/* Meantime landing page: self-contained, light/dark aware. */
:root {
  color-scheme: light dark;
  --bg: #f7f9ff;
  --surface: #ffffff;
  --ink: #101426;
  --muted: #5a6178;
  --accent: #2f63e7;
  --error: #b42318;
  --accent-ink: #ffffff;
  --border: rgba(16, 20, 38, 0.10);
  --shadow: 0 18px 48px rgba(16, 20, 38, 0.12);
  --radius: 16px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0e1a;
    --surface: #151a2c;
    --ink: #eef1fb;
    --muted: #9aa3c0;
    --accent: #5a8bff;
    --error: #ff6961;
    --accent-ink: #0b0e1a;
    --border: rgba(238, 241, 251, 0.12);
    --shadow: 0 18px 48px rgba(0, 0, 0, 0.5);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
}
img { max-width: 100%; height: auto; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
:where(a, button, input, select):focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: absolute; left: -9999px; top: 0; background: var(--accent);
  color: var(--accent-ink); padding: 0.5rem 1rem; border-radius: 8px; z-index: 10;
}
.skip-link:focus { left: 1rem; top: 1rem; }

.site-header {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 0.5rem 1.2rem;
  max-width: 980px; margin: 0 auto; padding: 1.1rem 1.5rem;
}
.brand { display: flex; align-items: center; gap: 0.6rem; font-weight: 700; color: var(--ink); flex-shrink: 0; }
.brand img { border-radius: 8px; }
.site-header nav { display: flex; gap: 1.4rem; }
.site-header nav a { color: var(--muted); font-weight: 500; }
.site-header nav a:hover { color: var(--accent); text-decoration: none; }
.site-header [aria-current="page"] { color: var(--accent); }

@media (max-width: 640px) {
  .site-header { justify-content: center; padding-inline: 1rem; }
  .site-header nav {
    width: 100%; justify-content: center; flex-wrap: wrap;
    gap: 0.5rem 1rem; text-align: center;
  }
}

main { max-width: 980px; margin: 0 auto; padding: 0 1.5rem 4rem; }

.hero { text-align: center; padding: 3.5rem 0 2rem; }
.hero-icon { border-radius: 28px; box-shadow: var(--shadow); }
.eyebrow {
  text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.78rem;
  font-weight: 700; color: var(--accent); margin: 1.6rem 0 0.4rem;
}
h1 { font-size: clamp(2.1rem, 5.5vw, 3.2rem); line-height: 1.12; margin: 0.2rem 0 0.8rem; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 3.4vw, 2rem); line-height: 1.18; margin: 0.2rem 0 0.7rem; letter-spacing: -0.01em; }
.hero-summary { font-size: 1.15rem; color: var(--muted); max-width: 34rem; margin: 0 auto 1.6rem; }

.actions { display: flex; gap: 0.8rem; justify-content: center; flex-wrap: wrap; }
.button {
  display: inline-block; padding: 0.72rem 1.5rem; border-radius: 999px;
  font-weight: 600; transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.button:hover { text-decoration: none; transform: translateY(-1px); }
.button.primary { background: var(--accent); color: var(--accent-ink); box-shadow: 0 8px 22px rgba(47, 99, 231, 0.35); }
.button.secondary { border: 1px solid var(--border); color: var(--ink); background: var(--surface); }
.compatibility { color: var(--muted); font-size: 0.9rem; margin-top: 1rem; }
.actions + .compatibility { margin-top: 1.35rem; }

.hero-shot {
  margin-top: 2.4rem; border-radius: var(--radius);
  box-shadow: var(--shadow); border: 1px solid var(--border);
}
.settings-shot {
  display: block; margin: 2rem auto 0; border-radius: var(--radius);
  box-shadow: var(--shadow); border: 1px solid var(--border);
}

.section { padding: 3.4rem 0 0; text-align: center; }
.section > p:not(.eyebrow) { color: var(--muted); max-width: 40rem; margin: 0 auto; }
.section h2 { margin-bottom: 1rem; }
.section .actions { margin-top: 1.6rem; }

.feature-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem; margin-top: 2rem; text-align: left;
}
.feature-grid article {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.3rem 1.4rem;
}
.feature-grid span { font-size: 1.5rem; }
.feature-grid h3 { margin: 0.5rem 0 0.3rem; font-size: 1.02rem; }
.feature-grid p { margin: 0; color: var(--muted); font-size: 0.94rem; }

