/* ==========================================================================
   AIToolPortal - Sleek Interface Theme Stylesheet
   Design: Sleek Interface (Deep Navy #0f172a, Electric Blue #3b82f6, Cyan #38bdf8)
   ========================================================================== */

:root {
  /* Color System - Sleek Dark Palette */
  --navy-950: #060911;
  --navy-900: #0b0f19;
  --navy-850: #0f172a;
  --navy-800: #162032;
  --navy-700: #1e293b;
  --navy-600: #334155;
  
  --blue-600: #3b82f6;
  --blue-700: #2563eb;
  --blue-800: #1d4ed8;
  --blue-500: #60a5fa;
  --blue-400: #93c5fd;
  --blue-100: rgba(59, 130, 246, 0.15);
  --blue-50:  rgba(59, 130, 246, 0.08);

  --cyan-400: #38bdf8;
  --cyan-500: #06b6d4;
  
  --gray-900: #f8fafc;
  --gray-800: #f1f5f9;
  --gray-700: #e2e8f0;
  --gray-600: #cbd5e1;
  --gray-500: #94a3b8;
  --gray-400: #64748b;
  --gray-300: #475569;
  --gray-200: rgba(255, 255, 255, 0.12);
  --gray-100: rgba(255, 255, 255, 0.06);
  --gray-50:  #0f172a;
  
  --white: #ffffff;
  --emerald-600: #10b981;
  --emerald-50: rgba(16, 185, 129, 0.12);
  --amber-500: #f59e0b;
  --amber-50: rgba(245, 158, 11, 0.12);
  
  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  
  /* Layout & Spacing */
  --max-width: 1200px;
  --header-height: 72px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  /* Sleek Shadows & Glow Effects */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 12px 28px -4px rgba(0, 0, 0, 0.6);
  --shadow-blue: 0 8px 25px -3px rgba(59, 130, 246, 0.4);
  --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.25);
  
  /* Transitions */
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* CSS Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--gray-700);
  background-color: var(--navy-900);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--navy-900);
  color: var(--gray-700);
}

img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--blue-500);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--cyan-400);
}

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.main-content {
  flex: 1;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  background-color: rgba(11, 15, 25, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--white);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--white);
  letter-spacing: -0.025em;
}

.brand-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--blue-600), var(--cyan-400));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.5);
}

.brand-logo span.highlight {
  color: var(--cyan-400);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  color: var(--gray-500);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 0.5rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--white);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--blue-500), var(--cyan-400));
  border-radius: var(--radius-full);
  box-shadow: 0 0 8px rgba(56, 189, 248, 0.6);
}

/* Navigation Drawer Backdrop Overlay */
.nav-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(6, 9, 17, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.nav-backdrop.open {
  opacity: 1;
  visibility: visible;
}

body.menu-open {
  overflow: hidden !important;
}

/* Header & Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Animated Hamburger Toggle Button */
.mobile-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: var(--white);
  cursor: pointer;
  transition: var(--transition);
  align-items: center;
  justify-content: center;
  z-index: 1001;
}

.mobile-toggle:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.22);
}

.hamburger-box {
  width: 22px;
  height: 16px;
  display: inline-block;
  position: relative;
}

.hamburger-inner,
.hamburger-inner::before,
.hamburger-inner::after {
  width: 22px;
  height: 2px;
  background-color: var(--white);
  border-radius: 2px;
  position: absolute;
  transition: transform 0.25s ease-in-out, opacity 0.25s ease-in-out, background-color 0.25s ease;
}

.hamburger-inner {
  top: 50%;
  transform: translateY(-50%);
}

.hamburger-inner::before {
  content: '';
  top: -7px;
}

.hamburger-inner::after {
  content: '';
  bottom: -7px;
}

.mobile-toggle.open .hamburger-inner {
  background-color: transparent;
}

.mobile-toggle.open .hamburger-inner::before {
  transform: translateY(7px) rotate(45deg);
  background-color: var(--cyan-400);
}

