/* converter.love — base: reset, typography, layout primitives, header, footer. */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: calc(var(--cv-header-h) + 16px); }
body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--cv-bg);
  color: var(--cv-text);
  font: 400 var(--cv-fs-16)/var(--cv-lh) var(--cv-font);
  font-feature-settings: "cv11", "calt";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-tap-highlight-color: transparent;
  overflow-x: clip;
}
main { flex: 1 0 auto; }
img, svg, video, canvas { display: block; max-width: 100%; }
svg { overflow: visible; }
button, input, select, textarea { font: inherit; color: inherit; letter-spacing: inherit; }
button { cursor: pointer; }
:disabled { cursor: not-allowed; }
[hidden] { display: none !important; }
::selection { background: var(--cv-selection); color: var(--cv-text); }

h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: var(--cv-tracking-tight); line-height: var(--cv-lh-tight); text-wrap: balance; }
h1 { font-size: var(--cv-fs-h1); letter-spacing: -0.032em; }
h2 { font-size: var(--cv-fs-h2); }
h3 { font-size: var(--cv-fs-18); letter-spacing: -0.012em; }
p { margin: 0; text-wrap: pretty; }
p + p { margin-top: var(--cv-s3); }
small, .cv-meta { font-size: var(--cv-fs-13); color: var(--cv-text-muted); }
code, kbd, .cv-ext { font-family: var(--cv-mono); font-size: .92em; }
.cv-ext { text-transform: uppercase; letter-spacing: .02em; font-weight: 500; }

a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: .2em; text-decoration-color: color-mix(in srgb, currentColor 35%, transparent); transition: text-decoration-color var(--cv-dur-1) var(--cv-ease), color var(--cv-dur-1) var(--cv-ease); }
a:hover { text-decoration-color: currentColor; }
.cv-prose a { color: var(--cv-accent-strong); }

/* Focus: one ring everywhere, offset grows in gently */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--cv-focus);
  outline-offset: 3px;
  border-radius: var(--cv-r-xs);
  transition: outline-offset var(--cv-dur-1) var(--cv-ease);
}

.cv-visually-hidden {
  position: absolute !important; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0;
}
.cv-skip {
  position: fixed; left: 12px; top: 12px; z-index: 100;
  padding: 10px 14px; border-radius: var(--cv-r-sm);
  background: var(--cv-cta); color: var(--cv-cta-ink); text-decoration: none;
  transform: translateY(-160%); transition: transform var(--cv-dur-2) var(--cv-ease);
}
.cv-skip:focus-visible { transform: none; }

/* Layout */
.cv-container { width: 100%; max-width: calc(var(--cv-container) + 2 * var(--cv-gutter)); margin-inline: auto; padding-inline: var(--cv-gutter); }
.cv-work { width: 100%; max-width: calc(var(--cv-work) + 2 * var(--cv-gutter)); margin-inline: auto; padding-inline: var(--cv-gutter); }
.cv-section { padding-block: clamp(48px, 7vw, 96px); }
.cv-section + .cv-section { border-top: 1px solid var(--cv-border); }
.cv-section-head { display: grid; gap: var(--cv-s2); margin-bottom: var(--cv-s8); max-width: 62ch; }
.cv-section-head p { color: var(--cv-text-muted); }

/* ───────── Header ───────── */
.cv-header {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--cv-bg) 88%, transparent);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--cv-dur-2) var(--cv-ease);
  padding-top: env(safe-area-inset-top, 0px);
}
.cv-header.is-scrolled { border-bottom-color: var(--cv-border); }
.cv-header-inner { height: var(--cv-header-h); display: flex; align-items: center; gap: var(--cv-s6); }

.cv-brand { display: inline-flex; align-items: center; gap: 10px; color: var(--cv-text); text-decoration: none; padding: 6px 4px; margin-left: -4px; border-radius: var(--cv-r-sm); }
.cv-brand .cv-mark { width: 30px; height: 30px; flex: none; }
.cv-brand .cv-wordmark { height: 23px; width: auto; }
@media (max-width: 380px) { .cv-brand .cv-wordmark { height: 19px; } .cv-brand .cv-mark { width: 26px; height: 26px; } }