.download { padding-bottom: 0.5rem; }
.download img { border-radius: 22px; box-shadow: var(--shadow); margin-bottom: 0.6rem; }
.section.download > .compatibility { margin-top: 1.8rem; }

/* Format builder */
.builder-page { padding-top: 2rem; }
.builder-intro { max-width: 36rem; margin: 0 auto; }
.builder { max-width: 720px; margin: 0 auto; text-align: left; }
/* Keep the live preview and the pattern input in view while the token reference
   below scrolls, so the effect of every change stays visible. */
.builder-sticky {
  position: sticky;
  top: 0;
  z-index: 5;
  background: var(--bg);
  padding-block: 1.4rem 1rem;
}
.builder-sticky .preview-card { margin-top: 0; }
.builder-sticky .pattern-row { margin-bottom: 0; }
.preview-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 1.6rem; text-align: center; margin: 2rem 0 1.4rem;
}
.preview-time {
  font-variant-numeric: tabular-nums;
  font-size: clamp(2rem, 6vw, 3rem); font-weight: 700; letter-spacing: -0.01em;
}
.preview-caption { color: var(--muted); font-size: 0.85rem; margin: 0.3rem 0 0; }
.preset-row { margin-bottom: 1rem; }
.preset-row label, .literal-row label { display: block; font-weight: 650; margin-bottom: 0.35rem; }
.preset-row select, .pattern-row input, .literal-row input {
  width: 100%; font: inherit; padding: 0.65rem 0.8rem; border-radius: 10px;
  border: 1px solid var(--border); background: var(--surface); color: var(--ink);
}
.pattern-row { display: grid; grid-template-columns: 1fr auto auto; gap: 0.6rem; margin-bottom: 1.6rem; }
.pattern-row input { font: 600 1.05rem/1.4 ui-monospace, "SF Mono", Menlo, monospace; }
.preset-row select:focus, .pattern-row input:focus, .literal-row input:focus {
  outline: 2px solid var(--accent); outline-offset: 1px;
}
.builder-button {
  font: inherit; font-weight: 600; padding: 0.65rem 1rem; border-radius: 10px;
  border: 1px solid var(--border); background: var(--surface); color: var(--ink); cursor: pointer;
}
.builder-button.primary { border-color: var(--accent); background: var(--accent); color: var(--accent-ink); }
.builder-button:hover:not(:disabled) { filter: brightness(1.08); border-color: var(--accent); }
.builder-button:disabled { cursor: not-allowed; opacity: 0.45; }
.builder-groups { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 0.8rem; }
.builder fieldset {
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--surface); padding: 0.9rem 1rem 1rem; margin: 0;
}
.builder legend {
  font-weight: 700; font-size: 0.78rem; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--muted); padding: 0 0.35rem;
}
.token-buttons { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.token-buttons button {
  min-width: 3.25rem; font: inherit; cursor: pointer; padding: 0.45rem 0.6rem;
  border: 1px solid var(--border); border-radius: 9px; background: transparent; color: var(--ink);
}
.token-buttons button:hover:not(:disabled) { border-color: var(--accent); }
.token-buttons button:disabled { cursor: not-allowed; opacity: 0.4; }
.token-buttons code { display: block; font-weight: 700; font-family: ui-monospace, "SF Mono", Menlo, monospace; }
.token-buttons small { display: block; color: var(--muted); }
.literal-fieldset { margin-top: 0.8rem !important; }
.literal-row { display: grid; grid-template-columns: 1fr auto; gap: 0.6rem; align-items: end; }
.builder .hint { color: var(--muted); font-size: 0.9rem; }
.builder-status { min-height: 1.5em; color: var(--muted); font-size: 0.9rem; margin: 0.8rem 0 0; }
.builder-status.error { color: var(--error); }
.builder-help { margin-top: 1.4rem; }
.back { display: inline-block; margin-top: 2rem; }
@media (max-width: 560px) {
  .pattern-row { grid-template-columns: 1fr 1fr; }
  .pattern-row input { grid-column: 1 / -1; }
}

.site-footer {
  border-top: 1px solid var(--border); text-align: center;
  color: var(--muted); font-size: 0.9rem; padding: 1.6rem 1rem 2.2rem;
  margin-top: 3rem;
}