:root {
  --ground: #F1F4F6;
  --surface: #FFFFFF;
  --ink: #0D1B2A;
  --ink-2: #4B5B6B;
  --rule: #D6DEE5;
  --field: #F7F9FA;
  --accent: #C8102E;
  --accent-ink: #FFFFFF;
  --accent-soft: #FCE8EB;
  --good: #00843D;
  --good-soft: #E1F3E8;
  --warn: #9A5B00;
  --warn-soft: #FBEBD0;
  --slip: #0D1B2A;
  --slip-ink: #EEF2F5;
  --slip-2: #93A6B6;
  --slip-rule: #2A3B4B;
  --display: "Sora", "Figtree", system-ui, sans-serif;
  --sans: "Figtree", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ground: #0B141C; --surface: #121E28; --ink: #E6EDF2; --ink-2: #9DB0C0; --rule: #22313D; --field: #0F1A23;
    --accent: #FF5A6E; --accent-ink: #1A0508; --accent-soft: #3A1219; --good: #3DD68C; --good-soft: #11301F;
    --warn: #E8B04B; --warn-soft: #3A2C10; --slip: #06101A; --slip-ink: #E6EDF2; --slip-2: #8397A8; --slip-rule: #1D2C39; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --ground: #0B141C; --surface: #121E28; --ink: #E6EDF2; --ink-2: #9DB0C0; --rule: #22313D; --field: #0F1A23;
  --accent: #FF5A6E; --accent-ink: #1A0508; --accent-soft: #3A1219; --good: #3DD68C; --good-soft: #11301F;
  --warn: #E8B04B; --warn-soft: #3A2C10; --slip: #06101A; --slip-ink: #E6EDF2; --slip-2: #8397A8; --slip-rule: #1D2C39; color-scheme: dark;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--ground); color: var(--ink); font: 16px/1.55 var(--sans); }
a { color: inherit; }
.wrap { max-width: 1140px; margin: 0 auto; padding-inline: 20px; }
h1, h2, h3 { font-family: var(--display); line-height: 1.12; text-wrap: balance; margin: 0; letter-spacing: -0.015em; }
h1 { font-size: clamp(1.9rem, 4.4vw, 3rem); font-weight: 700; }
h2 { font-size: clamp(1.35rem, 2.6vw, 1.8rem); font-weight: 650; }
h3 { font-size: 1.05rem; font-weight: 650; }
p { margin: 0; }
.eyebrow { font: 600 .72rem/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--ink-2); }
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

/* Header */
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 18px; }
.brand { display: flex; align-items: baseline; gap: 10px; text-decoration: none; }
.brand b { font: 700 1.3rem/1 var(--display); letter-spacing: -0.02em; }
.brand span { font: 500 1rem/1 "Noto Naskh Arabic", serif; color: var(--accent); }
.top nav { display: flex; gap: 18px; flex-wrap: wrap; font-size: .9rem; }
.top nav a { color: var(--ink-2); text-decoration: none; }
.top nav a:hover, .top nav a[aria-current="page"] { color: var(--ink); }
.flagbar { height: 4px; background: linear-gradient(90deg, var(--accent) 0 25%, var(--good) 25% 50%, var(--surface) 50% 75%, var(--ink) 75%); }

/* Home */
.home-hero { padding-block: 36px 28px; display: grid; gap: 16px; max-width: 760px; }
.home-hero p { font-size: 1.12rem; color: var(--ink-2); }
.grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 14px; padding-bottom: 56px; }
.grid .card { grid-column: span 3; }
.grid .card:nth-child(-n+3) { grid-column: span 4; }
.card { background: var(--surface); border: 1px solid var(--rule); border-radius: 12px; padding: 20px; display: grid; gap: 10px; align-content: start; text-decoration: none; transition: border-color .15s, transform .15s; }
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card .formula { font: 500 .8rem/1.4 var(--mono); color: var(--ink-2); background: var(--field); border-radius: 6px; padding: 8px 10px; }
.card p { color: var(--ink-2); font-size: .94rem; }
.card .tag { justify-self: start; }
.tag { display: inline-flex; font: 600 .7rem/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; padding: 5px 8px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); }
.tag.good { background: var(--good-soft); color: var(--good); }

