/* Layout: a sticky top bar, a two-column hero (pitch left, live tool right) that stacks on phones,
   then plain content sections in one reading column. */
:root {
  --bg: #e9eeec;
  --surface: #f8faf9;
  --ink: #13211f;
  --muted: #566663;
  --line: #cfd9d6;
  --accent: #0b7363;
  --accent-ink: #ffffff;
  --accent-soft: #d3e7e2;
  --warn: #b5470f;
  --danger: #a3262a;
  --font-display: "Familjen Grotesk", "Segoe UI", system-ui, sans-serif;
  --font-body: "Figtree", "Segoe UI", system-ui, sans-serif;
  --font-code: "Martian Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --max: 1120px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0c1413; --surface: #141f1d; --ink: #e2ebe8; --muted: #93a5a2; --line: #263532;
    --accent: #3fc6ae; --accent-ink: #062520; --accent-soft: #173a34; --warn: #f0894c; --danger: #f07a7d;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0c1413; --surface: #141f1d; --ink: #e2ebe8; --muted: #93a5a2; --line: #263532;
  --accent: #3fc6ae; --accent-ink: #062520; --accent-soft: #173a34; --warn: #f0894c; --danger: #f07a7d;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--font-body); font-size: 16px; line-height: 1.55;
}
img, svg { max-width: 100%; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
h1, h2, h3 { font-family: var(--font-display); line-height: 1.15; text-wrap: balance; margin: 0; }
p { margin: 0; }
code { font-family: var(--font-code); font-size: 0.85em; }

.container {
  max-width: var(--max); margin: 0 auto;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; z-index: 50; background: var(--surface); padding: 8px 12px; border-radius: 6px; }

/* Top bar */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.topbar .container { display: flex; align-items: center; gap: 20px; min-height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; color: var(--ink); text-decoration: none; }
.brand svg { width: 28px; height: 28px; }
.nav { display: flex; gap: 18px; margin-left: auto; }
.nav a { color: var(--muted); text-decoration: none; font-weight: 500; font-size: 0.95rem; }
.nav a:hover { color: var(--ink); }
.icon-btn { width: 36px; height: 36px; display: inline-grid; place-items: center; border-radius: 8px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); cursor: pointer; }
.icon-btn svg { width: 18px; height: 18px; }
.icon-btn .moon { display: none; }
:root[data-theme="dark"] .icon-btn .sun { display: none; }
:root[data-theme="dark"] .icon-btn .moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .icon-btn .sun { display: none; }
  :root:not([data-theme="light"]) .icon-btn .moon { display: block; }
}
@media (max-width: 640px) { .nav { display: none; } .icon-btn { margin-left: auto; } }

/* Hero + tool */
.hero { padding-block: 48px 56px; }
.hero .container { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 48px; align-items: start; }
.hero-copy { display: flex; flex-direction: column; gap: 18px; padding-top: 12px; }
.eyebrow { font-size: 0.78rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); }
.hero h1 { font-size: clamp(2.1rem, 4.6vw, 3.3rem); font-weight: 700; letter-spacing: -0.02em; }
.hero-copy .lede { font-size: 1.1rem; color: var(--muted); max-width: 44ch; }
.trust { list-style: none; padding: 0; margin: 6px 0 0; display: flex; flex-direction: column; gap: 8px; color: var(--ink); font-size: 0.95rem; }
.trust li { display: flex; gap: 10px; align-items: baseline; }
.trust li::before { content: ""; flex: none; width: 8px; height: 8px; border-radius: 2px; background: var(--accent); transform: translateY(-1px); }
@media (max-width: 880px) {
  .hero { padding-block: 28px 40px; }
  /* Phones: headline, then the tool, then the pitch, so the tool is above the fold. */
  .hero .container { display: flex; flex-direction: column; gap: 18px; }
  .hero-copy { display: contents; }
  .hero-copy .eyebrow, .hero h1 { order: 0; }
  .hero .tool { order: 1; margin-block: 6px 10px; }
  .hero-copy .lede, .hero .trust { order: 2; }
  .hero h1 { font-size: clamp(1.8rem, 8vw, 2.4rem); }
}

.tool { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 18px; display: flex; flex-direction: column; gap: 12px; box-shadow: 0 1px 0 var(--line), 0 12px 32px -20px rgba(10, 40, 35, 0.35); }
.panel.dragging { border-color: var(--accent); border-style: dashed; }
label.cap { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
textarea {
  width: 100%; min-height: 104px; resize: vertical; padding: 10px 12px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--bg); color: var(--ink);
  font-family: var(--font-code); font-size: 0.82rem; line-height: 1.6;
}
.hint { font-size: 0.84rem; color: var(--muted); }
.hint code { font-size: 0.76rem; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.spacer { flex: 1; }
.btn, .filebtn {
  font: 600 0.9rem var(--font-body); border-radius: 8px; padding: 8px 14px; cursor: pointer;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink); text-decoration: none;
  display: inline-flex; align-items: center; gap: 8px;
}
.btn:hover, .filebtn:hover { border-color: var(--accent); }
.btn.primary, .filebtn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.filebtn { position: relative; }
.filebtn input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.filebtn:focus-within { outline: 2px solid var(--accent); outline-offset: 2px; }
.check { display: inline-flex; gap: 6px; align-items: center; font-size: 0.86rem; color: var(--muted); cursor: pointer; }
.msg { font-size: 0.86rem; min-height: 1.3em; color: var(--muted); }
.msg.err { color: var(--danger); }
.msg.ok { color: var(--accent); }

