:root {
  --green: #1D9E75;
  --green-light: #EAF3DE;
  --green-dark: #27500A;
  --green-mid: #3B6D11;
  --text: #1a1a1a;
  --text-muted: #6b7280;
  --bg: #ffffff;
  --bg2: #f9fafb;
  --bg3: #f3f4f6;
  --border: #e5e7eb;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Segoe UI', Tahoma, sans-serif; color: var(--text); background: var(--bg2); font-size: 15px; }
body.rtl { direction: rtl; font-family: 'Segoe UI', Tahoma, Arial, sans-serif; }

/* NAV */
nav { background: var(--bg); border-bottom: 1px solid var(--border); padding: 0 24px; display: flex; align-items: center; justify-content: space-between; height: 60px; position: sticky; top: 0; z-index: 100; }
.logo { font-size: 22px; font-weight: 700; color: var(--green); text-decoration: none; }
.logo span { color: var(--text); }
.nav-links { display: flex; gap: 20px; align-items: center; }
.nav-links a { text-decoration: none; color: var(--text-muted); font-size: 14px; transition: color 0.2s; }
.nav-links a:hover { color: var(--green); }
.lang-switcher { display: flex; gap: 6px; }
.lang-btn { padding: 4px 10px; border-radius: 20px; border: 1px solid var(--border); background: var(--bg); font-size: 12px; cursor: pointer; text-decoration: none; color: var(--text-muted); transition: all 0.2s; }
.lang-btn.active, .lang-btn:hover { background: var(--green); color: white; border-color: var(--green); }
.nav-menu { display: flex; gap: 4px; align-items: center; }

/* AD SLOTS */
.ad-slot { background: var(--bg3); border: 1px dashed var(--border); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; color: var(--text-muted); font-size: 12px; text-align: center; }
.ad-top { height: 90px; margin: 0; width: 100%; }
.ad-sidebar { min-height: 400px; width: 160px; flex-shrink: 0; }
.ad-bottom { height: 250px; margin: 24px 0 0; }
.ad-inline { height: 100px; margin: 20px 0; }

/* HERO */
.hero { background: linear-gradient(135deg, var(--green-light) 0%, #d1fae5 100%); padding: 48px 24px; text-align: center; }
.hero h1 { font-size: 32px; font-weight: 700; margin-bottom: 12px; color: var(--green-dark); }
.hero p { font-size: 16px; color: var(--green-mid); margin-bottom: 24px; }
.search-box { max-width: 500px; margin: 0 auto; display: flex; gap: 8px; }
.search-box input { flex: 1; padding: 12px 16px; border: 1px solid var(--border); border-radius: var(--radius); font-size: 15px; outline: none; }
.search-box input:focus { border-color: var(--green); }
.btn-green { background: var(--green); color: white; border: none; padding: 12px 24px; border-radius: var(--radius); font-size: 15px; cursor: pointer; font-weight: 600; transition: background 0.2s; }
.btn-green:hover { background: var(--green-mid); }

/* MAIN LAYOUT */
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.page-layout { display: flex; gap: 24px; padding: 24px 0; }
.main-content { flex: 1; min-width: 0; }
.sidebar { width: 160px; flex-shrink: 0; }

/* CATEGORIES */
.section { margin: 32px 0; }
.section-title { font-size: 18px; font-weight: 700; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
.section-title::after { content: ''; flex: 1; height: 1px; background: var(--border); }
.cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; }
.cat-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; text-align: center; text-decoration: none; color: var(--text); transition: all 0.2s; box-shadow: var(--shadow); }
.cat-card:hover { border-color: var(--green); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(29,158,117,0.15); }
.cat-card .emoji { font-size: 28px; margin-bottom: 8px; }
.cat-card .name { font-size: 13px; font-weight: 600; }
.cat-card .count { font-size: 11px; color: var(--text-muted); margin-top: 4px; }
.badge-hot { background: #fee2e2; color: #dc2626; font-size: 10px; padding: 2px 6px; border-radius: 20px; }

