/* ============================================
   FRAMEWORK FINDER - Design System
   Editorial meets Modern Reference
   ============================================ */

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  /* Color Palette - Slate & Amber */
  --color-slate-950: #0f172a;
  --color-slate-900: #1e293b;
  --color-slate-800: #334155;
  --color-slate-700: #475569;
  --color-slate-600: #64748b;
  --color-slate-500: #94a3b8;
  --color-slate-400: #cbd5e1;
  --color-slate-300: #e2e8f0;
  --color-slate-200: #f1f5f9;
  --color-slate-100: #f8fafc;
  --color-slate-50: #fafcff;
  
  /* Accent - Warm Amber */
  --color-amber-600: #d97706;
  --color-amber-500: #f59e0b;
  --color-amber-400: #fbbf24;
  --color-amber-100: #fef3c7;
  --color-amber-50: #fffbeb;
  
  /* Semantic Colors */
  --color-bg-primary: var(--color-slate-50);
  --color-bg-secondary: #ffffff;
  --color-bg-tertiary: var(--color-slate-100);
  --color-bg-dark: var(--color-slate-900);
  --color-text-primary: var(--color-slate-900);
  --color-text-secondary: var(--color-slate-600);
  --color-text-muted: var(--color-slate-500);
  --color-text-inverse: var(--color-slate-50);
  --color-accent: var(--color-amber-600);
  --color-accent-light: var(--color-amber-100);
  --color-border: var(--color-slate-200);
  --color-border-strong: var(--color-slate-300);
  
  /* Typography Scale */
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  
  /* Spacing Scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
  
  /* Layout */
  --container-max: 1200px;
  --container-narrow: 800px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-amber-500);
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-text-primary);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
  margin-bottom: var(--space-4);
}

p:last-child {
  margin-bottom: 0;
}

/* --- Layout Utilities --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container--narrow {
  max-width: var(--container-narrow);
}

main {
  flex: 1;
}

/* --- Header --- */
.header {
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text-primary);
}

.header__logo-icon {
  width: 40px;
  height: 40px;
  background: var(--color-slate-900);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-amber-400);
}

.header__logo-icon svg {
  width: 24px;
  height: 24px;
}

.header__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  letter-spacing: -0.02em;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.header__nav-link {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: color var(--transition-fast);
}

.header__nav-link:hover,
.header__nav-link--active {
  color: var(--color-text-primary);
}

/* Mobile Menu Button */
.header__menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  color: var(--color-text-primary);
}

.header__menu-btn svg {
  width: 24px;
  height: 24px;
}

/* Mobile Navigation */
.mobile-nav {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg-secondary);
  z-index: 99;
  padding: var(--space-6);
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-nav--open {
  display: flex;
}

.mobile-nav__link {
  display: block;
  padding: var(--space-4);
  color: var(--color-text-primary);
  font-size: var(--text-lg);
  border-bottom: 1px solid var(--color-border);
}

/* --- Footer --- */
.footer {
  background: var(--color-bg-dark);
  color: var(--color-text-inverse);
  padding: var(--space-12) 0 var(--space-6);
  margin-top: auto;
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-12);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text-inverse);
}

.footer__logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-slate-800);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-amber-400);
}

.footer__logo-icon svg {
  width: 20px;
  height: 20px;
}

.footer__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
}

.footer__tagline {
  color: var(--color-slate-400);
  font-size: var(--text-sm);
  max-width: 300px;
}

.footer__section-title {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-slate-500);
  margin-bottom: var(--space-4);
}

.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__link {
  color: var(--color-slate-300);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-amber-400);
}

.footer__bottom {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-slate-800);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-slate-500);
  font-size: var(--text-sm);
}

.footer__legal-links {
  display: flex;
  gap: var(--space-6);
}

.footer__legal-link {
  color: var(--color-slate-500);
}

.footer__legal-link:hover {
  color: var(--color-slate-300);
}

/* --- Hero Section --- */
.hero {
  background: linear-gradient(135deg, var(--color-slate-900) 0%, var(--color-slate-800) 100%);
  color: var(--color-text-inverse);
  padding: var(--space-10) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(251, 191, 36, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(251, 191, 36, 0.05) 0%, transparent 40%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(251, 191, 36, 0.1);
  border: 1px solid rgba(251, 191, 36, 0.2);
  color: var(--color-amber-400);
  padding: var(--space-1) var(--space-3);
  border-radius: 100px;
  font-size: var(--text-xs);
  font-weight: 500;
  margin-bottom: var(--space-4);
}

.hero__title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  margin-bottom: var(--space-4);
  line-height: 1.1;
  color: #ffffff;
}

.hero__title-accent {
  color: var(--color-amber-400);
}

.hero__description {
  font-size: var(--text-base);
  color: var(--color-slate-200);
  max-width: 600px;
  margin: 0 auto;
}

/* --- Filter Section --- */
.filter-section {
  background: var(--color-bg-secondary);
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--color-border);
}

.filter-section__header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.filter-section__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-2);
}

.filter-section__subtitle {
  color: var(--color-text-secondary);
}

.filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

/* Form Elements */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
}

.form-select {
  appearance: none;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  padding-right: var(--space-10);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
}