.list { display: flex; flex-direction: column; gap: 10px; }
.empty { color: var(--muted); text-align: center; padding: 28px 12px; border: 1px dashed var(--line); border-radius: 12px; }
.code-card { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 4px 16px; align-items: center; }
.code-card .meta { min-width: 0; }
.code-card .name { font-weight: 600; overflow-wrap: anywhere; }
.code-card .sub { font-size: 0.76rem; color: var(--muted); font-family: var(--font-code); overflow-wrap: anywhere; }
.code-card .code {
  font-family: var(--font-code); font-weight: 600; font-size: clamp(1.7rem, 5vw, 2.3rem);
  letter-spacing: 0.06em; font-variant-numeric: tabular-nums; background: none; border: 0; padding: 0;
  color: var(--ink); text-align: left; cursor: pointer;
}
.code-card .code:hover { color: var(--accent); }
.code-card.expiring .code { color: var(--warn); }
.code-card .next { font-size: 0.76rem; color: var(--muted); font-family: var(--font-code); }
.timer { display: flex; align-items: center; gap: 10px; grid-row: span 2; }
.timer svg { width: 44px; height: 44px; transform: rotate(-90deg); }
.timer .track { stroke: var(--line); }
.timer .arc { stroke: var(--accent); transition: stroke-dashoffset 0.25s linear; }
.code-card.expiring .timer .arc { stroke: var(--warn); }
.timer .secs { font-family: var(--font-code); font-size: 0.8rem; width: 3ch; text-align: right; font-variant-numeric: tabular-nums; color: var(--muted); }
.actions { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.actions button { font: 600 0.8rem var(--font-body); padding: 5px 10px; border-radius: 6px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); cursor: pointer; }
.actions button:hover { border-color: var(--accent); }
.qrbox { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 16px; align-items: center; margin-top: 8px; }
.qrbox .qr { background: #ffffff; padding: 10px; border-radius: 8px; width: 180px; max-width: 100%; }
.qrbox .qr svg { display: block; width: 100%; height: auto; }
.qrbox .uri { flex: 1; min-width: 0; font-family: var(--font-code); font-size: 0.72rem; color: var(--muted); overflow-wrap: anywhere; }
.err-card { border-color: var(--danger); }
.err-card .name { color: var(--danger); }
.badge { display: inline-block; font-size: 0.68rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; padding: 1px 6px; border-radius: 4px; border: 1px solid var(--line); color: var(--muted); margin-left: 6px; vertical-align: 2px; }
@media (max-width: 460px) {
  .code-card { grid-template-columns: 1fr; }
  .timer { grid-row: auto; }
}

/* Content sections */
.section { padding-block: 64px; border-top: 1px solid var(--line); }
.section h2 { font-size: clamp(1.6rem, 3vw, 2.1rem); letter-spacing: -0.01em; }
.section-head { display: flex; flex-direction: column; gap: 10px; margin-bottom: 32px; max-width: 62ch; }
.section-head p { color: var(--muted); }

.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; counter-reset: step; }
.steps li { display: flex; flex-direction: column; gap: 8px; counter-increment: step; }
.steps li::before {
  content: counter(step); font-family: var(--font-code); font-weight: 600; font-size: 0.85rem;
  width: 32px; height: 32px; display: grid; place-items: center; border-radius: 8px;
  background: var(--accent-soft); color: var(--accent);
}
.steps h3, .features h3 { font-size: 1.12rem; }
.steps p, .features p { color: var(--muted); }

.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.features > div { background: var(--surface); padding: 24px; display: flex; flex-direction: column; gap: 8px; }
@media (max-width: 860px) {
  .steps { grid-template-columns: 1fr; gap: 22px; }
  .features { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) { .features { grid-template-columns: 1fr; } }

.formats { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 32px; align-items: start; }
.formats pre {
  margin: 0; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px;
  font-family: var(--font-code); font-size: 0.8rem; line-height: 1.8; overflow-x: auto; color: var(--ink);
}
.formats dl { margin: 0; display: grid; gap: 14px; }
.formats dt { font-weight: 600; }
.formats dd { margin: 2px 0 0; color: var(--muted); }
@media (max-width: 760px) { .formats { grid-template-columns: 1fr; } }

.faq { display: flex; flex-direction: column; max-width: 780px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq details:first-child { border-top: 1px solid var(--line); }
.faq summary { cursor: pointer; padding: 18px 32px 18px 0; font-weight: 600; font-size: 1.04rem; list-style: none; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 14px; font-family: var(--font-code); font-size: 1.2rem; color: var(--accent); }
.faq details[open] summary::after { content: "−"; }
.faq details p { padding-bottom: 18px; color: var(--muted); max-width: 68ch; }

/* Prose pages */
.prose { max-width: 70ch; padding-block: 48px 72px; display: flex; flex-direction: column; gap: 16px; }
.prose h1 { font-size: clamp(2rem, 4vw, 2.6rem); }
.prose h2 { font-size: 1.3rem; margin-top: 16px; }
.prose p, .prose li { color: var(--ink); }
.prose .muted { color: var(--muted); }
.prose ul { margin: 0; padding-left: 1.2em; display: flex; flex-direction: column; gap: 6px; }

/* Footer */
.footer { border-top: 1px solid var(--line); padding-block: 28px calc(28px + env(safe-area-inset-bottom, 0px)); color: var(--muted); font-size: 0.88rem; }
.footer .container { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; }
.footer nav { display: flex; gap: 18px; margin-left: auto; flex-wrap: wrap; }
.footer a { color: var(--muted); }

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