(0 0 0 / 0.55);
  color-scheme: dark;
}

/* Base */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  transition: background-color .3s, color .3s;
}
a { color: var(--accent); }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; height: auto; }
h1, h2, h3 { margin: 0; }
p { margin: 0; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.wrap { max-width: 1120px; margin: 0 auto; padding-inline: 24px; }
.center { text-align: center; display: flex; flex-direction: column; align-items: center; gap: 18px; }
.stack { display: flex; flex-direction: column; gap: 48px; }

/* Header */
.site-header { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; padding-block: 14px;
  position: sticky; top: 0; z-index: 10;
  /* Full-width background behind the centred content, so the page content scrolls out of sight under the bar. */
  background: var(--bg); box-shadow: 0 0 0 100vmax var(--bg); clip-path: inset(0 -100vmax); }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 600; font-size: 17px; }
.brand:hover { color: var(--text); }
.brand img {border-radius: 5px;}
.nav { display: flex; flex-wrap: wrap; align-items: center; gap: 20px; font-size: 15px; }
.nav > a { color: var(--muted); text-decoration: none; }
.nav > a:hover { color: var(--text); }
/* The anchor links are a convenience; drop them on narrow screens so the bar stays on one line. */
@media (max-width: 640px) { .nav-anchor { display: none; } }
.btn-github {
  display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 8px 14px;
  border: 1px solid var(--line); border-radius: 8px; color: var(--text) !important; text-decoration: none;
}

/* Theme switch */
.theme-switch { display: inline-flex; gap: 2px; padding: 3px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); }
.theme-switch button {
  display: inline-grid; place-items: center; width: 40px; height: 36px; border: 0; border-radius: 7px;
  background: transparent; color: var(--muted); cursor: pointer;
}
.theme-switch button:hover { color: var(--text); }
.theme-switch button[aria-pressed="true"] { background: var(--accent-soft); color: var(--accent); }
/* The same switch with words, under the screenshot. */
.theme-switch.with-labels button { width: auto; height: 40px; padding-inline: 18px; font: inherit; font-size: 15px; font-weight: 600; }

/* Hero */
.hero { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 20px; padding-top: 72px; padding-bottom: 40px; }
.hero-icon { width: 136px; height: 136px; }
.hero h1 {
  margin-top: 8px;
  font-family: "Segoe UI Variable Display", "Segoe UI", system-ui, sans-serif;
  font-size: clamp(44px, 7vw, 76px); line-height: 1.02; font-weight: 700; letter-spacing: -0.02em;
}
.claim { font-size: clamp(22px, 3vw, 30px); line-height: 1.25; font-weight: 600; }
.lede { max-width: 640px; color: var(--muted); font-size: 18px; }
.meta { font-size: 14px; color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 12px; }

.btn {
  display: inline-flex; align-items: center; gap: 10px; min-height: 52px; padding: 14px 22px;
  /* Same corners as the Microsoft Store badge next to it (4.6 units at 1.25×). */
  border-radius: 6px; font-weight: 600; text-decoration: none;
}
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-hover); color: var(--on-accent); }
.btn-secondary { background: var(--surface); color: var(--text); border: 1px solid var(--line); }
.btn-secondary:hover { background: var(--surface-2); color: var(--text); }
/* Official Microsoft Store badge (light or dark version, following the page theme), as tall as the buttons. */
.store-badge { display: inline-flex; border-radius: 6px; }
.store-badge img { height: 55px; width: auto; }
.store-badge:hover { filter: brightness(0.96); }

/* Screenshot: one image per theme */
.shot { padding-top: 24px; padding-bottom: 96px; }
.shot img { display: block; width: 100%; border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shot-shadow); }
.shot-themes { display: flex; justify-content: center; margin-top: 28px; }
.only-dark { display: none !important; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .only-dark { display: block !important; }
  :root:not([data-theme="light"]) .only-light { display: none !important; }
}
:root[data-theme="dark"] .only-dark { display: block !important; }
:root[data-theme="dark"] .only-light { display: none !important; }

/* Sections */
.band { background: var(--surface); border-top: 1px solid var(--line); padding-block: 88px; }
.section-head { display: flex; flex-direction: column; gap: 12px; max-width: 640px; }
.section-head h2, .closing h2, .problem h2 { text-wrap: balance; }
.section-head h2, .closing h2 { font-size: clamp(30px, 4vw, 40px); line-height: 1.15; font-weight: 700; }
.section-head p, .closing p { color: var(--muted); font-size: 18px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.card { background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 24px; display: flex; flex-direction: column; gap: 10px; }
.card-icon { color: var(--accent); }
.card h3 { font-size: 19px; font-weight: 600; }
.card p { color: var(--muted); }

/* The problem: centred text on the band. */
.problem h2 { max-width: 760px; font-size: clamp(30px, 4vw, 40px); line-height: 1.15; font-weight: 700; }
.problem p { max-width: 680px; color: var(--muted); font-size: 18px; }

/* The plan: three numbered steps. */
.plan { padding-block: 88px; }
.steps { list-style: none; margin: 0; padding: 0; counter-reset: step;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.steps li { counter-increment: step; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 24px;
  display: flex; flex-direction: column; gap: 10px; }
.steps li::before { content: counter(step); display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%;
  background: var(--accent); color: var(--on-accent); font-weight: 700; font-size: 18px; }
.steps h3 { font-size: 19px; font-weight: 600; }
.steps p { color: var(--muted); }
.promise { color: var(--muted); font-size: 16px; }

.split { display: flex; flex-wrap: wrap; gap: 48px; align-items: flex-start; padding-block: 88px; }
.split .section-head { flex: 1 1 300px; }
.table-box { flex: 2 1 480px; min-width: 0; overflow-x: auto; }
.keys { width: 100%; border-collapse: collapse; }
.keys tr { border-bottom: 1px solid var(--line); }
.keys tr:last-child { border-bottom: 0; }
.keys th { padding: 14px 0; text-align: left; font-weight: 400; color: var(--muted); }
.keys td { padding: 14px 0; text-align: right; white-space: nowrap; }
kbd {
  font-family: inherit; font-size: 14px; padding: 4px 10px;
  border: 1px solid var(--line); border-bottom-width: 3px; border-radius: 6px; background: var(--surface);
}

.closing { border-top: 1px solid var(--line); padding-block: 80px; }
.closing h2 { font-size: clamp(28px, 3.6vw, 36px); }

.site-footer { border-top: 1px solid var(--line); }
.footer-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; padding-block: 28px; font-size: 14px; color: var(--muted); }
.footer-links { display: flex; gap: 20px; }

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

/* Long-form pages (privacy policy) */
.prose { max-width: 720px; padding-block: 48px 72px; }
.prose h1 { font-size: clamp(32px, 5vw, 44px); line-height: 1.15; margin-bottom: 8px; }
.prose h2 { font-size: 24px; margin: 40px 0 8px; }
.prose p, .prose li { color: var(--muted); font-size: 17px; line-height: 1.6; }
.prose p { margin: 0 0 16px; }
.prose ul { margin: 0 0 16px; padding-left: 22px; }
.prose a { color: var(--accent); }