.form-select:hover {
  border-color: var(--color-slate-400);
}

.form-select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-amber-100);
}

/* Multi-select container */
.multi-select {
  position: relative;
}

.multi-select__trigger {
  appearance: none;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  padding-right: var(--space-10);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  cursor: pointer;
  width: 100%;
  text-align: left;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
}

.multi-select__trigger:hover {
  border-color: var(--color-slate-400);
}

.multi-select__trigger:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-amber-100);
}

.multi-select__dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 50;
  display: none;
  max-height: 280px;
  overflow-y: auto;
}

.multi-select__dropdown--open {
  display: block;
}

.multi-select__option {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.multi-select__option:hover {
  background: var(--color-bg-tertiary);
}

.multi-select__checkbox {
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.multi-select__option--selected .multi-select__checkbox {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.multi-select__checkbox svg {
  width: 12px;
  height: 12px;
  color: white;
  opacity: 0;
}

.multi-select__option--selected .multi-select__checkbox svg {
  opacity: 1;
}

.multi-select__label {
  font-size: var(--text-sm);
  color: var(--color-text-primary);
}

/* Selected tags */
.selected-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-2);
  min-height: 28px;
}

.selected-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  background: var(--color-amber-100);
  color: var(--color-amber-600);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 500;
}

.selected-tag__remove {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-amber-600);
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.selected-tag__remove:hover {
  opacity: 1;
}

.selected-tag__remove svg {
  width: 14px;
  height: 14px;
}

/* Filter Buttons */
.filter-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
}

.btn--primary {
  background: var(--color-accent);
  color: white;
}

.btn--primary:hover {
  background: var(--color-amber-500);
  color: white;
}

.btn--secondary {
  background: transparent;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border-strong);
}

.btn--secondary:hover {
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
}

.btn--outline {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}

.btn--outline:hover {
  background: var(--color-amber-50);
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

.btn svg {
  width: 18px;
  height: 18px;
}

/* --- Results Section --- */
.results-section {
  padding: var(--space-12) 0;
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-8);
}

.results-count {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
}

.results-count strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

.compare-action {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.compare-count {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* Framework Grid */
.framework-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-6);
}

/* Framework Card */
.framework-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--transition-base);
  position: relative;
}

.framework-card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-md);
}

.framework-card--selected {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-amber-100);
}

.framework-card__header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.framework-card__checkbox {
  flex-shrink: 0;
  margin-top: var(--space-1);
}

.framework-card__checkbox input {
  width: 20px;
  height: 20px;
  cursor: pointer;
  accent-color: var(--color-accent);
}

.framework-card__checkbox input:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.framework-card__title-group {
  flex: 1;
}

.framework-card__title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-1);
}

.framework-card__title a {
  color: var(--color-text-primary);
  text-decoration: none;
}

.framework-card__title a:hover {
  color: var(--color-accent);
}

.framework-card__meta {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.framework-card__description {
  color: var(--color-text-secondary);
  font-size: var(--text-base);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.framework-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.framework-card__tag {
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  padding: var(--space-1) var(--space-3);
  border-radius: 100px;
  font-size: var(--text-xs);
  font-weight: 500;
}

.framework-card__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.framework-card__stats {
  display: flex;
  gap: var(--space-4);
}

.framework-card__stat {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.framework-card__stat svg {
  width: 16px;
  height: 16px;
}

.framework-card__link {
  font-size: var(--text-sm);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.framework-card__link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.framework-card__link:hover svg {
  transform: translateX(4px);
}

/* No Results */
.no-results {
  text-align: center;
  padding: var(--space-16) var(--space-6);
}

.no-results__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-6);
  color: var(--color-slate-300);
}

.no-results__title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
}

.no-results__text {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

/* --- Comparison Page --- */
.comparison-section {
  padding: var(--space-12) 0;
}

.comparison-header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.comparison-header__title {
  margin-bottom: var(--space-4);
}

.comparison-header__frameworks {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.comparison-header__framework {
  background: var(--color-amber-100);
  color: var(--color-amber-600);
  padding: var(--space-2) var(--space-4);
  border-radius: 100px;
  font-weight: 500;
}

/* Comparison Table */
.comparison-table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-secondary);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

.comparison-table th,
.comparison-table td {
  padding: var(--space-4) var(--space-5);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.comparison-table th {
  background: var(--color-bg-tertiary);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.comparison-table th:first-child {
  width: 180px;
  background: var(--color-slate-100);
}

.comparison-table th a {
  color: var(--color-text-primary);
  font-size: var(--text-base);
  text-transform: none;
  letter-spacing: normal;
}

.comparison-table th a:hover {
  color: var(--color-accent);
}

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

.comparison-table td:first-child {
  background: var(--color-slate-50);
  font-weight: 500;
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}

.comparison-table td {
  color: var(--color-text-primary);
  font-size: var(--text-base);
  line-height: 1.5;
}

.comparison-table tbody tr:hover td {
  background: var(--color-amber-50);
}

.comparison-table tbody tr:hover td:first-child {
  background: var(--color-amber-100);
}

/* Comparison Actions */
.comparison-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

/* --- Framework Detail Page --- */
.framework-detail {
  padding: var(--space-12) 0;
}

.framework-detail__header {
  margin-bottom: var(--space-10);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border);
}

.framework-detail__breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.framework-detail__breadcrumb a {
  color: var(--color-text-muted);
}

