/* ============================================
   GUÍA INFONAVIT — Design System
   Sistema de diseño completo para sitio SEO
   ============================================ */

/* Top Disclaimer Bar for Anti-Phishing & Google Safe Browsing Compliance */
.top-disclaimer-bar {
  background: #FFF8E1;
  color: #5D4037;
  border-bottom: 1px solid #FFE082;
  padding: 6px 16px;
  font-size: 13px;
  text-align: center;
  font-weight: 500;
  line-height: 1.4;
}
.top-disclaimer-bar strong {
  color: #3E2723;
  font-weight: 700;
}
.top-disclaimer-bar a {
  color: #D84315;
  text-decoration: underline;
  font-weight: 600;
}

/* === GOOGLE FONTS IMPORT === */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

/* === CSS CUSTOM PROPERTIES === */
:root {
  /* — Colors — */
  --color-primary: #1B5E20;
  --color-primary-light: #2E7D32;
  --color-primary-lighter: #4CAF50;
  --color-primary-subtle: #E8F5E9;
  --color-primary-glow: rgba(76, 175, 80, 0.15);

  --color-secondary: #0D47A1;
  --color-secondary-light: #1565C0;
  --color-secondary-subtle: #E3F2FD;

  --color-accent: #F59E0B;
  --color-accent-light: #FCD34D;
  --color-accent-subtle: #FEF3C7;

  --color-error: #DC2626;
  --color-error-subtle: #FEE2E2;

  --color-bg: #FAFAFA;
  --color-bg-alt: #F0F2F5;
  --color-bg-dark: #0F1419;
  --color-bg-card: #FFFFFF;

  --color-text: #1A1A2E;
  --color-text-secondary: #6B7280;
  --color-text-muted: #9CA3AF;
  --color-text-inverse: #FFFFFF;

  --color-border: #E5E7EB;
  --color-border-light: #F3F4F6;

  /* — Typography — */
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 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;

  --leading-tight: 1.2;
  --leading-snug: 1.35;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;

  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-extrabold: 800;

  /* — Spacing — */
  --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;

  /* — Layout — */
  --container-max: 1200px;
  --container-narrow: 800px;
  --container-padding: var(--space-6);

  /* — Borders — */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* — Shadows — */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-card-hover: 0 10px 30px rgba(0, 0, 0, 0.1), 0 4px 8px rgba(0, 0, 0, 0.05);

  /* — Transitions — */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* — Z-index — */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
}

/* === RESET & BASE === */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: var(--leading-tight);
  color: var(--color-text);
  font-weight: var(--weight-bold);
}

/* === LAYOUT === */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

.section {
  padding: var(--space-16) 0;
}

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

.section--dark {
  background-color: var(--color-bg-dark);
  color: var(--color-text-inverse);
}

/* === SKIP LINK (Accessibility) === */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-3) var(--space-6);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  z-index: var(--z-toast);
  font-weight: var(--weight-semibold);
}

.skip-link:focus {
  top: 0;
  color: var(--color-text-inverse);
}

/* === HEADER === */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition-base);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

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

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

.site-logo__icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-lighter));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: var(--weight-extrabold);
  font-size: var(--text-lg);
  flex-shrink: 0;
}

.site-logo__text {
  font-size: var(--text-xl);
  font-weight: var(--weight-extrabold);
  letter-spacing: -0.02em;
}

.site-logo__text span {
  color: var(--color-primary);
}

/* — Main Nav — */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.main-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.main-nav__link {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.main-nav__link:hover,
.main-nav__link.active {
  color: var(--color-primary);
  background-color: var(--color-primary-subtle);
}

/* — Search Button — */
.search-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.search-toggle:hover {
  background-color: var(--color-bg-alt);
  color: var(--color-text);
}

/* — Mobile Menu Toggle — */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  gap: 5px;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.menu-toggle:hover {
  background-color: var(--color-bg-alt);
}

.menu-toggle__bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  transform-origin: center;
}

.menu-toggle.active .menu-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active .menu-toggle__bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.menu-toggle.active .menu-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* === BREADCRUMBS === */
.breadcrumbs {
  padding: var(--space-4) 0;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.breadcrumbs__list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
}

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

.breadcrumbs__link {
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

.breadcrumbs__current {
  color: var(--color-text);
  font-weight: var(--weight-medium);
}

/* === HERO SECTION === */
.hero {
  padding: var(--space-16) 0 var(--space-12);
  background: linear-gradient(180deg, var(--color-primary-subtle) 0%, var(--color-bg) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-primary-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero__content {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-12);
  position: relative;
  z-index: 1;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-primary);
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.hero__badge-dot {
  width: 8px;
  height: 8px;
  background: var(--color-primary-lighter);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero__title {
  font-size: var(--text-4xl);
  font-weight: var(--weight-extrabold);
  letter-spacing: -0.03em;
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

.hero__title-accent {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-lighter));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 560px;
  margin: 0 auto;
}

