/* ===== CSS Variables ===== */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-card: #16161f;
  --bg-card-hover: #1c1c28;
  --border: #252530;
  --text-primary: #f0f0f5;
  --text-secondary: #8888a0;
  --text-muted: #5a5a72;
  --accent: #6c5ce7;
  --accent-glow: rgba(108, 92, 231, 0.3);
  --gradient-1: linear-gradient(135deg, #6c5ce7, #a855f7);
  --gradient-2: linear-gradient(135deg, #a855f7, #ec4899);
  --gradient-3: linear-gradient(135deg, #3b82f6, #6c5ce7);
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --transition: 0.2s ease;
}

/* ===== Reset ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* ===== Container ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  font-size: 1.4rem;
  font-weight: 700;
  background: var(--gradient-2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  cursor: pointer;
}
.logo-icon { font-size: 1.5rem; margin-right: 6px; }
.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--text-primary); }
.nav-links a.active { color: var(--accent); }
.header-actions { display: flex; gap: 12px; align-items: center; }
.mobile-toggle { display: none; background: none; border: none; color: var(--text-primary); font-size: 1.5rem; cursor: pointer; }

/* ===== Hero ===== */
.hero {
  text-align: center;
  padding: 80px 24px 60px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  position: relative;
}
.hero h1 .gradient-text { background: var(--gradient-2); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p {
  color: var(--text-secondary);
  font-size: 1.15rem;
  max-width: 600px;
  margin: 0 auto 32px;
  position: relative;
}

/* ===== Search ===== */
.search-box {
  position: relative;
  max-width: 560px;
  margin: 0 auto;
}
.search-box input {
  width: 100%;
  padding: 16px 56px 16px 24px;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: 1.05rem;
  transition: all var(--transition);
  outline: none;
}
.search-box input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
}
.search-box input::placeholder { color: var(--text-muted); }
.search-icon {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.2rem;
  color: var(--text-muted);
  pointer-events: none;
}
.search-results {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: none;
  z-index: 50;
  box-shadow: var(--shadow);
}
.search-results.active { display: block; }
.search-result-item {
  padding: 12px 20px;
  cursor: pointer;
  transition: background var(--transition);
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-result-item:hover { background: var(--bg-card-hover); }
.search-result-item .tool-icon { font-size: 1.5rem; }
.search-result-item .tool-name { font-weight: 600; }
.search-result-item .tool-cat { color: var(--text-muted); font-size: 0.85rem; margin-left: auto; }

/* ===== Stats Bar ===== */
.stats-bar {
  display: flex;
  justify-content: center;
  gap: 48px;
  padding: 32px 0 48px;
  flex-wrap: wrap;
}
.stat-item { text-align: center; }
.stat-number {
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-3);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { color: var(--text-muted); font-size: 0.9rem; margin-top: 4px; }

/* ===== Section ===== */
.section { padding: 48px 0; }
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
}
.section-title {
  font-size: 1.5rem;
  font-weight: 700;
}
.section-title .emoji { margin-right: 8px; }
.section-link {
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 600;
  transition: opacity var(--transition);
}
.section-link:hover { opacity: 0.8; }

/* ===== Category Grid ===== */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.cat-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
}
.cat-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(108, 92, 231, 0.15);
}
.cat-icon { font-size: 2rem; }
.cat-info h3 { font-size: 1rem; font-weight: 600; }
.cat-info span { color: var(--text-muted); font-size: 0.85rem; }

/* ===== Tool Cards ===== */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}
.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.tool-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(108, 92, 231, 0.2);
}
.tool-card.featured::before {
  content: 'Featured';
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--gradient-2);
  border-radius: 20px;
  color: white;
}
.tool-card-header {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 12px;
}
.tool-card-icon {
  width: 48px;
  height: 48px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}
.tool-card-meta { flex: 1; }
.tool-card-name { font-size: 1.1rem; font-weight: 700; }
.tool-card-pricing { font-size: 0.85rem; color: var(--accent); font-weight: 600; }
.tool-card-summary {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.tool-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.tool-rating { display: flex; align-items: center; gap: 4px; }
.tool-rating .stars { color: var(--warning); font-size: 0.85rem; }
.tool-rating .score { font-weight: 700; font-size: 0.9rem; }
.tool-card-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tool-tag {
  padding: 4px 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ===== Tool Detail ===== */
.tool-detail { padding: 48px 0; }
.breadcrumb {
  display: flex;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 32px;
}
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--text-muted); }
.tool-hero {
  display: flex;
  gap: 32px;
  margin-bottom: 48px;
  align-items: flex-start;
}
.tool-hero-icon {
  width: 80px;
  height: 80px;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  flex-shrink: 0;
}
.tool-hero-info h1 { font-size: 2rem; font-weight: 800; margin-bottom: 8px; }
.tool-hero-info .pricing-badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 12px;
}
.pricing-free { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.pricing-freemium { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
.pricing-paid { background: rgba(239, 68, 68, 0.15); color: var(--danger); }
.pricing-bundled, .pricing-add-on { background: rgba(108, 92, 231, 0.15); color: var(--accent); }
.tool-hero-summary { color: var(--text-secondary); font-size: 1.05rem; max-width: 700px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: var(--gradient-1);
  color: white;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--accent-glow);
}
.btn-secondary {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
}
.btn-secondary:hover { background: var(--bg-card-hover); border-color: var(--accent); }
.tool-actions { display: flex; gap: 12px; margin-top: 20px; }

