:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --text: #1c2430;
  --muted: #5b6573;
  --line: #e3e0d8;
  --primary: #0f6b5c;
  --primary-ink: #ffffff;
  --accent-bg: #eef6f3;
  --error: #b42318;
  --warn-bg: #fff4e5;
  --radius: 12px;
  --font: "Segoe UI", Tahoma, "Noto Sans Arabic", "Noto Kufi Arabic", "Geeza Pro", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12161b;
    --surface: #1a2027;
    --text: #e8eaed;
    --muted: #a3acb8;
    --line: #2c343d;
    --primary: #3fb49c;
    --primary-ink: #0b1411;
    --accent-bg: #16302a;
    --error: #ff8a80;
    --warn-bg: #3a2c16;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.8;
}

a { color: var(--primary); }

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 720px; }

.site-header { border-bottom: 1px solid var(--line); background: var(--surface); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 60px; }
.logo { font-weight: 800; font-size: 1.25rem; color: var(--text); text-decoration: none; }
.header-cta { font-weight: 600; text-decoration: none; }

section { padding: 48px 0; }
section + section { border-top: 1px solid var(--line); }

.hero { padding: 64px 0 56px; background: var(--accent-bg); }
h1 { font-size: clamp(1.7rem, 4.5vw, 2.6rem); line-height: 1.4; margin: 0 0 16px; }
h2 { font-size: clamp(1.35rem, 3.2vw, 1.8rem); line-height: 1.5; margin: 0 0 12px; }
h3 { font-size: 1.15rem; margin: 24px 0 8px; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 640px; margin: 0 0 24px; }
.muted { color: var(--muted); }

.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 999px;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  border: 2px solid var(--primary);
  cursor: pointer;
}
.btn.primary { background: var(--primary); color: var(--primary-ink); }
.btn.ghost { background: transparent; color: var(--primary); }
.btn.block { display: block; width: 100%; text-align: center; margin-top: 8px; }
.btn:disabled { opacity: 0.6; cursor: wait; }
.btn:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}

.bullets { padding-inline-start: 1.2em; }
.bullets li { margin-bottom: 6px; }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  margin-top: 16px;
}

fieldset { border: 0; padding: 0; margin: 0 0 16px; }
legend { font-weight: 700; margin-bottom: 8px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px 16px; }

label { display: block; font-weight: 600; margin-bottom: 12px; }
label small { display: block; font-weight: 400; color: var(--muted); font-size: 0.85rem; }
input, select, textarea {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 10px 12px;
  font: inherit;
  font-weight: 400;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
}
input[aria-invalid="true"] { border-color: var(--error); }
.field-error { display: block; color: var(--error); font-size: 0.9rem; font-weight: 600; min-height: 0; }

label.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; }
label.check input { width: auto; margin-top: 6px; }

.hp { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }

.result { border-color: var(--primary); }
.result-main { font-size: 1.3rem; margin: 0 0 8px; }
.result-main strong { font-size: 1.8rem; color: var(--primary); }
.result-list { padding-inline-start: 1.2em; margin: 0 0 8px; }
.warn { background: var(--warn-bg); padding: 10px 12px; border-radius: 8px; }
.note { color: var(--muted); font-size: 0.9rem; margin-bottom: 0; }
.after { background: var(--accent-bg); }

.form-status { margin: 12px 0 0; font-weight: 600; }
.form-status.ok { color: var(--primary); }
.form-status.err { color: var(--error); }

details { border-bottom: 1px solid var(--line); padding: 12px 0; }
summary { cursor: pointer; font-weight: 700; }

.prose { padding-top: 32px; padding-bottom: 48px; }

.site-footer { border-top: 1px solid var(--line); padding: 24px 0; color: var(--muted); font-size: 0.9rem; }
.tagline { font-weight: 400; font-size: 0.8rem; color: var(--muted); margin-inline-start: 8px; }