/* Calculator page */
.calc-head { padding-block: 24px 20px; display: grid; gap: 10px; max-width: 780px; }
.calc-head p { color: var(--ink-2); font-size: 1.05rem; }
.calc { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 20px; align-items: start; padding-bottom: 40px; }
.form { background: var(--surface); border: 1px solid var(--rule); border-radius: 14px; padding: 22px; display: grid; gap: 16px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { display: grid; gap: 6px; }
.field label, .field .lbl { font-weight: 600; font-size: .9rem; }
.field .hint { font-size: .8rem; color: var(--ink-2); }
.input { display: flex; align-items: center; border: 1px solid var(--rule); border-radius: 8px; background: var(--field); overflow: hidden; }
.input:focus-within { border-color: var(--accent); }
.input input, .input select { flex: 1; min-width: 0; font: 500 1rem var(--mono); padding: 11px 12px; border: 0; background: transparent; color: var(--ink); outline: none; }
.input select { font-family: var(--sans); }
.input .unit { font: 600 .78rem var(--mono); color: var(--ink-2); padding-inline: 12px; }
.seg { display: flex; flex-wrap: wrap; gap: 6px; }
.seg label { cursor: pointer; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span { display: inline-block; padding: 9px 12px; border: 1px solid var(--rule); border-radius: 8px; font-size: .9rem; font-weight: 600; background: var(--field); }
.seg input:checked + span { background: var(--ink); color: var(--surface); border-color: var(--ink); }
.seg input:focus-visible + span { outline: 3px solid var(--accent); outline-offset: 2px; }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: .9rem; }
.check input { margin-top: 4px; accent-color: var(--accent); }
.note { font-size: .85rem; padding: 10px 12px; border-radius: 8px; background: var(--warn-soft); color: var(--warn); }

/* Result slip */
.slip { position: sticky; top: calc(env(safe-area-inset-top, 0px) + 16px); background: var(--slip); color: var(--slip-ink); border-radius: 14px; padding: 22px; display: grid; gap: 14px; }
.slip .big-label { font: 600 .72rem/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--slip-2); }
.slip .big { font: 600 clamp(2rem, 5vw, 2.7rem)/1 var(--mono); font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }
.slip .big small { font-size: .45em; color: var(--slip-2); margin-right: 6px; letter-spacing: 0; }
.slip .sub { color: var(--slip-2); font-size: .9rem; }
.lines { display: grid; gap: 8px; border-top: 1px dashed var(--slip-rule); padding-top: 14px; }
.line { display: flex; align-items: baseline; gap: 8px; font-size: .9rem; }
.line .k { color: var(--slip-2); }
.line .dots { flex: 1; border-bottom: 1px dotted var(--slip-rule); transform: translateY(-4px); min-width: 12px; }
.line .v { font-family: var(--mono); font-variant-numeric: tabular-nums; white-space: nowrap; }
.line.total { font-weight: 700; border-top: 1px solid var(--slip-rule); padding-top: 8px; }
.line.total .k { color: var(--slip-ink); }
.verdict { font: 600 1.05rem/1.35 var(--display); }
.pill { display: inline-flex; font: 600 .72rem/1 var(--mono); padding: 5px 8px; border-radius: 999px; }
.pill.ok { background: rgba(61, 214, 140, .16); color: #3DD68C; }
.pill.bad { background: rgba(255, 90, 110, .16); color: #FF7A8A; }
.chart svg { width: 100%; height: auto; display: block; }
.legend { display: flex; gap: 14px; font-size: .8rem; color: var(--slip-2); flex-wrap: wrap; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 6px; vertical-align: -1px; }

/* Lead CTA */
.cta { background: var(--accent); color: var(--accent-ink); border-radius: 12px; padding: 16px; display: grid; gap: 10px; }
.cta p { font-size: .92rem; }
.btn { font: 700 .95rem/1 var(--sans); border-radius: 8px; padding: 12px 16px; border: 1px solid transparent; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 8px; text-decoration: none; }
.btn-light { background: #FFFFFF; color: #0D1B2A; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--rule); }
.btn:disabled { opacity: .6; cursor: wait; }

