/* ==========================================================================
   CSS Custom Properties (Design Tokens)
   ========================================================================== */

:root {
  /* Colors */
  --color-primary: #dc3545;
  --color-primary-dark: #b02a37;
  --color-dark: #212529;
  --color-dark-lighter: #2d3238;
  --color-light: #f8f9fa;
  --color-white: #ffffff;
  --color-gray: #6c757d;
  --color-gray-light: #adb5bd;
  --color-overlay: rgba(0, 0, 0, 0.5);
  --color-blur-bg: rgba(255, 255, 255, 0.1);
  --color-gold: #ffc107;

  /* Typography */
  --font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-hero: clamp(2.5rem, 8vw, 4.5rem);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* Layout */
  --navbar-height: 100px;
  --container-max-width: 1200px;
  --container-narrow: 800px;
  --border-radius: 0.5rem;
  --border-radius-lg: 1rem;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.4s ease;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.2);
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--navbar-height);
}

body {
  margin: 0;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-light);
  background-color: var(--color-dark);
}

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

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  line-height: 1.2;
}

p {
  margin: 0 0 var(--spacing-sm);
}

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

strong {
  color: var(--color-primary);
}

/* Focus styles for accessibility */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ==========================================================================
   Typography
   ========================================================================== */

.section-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
}

.subsection-title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  padding-top: var(--spacing-xl);
}

.section-intro {
  font-size: var(--font-size-lg);
  color: var(--color-gray-light);
  max-width: var(--container-narrow);
  margin: 0 auto var(--spacing-xl);
  text-align: center;
}

.section-intro a {
  color: var(--color-primary);
}

.section-intro a:hover {
  text-decoration: underline;
}

.lead {
  font-size: var(--font-size-lg);
  line-height: 1.7;
}

/* ==========================================================================
   Navbar
   ========================================================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--spacing-sm) 0;
  transition: background-color var(--transition-medium), backdrop-filter var(--transition-medium);
}

.navbar.bg-transparent {
  background-color: transparent;
}

.navbar.bg-dark {
  background-color: var(--color-dark);
}

.navbar.blur-navbar {
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background-color: var(--color-blur-bg);
}

.navbar.no-blur-navbar {
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  background-color: transparent;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  position: relative;
}

.nav-brand {
  z-index: 1101;
  flex-shrink: 0;
}

.nav-brand img {
  display: block;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-link {
  color: var(--color-light);
  font-size: var(--font-size-sm);
  font-weight: 500;
  padding: var(--spacing-xs) 0;
  position: relative;
  transition: opacity var(--transition-fast);
}

.nav-link:hover {
  opacity: 0.8;
}

.nav-link.active {
  color: var(--color-primary);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-primary);
}

.nav-social {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.nav-social a {
  display: flex;
  transition: transform var(--transition-fast);
}

.nav-social a:hover {
  transform: scale(1.1);
}

.nav-social img {
  display: block;
}

/* Hamburger Menu Toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  z-index: 1101;
}

.hamburger {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-light);
  position: relative;
  transition: background-color var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-light);
  transition: transform var(--transition-medium);
}

.hamburger::before {
  top: -8px;
}

.hamburger::after {
  top: 8px;
}

.nav-toggle[aria-expanded="true"] .hamburger {
  background-color: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile/Desktop visibility helpers */
.mobile-only {
  display: none;
}

.desktop-only {
  display: flex;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  min-height: 100vh;
  background-image: url('Home.jpeg');
  background-size: cover;
  background-position: top center;
  background-repeat: no-repeat;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.5) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: var(--spacing-lg);
}

.hero-subtitle {
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-gray-light);
  margin-bottom: var(--spacing-sm);
}

.hero-title {
  font-size: var(--font-size-hero);
  font-weight: 700;
  color: var(--color-light);
  margin: 0 0 var(--spacing-sm);
  line-height: 1.1;
}

.hero-tagline {
  font-size: var(--font-size-xl);
  color: var(--color-gray-light);
  margin-bottom: var(--spacing-lg);
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.hero-scroll-indicator span {
  display: block;
  width: 24px;
  height: 40px;
  border: 2px solid var(--color-light);
  border-radius: 12px;
  position: relative;
}

.hero-scroll-indicator span::after {
  content: "";
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--color-light);
  border-radius: 2px;
  animation: scroll-indicator 2s ease-in-out infinite;
}

@keyframes scroll-indicator {
  0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
  50% { opacity: 0.5; transform: translateX(-50%) translateY(10px); }
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--border-radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn:hover,
.btn:focus {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

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

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

.btn-dark {
  background-color: var(--color-dark);
  border-color: var(--color-dark);
  color: var(--color-light);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-light);
  color: var(--color-light);
}

