/* FenceScore design system. Tokens first; dark mode follows the OS unless data-theme is set. */
/* FenceScore design system — SnapStudio's "Apple" theme (after apple.com), Day and Dark.
   Values mirror StudioThemeKit.swift appleDay / appleDark. Dark follows the OS unless data-theme is set. */
:root {
  --bg: #f5f5f7; --surface: #ffffff; --surface-2: #e8e8ed; --raised: #fbfbfd; --border: rgba(0,0,0,.08);
  --separator: rgba(0,0,0,.1); --text: #1d1d1f; --muted: #6e6e73; --tertiary: #86868b;
  --primary: #0071e3; --primary-ink: #ffffff; --link: #0066cc;
  --red: #ff3b30; --green: #28a745; --yellow: #d67800; --black: #1d1d1f;
  --focus: #0071e3; --radius: 18px; --control-radius: 980px; --field-radius: 12px;
  --shadow: 0 2px 12px rgba(0,0,0,.06);
  --nav-bg: rgba(251,251,253,.8);
  --mono: "SF Mono", ui-monospace, Menlo, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Helvetica, Arial, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #000000; --surface: #161617; --surface-2: #2a2a2d; --raised: #1d1d1f; --border: rgba(255,255,255,.06);
    --separator: rgba(255,255,255,.1); --text: #f5f5f7; --muted: #86868b; --tertiary: #6e6e73;
    --primary: #0071e3; --primary-ink: #fff; --link: #2997ff; --focus: #2997ff;
    --red: #ff453a; --green: #30d158; --yellow: #ff9f0a; --shadow: none; --nav-bg: rgba(22,22,23,.8);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #000000; --surface: #161617; --surface-2: #2a2a2d; --raised: #1d1d1f; --border: rgba(255,255,255,.06);
  --separator: rgba(255,255,255,.1); --text: #f5f5f7; --muted: #86868b; --tertiary: #6e6e73;
  --primary: #0071e3; --primary-ink: #fff; --link: #2997ff; --focus: #2997ff;
  --red: #ff453a; --green: #30d158; --yellow: #ff9f0a; --shadow: none; --nav-bg: rgba(22,22,23,.8);
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--text); font: 17px/1.47 var(--sans); letter-spacing: -.022em; -webkit-font-smoothing: antialiased; overflow-wrap: normal; word-break: normal; hyphens: none; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { font-family: var(--display); line-height: 1.1; margin: 0 0 .5em; letter-spacing: -.015em; }
h1 { font-size: 2.5rem; font-weight: 700; letter-spacing: -.025em; } h2 { font-size: 1.75rem; font-weight: 700; } h3 { font-size: 1.2rem; font-weight: 600; }
.display { font-size: 4.5rem; font-weight: 700; letter-spacing: -.03em; }
.lead { font-size: 1.3rem; line-height: 1.4; color: var(--muted); }
.muted { color: var(--muted); } .small { font-size: .85rem; }
.mono { font-family: var(--mono); }
.nowrap { white-space: nowrap; }

.container { max-width: 1120px; margin: 0 auto; padding: 32px 22px; }
.container.narrow { max-width: 520px; }
.center-pad { padding-top: 48px; }
.stack > * + * { margin-top: 12px; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.grid-2 { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.inline { display: inline; }

.topbar { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 48px; padding: 4px 22px; background: var(--nav-bg); -webkit-backdrop-filter: saturate(180%) blur(20px); backdrop-filter: saturate(180%) blur(20px); border-bottom: 1px solid var(--separator); flex-wrap: wrap; font-size: 13px; }
.brand { display: flex; align-items: center; gap: 8px; color: var(--text); font-weight: 600; font-size: 17px; white-space: nowrap; letter-spacing: -.02em; }
.brand b { color: var(--text); font-weight: 600; }
.brand:hover { text-decoration: none; }
.topnav { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.topnav > a:not(.btn) { padding: 6px 10px; color: var(--text); opacity: .8; white-space: nowrap; font-weight: 400; }
.topnav > a.active, .topnav > a:not(.btn):hover { opacity: 1; text-decoration: none; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.card h2:first-child, .card h3:first-child { margin-top: 0; }
.form-card { padding: 36px; }
.card-link { display: block; color: inherit; }
.card-link:hover { text-decoration: none; border-color: var(--primary); }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 10px 20px; border-radius: var(--control-radius); border: 1px solid transparent; background: var(--surface-2); color: var(--text); font: 400 15px var(--sans); letter-spacing: -.01em; cursor: pointer; white-space: nowrap; text-decoration: none; transition: background-color .2s, filter .2s; }
.btn:hover { text-decoration: none; filter: brightness(1.08); }
.btn:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.btn-primary { background: var(--primary); color: var(--primary-ink); }
.btn-primary:hover { background: #0077ed; filter: none; }
.btn-danger { background: var(--red); border-color: var(--red); color: #fff; }
.btn-success { background: var(--green); border-color: var(--green); color: #fff; }
.btn-ghost { background: transparent; border-color: var(--link); color: var(--link); }
.btn-sm { padding: 5px 12px; font-size: 13px; }
.btn-lg { padding: 13px 26px; font-size: 17px; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

