/* ============================================================
   UP4U Docs — تم روشن، هم‌رنگ up4u.ir
   ============================================================ */

:root {
  --docs-primary:        #0B63E5;
  --docs-primary-dark:   #0954c4;
  --docs-primary-soft:   #e0edff;
  --docs-bg:             #fafcff;
  --docs-bg-soft:        #ffffff;
  --docs-bg-hover:       #f0f7ff;
  --docs-text:           #1A2C3E;
  --docs-text-muted:     #5b6e8c;
  --docs-text-light:     #94a3b8;
  --docs-border:         #eef2f8;
  --docs-border-strong:  #cbd5e1;
  --docs-code-bg:        #f1f5f9;
  --docs-success:        #10b981;
  --docs-warning:        #f59e0b;
  --docs-danger:         #ef4444;
  --docs-radius:         12px;
  --docs-radius-lg:      20px;
  --docs-shadow:         0 4px 16px -8px rgba(11, 99, 229, 0.12);
  --docs-shadow-lg:      0 20px 40px -16px rgba(11, 99, 229, 0.2);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Vazirmatn', 'Segoe UI', system-ui, sans-serif;
  background: var(--docs-bg);
  color: var(--docs-text);
  line-height: 1.8;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--docs-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Header ---------- */
.docs-header {
  background: var(--docs-bg-soft);
  border-bottom: 1px solid var(--docs-border);
  padding: 14px 32px;
  display: flex;
  align-items: center;
  gap: 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
}

.docs-header-brand {
  font-size: 22px;
  font-weight: 800;
  color: var(--docs-text);
  text-decoration: none;
  white-space: nowrap;
}

.docs-header-brand span {
  color: var(--docs-primary);
  font-weight: 500;
  font-size: 16px;
  margin-right: 4px;
}

.docs-header-nav {
  display: flex;
  gap: 8px;
  flex: 1;
  overflow-x: auto;
}

.docs-header-nav a {
  padding: 8px 14px;
  border-radius: 8px;
  color: var(--docs-text-muted);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: 0.15s;
}

.docs-header-nav a:hover {
  background: var(--docs-bg-hover);
  color: var(--docs-primary);
}

.docs-header-nav a.active {
  background: var(--docs-primary-soft);
  color: var(--docs-primary);
  font-weight: 600;
}

.docs-search-wrap {
  position: relative;
  min-width: 220px;
}

.docs-search-wrap input {
  width: 100%;
  padding: 9px 36px 9px 14px;
  border: 1px solid var(--docs-border);
  border-radius: 8px;
  font: inherit;
  font-size: 13px;
  background: var(--docs-bg);
}

.docs-search-wrap input:focus {
  outline: none;
  border-color: var(--docs-primary);
}

.docs-search-wrap .search-icon {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--docs-text-light);
  font-size: 13px;
  pointer-events: none;
}

.docs-header-actions {
  display: flex;
  gap: 8px;
}

.btn-docs-ghost,
.btn-docs-primary {
  padding: 8px 18px;
  border-radius: 40px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: 0.15s;
  white-space: nowrap;
}

.btn-docs-ghost {
  background: var(--docs-bg);
  color: var(--docs-text);
  border: 1px solid var(--docs-border);
}

.btn-docs-ghost:hover {
  border-color: var(--docs-primary);
  color: var(--docs-primary);
  text-decoration: none;
}

.btn-docs-primary {
  background: var(--docs-primary);
  color: #fff;
  border: none;
}

.btn-docs-primary:hover {
  background: var(--docs-primary-dark);
  text-decoration: none;
}

/* ---------- Layout: sidebar + content ---------- */
.docs-layout {
  display: flex;
  flex: 1;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}

.docs-sidebar {
  width: 260px;
  background: var(--docs-bg-soft);
  border-left: 1px solid var(--docs-border);
  padding: 28px 16px;
  position: sticky;
  top: 68px;
  height: calc(100vh - 68px);
  overflow-y: auto;
  flex-shrink: 0;
}

.docs-sidebar-group {
  margin-bottom: 24px;
}

.docs-sidebar-group h4 {
  font-size: 11px;
  font-weight: 700;
  color: var(--docs-text-light);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
  padding: 0 12px;
}

.docs-sidebar-group ul {
  list-style: none;
  padding: 0;
}

.docs-sidebar-group li a {
  display: block;
  padding: 8px 12px;
  color: var(--docs-text-muted);
  font-size: 13.5px;
  text-decoration: none;
  border-radius: 8px;
  transition: 0.15s;
}

.docs-sidebar-group li a:hover {
  background: var(--docs-bg-hover);
  color: var(--docs-primary);
  text-decoration: none;
}

.docs-sidebar-group li a.active {
  background: var(--docs-primary-soft);
  color: var(--docs-primary);
  font-weight: 600;
}

.docs-content {
  flex: 1;
  padding: 40px 48px 60px;
  max-width: 900px;
  overflow-x: hidden;
}

/* ---------- Content typography ---------- */
.docs-content h1 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--docs-text);
  line-height: 1.3;
}

.docs-content .lead {
  font-size: 16px;
  color: var(--docs-text-muted);
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--docs-border);
}

.docs-content h2 {
  font-size: 22px;
  font-weight: 700;
  margin: 40px 0 16px;
  color: var(--docs-text);
}

.docs-content h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 28px 0 12px;
  color: var(--docs-text);
}