/* ===== Detail Sections ===== */
.detail-section { margin-bottom: 40px; }
.detail-section h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border);
}
.pros-cons { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.pro-list, .con-list { padding: 20px; border-radius: var(--radius); }
.pro-list { background: rgba(16, 185, 129, 0.08); border: 1px solid rgba(16, 185, 129, 0.2); }
.con-list { background: rgba(239, 68, 68, 0.08); border: 1px solid rgba(239, 68, 68, 0.2); }
.pro-list h3 { color: var(--success); margin-bottom: 12px; }
.con-list h3 { color: var(--danger); margin-bottom: 12px; }
.pro-list li::before { content: '✓ '; color: var(--success); }
.con-list li::before { content: '✗ '; color: var(--danger); }
.pro-list li, .con-list li { margin-bottom: 8px; font-size: 0.95rem; }

/* ===== Compare Table ===== */
.alt-tools { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; }
.alt-card {
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
}
.alt-card:hover { border-color: var(--accent); background: var(--bg-card-hover); }
.alt-card h4 { font-size: 1.05rem; margin-bottom: 6px; }
.alt-card p { color: var(--text-secondary); font-size: 0.85rem; }

/* ===== Compare Page ===== */
.compare-table { width: 100%; border-collapse: collapse; margin: 32px 0; }
.compare-table th, .compare-table td {
  padding: 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.compare-table th { color: var(--text-muted); font-size: 0.85rem; font-weight: 600; width: 180px; }
.compare-table td { font-size: 0.95rem; }

/* ===== Category Page ===== */
.filter-bar {
  display: flex;
  gap: 12px;
  margin-bottom: 28px;
  flex-wrap: wrap;
  align-items: center;
}
.filter-btn {
  padding: 8px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  background: rgba(108, 92, 231, 0.15);
  border-color: var(--accent);
  color: var(--accent);
}
.filter-sort {
  margin-left: auto;
  padding: 8px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.85rem;
  cursor: pointer;
}

/* ===== Newsletter ===== */
.newsletter {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  margin: 48px 0;
}
.newsletter h2 { font-size: 1.5rem; margin-bottom: 8px; }
.newsletter p { color: var(--text-secondary); margin-bottom: 24px; }
.newsletter-form {
  display: flex;
  gap: 12px;
  max-width: 440px;
  margin: 0 auto;
}
.newsletter-form input {
  flex: 1;
  padding: 12px 18px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
}
.newsletter-form input:focus { border-color: var(--accent); }

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 32px;
  margin-top: 48px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}
.footer-brand p { color: var(--text-muted); font-size: 0.9rem; margin-top: 8px; }
.footer-col h4 { font-size: 0.95rem; margin-bottom: 16px; }
.footer-col a {
  display: block;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 10px;
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--text-primary); }
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ===== About Page ===== */
.about-content { max-width: 700px; }
.about-content h2 { font-size: 1.5rem; margin: 40px 0 16px; }
.about-content p { color: var(--text-secondary); margin-bottom: 16px; line-height: 1.8; }

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: 60px 0;
  color: var(--text-muted);
}
.empty-state .emoji { font-size: 3rem; margin-bottom: 16px; }

/* ===== Loading ===== */
.loading { text-align: center; padding: 60px 0; color: var(--text-muted); }
.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 16px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .tool-hero { flex-direction: column; }
  .pros-cons { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    gap: 16px;
  }
  .mobile-toggle { display: block; }
  .tool-grid { grid-template-columns: 1fr; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-bar { gap: 24px; }
  .newsletter-form { flex-direction: column; }
  .filter-bar { flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .compare-table { display: block; overflow-x: auto; }
}
@media (max-width: 480px) {
  .cat-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 48px 16px 32px; }
}