label { display: block; font-weight: 500; font-size: 14px; color: var(--text); }
input, select, textarea { display: block; width: 100%; margin-top: 6px; padding: 12px 14px; border: 1px solid var(--tertiary); border-radius: var(--field-radius); background: var(--surface); color: var(--text); font: 17px var(--sans); letter-spacing: -.02em; }
input[type=checkbox], input[type=radio] { display: inline-block; width: auto; margin: 0 6px 0 0; accent-color: var(--primary); }
textarea { min-height: 120px; }
.check { display: flex; align-items: center; font-weight: 500; }

table.table { width: 100%; border-collapse: separate; border-spacing: 0; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.table th, .table td { padding: 12px 16px; border-bottom: 1px solid var(--separator); text-align: left; vertical-align: middle; font-size: 15px; }
.table th { background: var(--surface); font-size: 12px; font-weight: 600; letter-spacing: 0; color: var(--muted); white-space: nowrap; }
.table tr:last-child td { border-bottom: 0; }
.table-wrap { overflow-x: auto; }

.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; letter-spacing: 0; background: var(--surface-2); color: var(--muted); white-space: nowrap; vertical-align: middle; }
.badge-live { background: var(--red); color: #fff; }
.badge-ok { background: color-mix(in srgb, var(--green) 18%, transparent); color: var(--green); }
.badge-warn { background: color-mix(in srgb, var(--yellow) 22%, transparent); color: #a16207; }
.alert { padding: 12px 16px; border-radius: var(--field-radius); border: 1px solid var(--border); background: var(--surface-2); }
.alert-error { border-color: var(--red); color: var(--red); background: color-mix(in srgb, var(--red) 10%, transparent); }
.alert-ok { border-color: var(--green); color: var(--green); background: color-mix(in srgb, var(--green) 10%, transparent); }
.flash { padding: 10px 16px; text-align: center; font-size: 14px; background: var(--surface); border-bottom: 1px solid var(--separator); }
.flash-error { color: var(--red); } .flash-ok { color: var(--green); }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--separator); margin-bottom: 28px; overflow-x: auto; }
.tabs a { padding: 12px 14px; color: var(--muted); font-size: 15px; font-weight: 400; white-space: nowrap; border-bottom: 2px solid transparent; }
.tabs a.active { color: var(--text); border-bottom-color: var(--text); }
.tabs a:hover { text-decoration: none; color: var(--text); }

.stat { display: flex; flex-direction: column; gap: 2px; }
.stat .num { font-family: var(--display); font-size: 2.5rem; font-weight: 700; letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.stat .lbl { color: var(--muted); font-size: 13px; }

.lamp { display: inline-block; width: 14px; height: 14px; border-radius: 50%; background: var(--surface-2); border: 1px solid var(--border); }
.lamp.red.on { background: var(--red); border-color: var(--red); box-shadow: 0 0 10px var(--red); }
.lamp.green.on { background: var(--green); border-color: var(--green); box-shadow: 0 0 10px var(--green); }

.site-foot { display: flex; gap: 16px; justify-content: center; padding: 32px 22px; color: var(--muted); font-size: 12px; border-top: 1px solid var(--separator); margin-top: 48px; }
.hero { padding: 96px 22px 56px; text-align: center; }
.hero h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 700; letter-spacing: -.035em; line-height: 1.05; }
.hero .lead { max-width: 640px; margin: 0 auto 24px; }

@media (max-width: 640px) {
  .container { padding: 24px 16px; }
  .topbar { padding: 4px 16px; }
  h1 { font-size: 2rem; }
  .hero { padding: 56px 16px 32px; }
}

/* Apple-style section bands and tiles */
.band { padding: 72px 22px; text-align: center; }
.band-alt { background: var(--surface); }
.tile { background: var(--surface); border-radius: var(--radius); padding: 40px 32px; text-align: center; }
.tile h3 { font-size: 1.6rem; font-weight: 700; letter-spacing: -.02em; }
.link-arrow::after { content: " \203A"; }
.eyebrow { font-size: 14px; font-weight: 600; color: var(--muted); letter-spacing: 0; }
.grid-2x2 { display: grid; gap: 16px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 720px) { .grid-2x2 { grid-template-columns: 1fr; } }
.demo-bar { display: flex; gap: 12px; align-items: center; justify-content: center; flex-wrap: wrap; padding: 8px 16px; font-size: 14px; background: var(--primary); color: var(--primary-ink); }
.demo-bar .btn { background: var(--primary-ink); color: var(--primary); }
.demo-card { margin-top: 16px; }
.demo-list { padding-left: 20px; } .demo-list li + li { margin-top: 8px; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }