/* Showdown landing page. Minimal, bordered, dark first, light on request. */

:root {
  --bg: hsl(0 0% 100%);
  --bg-alt: hsl(0 0% 98.4%);
  --surface: hsl(0 0% 100%);
  --surface-2: hsl(0 0% 97%);
  --border: hsl(0 0% 91%);
  --border-strong: hsl(0 0% 84%);
  --grid-line: hsl(0 0% 93%);
  --fg: hsl(0 0% 8%);
  --fg-muted: hsl(0 0% 40%);
  --fg-subtle: hsl(0 0% 54%);
  --accent: hsl(152 62% 30%);
  --accent-soft: hsl(152 62% 30% / 0.1);
  --warn: hsl(32 85% 38%);
  --warn-soft: hsl(32 85% 38% / 0.1);
  --radius: 10px;
  --radius-lg: 16px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: hsl(0 0% 6.5%);
  --bg-alt: hsl(0 0% 8.6%);
  --surface: hsl(0 0% 9.8%);
  --surface-2: hsl(0 0% 12.5%);
  --border: hsl(0 0% 17%);
  --border-strong: hsl(0 0% 24%);
  --grid-line: hsl(0 0% 14%);
  --fg: hsl(0 0% 96%);
  --fg-muted: hsl(0 0% 64%);
  --fg-subtle: hsl(0 0% 50%);
  --accent: hsl(152 60% 56%);
  --accent-soft: hsl(152 60% 56% / 0.12);
  --warn: hsl(38 90% 62%);
  --warn-soft: hsl(38 90% 62% / 0.12);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html {
  scroll-behavior: smooth; scroll-padding-top: 5rem;
  -webkit-text-size-adjust: 100%; text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { margin: 0; letter-spacing: -0.025em; line-height: 1.15; font-weight: 600; }
h1 { font-size: clamp(2.25rem, 5.2vw, 3.75rem); letter-spacing: -0.035em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); letter-spacing: -0.03em; }
h3 { font-size: 1rem; }
h4 { font-size: 0.95rem; }
p { margin: 0; }
a { color: inherit; }
ul, ol { margin: 0; }

code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 0.1em 0.38em;
  border-radius: 5px;
}
pre code { background: none; border: 0; padding: 0; font-size: 0.8125rem; }
img { max-width: 100%; height: auto; display: block; }

.muted { color: var(--fg-muted); }
.nowrap { white-space: nowrap; }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--fg); color: var(--bg);
  padding: 0.5rem 1rem; border-radius: var(--radius);
}
.skip-link:focus { left: 1rem; top: 1rem; }

.container { width: min(1140px, 100% - 2.5rem); margin-inline: auto; }
.container.narrow { max-width: 760px; }

/* ---- Eyebrow ---------------------------------------------------------- */
.eyebrow {
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

/* ---- Header ----------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex; align-items: center; gap: 2rem;
  height: 60px;
}
.brand {
  display: flex; align-items: center; gap: 0.55rem;
  font-weight: 600; font-size: 1rem; letter-spacing: -0.02em;
  text-decoration: none; flex: none;
}
/* The mark is transparent, so each theme gets the artwork that reads on it:
   black suits with a white keyline on light, white suits with the page showing
   through between them on dark. Both keep the red heart and diamond. */
.brand-mark {
  flex: none; width: 64px; height: 25px;
  background: url("logo-light.png") center / contain no-repeat;
}
:root[data-theme="dark"] .brand-mark { background-image: url("logo-dark.png"); }
.nav { display: flex; gap: 1.5rem; }
.nav a {
  text-decoration: none; color: var(--fg-muted);
  font-size: 0.875rem; transition: color 0.15s;
}
.nav a:hover { color: var(--fg); }
.header-actions { display: flex; align-items: center; gap: 0.5rem; flex: none; margin-left: auto; }

