/* Modern Design System for Web Utilities Portal */
:root {
  --bg-dark: #0b0f17;
  --bg-card: #151c2c;
  --bg-card-hover: #1e293d;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(59, 130, 246, 0.3);

  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-glow: rgba(59, 130, 246, 0.25);
  --accent-purple: #8b5cf6;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-subtle: #64748b;

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-family);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Background mesh glow effects */
.bg-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  background: 
    radial-gradient(circle at 15% 20%, rgba(59, 130, 246, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 85% 80%, rgba(139, 92, 246, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 50% 50%, rgba(16, 185, 129, 0.04) 0%, transparent 60%);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header & Nav */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 15, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-main);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-badge {
  background: linear-gradient(135deg, var(--primary), var(--accent-purple));
  color: white;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.nav-links a:hover {
  color: var(--text-main);
}

/* Hero Section */
.hero {
  padding: 4.5rem 0 3rem;
  text-align: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: var(--radius-full);
  color: var(--primary);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
}

.hero h1 {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #ffffff 30%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 2rem;
}

/* Controls Bar: Search & Category Filters */
.controls-bar {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
  align-items: center;
}

.search-box {
  position: relative;
  width: 100%;
  max-width: 540px;
}

.search-box input {
  width: 100%;
  padding: 0.875rem 1.25rem 0.875rem 3rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 1rem;
  outline: none;
  transition: all var(--transition-fast);
}

.search-box input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-glow);
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-subtle);
  pointer-events: none;
}

.category-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
}

.filter-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--text-main);
}

.filter-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  box-shadow: 0 0 12px var(--primary-glow);
}

/* Grid & Cards */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
  position: relative;
  text-decoration: none;
  color: inherit;
}

.tool-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
  box-shadow: 0 12px 24px -10px rgba(0, 0, 0, 0.5), 0 0 20px rgba(59, 130, 246, 0.15);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.tool-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.tool-info h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
}

.category-tag {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
  margin-top: 0.1rem;
}

.tool-card p {
  color: var(--text-muted);
  font-size: 0.925rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.privacy-badge {
  font-size: 0.75rem;
  color: var(--accent-emerald);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 500;
}

.card-link-text {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.tool-card:hover .card-link-text {
  color: #60a5fa;
}

/* Tool Detail Landing Page Layout */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-subtle);
  margin: 2rem 0 1.5rem;
}

.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
}

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

.tool-detail-hero {
  background: linear-gradient(180deg, var(--bg-card) 0%, rgba(21, 28, 44, 0.4) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  margin-bottom: 3rem;
  position: relative;
  overflow: hidden;
}

.tool-detail-content {
  max-width: 800px;
}

.tool-detail-title {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 1rem;
}

.tool-detail-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(139, 92, 246, 0.2));
  border: 1px solid var(--primary-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  flex-shrink: 0;
}

.tool-detail-title h1 {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.2;
}

.tool-detail-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: linear-gradient(135deg, var(--primary), var(--accent-purple));
  color: white;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.05rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 14px var(--primary-glow);
  transition: all var(--transition-fast);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

.tool-sections {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2.5rem;
  margin-bottom: 4rem;
}

@media (max-width: 868px) {
  .tool-sections {
    grid-template-columns: 1fr;
  }
}

.content-block {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2rem;
}

.content-block h2 {
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  color: var(--text-main);
}

.feature-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.feature-item {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
}

.feature-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.feature-text h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.feature-text p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.sidebar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}

.sidebar-card h3 {
  font-size: 1.15rem;
  margin-bottom: 1rem;
}

.spec-list {
  list-style: none;
}

.spec-item {
  display: flex;
  justify-content: space-between;
  padding: 0.6rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.9rem;
}

.spec-item:last-child {
  border-bottom: none;
}

.spec-label {
  color: var(--text-muted);
}

.spec-value {
  font-weight: 600;
  color: var(--text-main);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  background: rgba(15, 23, 42, 0.4);
}

.faq-item h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.faq-item p {
  font-size: 0.925rem;
  color: var(--text-muted);
}

/* Footer */
footer {
  margin-top: auto;
  background: rgba(11, 15, 23, 0.95);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0 2rem;
  font-size: 0.9rem;
  color: var(--text-subtle);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

@media (max-width: 768px) {
  .footer-content {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .footer-content {
    grid-template-columns: 1fr;
  }
}

.footer-brand p {
  color: var(--text-muted);
  margin-top: 0.75rem;
  max-width: 320px;
  font-size: 0.875rem;
}

.footer-col h4 {
  color: var(--text-main);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-subtle);
  font-size: 0.85rem;
}