.cv-nav { margin-left: auto; display: flex; align-items: center; gap: var(--cv-s1); }
.cv-nav a {
  display: inline-flex; align-items: center; min-height: 40px; padding: 0 12px;
  border-radius: var(--cv-r-sm); text-decoration: none; color: var(--cv-text-muted); font-weight: 500; font-size: var(--cv-fs-14);
  transition: color var(--cv-dur-1) var(--cv-ease), background-color var(--cv-dur-1) var(--cv-ease);
}
.cv-nav a:hover { color: var(--cv-text); background: var(--cv-surface-muted); }
.cv-nav a[aria-current="page"] { color: var(--cv-text); }

.cv-menu-btn {
  display: none; margin-left: auto; width: var(--cv-tap); height: var(--cv-tap);
  border: 0; border-radius: var(--cv-r-sm); background: transparent; place-items: center;
  transition: background-color var(--cv-dur-1) var(--cv-ease);
}
.cv-menu-btn:hover { background: var(--cv-surface-muted); }
.cv-menu-btn span { position: relative; width: 18px; height: 1.5px; background: currentColor; border-radius: 2px; transition: background-color var(--cv-dur-2) var(--cv-ease); }
.cv-menu-btn span::before, .cv-menu-btn span::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 1.5px; background: currentColor; border-radius: 2px;
  transition: transform var(--cv-dur-2) var(--cv-ease);
}
.cv-menu-btn span::before { transform: translateY(-6px); }
.cv-menu-btn span::after { transform: translateY(6px); }
.cv-menu-btn[aria-expanded="true"] span { background: transparent; }
.cv-menu-btn[aria-expanded="true"] span::before { transform: rotate(45deg); }
.cv-menu-btn[aria-expanded="true"] span::after { transform: rotate(-45deg); }

@media (max-width: 760px) {
  .cv-menu-btn { display: grid; }
  .cv-nav {
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 0;
    padding: 8px var(--cv-gutter) 16px; background: var(--cv-bg); border-bottom: 1px solid var(--cv-border);
    box-shadow: 0 24px 32px -24px rgba(32, 37, 46, .18);
    opacity: 0; transform: translateY(-6px); visibility: hidden;
    transition: opacity var(--cv-dur-2) var(--cv-ease), transform var(--cv-dur-2) var(--cv-ease), visibility 0s linear var(--cv-dur-2);
  }
  .cv-nav.is-open { opacity: 1; transform: none; visibility: visible; transition-delay: 0s; }
  .cv-nav a { min-height: 48px; font-size: var(--cv-fs-16); color: var(--cv-text); }
  .cv-nav a + a { border-top: 1px solid var(--cv-border); border-radius: 0; }
}

/* ───────── Footer ───────── */
.cv-footer { border-top: 1px solid var(--cv-border); padding-block: var(--cv-s10) calc(var(--cv-s10) + env(safe-area-inset-bottom, 0px)); color: var(--cv-text-muted); font-size: var(--cv-fs-14); }
.cv-footer-inner { display: grid; gap: var(--cv-s6); grid-template-columns: 1fr auto; align-items: start; }
.cv-footer .cv-brand .cv-wordmark { height: 18px; }
.cv-footer .cv-brand .cv-mark { width: 24px; height: 24px; }
.cv-footer-note { margin-top: var(--cv-s3); max-width: 46ch; }
.cv-footer-links { display: flex; flex-wrap: wrap; gap: var(--cv-s1) var(--cv-s5); list-style: none; margin: 0; padding: 0; }
.cv-footer-links a { display: inline-block; padding: 6px 0; text-decoration: none; }
.cv-footer-links a:hover { color: var(--cv-text); text-decoration: underline; }
@media (max-width: 640px) { .cv-footer-inner { grid-template-columns: 1fr; } }

/* file:// / no-JS notice */
.cv-runmode {
  margin: 0; padding: 12px var(--cv-gutter); background: var(--cv-warning-soft); color: var(--cv-warning);
  font-size: var(--cv-fs-14); border-bottom: 1px solid color-mix(in srgb, var(--cv-warning) 25%, transparent);
}
.cv-runmode code { background: rgba(255,255,255,.6); padding: 1px 6px; border-radius: 4px; color: var(--cv-text); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-iteration-count: 1 !important; scroll-behavior: auto !important; }
}