@font-face{font-family:"NotoSansAr";src:url(../fonts/NotoSansArabic.woff2) format("woff2");font-weight:100 900;font-display:swap}
@font-face{font-family:"NotoKufiAr";src:url(../fonts/NotoKufiArabic.woff2) format("woff2");font-weight:100 900;font-display:swap}
@font-face{font-family:"PlexSans";src:url(../fonts/IBMPlexSans.woff2) format("woff2");font-weight:100 700;font-display:swap;unicode-range:U+0000-00FF,U+2013-2026,U+00D7,U+2192}

/* ===== Palette (verified by tests/contrast.py) ===== */
:root{
  --bg:#FAF8F1; --surface:#FFFFFF; --surface-2:#EEF5EC;
  --text:#14231A; --muted:#2E4436;
  --primary:#17572F; --on-primary:#FFFFFF;
  --accent-bg:#FCE3CC; --on-accent:#5A2500; --accent-text:#7F3600;
  --red:#C2410C; --border:#7A8F80; --focus:#7F3600;
  --code-bg:#F3EFE3;
  color-scheme:light;
}
:root[data-theme="dark"]{
  --bg:#0E1912; --surface:#15241A; --surface-2:#1C3123;
  --text:#EEF4EE; --muted:#C9D9CC;
  --primary:#9EE0B0; --on-primary:#0B1A10;
  --accent-bg:#4A2410; --on-accent:#FFE3CF; --accent-text:#FFC59E;
  --red:#FF8A5C; --border:#5E7A66; --focus:#FFC59E;
  --code-bg:#1F2E23;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{font-size:112.5%;scroll-behavior:smooth;scroll-padding-top:5rem}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
body{margin:0;background:var(--bg);color:var(--text);font-family:"PlexSans","NotoSansAr",system-ui,sans-serif;line-height:1.9;font-size:1rem;text-rendering:optimizeLegibility}
h1,h2,h3,h4{font-family:"PlexSans","NotoKufiAr","NotoSansAr",sans-serif;line-height:1.5;color:var(--primary);margin:0 0 .6em}
h1{font-size:clamp(1.6rem,4vw,2.3rem)} h2{font-size:clamp(1.35rem,3vw,1.75rem)} h3{font-size:1.2rem}
p{margin:0 0 1em;max-width:75ch}
a{color:var(--primary);text-decoration-thickness:.08em;text-underline-offset:.25em}
a:hover{text-decoration-thickness:.15em}
:focus-visible{outline:3px solid var(--focus);outline-offset:3px;border-radius:4px}
[lang="en"],.en,code,.sym{font-family:"PlexSans",system-ui,sans-serif}
code,.sym{background:var(--code-bg);padding:.05em .4em;border-radius:6px;font-size:.92em;direction:ltr;unicode-bidi:isolate;display:inline-block}
.en{direction:ltr;unicode-bidi:isolate;color:var(--muted)}
.skip{position:absolute;inset-inline-start:1rem;top:-4rem;background:var(--primary);color:var(--on-primary);padding:.6rem 1rem;border-radius:8px;z-index:99}
.skip:focus{top:1rem}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* header */
header.site{position:sticky;top:0;z-index:20;background:var(--surface);border-bottom:1px solid var(--border);box-shadow:0 1px 0 var(--surface-2)}
.bar{max-width:1200px;margin:auto;display:flex;align-items:center;gap:1rem;padding:.5rem 1rem;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:.6rem;font-family:"NotoKufiAr",sans-serif;font-weight:700;color:var(--primary);text-decoration:none;font-size:1.05rem}
.brand svg{width:40px;height:40px;flex:none}
nav.main{flex:1}
nav.main ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.15rem}
nav.main a{display:block;padding:.3rem .65rem;border-radius:8px;text-decoration:none;color:var(--text);font-size:.92rem}
nav.main a:hover,nav.main a[aria-current="true"]{background:var(--surface-2);color:var(--primary)}
.btn{font:inherit;cursor:pointer;border:2px solid var(--primary);background:var(--primary);color:var(--on-primary);border-radius:10px;padding:.4rem 1rem;min-height:44px}
.btn.ghost{background:transparent;color:var(--primary)}
.btn:hover{filter:brightness(1.08)}
#themeToggle{min-width:44px}
#menuToggle{display:none}
@media (max-width:900px){
  #menuToggle{display:inline-block}
  nav.main{flex-basis:100%;display:none}
  nav.main.open{display:block}
  nav.main ul{flex-direction:column}
  nav.main a{padding:.6rem .8rem;font-size:1rem}
}

