/* =================================================================
   Modern CSS Playground - Enhanced Stylesheet
   Built for Hacktoberfest 2025 with modern design principles
   ================================================================= */

/* === BASE IMPORTS === */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Playfair+Display:wght@400;500;600;700;900&display=swap');

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  line-height: 1.5;
}

body {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background-color: var(--background-color);
  min-height: 100vh;
  transition: all var(--transition-base);
  overflow-x: hidden;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-serif);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--heading-color);
  margin-bottom: var(--space-4);
  letter-spacing: var(--letter-spacing-tight);
}

h1 {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-extrabold);
  margin-bottom: var(--space-6);
}

h2 {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
}

h3 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
}

h4 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
}

p {
  margin-bottom: var(--space-4);
  color: var(--text-secondary);
  max-width: 65ch;
}

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

a:hover,
a:focus {
  color: var(--primary-dark);
  text-decoration: underline;
  outline: 2px solid transparent;
}

a:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* === ACCESSIBILITY === */
.skip-link {
  position: absolute;
  top: -40px;
  left: var(--space-6);
  background: var(--primary-color);
  color: var(--text-on-primary);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-semibold);
  z-index: var(--z-modal);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

/* === LAYOUT UTILITIES === */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 640px) {
  .container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-8);
  }
}

/* === THEME CONTROLS === */
.theme-controls {
  background: var(--surface-variant);
  border-bottom: 1px solid var(--border-light);
  padding: var(--space-3) 0;
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

.theme-controls-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
}

.palette-controls {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.palette-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background: var(--surface-color);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-transform: capitalize;
}

.palette-btn:hover {
  background: var(--surface-2);
  border-color: var(--primary-color);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.palette-btn.active {
  background: var(--primary-color);
  color: var(--text-on-primary);
  border-color: var(--primary-color);
}

.palette-preview {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.palette-preview.ocean { background: linear-gradient(45deg, #0891b2, #67e8f9); }
.palette-preview.forest { background: linear-gradient(45deg, #059669, #6ee7b7); }
.palette-preview.lavender { background: linear-gradient(45deg, #7c3aed, #c4b5fd); }
.palette-preview.sunset { background: linear-gradient(45deg, #ea580c, #fed7aa); }
.palette-preview.dark { background: linear-gradient(45deg, #1a1a2e, #16213e); }

.theme-toggle-btn {
  position: relative;
  padding: var(--space-2);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background: var(--surface-color);
  cursor: pointer;
  transition: all var(--transition-fast);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle-btn:hover {
  background: var(--surface-2);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.theme-icon {
  font-size: var(--font-size-lg);
  transition: all var(--transition-fast);
}

.theme-icon.dark {
  position: absolute;
  opacity: 0;
  transform: rotate(180deg);
}

[data-theme="dark"] .theme-icon.light,
.dark-theme .theme-icon.light {
  opacity: 0;
  transform: rotate(180deg);
}

[data-theme="dark"] .theme-icon.dark,
.dark-theme .theme-icon.dark {
  opacity: 1;
  transform: rotate(0deg);
}

/* === NAVIGATION === */
.navbar {
  background: var(--surface-color);
  border-bottom: 1px solid var(--border-light);
  padding: var(--space-4) 0;
  position: sticky;
  top: 60px;
  z-index: var(--z-sticky);
  backdrop-filter: blur(8px);
}

.navbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar-brand .brand-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--heading-color);
  text-decoration: none;
}

.brand-icon {
  font-size: var(--font-size-2xl);
}

.nav_toggle {
  display: none;
}

.nav_icon {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: var(--space-2);
  gap: var(--space-1);
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-fast);
  border-radius: var(--radius-full);
}

.nav_links {
  display: flex;
  list-style: none;
  gap: var(--space-6);
  align-items: center;
}

.nav-link {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  font-weight: var(--font-weight-medium);
}

.nav-link:hover,
.nav-link.active {
  background: var(--surface-2);
  color: var(--primary-color);
}

.nav-link.btn-outline {
  border: 1px solid var(--primary-color);
  color: var(--primary-color);
}

.nav-link.btn-outline:hover {
  background: var(--primary-color);
  color: var(--text-on-primary);
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav_icon {
    display: flex;
  }

