:root {
  --bg: #eef1f6;
  --card: #ffffff;
  --text: #1e2329;
  --muted: #6b7280;
  --accent: #1572e8;
  --accent-dark: #0d5bbf;
  --sidebar: #1a2035;
  --sidebar-text: #b8c0cc;
  --border: #dde3ec;
  --success: #22c55e;
  --warn: #f59e0b;
  --danger: #ef4444;
  --shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
  --radius: 12px;
  --nav-width: 280px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 15px;
}

body.rtl { font-family: "Segoe UI", "Tahoma", "Arial", sans-serif; }

/* Layout */
.doc-layout {
  display: flex;
  min-height: 100vh;
}

.doc-sidebar {
  width: var(--nav-width);
  flex-shrink: 0;
  background: var(--sidebar);
  color: var(--sidebar-text);
  position: fixed;
  top: 0;
  bottom: 0;
  overflow-y: auto;
  z-index: 100;
  padding: 0 0 32px;
}

.doc-sidebar-inner { padding: 20px 0; }

.doc-brand {
  padding: 0 20px 18px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  margin-bottom: 12px;
}

.doc-brand h1 {
  margin: 0;
  font-size: 1.05rem;
  color: #fff;
  font-weight: 600;
  line-height: 1.35;
}

.doc-brand p {
  margin: 6px 0 0;
  font-size: 0.78rem;
  opacity: 0.75;
}

.doc-lang {
  display: flex;
  gap: 8px;
  padding: 0 20px 14px;
}

.doc-lang a {
  flex: 1;
  text-align: center;
  padding: 7px 10px;
  border-radius: 8px;
  font-size: 0.82rem;
  text-decoration: none;
  color: var(--sidebar-text);
  border: 1px solid rgba(255,255,255,.12);
  transition: 0.15s ease;
}

.doc-lang a:hover { background: rgba(255,255,255,.06); color: #fff; }

.doc-lang a.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

.doc-nav { list-style: none; margin: 0; padding: 0; }

.doc-nav > li > a {
  display: block;
  padding: 9px 20px;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: 0.88rem;
  border-inline-start: 3px solid transparent;
  transition: 0.12s ease;
}

.doc-nav > li > a:hover,
.doc-nav > li > a.active {
  background: rgba(255,255,255,.06);
  color: #fff;
  border-inline-start-color: var(--accent);
}

.doc-nav .sub {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  display: none;
}

.doc-nav li.open .sub { display: block; }

.doc-nav .sub a {
  display: block;
  padding: 6px 20px 6px 32px;
  font-size: 0.8rem;
  color: rgba(184,192,204,.85);
  text-decoration: none;
}

.doc-nav .sub a:hover { color: #fff; }

.doc-main {
  margin-inline-start: var(--nav-width);
  flex: 1;
  min-width: 0;
}

.doc-hero {
  background: linear-gradient(135deg, #1572e8 0%, #0d47a1 100%);
  color: #fff;
  padding: 40px 48px 36px;
}

.doc-hero h2 {
  margin: 0;
  font-size: 1.75rem;
  font-weight: 700;
}

.doc-hero p {
  margin: 12px 0 0;
  max-width: 640px;
  opacity: 0.92;
  font-size: 1rem;
}

.doc-content {
  max-width: 900px;
  padding: 32px 48px 80px;
}

/* Sections */
.section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin-bottom: 28px;
  box-shadow: var(--shadow);
}

.section > h2 {
  margin: 0 0 6px;
  font-size: 1.45rem;
  color: var(--accent-dark);
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: #e8f2ff;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 700;
  flex-shrink: 0;
}

.section > .lead {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 0.95rem;
}

.subsection { margin-top: 28px; padding-top: 24px; border-top: 1px dashed var(--border); }

.subsection:first-of-type { margin-top: 0; padding-top: 0; border-top: none; }

.subsection h3 {
  margin: 0 0 10px;
  font-size: 1.1rem;
  color: var(--text);
}

.path {
  display: inline-block;
  font-size: 0.82rem;
  background: #f0f4f8;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
  margin-bottom: 14px;
  color: var(--muted);
}

.path strong { color: var(--accent); }

.steps {
  counter-reset: step;
  list-style: none;
  margin: 16px 0;
  padding: 0;
}

.steps li {
  position: relative;
  padding: 0 0 16px 44px;
  margin: 0;
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  inset-inline-start: 0;
  top: 2px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.badge {
  display: inline-block;
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 4px;
  background: #e8f4ff;
  color: var(--accent);
  font-weight: 600;
  vertical-align: middle;
}

.badge.pkg { background: #fff7ed; color: #c2410c; }

.note, .tip, .warn-box {
  padding: 14px 16px;
  border-radius: 8px;
  margin: 16px 0;
  font-size: 0.92rem;
}

.note { background: #fffbeb; border-inline-start: 4px solid var(--warn); }
.tip { background: #ecfdf5; border-inline-start: 4px solid var(--success); }
.warn-box { background: #fef2f2; border-inline-start: 4px solid var(--danger); }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 14px 0;
}

th, td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: start;
}

th { background: #f8fafc; font-weight: 600; }

code, kbd {
  background: #f1f5f9;
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 0.86em;
}

ul.clean { margin: 10px 0; padding-inline-start: 1.3rem; }
ul.clean li { margin-bottom: 6px; }

.doc-foot {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 24px;
  border-top: 1px solid var(--border);
}

@media (max-width: 900px) {
  .doc-sidebar {
    position: relative;
    width: 100%;
    max-height: none;
  }
  .doc-main { margin-inline-start: 0; }
  .doc-layout { flex-direction: column; }
  .doc-hero, .doc-content { padding-inline: 24px; }
}