.docs-content p {
  margin-bottom: 16px;
  color: #374151;
}

.docs-content ul,
.docs-content ol {
  margin: 12px 0 20px;
  padding-right: 24px;
}

.docs-content li {
  margin-bottom: 8px;
  color: #374151;
}

.docs-content code {
  background: var(--docs-code-bg);
  padding: 2px 8px;
  border-radius: 4px;
  font-family: 'Courier New', monospace;
  font-size: 0.9em;
  direction: ltr;
  display: inline-block;
}

.docs-content pre {
  background: var(--docs-code-bg);
  padding: 16px;
  border-radius: 10px;
  overflow-x: auto;
  margin: 16px 0;
  direction: ltr;
  text-align: left;
}

.docs-content pre code {
  background: none;
  padding: 0;
}

/* ---------- Screenshots ---------- */
.docs-figure {
  margin: 24px 0;
  text-align: center;
}

.docs-figure img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--docs-border);
  box-shadow: var(--docs-shadow);
  display: block;
  margin: 0 auto;
  background: #fff;
}

.docs-figure figcaption {
  font-size: 13px;
  color: var(--docs-text-muted);
  margin-top: 10px;
  font-style: italic;
}

.docs-figure-compact img {
  max-width: 480px;
}

/* ---------- Callout boxes ---------- */
.docs-callout {
  border-radius: 12px;
  padding: 16px 20px;
  margin: 20px 0;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.docs-callout-icon {
  font-size: 20px;
  flex-shrink: 0;
  margin-top: 2px;
}

.docs-callout-body { flex: 1; }

.docs-callout-title {
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 4px;
}

.docs-callout p {
  margin: 0;
  font-size: 14px;
}

.docs-callout-info {
  background: var(--docs-primary-soft);
  color: var(--docs-primary-dark);
}

.docs-callout-success {
  background: #d1fae5;
  color: #065f46;
}

.docs-callout-warning {
  background: #fef3c7;
  color: #92400e;
}

.docs-callout-danger {
  background: #fee2e2;
  color: #991b1b;
}

/* ---------- Steps ---------- */
.docs-steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 20px 0;
}

.docs-steps li {
  counter-increment: step;
  position: relative;
  padding-right: 44px;
  margin-bottom: 16px;
  min-height: 32px;
}

.docs-steps li::before {
  content: counter(step);
  position: absolute;
  right: 0;
  top: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--docs-primary);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

/* ---------- Tables ---------- */
.docs-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--docs-border);
}

.docs-table th {
  background: var(--docs-bg-hover);
  color: var(--docs-text);
  padding: 12px;
  text-align: right;
  font-size: 13px;
  font-weight: 700;
}

.docs-table td {
  padding: 12px;
  border-top: 1px solid var(--docs-border);
  font-size: 13.5px;
  color: #374151;
}

/* ---------- Prev/Next navigation ---------- */
.docs-pagination {
  display: flex;
  gap: 12px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--docs-border);
}

.docs-pagination a {
  flex: 1;
  padding: 16px;
  background: var(--docs-bg-soft);
  border: 1px solid var(--docs-border);
  border-radius: 10px;
  text-decoration: none;
  color: var(--docs-text);
  transition: 0.15s;
}

.docs-pagination a:hover {
  border-color: var(--docs-primary);
  text-decoration: none;
}

.docs-pagination .label {
  font-size: 11px;
  color: var(--docs-text-muted);
  margin-bottom: 4px;
}

.docs-pagination .title {
  font-size: 14px;
  font-weight: 600;
  color: var(--docs-primary);
}

/* ---------- Table of contents (right sidebar in content) ---------- */
.docs-toc {
  background: var(--docs-bg-hover);
  border-right: 3px solid var(--docs-primary);
  border-radius: 8px;
  padding: 16px 20px;
  margin: 24px 0;
}

.docs-toc-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--docs-text);
  margin-bottom: 10px;
}

.docs-toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.docs-toc li {
  margin-bottom: 6px;
}

.docs-toc a {
  font-size: 13px;
  color: var(--docs-text-muted);
}

.docs-toc a:hover {
  color: var(--docs-primary);
}

/* ---------- Footer ---------- */
.docs-footer {
  background: var(--docs-bg-soft);
  border-top: 1px solid var(--docs-border);
  padding: 24px 32px;
  text-align: center;
  color: var(--docs-text-muted);
  font-size: 13px;
}

.docs-footer a {
  color: var(--docs-primary);
  margin: 0 8px;
}

/* ---------- Scroll to top ---------- */
.docs-scroll-top {
  position: fixed;
  bottom: 24px;
  left: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--docs-primary);
  color: #fff;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(11, 99, 229, 0.3);
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  z-index: 50;
}

.docs-scroll-top.visible { display: flex; }
.docs-scroll-top:hover { background: var(--docs-primary-dark); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .docs-header {
    flex-wrap: wrap;
    padding: 12px 16px;
    gap: 12px;
  }
  .docs-header-nav { display: none; }
  .docs-search-wrap { min-width: 100%; order: 3; }
  .docs-layout { flex-direction: column; }
  .docs-sidebar {
    width: 100%;
    position: static;
    height: auto;
    border-left: none;
    border-bottom: 1px solid var(--docs-border);
  }
  .docs-content { padding: 24px 16px 40px; }
  .docs-content h1 { font-size: 26px; }
  .docs-content h2 { font-size: 20px; }
}