/* — Hub Cards Grid (3-2 centered layout) — */
.hub-cards {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-6);
  position: relative;
  z-index: 1;
}

.hub-card {
  grid-column: span 2;
}

/* Center the last 2 cards in the second row */
.hub-card:nth-child(4) {
  grid-column: 2 / span 2;
}

.hub-card:nth-child(5) {
  grid-column: 4 / span 2;
}

.hub-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
  text-decoration: none;
  color: var(--color-text);
  position: relative;
  overflow: hidden;
}

.hub-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--hub-color, var(--color-primary)), var(--hub-color-light, var(--color-primary-lighter)));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.hub-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: transparent;
  color: var(--color-text);
}

.hub-card:hover::before {
  opacity: 1;
}

.hub-card__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-4);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl);
  background: var(--hub-bg, var(--color-primary-subtle));
  color: var(--hub-color, var(--color-primary));
  transition: transform var(--transition-spring);
}

.hub-card:hover .hub-card__icon {
  transform: scale(1.1);
}

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

.hub-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
}

.hub-card__arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-primary);
  transition: gap var(--transition-base);
}

.hub-card:hover .hub-card__arrow {
  gap: var(--space-3);
}

/* Hub card color variants */
.hub-card--creditos {
  --hub-color: #1B5E20;
  --hub-color-light: #4CAF50;
  --hub-bg: #E8F5E9;
}

.hub-card--mejoravit {
  --hub-color: #0D47A1;
  --hub-color-light: #42A5F5;
  --hub-bg: #E3F2FD;
}

.hub-card--puntos {
  --hub-color: #E65100;
  --hub-color-light: #FF9800;
  --hub-bg: #FFF3E0;
}

.hub-card--cuenta {
  --hub-color: #4A148C;
  --hub-color-light: #AB47BC;
  --hub-bg: #F3E5F5;
}

.hub-card--tramites {
  --hub-color: #B71C1C;
  --hub-color-light: #EF5350;
  --hub-bg: #FFEBEE;
}

/* === SECTION HEADERS === */
.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section-header__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
}

.section-header__title {
  font-size: var(--text-3xl);
  font-weight: var(--weight-extrabold);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}

.section-header__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

/* === ARTICLE CARDS === */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.article-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
  text-decoration: none;
  color: var(--color-text);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  color: var(--color-text);
}

.article-card__image {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-bg-alt);
}

.article-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.article-card:hover .article-card__image img {
  transform: scale(1.05);
}

.article-card__category {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.article-card__body {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-card__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  line-height: var(--leading-snug);
  margin-bottom: var(--space-3);
}

.article-card__excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-light);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.article-card__read-more {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-weight: var(--weight-semibold);
  color: var(--color-primary);
  margin-left: auto;
}

/* === FAQ SECTION === */
.faq-list {
  max-width: var(--container-narrow);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.faq-item:hover {
  border-color: var(--color-primary-lighter);
}

.faq-item.active {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.faq-item__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-5) var(--space-6);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  text-align: left;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.faq-item__question:hover {
  color: var(--color-primary);
}

.faq-item__icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--color-bg-alt);
  transition: all var(--transition-base);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.faq-item.active .faq-item__icon {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  transform: rotate(45deg);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.faq-item__answer-inner {
  padding: 0 var(--space-6) var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

.faq-item__answer-inner a {
  color: var(--color-primary);
  font-weight: var(--weight-medium);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* === DISCLAIMER BANNER === */
.disclaimer {
  background: var(--color-accent-subtle);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

.disclaimer__icon {
  flex-shrink: 0;
  font-size: var(--text-xl);
}

.disclaimer__text {
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: var(--leading-normal);
}

.disclaimer__text strong {
  color: var(--color-text);
}

.disclaimer__text a {
  color: var(--color-secondary);
  font-weight: var(--weight-semibold);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* === FOOTER === */
.site-footer {
  background: var(--color-bg-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-16) 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: var(--space-12);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  color: white;
  text-decoration: none;
}

.footer-brand__icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary-lighter), var(--color-primary));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: var(--weight-extrabold);
  font-size: var(--text-base);
}

.footer-brand__name {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: white;
}

.footer-brand__desc {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

.footer-column__title {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: white;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-5);
}

.footer-column__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-column__link {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.footer-column__link:hover {
  color: var(--color-primary-lighter);
}

.footer-bottom {
  padding: var(--space-6) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-bottom__copy {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom__disclaimer {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.4);
  max-width: 500px;
  text-align: right;
}

/* === 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-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.btn--primary:hover {
  background: var(--color-primary-light);
  color: var(--color-text-inverse);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  border: 1.5px solid var(--color-border);
  color: var(--color-text);
  background: var(--color-bg-card);
}

.btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-subtle);
}

.btn--ghost {
  color: var(--color-primary);
}

.btn--ghost:hover {
  background: var(--color-primary-subtle);
}

/* === SEARCH OVERLAY === */
.search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: var(--z-overlay);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 12vh;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.search-overlay.active {
  opacity: 1;
  visibility: visible;
}

