:root {
  --primary: #0AB36A;
  --primary-dark: #067041;
  --accent: #ff6b35;
  --bg: #f8f9fa;
  --card-bg: #ffffff;
  --text: #212529;
  --text-muted: #6c757d;
  --border: #dee2e6;
  --nav-bg: #ffffff;
  --footer-bg: #1a1a2e;
}

[data-theme="dark"] {
  --bg: #0f0f1a;
  --card-bg: #1a1a2e;
  --text: #e9ecef;
  --text-muted: #adb5bd;
  --border: #2d2d44;
  --nav-bg: #1a1a2e;
}

body {
  font-family: 'Poppins', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  transition: background-color 0.3s, color 0.3s;
}

.navbar {
  background-color: var(--nav-bg) !important;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--primary) !important;
}

.nav-link {
  font-weight: 500;
  color: var(--text) !important;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary) !important;
}

.hero-section {
  background: linear-gradient(135deg, #0AB36A 0%, #067041 50%, #1a1a2e 100%);
  color: #fff;
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: rgba(255,255,255,0.05);
  border-radius: 50%;
}

.hero-section h1 {
  font-weight: 700;
  font-size: 2.2rem;
  line-height: 1.3;
}

.btn-download {
  background: var(--accent) !important;
  border: none !important;
  color: #fff !important;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1.1rem;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 15px rgba(255,107,53,0.4) !important;
  display: inline-block;
  text-decoration: none;
}

.btn-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255,107,53,0.5) !important;
  color: #fff !important;
  background: #e55a2b !important;
}

.info-table {
  background: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  border: 1px solid var(--border);
}

.info-table table { margin-bottom: 0; }

.info-table th {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  width: 40%;
  padding: 14px 20px;
}

.info-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text);
}

.content-card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 2rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border);
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
}

.content-card h2 {
  color: var(--primary);
  font-weight: 700;
  font-size: 1.6rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 3px solid var(--accent);
  display: inline-block;
}

.content-card h3 {
  font-weight: 600;
  font-size: 1.2rem;
  margin-top: 1.5rem;
  color: var(--text);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary), #067041);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.toc-sidebar {
  position: sticky;
  top: 80px;
  background: var(--card-bg);
  border-radius: 12px;
  padding: 1.5rem;
  border: 1px solid var(--border);
  max-height: calc(100vh - 100px);
  overflow-y: auto;
}

.toc-sidebar h5 {
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 1rem;
}

.toc-sidebar .nav-link {
  color: var(--text-muted) !important;
  font-size: 0.9rem;
  padding: 0.4rem 0;
  border-left: 2px solid transparent;
  padding-left: 12px;
}

.toc-sidebar .nav-link:hover,
.toc-sidebar .nav-link.active {
  color: var(--primary) !important;
  border-left-color: var(--primary);
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 0.75rem;
  overflow: hidden;
  background: var(--card-bg);
}

.faq-item .accordion-button {
  background: var(--card-bg);
  color: var(--text);
  font-weight: 600;
}

.faq-item .accordion-button:not(.collapsed) {
  background: var(--primary);
  color: #fff;
}

.pros-cons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 768px) {
  .pros-cons { grid-template-columns: 1fr; }
  .hero-section h1 { font-size: 1.6rem; }
}

.pros-box, .cons-box {
  padding: 1.5rem;
  border-radius: 12px;
}

.pros-box {
  background: rgba(40,167,69,0.1);
  border: 1px solid rgba(40,167,69,0.3);
}

.cons-box {
  background: rgba(220,53,69,0.1);
  border: 1px solid rgba(220,53,69,0.3);
}

.author-box {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  gap: 1rem;
  align-items: center;
}

.author-avatar {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.8rem;
  flex-shrink: 0;
}

.breadcrumb-section {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
}

.blog-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
  height: 100%;
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.blog-card-body { padding: 1.25rem; }
.blog-card .badge { font-size: 0.75rem; }

.site-footer {
  background: var(--footer-bg);
  color: #adb5bd;
  padding: 3rem 0 1.5rem;
  margin-top: 3rem;
}

.site-footer h5 {
  color: #fff;
  font-weight: 600;
  margin-bottom: 1rem;
}

.site-footer a {
  color: #adb5bd;
  text-decoration: none;
}

.site-footer a:hover { color: var(--accent); }

.search-box { max-width: 220px; }

.search-box .form-control {
  border-radius: 50px 0 0 50px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text);
  font-size: 0.85rem;
}

.search-box .btn {
  border-radius: 0 50px 50px 0;
  background: var(--primary);
  border-color: var(--primary);
}

.step-number {
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin-right: 0.75rem;
  flex-shrink: 0;
}

.related-posts .blog-card { font-size: 0.9rem; }

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  cursor: pointer;
  transition: background 0.2s;
}

.theme-toggle:hover { background: var(--border); }

.page-header {
  background: linear-gradient(135deg, var(--primary), #067041);
  color: #fff;
  padding: 3rem 0;
}

.contact-form .form-control,
.contact-form .form-select {
  background: var(--card-bg);
  border-color: var(--border);
  color: var(--text);
}

.sitemap-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
}

.sitemap-list a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}

.sitemap-list a:hover { text-decoration: underline; }

.navbar-collapse.collapse,
.collapse.show,
.collapsing {
  visibility: visible !important;
}