.mobile-toggle.open .hamburger-inner::after {
  transform: translateY(-7px) rotate(-45deg);
  background-color: var(--cyan-400);
}

/* Hidden by default on Desktop */
.mobile-only {
  display: none;
}

.mobile-nav-header,
.mobile-search-box {
  display: none;
}

/* Desktop Navigation */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links-wrapper {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  color: var(--gray-500);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 0.5rem 0;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-icon {
  display: none;
}

.nav-badge {
  display: none;
}

.nav-link:hover, .nav-link.active {
  color: var(--white);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--blue-500), var(--cyan-400));
  border-radius: var(--radius-full);
  box-shadow: 0 0 8px rgba(56, 189, 248, 0.6);
}

/* Hero Section */
.hero-section {
  background: radial-gradient(circle at 50% -20%, #1e293b 0%, #0b0f19 80%);
  color: var(--white);
  padding: 5rem 0 5.5rem 0;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 1100px;
  height: 100%;
  background: radial-gradient(50% 50% at 50% 25%, rgba(59, 130, 246, 0.18) 0%, rgba(11, 15, 25, 0) 100%);
  pointer-events: none;
}

.hero-content {
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1.1rem;
  background-color: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: var(--radius-full);
  color: var(--cyan-400);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(8px);
  box-shadow: 0 0 15px rgba(56, 189, 248, 0.15);
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  color: var(--white);
}

.hero-title span.blue-text {
  background: linear-gradient(135deg, var(--cyan-400) 0%, var(--blue-500) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--gray-500);
  line-height: 1.6;
  margin-bottom: 2.5rem;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.hero-search-box {
  background: rgba(22, 32, 50, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
  padding: 0.5rem;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 35px -10px rgba(0, 0, 0, 0.6), 0 0 20px rgba(59, 130, 246, 0.1);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  max-width: 640px;
  margin: 0 auto 2rem auto;
  transition: var(--transition);
}

.hero-search-box:focus-within {
  border-color: var(--blue-500);
  box-shadow: 0 20px 35px -10px rgba(0, 0, 0, 0.6), 0 0 25px rgba(59, 130, 246, 0.25);
}

.search-input-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
  padding-left: 0.75rem;
  color: var(--gray-500);
}

.search-input {
  width: 100%;
  border: none;
  outline: none;
  font-size: 1rem;
  color: var(--white);
  background: transparent;
}

.search-input::placeholder {
  color: var(--gray-400);
}

.btn-search {
  background: linear-gradient(135deg, var(--blue-600) 0%, var(--blue-700) 100%);
  color: var(--white);
  font-weight: 600;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
  box-shadow: var(--shadow-blue);
}

.btn-search:hover {
  background: linear-gradient(135deg, var(--blue-500) 0%, var(--blue-600) 100%);
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.6);
  transform: translateY(-1px);
}

.quick-tags {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--gray-500);
}

.tag-btn {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--gray-600);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.8rem;
  transition: var(--transition);
}

.tag-btn:hover {
  background-color: rgba(59, 130, 246, 0.2);
  color: var(--white);
  border-color: var(--blue-500);
}

/* Buttons & UI Controls */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  transition: var(--transition);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--blue-600) 0%, var(--blue-700) 100%);
  color: var(--white);
  box-shadow: var(--shadow-blue);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--blue-500) 0%, var(--blue-600) 100%);
  color: var(--white);
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--white);
}

.btn-outline {
  border: 1px solid var(--blue-500);
  color: var(--cyan-400);
  background: transparent;
}

.btn-outline:hover {
  background-color: rgba(59, 130, 246, 0.12);
  color: var(--white);
  border-color: var(--cyan-400);
  box-shadow: 0 0 15px rgba(56, 189, 248, 0.2);
}

/* Page Section Wrappers */
.section {
  padding: 4.5rem 0;
}

.section-light {
  background-color: #0f172a;
}

.section-gray {
  background-color: #0b0f19;
}

.section-navy {
  background-color: #060911;
  color: var(--white);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.section-header {
  margin-bottom: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.section-header.center {
  text-align: center;
  align-items: center;
}