.search-overlay__inner {
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  width: 92%;
  max-width: 640px;
  transform: translateY(-20px);
  transition: transform var(--transition-base);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.search-overlay.active .search-overlay__inner {
  transform: translateY(0);
}

.search-overlay__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.search-overlay__input-wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: 1;
}

.search-overlay__icon {
  color: var(--color-primary);
  flex-shrink: 0;
}

.search-overlay__input {
  width: 100%;
  border: none;
  outline: none;
  font-size: var(--text-lg);
  font-family: var(--font-body);
  color: var(--color-text);
  background: transparent;
}

.search-overlay__input::placeholder {
  color: var(--color-text-muted);
}

.search-overlay__close {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-text-secondary);
  font-size: 16px;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.search-overlay__close:hover {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.search-results {
  max-height: 55vh;
  overflow-y: auto;
  margin-top: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding-right: 4px;
}

.search-results::-webkit-scrollbar {
  width: 6px;
}

.search-results::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}

.search-result-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.search-result-item:hover, .search-result-item:focus {
  background: var(--color-primary-subtle);
  border-color: var(--color-primary-subtle);
  transform: translateX(4px);
}

.search-result-item__title {
  font-weight: var(--weight-bold);
  font-size: var(--text-base);
  color: var(--color-text);
}

.search-result-item:hover .search-result-item__title {
  color: var(--color-primary);
}

.search-result-item__badge {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  padding: 2px 10px;
  border-radius: var(--radius-full);
  background: var(--color-primary-subtle);
  color: var(--color-primary);
  flex-shrink: 0;
}

.search-no-results {
  text-align: center;
  padding: var(--space-8) var(--space-4);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}

/* === MOBILE NAV OVERLAY === */
.mobile-nav {
  position: fixed;
  inset: 0;
  top: 72px;
  background: var(--color-bg-card);
  z-index: var(--z-overlay);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  overflow-y: auto;
  padding: var(--space-6);
}

.mobile-nav.active {
  transform: translateX(0);
}

.mobile-nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mobile-nav__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  transition: all var(--transition-fast);
}

.mobile-nav__link:hover,
.mobile-nav__link.active {
  background: var(--color-primary-subtle);
  color: var(--color-primary);
}

.mobile-nav__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-lg);
  flex-shrink: 0;
}

/* === ANIMATIONS === */
@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered animation for grid items */
.animate-on-scroll:nth-child(1) { transition-delay: 0ms; }
.animate-on-scroll:nth-child(2) { transition-delay: 80ms; }
.animate-on-scroll:nth-child(3) { transition-delay: 160ms; }
.animate-on-scroll:nth-child(4) { transition-delay: 240ms; }
.animate-on-scroll:nth-child(5) { transition-delay: 320ms; }

/* === RESPONSIVE === */

/* Tablet */
@media (max-width: 1024px) {
  :root {
    --text-4xl: 2rem;
    --text-3xl: 1.5rem;
  }

  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .hub-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .hub-card,
  .hub-card:nth-child(4),
  .hub-card:nth-child(5) {
    grid-column: span 1;
  }
}

/* Mobile */
@media (max-width: 768px) {
  :root {
    --text-5xl: 2.25rem;
    --text-4xl: 1.75rem;
    --text-3xl: 1.375rem;
    --container-padding: var(--space-4);
  }

  .header-inner {
    height: 60px;
  }

  .site-logo__text {
    font-size: var(--text-lg);
  }

  .hero {
    padding: var(--space-10) 0 var(--space-8);
  }

  .hub-cards {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .hub-card,
  .hub-card:nth-child(4),
  .hub-card:nth-child(5) {
    grid-column: span 1;
    padding: var(--space-5) var(--space-4);
    display: flex;
    align-items: center;
    text-align: left;
    gap: var(--space-4);
  }

  .hub-card__icon {
    margin: 0;
    width: 48px;
    height: 48px;
    flex-shrink: 0;
  }

  .hub-card__content {
    flex: 1;
  }

  .hub-card__arrow {
    margin-top: var(--space-2);
  }

  .articles-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .section {
    padding: var(--space-10) 0;
  }

  .section-header {
    margin-bottom: var(--space-8);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .footer-bottom__disclaimer {
    text-align: center;
    max-width: none;
  }

  .disclaimer {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }
}

/* Small mobile */
@media (max-width: 380px) {
  :root {
    --text-4xl: 1.5rem;
    --text-3xl: 1.25rem;
  }

  .site-logo__icon {
    width: 32px;
    height: 32px;
    font-size: var(--text-sm);
  }

  .site-logo__text {
    font-size: var(--text-base);
  }
}

/* === PRINT === */
@media print {
  .site-header,
  .site-footer,
  .search-overlay,
  .mobile-nav {
    display: none !important;
  }

  body {
    font-size: 12pt;
    color: #000;
    background: #fff;
  }
}