/* OMTV Utility Tools — shared design system */
:root {
  --bg: #0b1220;
  --bg-elevated: #121a2b;
  --bg-soft: #18233a;
  --border: #24314d;
  --text: #eef3ff;
  --muted: #9aa8c7;
  --faint: #6d7b9a;
  --brand: #5b8cff;
  --brand-2: #35d0ba;
  --brand-hot: #ff7a59;
  --ok: #3ddc97;
  --warn: #ffcc66;
  --danger: #ff6b8a;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --radius: 16px;
  --radius-sm: 10px;
  --max: 1080px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(91, 140, 255, 0.18), transparent 55%),
    radial-gradient(900px 500px at 90% 0%, rgba(53, 208, 186, 0.12), transparent 50%),
    var(--bg);
  min-height: 100vh;
  line-height: 1.55;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { width: min(100% - 2rem, var(--max)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 40;
  backdrop-filter: blur(14px);
  background: rgba(11, 18, 32, 0.78);
  border-bottom: 1px solid rgba(36, 49, 77, 0.85);
}
.site-header .inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: 0.85rem 0;
}
.brand {
  display: flex; align-items: center; gap: 0.65rem;
  color: var(--text); font-weight: 750; letter-spacing: -0.02em;
  text-decoration: none;
}
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 10px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #061018; font-weight: 900; font-size: 0.95rem;
}
.nav { display: flex; gap: 0.85rem; flex-wrap: wrap; align-items: center; }
.nav a { color: var(--muted); font-size: 0.92rem; }
.nav a:hover { color: var(--text); }
.hero { padding: 2.6rem 0 1.4rem; }
.hero h1 {
  margin: 0 0 0.65rem;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}
.hero p.lead { margin: 0; color: var(--muted); font-size: 1.05rem; max-width: 62ch; }
.pill-row { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1rem; }
.pill {
  display: inline-flex; align-items: center; gap: 0.35rem;
  padding: 0.28rem 0.7rem; border-radius: 999px;
  background: rgba(91, 140, 255, 0.12);
  border: 1px solid rgba(91, 140, 255, 0.25);
  color: #c9d9ff; font-size: 0.82rem;
}
.panel {
  background: linear-gradient(180deg, rgba(24, 35, 58, 0.95), rgba(18, 26, 43, 0.98));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem;
}
.panel + .panel { margin-top: 1rem; }
.tool-shell { padding: 0.4rem 0 2.5rem; }
.tool-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 1rem; }
@media (max-width: 860px) { .tool-grid { grid-template-columns: 1fr; } }
label { display: block; font-size: 0.86rem; color: var(--muted); margin-bottom: 0.35rem; font-weight: 600; }
.field { margin-bottom: 0.9rem; }
input[type="text"], input[type="number"], input[type="time"], input[type="email"], select, textarea {
  width: 100%; border: 1px solid var(--border); background: #0d1526; color: var(--text);
  border-radius: var(--radius-sm); padding: 0.78rem 0.9rem; font: inherit; outline: none;
}
input:focus, select:focus, textarea:focus {
  border-color: rgba(91, 140, 255, 0.7);
  box-shadow: 0 0 0 3px rgba(91, 140, 255, 0.18);
}
.row { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.row > * { flex: 1 1 140px; }
.btn {
  appearance: none; border: 0; cursor: pointer; border-radius: 12px;
  padding: 0.82rem 1.1rem; font-weight: 700; font-size: 0.98rem; color: #061018;
  background: linear-gradient(135deg, var(--brand), #7aa4ff);
  transition: transform .12s ease, filter .12s ease;
}
.btn:hover { filter: brightness(1.05); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-hot { background: linear-gradient(135deg, var(--brand-hot), #ff9a6b); color: #1a0b06; }
.btn-row { display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: center; }
.muted { color: var(--muted); }
.faint { color: var(--faint); }
.mono { font-family: var(--mono); }
.small { font-size: 0.9rem; }
.center { text-align: center; }
.results { min-height: 180px; }
.result-meta {
  display: flex; justify-content: space-between; gap: 0.75rem; flex-wrap: wrap;
  margin-bottom: 0.8rem; color: var(--muted); font-size: 0.9rem;
}
.chip-list { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.chip {
  background: rgba(53, 208, 186, 0.1); border: 1px solid rgba(53, 208, 186, 0.25);
  color: #d7fff6; border-radius: 999px; padding: 0.28rem 0.65rem;
  font-family: var(--mono); font-size: 0.88rem;
}
.chip:hover { background: rgba(53, 208, 186, 0.18); cursor: pointer; }
.group-title {
  margin: 1rem 0 0.45rem; font-size: 0.85rem; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--faint);
}
.card-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 0.9rem; padding: 0 0 2.5rem;
}
.card {
  display: block; padding: 1.1rem; border-radius: var(--radius);
  border: 1px solid var(--border); background: rgba(18, 26, 43, 0.9);
  color: inherit; text-decoration: none;