.section-subtitle {
  color: var(--cyan-400);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.section-navy .section-subtitle {
  color: var(--cyan-400);
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
}

.section-navy .section-title {
  color: var(--white);
}

.section-desc {
  color: var(--gray-500);
  font-size: 1.05rem;
  max-width: 650px;
}

.section-navy .section-desc {
  color: var(--gray-500);
}

/* Category Grid */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
}

.category-card {
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.5) 0%, rgba(15, 23, 42, 0.7) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: var(--transition);
  color: var(--gray-700);
  backdrop-filter: blur(8px);
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 25px -5px rgba(59, 130, 246, 0.25);
  border-color: var(--blue-500);
}

.category-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background-color: rgba(59, 130, 246, 0.12);
  color: var(--cyan-400);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.category-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
}

.category-count {
  font-size: 0.85rem;
  color: var(--gray-500);
}

/* Tool Cards & Grid */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.75rem;
}

.tool-card {
  background: linear-gradient(180deg, rgba(22, 32, 50, 0.75) 0%, rgba(15, 23, 42, 0.9) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
  backdrop-filter: blur(8px);
}

.tool-card:hover {
  border-color: rgba(59, 130, 246, 0.6);
  box-shadow: 0 12px 30px -5px rgba(59, 130, 246, 0.22);
  transform: translateY(-4px);
}

.tool-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.tool-avatar {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--navy-800);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.25rem;
  flex-shrink: 0;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-sm);
}

.tool-meta {
  flex: 1;
}

.tool-name {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.pricing-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.pricing-badge.free {
  background-color: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.pricing-badge.freemium {
  background-color: rgba(59, 130, 246, 0.15);
  color: var(--cyan-400);
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.pricing-badge.paid {
  background-color: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.rating-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--gray-500);
}

.stars {
  color: #fbbf24;
  display: flex;
  gap: 2px;
}

.rating-score {
  font-weight: 700;
  color: var(--white);
}

.tool-desc {
  color: var(--gray-500);
  font-size: 0.95rem;
  line-height: 1.5;
  margin-bottom: 1.25rem;
  flex: 1;
}

.tool-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

.tag {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--gray-600);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.tool-card-footer {
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.read-review-link {
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--cyan-400);
}

.read-review-link:hover {
  color: var(--white);
}

/* Comparison Matrix Table */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  background: rgba(15, 23, 42, 0.8);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(8px);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

.comparison-table th, 
.comparison-table td {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.comparison-table th {
  background-color: rgba(30, 41, 59, 0.6);
  font-weight: 700;
  color: var(--white);
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table tr:hover td {
  background-color: rgba(255, 255, 255, 0.03);
}

.table-tool-name {
  font-weight: 700;
  color: var(--white);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Filter Controls Bar (articles.html) */
.filter-bar {
  background-color: rgba(22, 32, 50, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  backdrop-filter: blur(8px);
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.filter-select {
  padding: 0.6rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  background-color: #0f172a;
  color: var(--white);
  font-size: 0.9rem;
  outline: none;
  transition: var(--transition);
}

.filter-select option {
  background-color: #0f172a;
  color: var(--white);
}

.filter-select:focus {
  border-color: var(--blue-500);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

/* Static Article Content Styles */
.article-container {
  max-width: 800px;
  margin: 0 auto;
  background: rgba(22, 32, 50, 0.85);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-md);
  color: var(--gray-700);
  backdrop-filter: blur(8px);
}

.article-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.article-category {
  display: inline-block;
  color: var(--cyan-400);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.article-main-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1.25;
  margin-bottom: 1rem;
}

.article-meta-row {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  color: var(--gray-500);
  font-size: 0.875rem;
}

.article-body {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--gray-600);
}

.article-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  margin: 2rem 0 1rem 0;
}

.article-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  margin: 1.5rem 0 0.75rem 0;
}