.btn-outline:hover {
  background-color: var(--color-light);
  color: var(--color-dark);
}

.btn-full {
  width: 100%;
}

/* ==========================================================================
   Section Base Styles
   ========================================================================== */

section {
  padding: var(--spacing-3xl) 0;
}

.about,
.programs,
.performances,
.gallery,
.support,
.contact {
  background-color: var(--color-dark);
}

/* Alternate section backgrounds */
.programs,
.gallery {
  background-color: var(--color-dark-lighter);
}

/* ==========================================================================
   About Section
   ========================================================================== */

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
}

.about-content p {
  margin-bottom: var(--spacing-md);
}

.about-image-container {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}

.about-image {
  width: 100%;
  object-fit: cover;
}

/* Values Grid */
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.value-card {
  background: var(--color-dark-lighter);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  text-align: center;
}

.value-icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-sm);
}

.value-card h4 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-xs);
}

.value-card p {
  color: var(--color-gray-light);
  font-size: var(--font-size-sm);
}

/* Leadership */
.leadership {
  margin-top: var(--spacing-xl);
}

.leader-card {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  background: var(--color-dark-lighter);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
}

@media (min-width: 768px) {
  .leader-card {
    flex-direction: row;
    align-items: flex-start;
  }
}

.leader-image-placeholder {
  width: 120px;
  height: 120px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-3xl);
  font-weight: 700;
  flex-shrink: 0;
}

.leader-info h4 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-xs);
}

.leader-title {
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.leader-info p {
  color: var(--color-gray-light);
}

/* Lineage */
.lineage {
  margin-top: var(--spacing-xl);
}

.lineage-path {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.lineage-item {
  background: var(--color-dark-lighter);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  text-align: center;
  min-width: 180px;
}

.lineage-item.active {
  background: var(--color-primary);
}

.lineage-name {
  display: block;
  font-weight: 600;
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
}

.lineage-name .chinese {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 400;
  opacity: 0.8;
  margin-top: 2px;
}

.lineage-desc {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-gray-light);
}

.lineage-item.active .lineage-desc {
  color: rgba(255,255,255,0.8);
}

.lineage-arrow {
  font-size: var(--font-size-2xl);
  color: var(--color-gray);
}

@media (max-width: 768px) {
  .lineage-arrow {
    transform: rotate(90deg);
  }
}

/* ==========================================================================
   Programs Section
   ========================================================================== */

.programs-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
}

@media (min-width: 992px) {
  .programs-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.program-card {
  background: var(--color-dark);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}

.program-image {
  height: 200px;
  overflow: hidden;
}

.program-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.program-content {
  padding: var(--spacing-lg);
}

.program-content h4 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-xs);
}

.program-style {
  color: var(--color-primary);
  font-weight: 600;
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-md);
}

.program-features {
  margin: var(--spacing-md) 0;
  padding-left: var(--spacing-md);
}

.program-features li {
  position: relative;
  padding-left: var(--spacing-md);
  margin-bottom: var(--spacing-xs);
  color: var(--color-gray-light);
}

.program-features li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--color-primary);
}

.program-note {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  font-style: italic;
}

.tradition-highlight {
  background: var(--color-dark-lighter);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  margin-top: var(--spacing-md);
  border-left: 3px solid var(--color-gold);
}

.tradition-highlight h5 {
  color: var(--color-gold);
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-xs);
}

.tradition-highlight p {
  font-size: var(--font-size-sm);
  color: var(--color-gray-light);
}

/* Youth Focus */
.youth-focus {
  margin-top: var(--spacing-xl);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
}

.youth-focus h4 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
}

.youth-focus p {
  max-width: 600px;
  margin: 0 auto;
  opacity: 0.9;
}

/* ==========================================================================
   Performances Section
   ========================================================================== */

.venues-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.venue-card {
  background: var(--color-dark-lighter);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  text-align: center;
  transition: transform var(--transition-fast);
}

.venue-card:hover {
  transform: translateY(-4px);
}

.venue-icon {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-sm);
}

.venue-card h4 {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-xs);
}

.venue-card p {
  font-size: var(--font-size-sm);
  color: var(--color-gray-light);
}

/* Collaboration Highlight */
.collab-highlight {
  background: var(--color-dark-lighter);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  border-left: 4px solid var(--color-gold);
}

.collab-label {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gold);
  margin-bottom: var(--spacing-sm);
}

.collab-content h4 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
}

.collab-content p {
  color: var(--color-gray-light);
}

/* Booking CTA */
.booking-cta {
  text-align: center;
  background: linear-gradient(135deg, var(--color-dark-lighter) 0%, var(--color-dark) 100%);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  border: 1px solid rgba(255,255,255,0.1);
}

