/* ==================== Documentation Pages ==================== */
:root {
  --primary: #667eea;
  --primary-dark: #5a67d8;
  --primary-light: #f0f0ff;
  --secondary: #764ba2;
  --text: #1a1a1a;
  --text-secondary: #666;
  --bg: #fafbff;
  --bg-alt: #f5f3ff;
  --border: #e8e8f0;
  --white: #ffffff;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --max-width: 960px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  padding-top: 64px;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
code {
  background: var(--primary-light);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.9em;
  color: var(--primary-dark);
}
img { max-width: 100%; }

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}
.logo-icon { font-size: 22px; }
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--primary); text-decoration: none; }
.nav-cta {
  background: var(--primary) !important;
  color: var(--white) !important;
  padding: 6px 16px;
  border-radius: 8px;
  transition: background 0.2s !important;
}
.nav-cta:hover { background: var(--primary-dark) !important; text-decoration: none; }
.breadcrumb {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  padding-top: 32px;
}
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--primary); }

/* Doc Header */
.doc-header {
  padding: 32px 0 48px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 48px;
}
.doc-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  padding: 4px 14px;
  border-radius: 16px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}
.doc-header h1 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.doc-header .subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Section */
.doc-section {
  margin-bottom: 48px;
}
.doc-section h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--primary-light);
  display: flex;
  align-items: center;
  gap: 8px;
}
.doc-section h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 24px 0 12px;
  color: var(--primary-dark);
}
.doc-section p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 16px;
}
.doc-section ul, .doc-section ol {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 16px;
  padding-left: 24px;
}
.doc-section li {
  margin-bottom: 8px;
}

/* Steps */
.steps {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin: 16px 0;
}
.step {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
}
.step:last-child { margin-bottom: 0; }
.step-num {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
}
.step-content {
  flex: 1;
  padding-top: 4px;
}
.step-content strong { color: var(--text); }
.step-content p {
  margin: 4px 0 0;
  font-size: 15px;
}

/* Tip Box */
.tip {
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 20px;
  margin: 16px 0;
  font-size: 15px;
  color: var(--text-secondary);
}
.tip strong { color: var(--primary-dark); }

/* Table */
.doc-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  margin: 16px 0;
}
.doc-table th, .doc-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 15px;
}
.doc-table th {
  background: var(--primary-light);
  font-weight: 600;
  color: var(--text);
}
.doc-table tr:last-child td { border-bottom: none; }

/* Screenshot */
.screenshot {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px;
  margin: 16px 0;
  text-align: center;
}
.screenshot img {
  border-radius: 8px;
  width: 100%;
}
.screenshot .caption {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 8px;
}

/* Back Link */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
  font-size: 15px;
  color: var(--primary);
  font-weight: 500;
}
.back-link:hover { text-decoration: none; }

/* Footer */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
  margin-top: 48px;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
}
.footer-links {
  display: flex;
  gap: 24px;
}
.footer-links a {
  color: var(--text-secondary);
  font-size: 14px;
}
.footer-copy {
  color: var(--text-secondary);
  font-size: 13px;
}

/* Mobile */
@media (max-width: 768px) {
  body { padding-top: 56px; }
  .nav-links { display: none; }
  .doc-header h1 { font-size: 28px; }
  .footer-inner { flex-direction: column; gap: 16px; text-align: center; }
}