main{max-width:1200px;margin:auto;padding:1rem}
section.block{padding:2.2rem 0;border-bottom:1px solid var(--surface-2)}
.hero{display:grid;grid-template-columns:1.4fr 1fr;gap:2rem;align-items:center;padding:2rem 0}
@media (max-width:800px){.hero{grid-template-columns:1fr}}
.hero .lead{font-size:1.15rem;color:var(--muted)}
.hero-art{background:var(--surface-2);border-radius:24px;padding:1rem;border-top:6px solid var(--red)}
.hero-art svg{width:100%;height:auto;display:block}
.tagline{display:inline-block;background:var(--accent-bg);color:var(--on-accent);padding:.15rem .8rem;border-radius:999px;font-size:.9rem;margin-bottom:.7rem}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1rem}
.card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:1rem 1.2rem;border-inline-start:5px solid var(--primary)}
.card.accent{border-inline-start-color:var(--red)}
.card h3{margin-bottom:.3em}
.stat{font-size:2rem;font-weight:700;color:var(--primary);font-family:"PlexSans",sans-serif;line-height:1.2}
.facts{display:grid;grid-template-columns:max-content 1fr;gap:.3rem 1rem;margin:0}
.facts dt{font-weight:700;color:var(--primary)} .facts dd{margin:0}
.note{background:var(--accent-bg);color:var(--on-accent);border-radius:12px;padding:.8rem 1rem;margin:1rem 0}
.note a{color:var(--on-accent)}
.muted{color:var(--muted)}

/* filters + tables */
.filters{display:flex;flex-wrap:wrap;gap:.8rem;align-items:end;margin:1rem 0;background:var(--surface);padding:1rem;border-radius:14px;border:1px solid var(--border)}
.filters label{display:flex;flex-direction:column;font-size:.92rem;gap:.2rem;font-weight:600}
input,select{font:inherit;color:var(--text);background:var(--bg);border:2px solid var(--border);border-radius:10px;padding:.35rem .6rem;min-height:44px}
input[type=search]{min-width:min(320px,80vw)}
input[type=checkbox]{min-height:auto;width:1.2rem;height:1.2rem;accent-color:var(--primary)}
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:14px;background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:.95rem}
caption{text-align:start;padding:.6rem 1rem;color:var(--muted);font-size:.9rem}
th,td{padding:.6rem .8rem;text-align:start;vertical-align:top;border-bottom:1px solid var(--surface-2)}
thead th{background:var(--surface-2);color:var(--primary);position:sticky;top:0}
tbody tr:hover{background:var(--surface-2)}
.linkbtn{font:inherit;background:none;border:0;color:var(--primary);text-decoration:underline;text-underline-offset:.25em;cursor:pointer;padding:0;text-align:start}
.badge{display:inline-block;border-radius:999px;padding:0 .6rem;font-size:.82rem;border:1px solid var(--border);white-space:nowrap}
.badge.gi{background:var(--accent-bg);color:var(--on-accent);border-color:transparent}
.badge.ok{background:var(--surface-2);color:var(--primary);border-color:transparent}

dialog{max-width:min(760px,94vw);border:1px solid var(--border);border-radius:18px;padding:0;background:var(--surface);color:var(--text)}
dialog::backdrop{background:rgba(0,0,0,.55)}
dialog .dhead{display:flex;justify-content:space-between;align-items:start;gap:1rem;padding:1rem 1.2rem;border-bottom:4px solid var(--red);background:var(--surface-2)}
dialog .dbody{padding:1rem 1.2rem;max-height:70vh;overflow:auto}
details{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:.6rem 1rem;margin:.6rem 0}
summary{cursor:pointer;font-weight:700;color:var(--primary);min-height:44px;display:list-item;padding-top:.3rem}
.off{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1rem}
.off h4{margin:.5rem 0 .2rem;color:var(--accent-text)}
.bars{list-style:none;padding:0;margin:0}
.bars li{margin:.35rem 0}
.bars .pct{font-weight:700;font-family:"PlexSans",sans-serif;direction:ltr;unicode-bidi:isolate}
.meter{height:8px;background:var(--surface-2);border-radius:99px;overflow:hidden;margin-top:.2rem}
.meter span{display:block;height:100%;background:linear-gradient(to left,var(--primary),var(--red))}

/* calculator */
.calc{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
@media (max-width:800px){.calc{grid-template-columns:1fr}}
fieldset{border:1px solid var(--border);border-radius:14px;padding:.8rem 1rem;background:var(--surface);margin:0}
legend{font-weight:700;color:var(--primary);padding:0 .4rem;font-size:1.1rem}
.grid2{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:.6rem}
.grid2 label{display:flex;flex-direction:column;font-size:.9rem;gap:.15rem}
.chk{flex-direction:row!important;align-items:center;gap:.4rem!important}
.calc h3{font-size:1rem;margin:.8rem 0 .3rem;color:var(--accent-text)}
.actions{display:flex;flex-wrap:wrap;gap:.6rem;margin:1rem 0;align-items:end}
#calcOut{min-height:3rem}
.vids{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1rem}
footer{padding:2rem 1rem;text-align:center;color:var(--muted);border-top:1px solid var(--border);background:var(--surface)}
@media print{header.site,.filters,#themeToggle{display:none}}
/* overflow guards for small screens */
select,input{max-width:100%}
.filters label,.actions label{max-width:100%;min-width:0}
#presetSel{width:min(36rem,100%)}
dd,td,.card,p{overflow-wrap:anywhere}
.facts{grid-template-columns:minmax(6rem,max-content) minmax(0,1fr)}
@media (max-width:520px){.facts{grid-template-columns:1fr}.facts dd{margin-bottom:.5rem}}