/* ---- Buttons ---------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  min-height: 2.25rem; padding: 0.5rem 0.95rem;
  font: inherit; font-size: 0.875rem; font-weight: 500; line-height: 1.2;
  text-align: center;
  border-radius: 7px; border: 1px solid transparent;
  cursor: pointer; text-decoration: none; white-space: nowrap;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn-primary { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.btn-primary:hover { background: color-mix(in srgb, var(--fg) 86%, var(--bg)); }
.btn-outline { background: var(--surface); border-color: var(--border-strong); color: var(--fg); }
.btn-outline:hover { background: var(--surface-2); }
.btn-ghost { background: transparent; color: var(--fg-muted); }
.btn-ghost:hover { background: var(--surface-2); color: var(--fg); }
.btn-icon { width: 2.25rem; min-width: 2.25rem; padding: 0; }
.btn-lg { min-height: 2.6rem; padding: 0.6rem 1.25rem; font-size: 0.9rem; }

#theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] #theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] #theme-toggle .icon-moon { display: block; }

/* ---- Pills ------------------------------------------------------------ */
.pill {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.25rem 0.7rem; border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 0.75rem; color: var(--fg-muted);
}
.pill .dot {
  width: 5px; height: 5px; border-radius: 999px; background: var(--accent);
}
.tag {
  font-family: var(--mono); font-size: 0.6875rem; letter-spacing: 0.04em;
  padding: 0.2rem 0.5rem; border-radius: 5px;
  border: 1px solid var(--border); background: var(--surface-2); color: var(--fg-muted);
}

/* ---- Hero ------------------------------------------------------------- */
.hero { position: relative; padding: 5.5rem 0 0; overflow: hidden; text-align: center; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(ellipse 70% 55% at 50% 0%, #000 20%, transparent 100%);
  mask-image: radial-gradient(ellipse 70% 55% at 50% 0%, #000 20%, transparent 100%);
}
.hero .container { position: relative; z-index: 1; }
.hero h1 { max-width: 18ch; margin: 1.5rem auto 0; }
.hero h1 .dim { color: var(--fg-subtle); }
.lead {
  max-width: 58ch; margin: 1.5rem auto 0;
  font-size: 1.0625rem; color: var(--fg-muted);
}
.hero-actions {
  display: flex; flex-wrap: wrap; gap: 0.6rem; justify-content: center;
  margin-top: 2rem;
}
.hero-note { margin-top: 1.25rem; font-size: 0.8125rem; color: var(--fg-subtle); }
/* The table is shown in the capture that matches the theme being viewed. Only
   the one that is needed is fetched, and the manual toggle is followed. */
.screenshot {
  margin: 3.5rem auto 0; max-width: 1000px; aspect-ratio: 2 / 1;
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface) url("promo-light.png") center / cover no-repeat;
}
:root[data-theme="dark"] .screenshot { background-image: url("promo-dark.png"); }

/* ---- Sections --------------------------------------------------------- */
.section { padding: 5.5rem 0; border-top: 1px solid var(--border); }
.section-alt { background: var(--bg-alt); }
.section-head { max-width: 640px; margin-bottom: 2.5rem; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head h2 { margin-top: 0.75rem; }
.section-head p { margin-top: 0.75rem; color: var(--fg-muted); font-size: 1rem; }

/* ---- Bordered grid ---------------------------------------------------- */
.bento {
  display: grid; gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.bento > * { background: var(--bg); padding: 1.75rem; }
.section-alt .bento > * { background: var(--surface); }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }

.feature { display: flex; flex-direction: column; gap: 0.6rem; }
.feature svg { color: var(--accent); }
.feature h3 { margin-top: 0.35rem; }
.feature p { color: var(--fg-muted); font-size: 0.9rem; line-height: 1.6; }

/* ---- Cards ------------------------------------------------------------ */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.75rem;
  display: flex; flex-direction: column; gap: 0.85rem;
}
.card p { color: var(--fg-muted); font-size: 0.925rem; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; }
.card-accent { border-color: var(--border-strong); }
.card .btn { align-self: flex-start; margin-top: auto; }

.list { list-style: none; padding: 0; display: grid; gap: 0.55rem; font-size: 0.9rem; }
.list li { display: flex; gap: 0.6rem; align-items: flex-start; color: var(--fg-muted); }
.mark {
  flex: 0 0 auto; width: 17px; height: 17px; min-width: 17px; margin-top: 0.2rem;
  border-radius: 999px; display: inline-flex; align-items: center; justify-content: center;
}
.mark svg { width: 11px; height: 11px; display: block; }
.mark.ok { background: var(--accent-soft); color: var(--accent); }
.mark.warn { background: var(--warn-soft); color: var(--warn); }