/* Content */
.content { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 40px; padding-block: 40px 56px; border-top: 1px solid var(--rule); }
.prose { display: grid; gap: 14px; max-width: 68ch; }
.prose h2 { margin-top: 14px; }
.prose p, .prose li { color: var(--ink-2); }
.prose ul { margin: 0; padding-left: 20px; display: grid; gap: 6px; }
.prose code, .formula-box { font: 500 .9rem/1.5 var(--mono); background: var(--surface); border: 1px solid var(--rule); border-radius: 8px; padding: 12px 14px; display: block; color: var(--ink); white-space: pre-wrap; }
.prose table { border-collapse: collapse; width: 100%; font-size: .92rem; }
.prose th, .prose td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--rule); }
.prose td.n, .prose th.n { text-align: right; font-family: var(--mono); font-variant-numeric: tabular-nums; }
.tbl { overflow-x: auto; }
details { border-bottom: 1px solid var(--rule); padding-block: 14px; }
summary { cursor: pointer; font-weight: 650; color: var(--ink); }
details p { margin-top: 8px; }
.side { display: grid; gap: 14px; align-content: start; }
.side .box { background: var(--surface); border: 1px solid var(--rule); border-radius: 12px; padding: 16px; display: grid; gap: 8px; }
.side .box a { text-decoration: none; font-weight: 600; font-size: .95rem; }
.side .box a:hover { color: var(--accent); }
.sources { font-size: .85rem; }
.sources a { color: var(--ink-2); }
.ad { min-height: 0; }
footer { border-top: 1px solid var(--rule); padding-block: 28px 44px; color: var(--ink-2); font-size: .85rem; display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; }
footer a { color: var(--ink-2); }

/* Lead modal */
.modal { position: fixed; inset: 0; background: rgba(6, 12, 18, .6); display: grid; place-items: center; padding: 16px; z-index: 20; }
.modal-card { background: var(--surface); color: var(--ink); border-radius: 14px; width: 100%; max-width: 440px; padding: 24px; display: grid; gap: 14px; border: 1px solid var(--rule); max-height: calc(100% - 32px); overflow-y: auto; }
.modal-card p { color: var(--ink-2); font-size: .92rem; }
.modal-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.status { font-size: .88rem; min-height: 1.2em; }
.status.err { color: var(--accent); }

@media (max-width: 900px) {
  .grid { grid-template-columns: 1fr 1fr; }
  .grid .card, .grid .card:nth-child(-n+3) { grid-column: auto; }
  .grid .card:last-child { grid-column: 1 / -1; }
  .calc, .content { grid-template-columns: 1fr; }
  .slip { position: static; }
}
@media (max-width: 560px) {
  .grid { grid-template-columns: 1fr; }
  .grid .card:last-child { grid-column: auto; }
  .row { grid-template-columns: 1fr; }
  .top nav { display: none; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

/* Mobile sticky result */
.mini { display: none; }
@media (max-width: 900px) {
  .mini { position: fixed; left: 0; right: 0; bottom: 0; z-index: 10; background: var(--slip); color: var(--slip-ink); padding: 12px 20px calc(12px + env(safe-area-inset-bottom, 0px)); display: flex; align-items: center; justify-content: space-between; gap: 12px; box-shadow: 0 -6px 20px rgba(0,0,0,.18); border: 0; width: 100%; font: inherit; text-align: left; cursor: pointer; }
  .mini[hidden] { display: none !important; }
  .mini .k { font: 600 .7rem/1.2 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--slip-2); }
  .mini .v { font: 600 1.25rem/1 var(--mono); font-variant-numeric: tabular-nums; }
  .mini .go { font-size: .85rem; color: var(--slip-2); white-space: nowrap; }
  body[data-calc]:not([data-calc=""]) footer { padding-bottom: 96px; }
}

/* Screen-reader only text, and the off-screen honeypot field (visible to bots, not people) */
.sr-only, .hp { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.hp { left: -9999px; }