/* ===== Upcoming Items ===== */
.upcoming-grid { display: flex; flex-direction: column; gap: 12px; }
.upcoming-item {
  display: flex; align-items: flex-start; gap: 12px;
  background: var(--bg-card); padding: 16px 20px; border-radius: 10px;
  border: 1px solid var(--border); transition: background 0.2s, border-color 0.2s;
  cursor: pointer; user-select: none;
}
.upcoming-item:hover { background: var(--bg-card-hover); border-color: var(--accent); }
.upcoming-item.expanded { border-color: var(--accent); background: rgba(108,92,231,0.04); }
.upcoming-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #a855f7);
  flex-shrink: 0; margin-top: 6px; transition: transform 0.3s;
}
.upcoming-item.expanded .upcoming-dot { transform: scale(1.4); }
.upcoming-body { flex: 1; min-width: 0; }
.upcoming-header {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.upcoming-cat {
  font-size: 0.75rem; padding: 2px 8px;
  background: rgba(108, 92, 231, 0.1); color: #a78bfa;
  border-radius: 8px; text-transform: capitalize;
}
.upcoming-desc {
  color: var(--text-secondary); font-size: 0.85rem;
  margin-top: 4px; line-height: 1.5;
}
.upcoming-details {
  max-height: 0; overflow: hidden;
  transition: max-height 0.35s ease, margin-top 0.35s ease;
  margin-top: 0;
}
.upcoming-item.expanded .upcoming-details {
  max-height: 200px; margin-top: 12px;
}
.upcoming-details p {
  color: var(--text-secondary); font-size: 0.88rem; line-height: 1.7;
  margin: 0; padding-top: 12px; border-top: 1px solid var(--border);
}
.upcoming-eta {
  font-size: 0.8rem; padding: 4px 10px;
  background: rgba(139, 92, 246, 0.12); color: var(--accent); border-radius: 12px;
  flex-shrink: 0; margin-top: 2px;
}
.upcoming-arrow {
  font-size: 0.8rem; color: var(--text-muted);
  flex-shrink: 0; margin-top: 4px; transition: transform 0.3s;
}
.upcoming-item.expanded .upcoming-arrow { transform: rotate(180deg); color: var(--accent); }

/* ===== Tutorial Box ===== */
.tutorial-box { background: linear-gradient(135deg, rgba(139,92,246,0.06), rgba(59,130,246,0.06)); border-radius: 14px; padding: 28px; }
.tutorial-box h2 { color: var(--accent); }
.tutorial-content p { margin-bottom: 12px; }
.tutorial-content p:last-child { margin-bottom: 0; }

/* ===== Affiliate Box ===== */
.affiliate-box {
  background: linear-gradient(135deg, rgba(16,185,129,0.08), rgba(59,130,246,0.08));
  border-radius: 14px; padding: 28px; text-align: center;
}

/* ===== Guide Page ===== */
.guide-hero { text-align: center; padding: 60px 0 40px; }
.guide-hero h1 { font-size: 2.5rem; margin-bottom: 16px; }
.guide-hero p { color: var(--text-secondary); font-size: 1.15rem; max-width: 600px; margin: 0 auto; }
.guide-toc {
  background: var(--bg-card); border-radius: 14px; padding: 28px; margin-bottom: 40px;
  border: 1px solid var(--border);
}
.guide-toc h3 { margin-bottom: 16px; }
.guide-toc ol { padding-left: 20px; color: var(--text-secondary); line-height: 2; }
.guide-toc ol li a { color: var(--accent); text-decoration: none; }
.guide-toc ol li a:hover { text-decoration: underline; }
.guide-section { margin-bottom: 40px; }
.guide-section h2 { font-size: 1.6rem; margin-bottom: 16px; padding-bottom: 8px; border-bottom: 2px solid var(--border); }
.guide-section p { color: var(--text-secondary); line-height: 1.9; margin-bottom: 16px; }
.guide-section ul { color: var(--text-secondary); line-height: 1.9; padding-left: 20px; margin-bottom: 16px; }
.guide-tip {
  background: linear-gradient(135deg, rgba(139,92,246,0.08), rgba(16,185,129,0.08));
  border-radius: 12px; padding: 20px 24px; margin: 20px 0;
  border-left: 4px solid var(--accent);
}
.guide-tip strong { color: var(--accent); }

/* ===== Comparison Article Page ===== */
.compare-article { max-width: 800px; margin: 0 auto; padding: 40px 0; }
.compare-article h1 { font-size: 2.2rem; margin-bottom: 12px; }
.compare-article .subtitle { color: var(--text-secondary); font-size: 1.1rem; margin-bottom: 32px; }
.verdict-box {
  background: linear-gradient(135deg, rgba(16,185,129,0.1), rgba(139,92,246,0.1));
  border-radius: 14px; padding: 24px; margin: 24px 0;
  border: 1px solid rgba(16,185,129,0.3);
}
.verdict-box h3 { color: #10b981; font-size: 1.2rem; margin-bottom: 8px; }