/* ---- Verification, compact ------------------------------------------- */
.stats { margin-bottom: 1.25rem; }
.stat { display: grid; gap: 0.2rem; padding: 1.25rem 1.5rem; }
.stat-num {
  font-family: var(--mono); font-size: clamp(1.25rem, 2.4vw, 1.625rem);
  font-weight: 600; letter-spacing: -0.02em; line-height: 1.1;
}
.stat-key { font-size: 0.75rem; color: var(--fg-subtle); }
.stat-ok .stat-num { color: var(--accent); }

.proof { padding: 1.5rem !important; display: flex; flex-direction: column; gap: 0.6rem; }
.proof h3 { font-size: 0.875rem; }
.proof p { font-size: 0.8125rem; color: var(--fg-muted); line-height: 1.55; }

.mini { width: 100%; border-collapse: collapse; font-size: 0.75rem; font-variant-numeric: tabular-nums; }
.mini th {
  text-align: left; font-family: var(--mono); font-weight: 500;
  font-size: 0.625rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--fg-subtle); padding-bottom: 0.3rem;
}
.mini td { padding: 0.15rem 0; border-top: 1px solid var(--border); color: var(--fg-muted); }
.mini td:first-child { color: var(--fg); }
.mini td + td, .mini th + th { text-align: right; font-family: var(--mono); }

.checks {
  list-style: none; padding: 0; margin-top: 0.15rem;
  display: grid; gap: 0.3rem; font-size: 0.75rem; color: var(--fg-muted);
}
.checks li { display: flex; gap: 0.45rem; align-items: flex-start; line-height: 1.45; }
.checks .mark { width: 15px; height: 15px; min-width: 15px; margin-top: 0.15rem; }
.checks .mark svg { width: 9px; height: 9px; }

.disclose { margin-top: auto; }
.disclose summary {
  cursor: pointer; list-style: none;
  font-family: var(--mono); font-size: 0.6875rem; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--fg-subtle);
  padding-top: 0.6rem; border-top: 1px solid var(--border);
}
.disclose summary::-webkit-details-marker { display: none; }
.disclose summary::after { content: " +"; }
.disclose[open] summary::after { content: " \2212"; }
.disclose summary:hover { color: var(--fg); }
.disclose > *:not(summary) { margin-top: 0.75rem; }

.proof-foot {
  margin-top: 1.25rem; display: flex; flex-wrap: wrap; align-items: center;
  gap: 0.75rem 1.5rem; justify-content: space-between;
}
.proof-foot .code { flex: 1 1 320px; }
.links { display: flex; flex-wrap: wrap; gap: 1rem; font-size: 0.8125rem; color: var(--fg-muted); }
.links a { text-decoration: none; border-bottom: 1px solid var(--border-strong); padding-bottom: 1px; }
.links a:hover { color: var(--fg); border-color: var(--accent); }

/* ---- Callout ---------------------------------------------------------- */
.callout {
  margin-top: 1.5rem; padding: 1rem 1.15rem;
  border: 1px solid var(--border); border-left: 2px solid var(--accent);
  border-radius: var(--radius); background: var(--surface);
  font-size: 0.875rem; color: var(--fg-muted);
}
.callout strong { color: var(--fg); font-weight: 600; }

/* ---- Tabs ------------------------------------------------------------- */
.tabs { max-width: 860px; }
.tabs-list {
  display: inline-flex; gap: 0.25rem; padding: 0.25rem;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 9px; margin-bottom: 1.75rem; max-width: 100%; overflow-x: auto;
}
.tab {
  font: inherit; font-size: 0.8125rem; font-weight: 500;
  padding: 0.35rem 0.8rem; border: 0; border-radius: 6px;
  background: transparent; color: var(--fg-muted); cursor: pointer;
  white-space: nowrap; transition: background 0.15s, color 0.15s;
}
.tab[aria-selected="true"] { background: var(--bg); color: var(--fg); }
.tab:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.tab-panel > p:first-child { color: var(--fg-muted); font-size: 0.925rem; margin-bottom: 1.5rem; }