  .nav_links {
    position: fixed;
    top: 120px;
    right: -100%;
    width: 280px;
    height: calc(100vh - 120px);
    background: var(--surface-color);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-8) var(--space-6);
    gap: var(--space-4);
    transition: right var(--transition-base);
    border-left: 1px solid var(--border-light);
    box-shadow: var(--shadow-xl);
  }

  .nav_toggle:checked ~ .nav_links {
    right: 0;
  }

  .nav_toggle:checked ~ .nav_icon .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
  }

  .nav_toggle:checked ~ .nav_icon .hamburger-line:nth-child(2) {
    opacity: 0;
  }

  .nav_toggle:checked ~ .nav_icon .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
  }

  .nav-link {
    width: 100%;
    padding: var(--space-3);
  }
}

/* === HERO SECTION === */
.hero-section {
  padding: var(--space-24) 0 var(--space-20);
  background: linear-gradient(135deg, var(--surface-color) 0%, var(--surface-variant) 100%);
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 20%, var(--primary-color)10 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, var(--accent-color)08 0%, transparent 50%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--primary-color);
  color: var(--text-on-primary);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-6);
  animation: fadeInUp 0.8s ease-out;
}

.hero-title {
  font-size: clamp(var(--font-size-3xl), 8vw, var(--font-size-6xl));
  font-weight: var(--font-weight-extrabold);
  margin-bottom: var(--space-6);
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

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

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-12);
  animation: fadeInUp 0.8s ease-out 0.6s both;
}

.hero-visual {
  display: flex;
  justify-content: center;
  animation: fadeInUp 0.8s ease-out 0.8s both;
}

.hero-card-stack {
  position: relative;
  width: 300px;
  height: 200px;
}

.hero-card {
  position: absolute;
  width: 200px;
  height: 120px;
  background: var(--surface-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.hero-card.card-1 {
  top: 0;
  left: 0;
  z-index: 3;
  animation: float 6s ease-in-out infinite;
}

.hero-card.card-2 {
  top: 20px;
  left: 50px;
  z-index: 2;
  animation: float 6s ease-in-out infinite 2s;
}

.hero-card.card-3 {
  top: 40px;
  left: 100px;
  z-index: 1;
  animation: float 6s ease-in-out infinite 4s;
}

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

.card-icon {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-2);
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.btn-outline:hover {
  background: var(--primary-color);
  color: var(--text-on-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

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

.btn-icon {
  font-size: var(--font-size-sm);
  transition: transform var(--transition-fast);
}

.btn:hover .btn-icon {
  transform: translateX(2px);
}

/* === ANIMATIONS === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes typewriter {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

@keyframes blink {
  0%, 50% {
    border-right-color: transparent;
  }
  51%, 100% {
    border-right-color: var(--primary-color);
  }
}

.typewriter-text {
  display: inline-block;
  overflow: hidden;
  border-right: 2px solid var(--primary-color);
  white-space: nowrap;
  animation: typewriter 4s steps(40) 1s 1 normal both,
             blink 1s steps(2) infinite;
  max-width: fit-content;
}

/* === SECTION UTILITIES === */
.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-title {
  margin-bottom: var(--space-4);
}

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

/* === STATS SECTION === */
.stats-section {
  padding: var(--space-16) 0;
  background: var(--surface-color);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-8);
  max-width: 800px;
  margin: 0 auto;
}

.stat-card {
  text-align: center;
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  background: var(--surface-variant);
  transition: all var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.stat-number {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--primary-color);
  margin-bottom: var(--space-2);
  font-family: var(--font-family-serif);
}

.stat-label {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

/* === COMPONENTS SECTION === */
.components-section {
  padding: var(--space-20) 0;
  background: var(--background-color);
}

.components-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-8);
}

.component-showcase {
  background: var(--surface-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  border: 1px solid var(--border-light);
}

.component-showcase:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color);
}

.component-header {
  padding: var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-light);
}

.component-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin: 0;
}

.component-badge {
  padding: var(--space-1) var(--space-3);
  background: var(--primary-color);
  color: var(--text-on-primary);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

.component-preview {
  height: 300px;
  overflow: hidden;
  position: relative;
}