  transition: border-color .15s ease, transform .15s ease;
}
.card:hover { border-color: rgba(91, 140, 255, 0.55); transform: translateY(-2px); text-decoration: none; }
.card h3 { margin: 0 0 0.35rem; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.92rem; }
.card .tag {
  display: inline-block; margin-top: 0.75rem; font-size: 0.75rem; color: #b7c9ff;
  background: rgba(91,140,255,.12); border-radius: 999px; padding: .18rem .5rem;
}
.prose { padding: 0.5rem 0 2.5rem; color: var(--muted); max-width: 75ch; }
.prose h2, .prose h3 { color: var(--text); }
.prose code {
  font-family: var(--mono); background: rgba(255,255,255,0.06);
  padding: 0.1rem 0.35rem; border-radius: 6px;
}
.ad-slot {
  border: 1px dashed rgba(154, 168, 199, 0.35); border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.02); color: var(--faint); min-height: 90px;
  display: grid; place-items: center; margin: 1rem 0; font-size: 0.82rem;
  text-align: center; padding: 0.75rem;
}
.ad-slot.leaderboard { min-height: 100px; }
.ad-slot.sidebar { min-height: 250px; }
.ad-slot.inline { min-height: 120px; }
.site-footer {
  border-top: 1px solid var(--border); padding: 2rem 0 2.6rem;
  color: var(--muted); font-size: 0.9rem;
}
.site-footer .inner { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 1.2rem; }
@media (max-width: 760px) { .site-footer .inner { grid-template-columns: 1fr; } }
.site-footer h4 { margin: 0 0 0.5rem; color: var(--text); font-size: 0.92rem; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin: 0.28rem 0; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--text); }
.status-ok { color: var(--ok); }
.status-warn { color: var(--warn); }
.big-stat { font-size: clamp(1.6rem, 4vw, 2.3rem); font-weight: 800; letter-spacing: -0.03em; }
.kv { display: grid; gap: 0.45rem; }
.kv div {
  display: flex; justify-content: space-between; gap: 1rem;
  padding: 0.55rem 0.7rem; border-radius: 10px;
  background: rgba(255,255,255,0.03); border: 1px solid rgba(36,49,77,0.7);
}
.kv span:first-child { color: var(--muted); }
.hidden { display: none !important; }
.checkbox-row { display:flex; gap:0.75rem; flex-wrap:wrap; align-items:center; }
.checkbox-row label { display:flex; gap:0.4rem; align-items:center; margin:0; font-weight:500; color:var(--text); }
details.options { margin-top: 0.5rem; }
details.options summary { cursor:pointer; color: var(--muted); font-weight:600; margin-bottom:0.6rem; }
.sleep-card {
  border:1px solid var(--border); border-radius:12px; padding:0.9rem;
  background: rgba(255,255,255,0.03); margin-bottom:0.55rem;
}
.sleep-card strong { display:block; font-size:1.2rem; }

/* SEO layout helpers */
.breadcrumbs { padding: 0.85rem 0 0; font-size: 0.88rem; color: var(--faint); }
.breadcrumbs ol { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 0.35rem 0.5rem; align-items: center; }
.breadcrumbs li { display: inline-flex; align-items: center; gap: 0.5rem; }
.breadcrumbs li:not(:last-child)::after { content: "/"; color: var(--faint); opacity: 0.7; }
.breadcrumbs a { color: var(--muted); }
.breadcrumbs a:hover { color: var(--text); }
.breadcrumbs [aria-current="page"] { color: var(--text); }
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 0.75rem; margin: 0.5rem 0 1.5rem; }
.related-grid a { display:block; padding: 0.85rem 0.95rem; border: 1px solid var(--border); border-radius: 12px; background: rgba(18,26,43,0.9); color: inherit; text-decoration: none; }
.related-grid a:hover { border-color: rgba(91,140,255,0.55); text-decoration: none; }
.related-grid strong { display:block; margin-bottom: 0.25rem; }
.related-grid span { color: var(--muted); font-size: 0.9rem; }
.faq details { border: 1px solid var(--border); border-radius: 12px; padding: 0.75rem 0.95rem; background: rgba(255,255,255,0.02); margin: 0.55rem 0; }
.faq summary { cursor: pointer; color: var(--text); font-weight: 650; }
.faq details p { margin: 0.55rem 0 0.15rem; color: var(--muted); }
.section-title { margin: 1.4rem 0 0.7rem; font-size: 1.25rem; letter-spacing: -0.02em; }
.cat-label { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--faint); margin: 1.2rem 0 0.55rem; }

/* Batch tools extras */
.swatch { width: 100%; min-height: 120px; border-radius: 14px; border: 1px solid var(--border); box-shadow: inset 0 0 0 1px rgba(255,255,255,0.04); }
.strength-bar { height: 10px; border-radius: 999px; background: rgba(255,255,255,0.08); overflow: hidden; margin: 0.6rem 0; }
.strength-bar > span { display:block; height:100%; width:0; transition: width .15s ease, background .15s ease; }
.mono-out { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; white-space: pre-wrap; word-break: break-word; }