.framework-detail__breadcrumb a:hover {
  color: var(--color-accent);
}

.framework-detail__title {
  margin-bottom: var(--space-3);
}

.framework-detail__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  color: var(--color-text-secondary);
}

.framework-detail__meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.framework-detail__meta-item svg {
  width: 18px;
  height: 18px;
  color: var(--color-text-muted);
}

/* Content Sections */
.content-section {
  margin-bottom: var(--space-10);
}

.content-section__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-amber-400);
  display: inline-block;
}

.content-section p {
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.content-section ul {
  list-style: none;
  margin-top: var(--space-4);
}

.content-section li {
  position: relative;
  padding-left: var(--space-6);
  margin-bottom: var(--space-3);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.content-section li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  background: var(--color-amber-400);
  border-radius: 50%;
}

/* Quick Reference Table */
.quick-reference {
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin: var(--space-6) 0;
}

.quick-reference__title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-4);
}

.quick-reference__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
}

.quick-reference__item {
  background: var(--color-bg-secondary);
  padding: var(--space-4);
  border-radius: var(--radius-md);
}

.quick-reference__label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}

.quick-reference__value {
  font-weight: 500;
  color: var(--color-text-primary);
}

/* Related Frameworks */
.related-frameworks {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-top: var(--space-8);
}

.related-frameworks__title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}

.related-frameworks__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.related-frameworks__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.related-frameworks__item input {
  width: 18px;
  height: 18px;
  accent-color: var(--color-accent);
}

.related-frameworks__item label {
  font-weight: 500;
  cursor: pointer;
}

/* Resources */
.resources-list {
  display: grid;
  gap: var(--space-3);
}

.resource-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.resource-link:hover {
  border-color: var(--color-accent);
  background: var(--color-amber-50);
}

.resource-link svg {
  width: 20px;
  height: 20px;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.resource-link__text {
  flex: 1;
}

.resource-link__title {
  font-weight: 500;
  color: var(--color-text-primary);
}

.resource-link__url {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* --- Stub Pages --- */
.stub-page {
  padding: var(--space-16) 0;
  text-align: center;
}

.stub-page__icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-6);
  color: var(--color-slate-300);
}

.stub-page__title {
  margin-bottom: var(--space-4);
}

.stub-page__text {
  color: var(--color-text-secondary);
  max-width: 500px;
  margin: 0 auto var(--space-8);
}

/* --- Responsive Design --- */
@media (max-width: 1024px) {
  .footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
  
  .footer__brand {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  :root {
    --text-5xl: 2.5rem;
    --text-4xl: 2rem;
    --text-3xl: 1.5rem;
  }
  
  .header__nav {
    display: none;
  }
  
  .header__menu-btn {
    display: block;
  }
  
  .hero {
    padding: var(--space-8) 0;
  }
  
  .filter-grid {
    grid-template-columns: 1fr;
  }
  
  .form-select,
  .multi-select__trigger {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }
  
  .multi-select {
    width: 100%;
  }
  
  .multi-select__dropdown {
    width: 100%;
    max-width: 100%;
  }
  
  .filter-actions {
    flex-direction: column;
  }
  
  .filter-actions .btn {
    width: 100%;
  }
  
  .framework-grid {
    grid-template-columns: 1fr;
  }
  
  .results-header {
    flex-direction: column;
    gap: var(--space-4);
    align-items: flex-start;
  }
  
  .compare-action {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
  }
  
  .footer__inner {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  
  .footer__brand {
    grid-column: auto;
  }
  
  .footer__bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
  
  .comparison-table th,
  .comparison-table td {
    padding: var(--space-3);
  }
  
  .quick-reference__grid {
    grid-template-columns: 1fr;
  }
  
  .framework-detail__meta {
    flex-direction: column;
    gap: var(--space-3);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-4);
  }
  
  .header__inner {
    height: 60px;
  }
  
  .header__logo-text {
    font-size: var(--text-lg);
  }
  
  .hero__badge {
    font-size: var(--text-xs);
  }
  
  .framework-card {
    padding: var(--space-4);
  }
  
  .btn {
    padding: var(--space-3) var(--space-4);
  }
  
  .comparison-header__frameworks {
    flex-direction: column;
    align-items: center;
  }
}

/* --- Utility Classes --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-center {
  text-align: center;
}

.mb-0 {
  margin-bottom: 0;
}

.mt-4 {
  margin-top: var(--space-4);
}

.mt-8 {
  margin-top: var(--space-8);
}

/* ============================================
   Definition Box Component
   ============================================ */
.definition-box {
  background: linear-gradient(135deg, var(--color-amber-50), var(--color-slate-100));
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-6);
  margin: var(--space-6) 0;
  position: relative;
}

.definition-box::before {
  content: "Definition";
  position: absolute;
  top: calc(-0.6em);
  left: var(--space-4);
  background: var(--color-accent);
  color: var(--color-text-inverse);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
}

.definition-box__text {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0;
}

.definition-box__text strong {
  color: var(--color-text-primary);
  font-family: var(--font-display);
  font-weight: 400;
}

.definition-box__formula {
  font-family: 'Courier New', monospace;
  background: var(--color-bg-secondary);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  font-weight: 600;
  color: var(--color-slate-800);
}