/* CALC LIST */
.calc-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; }
.calc-item { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; text-decoration: none; color: var(--text); display: flex; align-items: center; gap: 10px; transition: all 0.2s; }
.calc-item:hover { border-color: var(--green); background: var(--green-light); }
.calc-item .icon { font-size: 20px; }
.calc-item .info .title { font-size: 13px; font-weight: 600; }
.calc-item .info .cat { font-size: 11px; color: var(--text-muted); }

/* CALCULATOR PAGE */
.calc-page { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.calc-page h1 { font-size: 22px; font-weight: 700; margin-bottom: 6px; }
.calc-page .desc { color: var(--text-muted); font-size: 14px; margin-bottom: 24px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: 13px; font-weight: 600; color: var(--text-muted); }
.form-group input, .form-group select { padding: 10px 14px; border: 1px solid var(--border); border-radius: 8px; font-size: 15px; outline: none; background: var(--bg); color: var(--text); transition: border-color 0.2s; }
.form-group input:focus, .form-group select:focus { border-color: var(--green); }
.calc-btn { background: var(--green); color: white; border: none; padding: 13px 28px; border-radius: var(--radius); font-size: 16px; font-weight: 600; cursor: pointer; margin-top: 20px; width: 100%; transition: background 0.2s; }
.calc-btn:hover { background: var(--green-mid); }
.results { margin-top: 24px; background: var(--green-light); border-radius: var(--radius); padding: 20px; display: none; }
.results.show { display: block; }
.results h3 { font-size: 16px; font-weight: 700; color: var(--green-dark); margin-bottom: 16px; }
.result-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; }
.result-item { background: var(--bg); border-radius: 8px; padding: 14px; text-align: center; }
.result-item .label { font-size: 12px; color: var(--text-muted); margin-bottom: 6px; }
.result-item .value { font-size: 20px; font-weight: 700; color: var(--green); }
.result-item.main .value { font-size: 28px; color: var(--green-dark); }

/* BREADCRUMB */
.breadcrumb { font-size: 13px; color: var(--text-muted); margin-bottom: 16px; }
.breadcrumb a { color: var(--green); text-decoration: none; }
.breadcrumb span { color: var(--text); }

/* RELATED */
.related { margin-top: 24px; }
.related h3 { font-size: 16px; font-weight: 700; margin-bottom: 12px; }
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 8px; }
.related-item { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 10px 14px; text-decoration: none; color: var(--text); font-size: 13px; display: flex; align-items: center; gap: 8px; transition: all 0.2s; }
.related-item:hover { border-color: var(--green); color: var(--green); }

/* INFO BOX */
.info-box { background: var(--bg3); border-left: 3px solid var(--green); border-radius: 0 var(--radius) var(--radius) 0; padding: 16px; margin-top: 20px; font-size: 14px; line-height: 1.7; }
.info-box h4 { font-size: 14px; font-weight: 700; margin-bottom: 8px; color: var(--green-dark); }

/* FOOTER */
footer { background: var(--text); color: #9ca3af; padding: 40px 24px 24px; margin-top: 48px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 32px; max-width: 1100px; margin: 0 auto 32px; }
.footer-col h4 { color: white; font-size: 14px; font-weight: 700; margin-bottom: 12px; }
.footer-col a { display: block; color: #9ca3af; text-decoration: none; font-size: 13px; margin-bottom: 6px; }
.footer-col a:hover { color: var(--green); }
.footer-bottom { text-align: center; font-size: 12px; border-top: 1px solid #374151; padding-top: 20px; max-width: 1100px; margin: 0 auto; }

/* MOBILE */
@media (max-width: 768px) {
  .form-grid { grid-template-columns: 1fr; }
  .page-layout { flex-direction: column; }
  .sidebar { width: 100%; }
  .ad-sidebar { width: 100%; min-height: 100px; }
  nav { padding: 0 12px; }
  .nav-links { display: none; }
  .hero h1 { font-size: 22px; }
}