.article-body p {
  margin-bottom: 1.25rem;
}

.article-body ul, .article-body ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.article-body ul {
  list-style-type: disc;
}

.article-body li {
  margin-bottom: 0.5rem;
}

.article-callout {
  background-color: rgba(59, 130, 246, 0.1);
  border-left: 4px solid var(--blue-500);
  padding: 1.25rem 1.5rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 1.5rem 0;
  color: var(--gray-700);
}

/* Forms (Contact, Newsletter) */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.form-label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--white);
}

.form-control {
  padding: 0.75rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
  width: 100%;
  background-color: rgba(15, 23, 42, 0.8);
  color: var(--white);
}

.form-control::placeholder {
  color: var(--gray-400);
}

.form-control:focus {
  border-color: var(--blue-500);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

.form-feedback {
  display: none;
  padding: 1rem;
  border-radius: var(--radius-md);
  margin-top: 1rem;
  font-weight: 500;
}

.form-feedback.success {
  display: block;
  background-color: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

/* Newsletter Box */
.newsletter-box {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.9) 0%, rgba(11, 15, 25, 0.95) 100%);
  border-radius: var(--radius-lg);
  padding: 3.5rem 2rem;
  text-align: center;
  color: var(--white);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(12px);
}

.newsletter-inner {
  max-width: 580px;
  margin: 0 auto;
}

.newsletter-form {
  display: flex;
  gap: 0.5rem;
  margin-top: 1.75rem;
  flex-direction: row;
}

.newsletter-input {
  flex: 1;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(15, 23, 42, 0.8);
  color: var(--white);
  font-size: 0.95rem;
}

.newsletter-input::placeholder {
  color: var(--gray-400);
}

.newsletter-input:focus {
  outline: none;
  border-color: var(--blue-500);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

/* Footer */
.site-footer {
  background-color: var(--navy-950);
  color: var(--gray-500);
  padding: 4rem 0 2rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-brand p {
  color: var(--gray-500);
  max-width: 320px;
  line-height: 1.6;
}

.footer-col-title {
  color: var(--white);
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 1.25rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--gray-500);
}

.footer-links a:hover {
  color: var(--cyan-400);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Table Scroll Hint */
.table-scroll-hint {
  font-size: 0.8rem;
  color: var(--cyan-400);
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.2);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.75rem;
  margin-bottom: 0.75rem;
  text-align: center;
}

/* Responsive Styles */
@media (max-width: 992px) {
  .hero-title {
    font-size: 2.25rem;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: flex;
  }

  .mobile-only {
    display: block;
  }

  /* Header adjustments */
  .header-inner {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
  }

  .header-cta-btn {
    padding: 0.45rem 0.85rem;
    font-size: 0.8rem;
  }

  /* Mobile Navigation Drawer Panel */
  .nav-menu {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 320px;
    max-width: 88vw;
    height: 100vh;
    background: #0b0f19;
    border-left: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    padding: 1.25rem 1.25rem 2rem 1.25rem;
    gap: 0;
    transform: translateX(100%);
    opacity: 1;
    visibility: visible;
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.85);
    overflow-y: auto;
  }

  .nav-menu.open {
    transform: translateX(0);
  }

  /* Mobile Drawer Header */
  .mobile-nav-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 1rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .mobile-close-btn {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
  }

  .mobile-close-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    color: var(--cyan-400);
  }

  /* Mobile Quick Search inside Drawer */
  .mobile-search-box {
    display: block;
    margin-bottom: 1rem;
  }

  .mobile-search-form .search-input-wrap {
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-md);
    padding: 0.6rem 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
  }

  .mobile-search-form .search-input {
    width: 100%;
    background: transparent;
    border: none;
    outline: none;
    color: var(--white);
    font-size: 0.875rem;
  }

  /* Mobile Drawer Nav Links Wrapper */
  .nav-links-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    flex: 1;
  }

  .nav-section-title {
    font-size: 0.725rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--cyan-400);
    margin: 1rem 0 0.4rem 0.2rem;
  }