/* ============================================
   How It Works Table Component
   ============================================ */
.how-it-works {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin: var(--space-6) 0;
}

.how-it-works__title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.how-it-works__title svg {
  width: 24px;
  height: 24px;
  color: var(--color-accent);
}

.how-it-works__table {
  width: 100%;
  border-collapse: collapse;
}

.how-it-works__table tr {
  border-bottom: 1px solid var(--color-border);
}

.how-it-works__table tr:last-child {
  border-bottom: none;
}

.how-it-works__table th,
.how-it-works__table td {
  padding: var(--space-4);
  text-align: left;
  vertical-align: top;
}

.how-it-works__table th {
  width: 35%;
  background: var(--color-bg-tertiary);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.how-it-works__table td {
  color: var(--color-text-secondary);
  font-size: var(--text-base);
}

.how-it-works__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--color-accent);
  color: white;
  border-radius: 50%;
  margin-right: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 700;
}

.how-it-works__label {
  display: flex;
  align-items: center;
}

/* Mobile responsive for How It Works table */
@media (max-width: 600px) {
  .how-it-works__table,
  .how-it-works__table tbody,
  .how-it-works__table tr,
  .how-it-works__table th,
  .how-it-works__table td {
    display: block;
    width: 100%;
  }
  
  .how-it-works__table tr {
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-4);
  }
  
  .how-it-works__table th {
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-2);
  }
  
  .how-it-works__table td {
    padding: var(--space-2) var(--space-4);
  }
}

/* ============================================
   Framework Comparison Section
   ============================================ */
.framework-comparisons {
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  margin: var(--space-8) 0;
}

.framework-comparisons__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-4);
  color: var(--color-text-primary);
}

.framework-comparisons__intro {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  line-height: 1.7;
}

.framework-comparisons__item {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  margin-bottom: var(--space-4);
  border-left: 3px solid var(--color-accent);
}

.framework-comparisons__item:last-child {
  margin-bottom: 0;
}

.framework-comparisons__item-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

.framework-comparisons__item-text {
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0;
}

.framework-comparisons__item-text a {
  font-weight: 500;
}

/* Contextual link styling within content sections */
.content-section a {
  color: var(--color-accent);
  font-weight: 500;
  border-bottom: 1px dotted var(--color-accent);
  transition: all var(--transition-fast);
}

.content-section a:hover {
  color: var(--color-amber-500);
  border-bottom-style: solid;
}

/* ============================================
   Problem-First Discovery System Styles
   ============================================ */

/* Search Group */
.search-group {
  margin-bottom: var(--space-6);
}

.search-group .form-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.search-input {
  width: 100%;
  padding: var(--space-4);
  font-size: var(--text-lg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-secondary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-amber-100);
}

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

.search-hint {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

/* Filter Divider */
.filter-divider {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin: var(--space-8) 0;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.filter-divider::before,
.filter-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

/* Step Header */
.step-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--color-accent);
  color: white;
  border-radius: 50%;
  font-size: var(--text-sm);
  font-weight: 600;
}

.step-header .form-label {
  margin-bottom: 0;
  font-size: var(--text-lg);
}

/* Category Grid */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

/* Category Card */
.category-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-5);
  background: var(--color-bg-secondary);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
}

.category-card:hover {
  border-color: var(--color-slate-400);
  box-shadow: var(--shadow-md);
}

.category-card--selected {
  border-color: var(--color-accent);
  background: var(--color-amber-50);
}

.category-card--selected:hover {
  border-color: var(--color-accent);
}

.category-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-slate-100);
  border-radius: var(--radius-md);
  color: var(--color-slate-600);
  transition: all var(--transition-fast);
}

.category-card--selected .category-card__icon {
  background: var(--color-accent);
  color: white;
}

.category-card__icon svg {
  width: 20px;
  height: 20px;
}

.category-card__label {
  font-weight: 600;
  color: var(--color-text-primary);
  font-size: var(--text-base);
}

.category-card__description {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.4;
}

/* Multi-select Toggle */
.multi-select-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  cursor: pointer;
  margin-top: var(--space-2);
}

.multi-select-toggle input {
  width: 18px;
  height: 18px;
  accent-color: var(--color-accent);
}

/* Refinement Section */
.refinement-section {
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-top: var(--space-4);
}

.form-hint {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

/* Criteria Grid */
.criteria-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-3);
}

/* Criteria Checkbox */
.criteria-checkbox {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.criteria-checkbox:hover {
  border-color: var(--color-slate-400);
}

.criteria-checkbox input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.criteria-checkbox__box {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background: var(--color-bg-secondary);
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.criteria-checkbox__box svg {
  width: 14px;
  height: 14px;
  opacity: 0;
  color: white;
  transition: opacity var(--transition-fast);
}

.criteria-checkbox input:checked + .criteria-checkbox__box {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.criteria-checkbox input:checked + .criteria-checkbox__box svg {
  opacity: 1;
}

.criteria-checkbox__label {
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  line-height: 1.4;
}

.criteria-checkbox--none {
  border-style: dashed;
  background: transparent;
}

/* Framework Card Updates for Metadata */
.framework-card__categories {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.framework-card__category-tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-2);
  background: var(--color-slate-100);
  color: var(--color-slate-700);
  font-size: var(--text-xs);
  font-weight: 500;
  border-radius: var(--radius-sm);
}

