:root {
  --bg: #f6f7fb;
  --card: #ffffff;
  --text: #1d2433;
  --muted: #5d6676;
  --primary: #0f7b6c;
  --primary-dark: #0b5e53;
  --border: #e3e6ee;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151c;
    --card: #1b2029;
    --text: #e8ebf2;
    --muted: #9aa3b2;
    --primary: #2bb59f;
    --primary-dark: #22917f;
    --border: #2a303c;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Tajawal", "Segoe UI", Tahoma, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

header {
  background: var(--primary);
  color: #fff;
  padding: 14px 16px;
}

header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
header a { color: #fff; text-decoration: none; }
header .logo { font-size: 1.3rem; font-weight: 700; }
header nav a { margin-inline-start: 14px; opacity: .9; }
header nav a:hover { opacity: 1; text-decoration: underline; }

.wrap { max-width: 900px; margin: 0 auto; }

main { padding: 24px 16px; }

h1 { font-size: 1.7rem; margin: 0 0 8px; }
h2 { font-size: 1.25rem; }
.lead { color: var(--muted); margin-top: 0; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

a.card { color: inherit; text-decoration: none; transition: transform .15s, border-color .15s; }
a.card:hover { transform: translateY(-3px); border-color: var(--primary); }
a.card .icon { font-size: 2rem; }
a.card h2 { margin: 8px 0 4px; }
a.card p { margin: 0; color: var(--muted); }

label { display: block; font-weight: 600; margin: 12px 0 6px; }

input, select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

.row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }

button {
  margin-top: 16px;
  width: 100%;
  padding: 12px;
  border: 0;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}
button:hover { background: var(--primary-dark); }

.result {
  margin-top: 18px;
  padding: 16px;
  border-radius: 10px;
  background: var(--bg);
  border: 1px dashed var(--primary);
  display: none;
}
.result.show { display: block; }
.result .big { font-size: 1.4rem; font-weight: 700; color: var(--primary); }

/* مكان الإعلان — يُستبدل بكود Google AdSense بعد القبول */
.ad-slot {
  margin: 24px 0;
  min-height: 100px;
  border: 1px dashed var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: .85rem;
}

.article { margin-top: 24px; }
.article p, .article li { color: var(--muted); }

footer {
  text-align: center;
  padding: 24px 16px;
  color: var(--muted);
  font-size: .9rem;
  border-top: 1px solid var(--border);
}
footer a { color: var(--muted); margin: 0 8px; }

@media (max-width: 500px) {
  .row { grid-template-columns: 1fr; }
  header nav a { margin-inline-start: 0; margin-inline-end: 12px; }
}