.steps { list-style: none; counter-reset: step; padding: 0; display: grid; gap: 1.5rem; }
.steps li { position: relative; padding-left: 2.75rem; display: grid; gap: 0.5rem; }
.steps li::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 0; top: 0;
  width: 1.75rem; height: 1.75rem; border-radius: 999px;
  display: grid; place-items: center;
  border: 1px solid var(--border); background: var(--surface);
  font-family: var(--mono); font-size: 0.75rem; color: var(--fg-muted);
}
.steps p { font-size: 0.875rem; color: var(--fg-muted); }

/* ---- Code ------------------------------------------------------------- */
.code {
  position: relative; background: var(--surface-2);
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
}
:root[data-theme="dark"] .code { background: hsl(0 0% 4%); }
.code pre { margin: 0; padding: 0.85rem 4.75rem 0.85rem 1rem; overflow-x: auto; line-height: 1.6; }
.copy {
  position: absolute; top: 0.45rem; right: 0.45rem;
  font: inherit; font-family: var(--mono); font-size: 0.6875rem;
  padding: 0.25rem 0.5rem; border-radius: 6px;
  border: 1px solid var(--border); background: var(--bg); color: var(--fg-muted);
  cursor: pointer; transition: color 0.15s, border-color 0.15s;
}
.copy:hover { color: var(--fg); }
.copy.copied { color: var(--accent); border-color: var(--accent); }

/* ---- Key/value strip -------------------------------------------------- */
.kv { margin-top: 2.5rem; }
.kv-item { display: grid; gap: 0.3rem; padding: 1.25rem 1.5rem; }
.kv-key {
  font-family: var(--mono); font-size: 0.625rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--fg-subtle);
}
.kv-val { font-size: 0.875rem; color: var(--fg-muted); }
.kv-val strong { color: var(--fg); font-weight: 600; }

.more { margin-top: 2rem; color: var(--fg-muted); font-size: 0.875rem; }
.more.center { text-align: center; }

/* ---- FAQ -------------------------------------------------------------- */
.faq { border-top: 1px solid var(--border); }
.faq summary {
  cursor: pointer; padding: 1rem 0; list-style: none;
  font-size: 0.95rem; font-weight: 500;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--fg-subtle); font-weight: 400; font-size: 1.1rem; }
.faq[open] summary::after { content: "\2212"; }
.faq p { padding: 0 0 1.15rem; color: var(--fg-muted); font-size: 0.9rem; max-width: 66ch; }
.faq:last-of-type { border-bottom: 1px solid var(--border); }

/* ---- CTA -------------------------------------------------------------- */
.cta { text-align: center; }
.cta h2 { max-width: 22ch; margin-inline: auto; }
.cta p { margin: 1rem auto 0; max-width: 52ch; color: var(--fg-muted); }

/* ---- Footer ----------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--border); padding: 2.5rem 0;
  font-size: 0.8125rem; color: var(--fg-subtle);
}
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.footer-inner nav { display: flex; gap: 1.5rem; }
.footer-inner a { text-decoration: none; }
.footer-inner a:hover { color: var(--fg); }

/* ---- Responsive ------------------------------------------------------- */
@media (max-width: 940px) {
  .cols-3 { grid-template-columns: repeat(2, 1fr); }
  .cols-4 { grid-template-columns: repeat(2, 1fr); }
  .nav { display: none; }
}
@media (max-width: 640px) {
  .cols-2, .cols-3, .cols-4 { grid-template-columns: 1fr; }
  .section { padding: 3.75rem 0; }
  .hero { padding-top: 3.25rem; }
  .hero-actions .btn { width: 100%; }
  .header-actions .btn-primary { padding: 0 0.7rem; font-size: 0.8125rem; }
  .brand-name { display: none; }
  .bento > * { padding: 1.5rem; }
  .code pre { padding: 2.4rem 1rem 0.85rem; }
}

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

/* ---- Utilities -------------------------------------------------------- */
.stacked { margin-top: 1.25rem; }
.proof.roomy { gap: 1rem; }
.proof.roomy p { font-size: 0.925rem; }
.cta h2 { margin-top: 0.75rem; }
.cta .hero-actions { margin-top: 1.75rem; }