.framework-card__metadata {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-3);
  margin-top: var(--space-3);
  margin-bottom: var(--space-3);
}

.framework-card__meta-row {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-2);
}

.framework-card__meta-row:last-child {
  margin-bottom: 0;
}

.framework-card__meta-item {
  display: flex;
  gap: var(--space-2);
  font-size: var(--text-xs);
}

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

.meta-value {
  color: var(--color-text-primary);
  font-weight: 500;
}

.complexity-simple {
  color: #27ae60;
}

.complexity-medium {
  color: var(--color-amber-600);
}

.complexity-advanced {
  color: #e74c3c;
}

/* Form Group Full Width */
.form-group--full-width {
  grid-column: 1 / -1;
}

/* Filter Grid Updates */
.filter-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .category-grid {
    grid-template-columns: 1fr;
  }

  .criteria-grid {
    grid-template-columns: 1fr;
  }

  .framework-card__meta-row {
    flex-direction: column;
    gap: var(--space-1);
  }

  .search-input {
    font-size: var(--text-base);
  }

  .step-header .form-label {
    font-size: var(--text-base);
  }

  .refinement-section {
    padding: var(--space-4);
  }
}

@media (max-width: 480px) {
  .category-card {
    padding: var(--space-4);
  }

  .category-card__icon {
    width: 32px;
    height: 32px;
  }

  .category-card__icon svg {
    width: 16px;
    height: 16px;
  }
}

/* ============================================
   Auto-Suggest Dropdown (Issue #5)
   ============================================ */

.search-input-wrapper {
  position: relative;
}

.auto-suggest-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-height: 400px;
  overflow-y: auto;
  z-index: 1000;
  margin-top: 4px;
  display: none;
}

.auto-suggest-item {
  display: block;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-light);
  text-decoration: none;
  color: var(--color-text-primary);
  transition: background var(--transition-fast);
}

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

.auto-suggest-item:hover {
  background: var(--color-bg-secondary);
}

.auto-suggest-name {
  display: block;
  font-weight: 600;
  color: var(--color-text-primary);
}

.auto-suggest-purpose {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.auto-suggest-empty {
  padding: var(--space-4);
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* ============================================
   Fallback Notice (4-level fallback system)
   ============================================ */

.fallback-notice {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-6);
  grid-column: 1 / -1;
}

.fallback-notice--relaxed-category,
.fallback-notice--relaxed-criteria {
  background: var(--color-info-bg, #eff6ff);
  border: 1px solid var(--color-info-border, #bfdbfe);
}

.fallback-notice--no-match-fallback {
  background: var(--color-warning-bg, #fffbeb);
  border: 1px solid var(--color-warning-border, #fde68a);
}

.fallback-notice__icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  color: var(--color-info, #3b82f6);
}

.fallback-notice--no-match-fallback .fallback-notice__icon {
  color: var(--color-warning, #f59e0b);
}

.fallback-notice__content {
  flex: 1;
}

.fallback-notice__title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 var(--space-1) 0;
}

.fallback-notice__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.5;
}

/* Category tag variants for primary/secondary */
.framework-card__category-tag--primary {
  background: var(--color-primary-light, #e0e7ff);
  color: var(--color-primary-dark, #3730a3);
}

.framework-card__category-tag--secondary {
  background: var(--color-bg-tertiary, #f3f4f6);
  color: var(--color-text-secondary);
  border: 1px dashed var(--color-border);
}

/* ============================================
   SEMANTIC COMPARISON TABLE
   ============================================ */

.comparison-table--semantic {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-6) 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg-primary);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.comparison-table--semantic thead {
  background: linear-gradient(135deg, var(--color-slate-800), var(--color-slate-900));
  color: white;
}

.comparison-table--semantic th {
  padding: var(--space-4);
  text-align: left;
  font-weight: 600;
  font-size: 1rem;
  border-bottom: 2px solid var(--color-amber-500);
}

.comparison-table--semantic th a {
  color: var(--color-amber-400);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.comparison-table--semantic th a:hover {
  color: var(--color-amber-300);
  text-decoration: underline;
}

.comparison-table--semantic td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-light, #e5e7eb);
  color: var(--color-text-primary);
  font-size: 0.95rem;
  line-height: 1.5;
  vertical-align: top;
}

.comparison-table--semantic tbody tr:hover {
  background: var(--color-bg-secondary, #f9fafb);
}

.comparison-table__label-col {
  width: 160px;
  min-width: 140px;
}

.comparison-table__row-label {
  font-weight: 600;
  background: var(--color-bg-secondary, #f9fafb);
  color: var(--color-text-secondary);
}

/* Section Headers */
.comparison-table__section-header {
  background: var(--color-bg-tertiary, #f3f4f6) !important;
}

.comparison-table__section-header td {
  padding: var(--space-2) var(--space-4);
  border-bottom: 2px solid var(--color-border);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

.section-label--positioning {
  background: rgba(59, 130, 246, 0.1);
  color: #2563eb;
}

.section-label--implementation {
  background: rgba(16, 185, 129, 0.1);
  color: #059669;
}

.section-label--value {
  background: rgba(245, 158, 11, 0.1);
  color: #d97706;
}

/* Row styling by section */
.comparison-table--semantic tbody tr:not(.comparison-table__section-header) td:first-child {
  font-weight: 500;
}