  .nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0.9rem;
    border-radius: var(--radius-md);
    color: var(--gray-600);
    font-size: 0.95rem;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
  }

  .nav-link::after {
    display: none; /* Hide horizontal underline indicator in drawer */
  }

  .nav-icon {
    display: block;
    color: var(--gray-500);
    transition: var(--transition);
  }

  .nav-link:hover, .nav-link.active {
    background: rgba(59, 130, 246, 0.15);
    color: var(--white);
    border-color: rgba(59, 130, 246, 0.35);
  }

  .nav-link.active .nav-icon {
    color: var(--cyan-400);
  }

  .nav-badge {
    display: inline-block;
    margin-left: auto;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.15rem 0.5rem;
    border-radius: var(--radius-full);
    background: rgba(56, 189, 248, 0.15);
    color: var(--cyan-400);
    border: 1px solid rgba(56, 189, 248, 0.3);
  }

  .mobile-nav-categories {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.4rem;
  }

  .mobile-cat-link {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--gray-500);
    padding: 0.45rem 0.6rem;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
    text-align: center;
  }

  .mobile-cat-link:hover {
    color: var(--cyan-400);
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.25);
  }

  .mobile-nav-legal {
    display: flex;
    gap: 1.25rem;
  }

  .mobile-legal-link {
    font-size: 0.825rem;
    color: var(--gray-500);
    text-decoration: underline;
    text-underline-offset: 3px;
  }

  .mobile-legal-link:hover {
    color: var(--cyan-400);
  }

  .mobile-nav-footer {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    text-align: center;
  }

  .mobile-footer-note {
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: 0.5rem;
  }

  /* Layout & Grid responsiveness on mobile */
  .hero-section {
    padding: 3rem 0 3.5rem 0;
  }

  .hero-title {
    font-size: 2.15rem;
  }

  .hero-subtitle {
    font-size: 1.05rem;
    margin-bottom: 1.75rem;
  }

  .hero-search-box {
    flex-direction: column;
    padding: 0.75rem;
    gap: 0.75rem;
  }

  .btn-search {
    width: 100%;
    justify-content: center;
  }

  .quick-tags {
    gap: 0.4rem;
  }

  .tag-btn {
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
  }

  .section {
    padding: 3rem 0;
  }

  .section-title {
    font-size: 1.65rem;
  }

  .tools-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .category-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .filter-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 0.85rem;
    padding: 1rem;
  }

  .filter-bar .search-input-wrap {
    width: 100%;
    min-width: 0 !important;
  }

  .filter-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    width: 100%;
  }

  .filter-select {
    width: 100%;
  }

  .contact-grid {
    grid-template-columns: 1fr !important;
    gap: 2rem !important;
  }

  .article-container {
    padding: 1.5rem 1.25rem;
  }

  .article-main-title {
    font-size: 1.75rem;
  }

  .newsletter-box {
    padding: 2.25rem 1.25rem;
  }

  .newsletter-form {
    flex-direction: column;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.85rem;
  }

  .filter-group {
    grid-template-columns: 1fr;
  }

  .header-cta-btn {
    display: none;
  }

  .mobile-nav-categories {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Mobile Article Reading Experience (max-width: 767px)
   ========================================================================== */
@media (max-width: 767px) {
  .main-content .container {
    width: 100% !important;
    max-width: 100% !important;
    padding-left: 0 !important;
    padding-right: 0 !important;
  }

  .main-content nav[aria-label="Breadcrumb"] {
    padding: 0 20px !important;
  }

  .article-container {
    width: 100% !important;
    max-width: 100% !important;
    padding: 0 20px !important;
    border: none !important;
    box-shadow: none !important;
    border-radius: 0 !important;
  }

  .article-main-title {
    font-size: 26px !important;
  }

  .article-body,
  .article-body-content,
  .article-body p,
  .article-body-content p {
    font-size: 17px !important;
  }

  .article-body p,
  .article-body-content p {
    line-height: 1.75 !important;
    margin-bottom: 1.5rem !important;
  }
}