.booking-cta h4 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
}

.booking-cta p {
  color: var(--color-gray-light);
  margin-bottom: var(--spacing-md);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ==========================================================================
   Gallery Section
   ========================================================================== */

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

@media (min-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
  }
}

.gallery-item {
  aspect-ratio: 1;
  border-radius: var(--border-radius);
  overflow: hidden;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-medium);
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-item-large {
  grid-column: span 2;
  grid-row: span 2;
  aspect-ratio: auto;
}

.gallery-placeholder {
  background: var(--color-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 2px dashed var(--color-gray);
}

.gallery-placeholder span {
  font-size: var(--font-size-3xl);
  color: var(--color-gray);
}

.gallery-placeholder p {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
}

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

/* ==========================================================================
   Support Section
   ========================================================================== */

.support-content {
  max-width: var(--container-narrow);
  margin: 0 auto;
  text-align: center;
}

.support-content .lead {
  margin-bottom: var(--spacing-md);
}

.support-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin: var(--spacing-xl) 0;
}

.support-card {
  background: var(--color-dark-lighter);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  text-align: center;
}

.support-card h4 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-xs);
}

.support-card p {
  color: var(--color-gray-light);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-sm);
}

.support-social {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
}

.support-social a {
  transition: transform var(--transition-fast);
}

.support-social a:hover {
  transform: scale(1.1);
}

.tax-note {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
}

/* ==========================================================================
   Contact Section
   ========================================================================== */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
}

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

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.contact-card {
  background: var(--color-dark-lighter);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
}

.contact-card h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
}

.contact-card p {
  color: var(--color-gray-light);
  font-size: var(--font-size-sm);
}

.contact-social h4 {
  margin-bottom: var(--spacing-sm);
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
}

.social-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-gray-light);
  transition: color var(--transition-fast);
}

.social-link:hover {
  color: var(--color-light);
}

/* Contact Form */
.contact-form-container {
  background: var(--color-dark-lighter);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

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

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.75rem 1rem;
  font-size: var(--font-size-base);
  font-family: inherit;
  background: var(--color-dark);
  border: 1px solid var(--color-gray);
  border-radius: var(--border-radius);
  color: var(--color-light);
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-group select {
  cursor: pointer;
}

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

.form-note {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  text-align: center;
  margin-top: var(--spacing-sm);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  background-color: var(--color-primary);
  color: var(--color-light);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-brand img {
  margin-bottom: var(--spacing-sm);
}

.footer-brand p {
  font-weight: 600;
}

.footer-tagline {
  opacity: 0.8;
  font-size: var(--font-size-sm);
}

.footer-links h5,
.footer-social-section h5 {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-sm);
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer-links a {
  opacity: 0.8;
  transition: opacity var(--transition-fast);
}

.footer-links a:hover {
  opacity: 1;
}

.footer-social {
  display: flex;
  gap: var(--spacing-sm);
}

.footer-social a {
  transition: transform var(--transition-fast);
}

.footer-social a:hover {
  transform: scale(1.1);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.2);
  padding-top: var(--spacing-lg);
  text-align: center;
}

.footer-copyright {
  font-size: var(--font-size-sm);
  opacity: 0.9;
}

.footer-nonprofit {
  font-size: var(--font-size-xs);
  opacity: 0.7;
}

/* ==========================================================================
   Utility: No Scroll (when mobile menu is open)
   ========================================================================== */

.no-scroll {
  overflow: hidden;
  height: 100vh;
}

/* ==========================================================================
   Responsive Styles
   ========================================================================== */

@media (max-width: 768px) {
  :root {
    --spacing-3xl: 4rem;
  }

  .nav-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    background-color: rgba(33, 37, 41, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transform: translateY(-100%);
    visibility: hidden;
    opacity: 0;
    transition: transform var(--transition-slow), visibility var(--transition-slow), opacity var(--transition-slow);
    z-index: 1050;
  }

  .nav-menu.open {
    transform: translateY(0);
    visibility: visible;
    opacity: 1;
  }

  .nav-menu .nav-link {
    font-size: var(--font-size-xl);
    padding: var(--spacing-sm);
  }

  .mobile-only {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
  }

  .desktop-only {
    display: none !important;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .hero-buttons .btn {
    width: 100%;
    max-width: 280px;
  }

  .section-title {
    font-size: var(--font-size-2xl);
  }

  .lineage-path {
    flex-direction: column;
  }

  .lineage-item {
    width: 100%;
    max-width: 300px;
  }
}

@media (min-width: 769px) {
  .nav-menu {
    position: static;
    transform: none;
    background: none;
    backdrop-filter: none;
  }
}