/* Helper text styling */
.plus-more {
  font-size: 0.85em;
  color: var(--color-text-muted);
  font-weight: 500;
}

.also-scope {
  font-size: 0.85em;
  color: var(--color-text-muted);
}

/* ============================================
   COMPARISON INSIGHTS
   ============================================ */

.comparison-insights {
  margin-top: var(--space-8);
  padding: var(--space-6);
  background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-tertiary) 100%);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
}

.comparison-insights__title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-5) 0;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.comparison-insights__title svg {
  color: var(--color-primary);
}

.insights-grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.insight-card {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-bg-primary);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.insight-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.insight-card__icon {
  font-size: 1.5rem;
  line-height: 1;
  flex-shrink: 0;
}

.insight-card__content {
  flex: 1;
}

.insight-card__title {
  display: block;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.insight-card__text {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.insight-card__text strong {
  color: var(--color-primary);
  font-weight: 600;
}

/* ============================================
   COMPARISON PAGE LAYOUT
   ============================================ */

.comparison-section {
  padding: var(--space-8) 0 var(--space-12);
}

.comparison-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.comparison-header__title {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--color-text-primary);
  margin: 0 0 var(--space-4);
}

.comparison-header__frameworks {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.comparison-header__framework {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary-light, #e0e7ff);
  color: var(--color-primary-dark, #3730a3);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9rem;
}

.comparison-table-wrapper {
  overflow-x: auto;
  margin: 0 calc(-1 * var(--space-4));
  padding: 0 var(--space-4);
}

.comparison-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-8);
  flex-wrap: wrap;
}

/* ============================================
   RESPONSIVE COMPARISON TABLE
   ============================================ */

@media (max-width: 768px) {
  .comparison-table--semantic {
    font-size: 0.875rem;
  }

  .comparison-table--semantic th,
  .comparison-table--semantic td {
    padding: var(--space-2) var(--space-3);
  }

  .comparison-table__label-col {
    width: 120px;
    min-width: 100px;
  }

  .comparison-header__title {
    font-size: 1.5rem;
  }

  .comparison-insights {
    padding: var(--space-4);
  }

  .insights-grid {
    grid-template-columns: 1fr;
  }

  .insight-card {
    padding: var(--space-3);
  }

  .comparison-actions {
    flex-direction: column;
  }

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

@media (max-width: 480px) {
  .comparison-table--semantic th,
  .comparison-table--semantic td {
    padding: var(--space-2);
    font-size: 0.8rem;
  }

  .comparison-table__label-col {
    width: 90px;
    min-width: 80px;
  }

  .section-label {
    font-size: 0.7rem;
    padding: 2px 6px;
  }
}

/* ============================================
   DEBUG PANEL (v1.2)
   ============================================ */

.debug-panel {
  position: fixed;
  bottom: 70px;
  right: 20px;
  width: 380px;
  max-height: 500px;
  background: var(--color-bg-primary, #fff);
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius-lg, 12px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
  z-index: 10000;
  overflow: hidden;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 12px;
}

.debug-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border, #e5e7eb);
  background: var(--color-bg-secondary, #f9fafb);
  position: sticky;
  top: 0;
}

.debug-header h3 {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-primary, #111827);
}

.debug-close {
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  color: var(--color-text-muted, #9ca3af);
  padding: 4px 8px;
  border-radius: 4px;
  transition: background 0.2s;
}

.debug-close:hover {
  background: var(--color-bg-tertiary, #f3f4f6);
  color: var(--color-text-primary, #111827);
}

.debug-content {
  padding: 16px;
  max-height: 420px;
  overflow-y: auto;
}

.debug-section {
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border-light, #f3f4f6);
}

.debug-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.debug-section h4 {
  margin: 0 0 12px 0;
  font-size: 11px;
  font-weight: 700;
  color: var(--color-text-secondary, #6b7280);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.debug-section p {
  margin: 6px 0;
  line-height: 1.5;
  color: var(--color-text-primary, #111827);
}

.debug-section ul {
  margin: 8px 0;
  padding-left: 16px;
}

.debug-section li {
  margin: 4px 0;
  list-style: disc;
}

.debug-toggle {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 9999;
  padding: 10px 16px;
  background: var(--color-text-primary, #1f2937);
  color: #fff;
  border: none;
  border-radius: var(--radius-full, 9999px);
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: transform 0.2s, box-shadow 0.2s;
}

.debug-toggle:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

/* Debug panel responsive */
@media (max-width: 480px) {
  .debug-panel {
    width: calc(100% - 40px);
    left: 20px;
    right: 20px;
    bottom: 70px;
  }
  
  .debug-toggle {
    padding: 8px 12px;
    font-size: 11px;
  }
}

/* ============================================
   FALLBACK MESSAGE STYLES (v1.2)
   ============================================ */

.fallback-message--progressive {
  background: linear-gradient(135deg, #fef3c7 0%, #fef9c3 100%);
  border-left-color: #f59e0b;
}

.fallback-message--progressive .fallback-notice__icon {
  color: #f59e0b;
}

/* ============================================
   CATEGORY PAGES STYLES
   ============================================ */

/* Breadcrumb */
.breadcrumb {
  padding: var(--space-4) 0;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.breadcrumb a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.breadcrumb__separator {
  margin: 0 var(--space-2);
  color: var(--color-text-muted);
}

.breadcrumb__current {
  color: var(--color-text-primary);
  font-weight: 500;
}

/* Categories Landing Hero */
.categories-hero {
  background: linear-gradient(135deg, var(--color-slate-900) 0%, var(--color-slate-800) 100%);
  color: var(--color-text-inverse);
  padding: var(--space-16) 0;
  text-align: center;
}

.categories-hero__title {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
  color: #ffffff;
}

.categories-hero__subtitle {
  font-size: var(--text-lg);
  color: var(--color-slate-300);
  max-width: 600px;
  margin: 0 auto;
}

/* Two Paths Section */
.categories-paths {
  padding: var(--space-16) 0;
  background: var(--color-bg-secondary);
}

.paths-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}

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

@media (max-width: 576px) {
  .path-card {
    padding: var(--space-5);
  }
  
  .path-card__icon {
    width: 40px;
    height: 40px;
  }
  
  .path-card__icon svg {
    width: 20px;
    height: 20px;
  }
  
  .path-card__title {
    font-size: var(--text-xl);
  }
  
  .path-card__description {
    font-size: var(--text-sm);
  }
}

.path-card {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all var(--transition-base);
}

.path-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-lg);
}

.path-card__icon {
  width: 48px;
  height: 48px;
  background: var(--color-amber-100);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
}

.path-card__icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-amber-600);
}

.path-card__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  margin-bottom: var(--space-3);
}

.path-card__description {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.path-card__benefits {
  list-style: none;
  margin-bottom: var(--space-6);
}

.path-card__benefits li {
  position: relative;
  padding-left: var(--space-6);
  margin-bottom: var(--space-2);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}

.path-card__benefits li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 600;
}

.path-card__link {
  color: var(--color-accent);
  font-weight: 600;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.path-card__link:hover {
  color: var(--color-amber-500);
}

/* Categories Section */
.categories-section {
  padding: var(--space-16) 0;
}

.categories-section--alt {
  background: var(--color-bg-tertiary);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.section-header__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  margin-bottom: var(--space-3);
}

.section-header__description {
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Category Cards Grid */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

@media (max-width: 992px) {
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .categories-grid {
    grid-template-columns: 1fr;
  }
  
  .category-card {
    padding: var(--space-4);
  }
  
  .category-card__icon {
    width: 36px;
    height: 36px;
    margin-bottom: var(--space-3);
  }
  
  .category-card__icon svg {
    width: 18px;
    height: 18px;
  }
  
  .category-card__title {
    font-size: var(--text-lg);
  }
}

.category-card {
  display: block;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-base);
}

.category-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.category-card__icon {
  width: 40px;
  height: 40px;
  background: var(--color-amber-100);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
}

.category-card__icon svg {
  width: 20px;
  height: 20px;
  color: var(--color-amber-600);
}

.category-card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
}

.category-card__description {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  margin-bottom: var(--space-3);
}

.category-card__count {
  display: inline-block;
  background: var(--color-slate-100);
  color: var(--color-text-secondary);
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  font-weight: 500;
}

/* Problems Grid */
.problems-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

@media (max-width: 992px) {
  .problems-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .problems-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .problems-grid {
    grid-template-columns: 1fr;
  }
  
  .problem-card {
    padding: var(--space-4);
  }
  
  .problem-card__icon {
    width: 28px;
    height: 28px;
  }
  
  .problem-card__icon svg {
    width: 14px;
    height: 14px;
  }
}

.problem-card {
  display: block;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-base);
}

.problem-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.problem-card__icon {
  width: 32px;
  height: 32px;
  background: var(--color-slate-100);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-3);
}

.problem-card__icon svg {
  width: 16px;
  height: 16px;
  color: var(--color-slate-600);
}

.problem-card__title {
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.problem-card__count {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* Guide Section */
.categories-guide {
  padding: var(--space-16) 0;
  background: var(--color-bg-secondary);
}

.categories-guide__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  text-align: center;
  margin-bottom: var(--space-10);
}

.guide-scenarios {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

@media (max-width: 992px) {
  .guide-scenarios {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  .categories-guide {
    padding: var(--space-10) 0;
  }
  
  .categories-guide__title {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-6);
  }
  
  .scenario-card {
    padding: var(--space-4);
  }
  
  .scenario-card__title {
    font-size: var(--text-base);
  }
  
  .section-header__title {
    font-size: var(--text-2xl);
  }
}

.scenario-card {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.scenario-card__title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--color-text-primary);
}

.scenario-card__text {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.scenario-card__example {
  background: var(--color-slate-100);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  font-size: var(--text-sm);
}

.scenario-card__label {
  font-weight: 600;
  color: var(--color-text-secondary);
}

/* Stats Section */
.categories-stats {
  padding: var(--space-12) 0;
  background: var(--color-slate-900);
  color: var(--color-text-inverse);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  text-align: center;
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.stat-card__number {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  color: var(--color-amber-400);
  margin-bottom: var(--space-2);
}

.stat-card__label {
  font-size: var(--text-sm);
  color: var(--color-slate-400);
}

/* Category Page Hero */
.category-hero,
.problem-hero {
  background: linear-gradient(135deg, var(--color-slate-900) 0%, var(--color-slate-800) 100%);
  color: var(--color-text-inverse);
  padding: var(--space-12) 0;
  text-align: center;
}

.category-hero__icon,
.problem-hero__icon {
  width: 64px;
  height: 64px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-6);
}

.category-hero__icon svg,
.problem-hero__icon svg {
  width: 32px;
  height: 32px;
  color: var(--color-amber-400);
}

.category-hero__title,
.problem-hero__title {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  margin-bottom: var(--space-3);
  color: #ffffff;
}

.category-hero__subtitle,
.problem-hero__subtitle {
  font-size: var(--text-lg);
  color: var(--color-slate-300);
  margin-bottom: var(--space-4);
}

.category-hero__stat,
.problem-hero__stat {
  display: inline-block;
  background: rgba(255, 255, 255, 0.1);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-amber-300);
}

/* Mobile styles for category/problem hero */
@media (max-width: 576px) {
  .category-hero,
  .problem-hero {
    padding: var(--space-8) 0;
  }
  
  .category-hero__icon,
  .problem-hero__icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-4);
  }
  
  .category-hero__icon svg,
  .problem-hero__icon svg {
    width: 24px;
    height: 24px;
  }
  
  .category-hero__title,
  .problem-hero__title {
    font-size: var(--text-2xl);
  }
  
  .category-hero__subtitle,
  .problem-hero__subtitle {
    font-size: var(--text-base);
  }
  
  .categories-hero {
    padding: var(--space-8) 0;
  }
  
  .categories-hero__title {
    font-size: var(--text-2xl);
  }
  
  .categories-hero__subtitle {
    font-size: var(--text-base);
    padding: 0 var(--space-4);
  }
}

/* Category Description */
.category-description,
.problem-description {
  padding: var(--space-12) 0;
  background: var(--color-bg-secondary);
}

.category-description h2,
.problem-description h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  margin-bottom: var(--space-4);
}

.category-description h3,
.problem-description h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
}

.category-description p,
.problem-description p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
  line-height: 1.7;
}

.category-description__list,
.problem-description__list {
  list-style: none;
  margin: var(--space-4) 0;
}

.category-description__list li,
.problem-description__list li {
  position: relative;
  padding-left: var(--space-6);
  margin-bottom: var(--space-3);
  color: var(--color-text-secondary);
}

.category-description__list li::before,
.problem-description__list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: bold;
}

/* Frameworks Section */
.category-frameworks,
.problem-frameworks {
  padding: var(--space-12) 0;
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  margin-bottom: var(--space-3);
}

.section-description {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
}

.frameworks-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

@media (max-width: 992px) {
  .frameworks-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .frameworks-grid {
    grid-template-columns: 1fr;
  }
}

.framework-card {
  display: block;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-base);
}

.framework-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.framework-card--primary {
  border-left: 3px solid var(--color-accent);
}

.framework-card--popular {
  border-left: 3px solid var(--color-amber-500);
}

.framework-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-3);
}

.framework-card__title {
  font-size: var(--text-lg);
  font-weight: 600;
}

.framework-card__badge {
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  background: var(--color-amber-100);
  color: var(--color-amber-600);
  font-weight: 500;
}

.framework-card__badge--secondary {
  background: var(--color-slate-100);
  color: var(--color-slate-600);
}

.framework-card__badge--popular {
  background: var(--color-amber-100);
  color: var(--color-amber-600);
}

.framework-card__description {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
  line-height: 1.5;
}

.framework-card__meta {
  display: flex;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.framework-card__complexity {
  background: var(--color-slate-100);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

/* Comparison Table */
.category-comparison,
.problem-comparison {
  padding: var(--space-12) 0;
  background: var(--color-bg-tertiary);
}

.comparison-table-wrapper {
  overflow-x: auto;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.comparison-table th,
.comparison-table td {
  padding: var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.comparison-table th {
  background: var(--color-slate-100);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.comparison-table td {
  font-size: var(--text-sm);
}

.comparison-table td a {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
}

.comparison-table td a:hover {
  text-decoration: underline;
}

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

/* Related and Others Sections */
.category-related,
.problem-related,
.category-others,
.problem-others {
  padding: var(--space-12) 0;
}

.category-others,
.problem-others {
  background: var(--color-bg-tertiary);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

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

.related-card {
  display: block;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-base);
}

.related-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.related-card__title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.related-card__description {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  margin-bottom: var(--space-3);
}

.related-card__count {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.others-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-4);
}

@media (max-width: 992px) {
  .others-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 576px) {
  .others-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.other-category-card,
.other-problem-card {
  display: block;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-base);
}

.other-category-card:hover,
.other-problem-card:hover {
  border-color: var(--color-accent);
}

.other-category-card__title,
.other-problem-card__title {
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.other-category-card__description {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}

.other-category-card__count,
.other-problem-card__count {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* Problem Guide Section */
.problem-guide {
  padding: var(--space-12) 0;
  background: var(--color-bg-secondary);
}

.guide-decision {
  display: grid;
  gap: var(--space-4);
}

.decision-card {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.decision-card h4 {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--color-text-primary);
}

.decision-card p {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  line-height: 1.6;
}

.decision-card a {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
}

.decision-card a:hover {
  text-decoration: underline;
}

/* Narrow container for descriptions */
.container--narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
}