.component-iframe {
  width: 100%;
  height: 100%;
  border: none;
  background: var(--surface-color);
}

.component-footer {
  padding: var(--space-6);
}

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

.interactive-demo {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-variant);
}

/* === FLIP CARD === */
.flip-card {
  background-color: transparent;
  width: 200px;
  height: 150px;
  perspective: 1000px;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.6s;
  transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner {
  transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  box-shadow: var(--shadow-md);
}

.flip-card-front {
  background: var(--surface-color);
  color: var(--text-primary);
}

.flip-card-back {
  background: var(--primary-color);
  color: var(--text-on-primary);
  transform: rotateY(180deg);
}

.flip-card h4 {
  margin: var(--space-2) 0;
  font-size: var(--font-size-lg);
}

.flip-card p {
  font-size: var(--font-size-sm);
  margin: 0;
}

/* === MODAL === */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  backdrop-filter: blur(4px);
}

.modal-overlay:target {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background: var(--surface-color);
  border-radius: var(--radius-2xl);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.9) translateY(20px);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-2xl);
}

.modal-overlay:target .modal-container {
  transform: scale(1) translateY(0);
}

.modal-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-title {
  margin: 0;
  font-size: var(--font-size-xl);
}

.modal-close {
  font-size: var(--font-size-2xl);
  color: var(--text-muted);
  text-decoration: none;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--surface-2);
  color: var(--text-primary);
}

.modal-body {
  padding: var(--space-6);
}

.modal-content {
  margin-bottom: var(--space-4);
}

.typewriter-demo {
  padding: var(--space-4);
  background: var(--surface-variant);
  border-radius: var(--radius-lg);
  text-align: center;
}

.modal-footer {
  padding: var(--space-6);
  border-top: 1px solid var(--border-light);
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
}

/* === FEATURES SECTION === */
.features-section {
  padding: var(--space-20) 0;
  background: var(--surface-variant);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
}

.feature-card {
  background: var(--surface-color);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  text-align: center;
  transition: all var(--transition-base);
  border: 1px solid var(--border-light);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.feature-icon {
  width: 64px;
  height: 64px;
  background: var(--primary-color);
  border-radius: var(--radius-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
  font-size: var(--font-size-2xl);
}

.feature-title {
  margin-bottom: var(--space-3);
  font-size: var(--font-size-xl);
}

.feature-description {
  color: var(--text-secondary);
  margin: 0;
}

/* === CTA SECTION === */
.cta-section {
  padding: var(--space-20) 0;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--text-on-primary);
  text-align: center;
}

.cta-content {
  max-width: 700px;
  margin: 0 auto;
}

.cta-title {
  color: var(--text-on-primary);
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-4);
}

.cta-description {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-8);
  opacity: 0.9;
}

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

.cta-section .btn-outline {
  border-color: var(--text-on-primary);
  color: var(--text-on-primary);
}

.cta-section .btn-outline:hover {
  background: var(--text-on-primary);
  color: var(--primary-color);
}

/* === FOOTER === */
.footer {
  background: var(--gray-900);
  color: var(--gray-100);
  padding: var(--space-16) 0 var(--space-8);
}

.footer-content {
  color: var(--gray-100);
}

.footer-main {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer-brand {
  max-width: 400px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-4);
}

.footer-description {
  color: var(--gray-300);
  margin-bottom: var(--space-6);
  line-height: var(--line-height-relaxed);
}

.footer-social {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.social-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--gray-800);
  border-radius: var(--radius-lg);
  color: var(--gray-300);
  text-decoration: none;
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.social-link:hover {
  background: var(--gray-700);
  color: var(--gray-100);
  transform: translateY(-2px);
}

.social-icon {
  font-size: var(--font-size-base);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-8);
}

.footer-heading {
  color: var(--gray-100);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-4);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

.footer-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-list li {
  margin-bottom: var(--space-2);
}

.footer-link {
  color: var(--gray-400);
  text-decoration: none;
  transition: color var(--transition-fast);
  font-size: var(--font-size-sm);
}

.footer-link:hover {
  color: var(--gray-100);
}

.footer-bottom {
  border-top: 1px solid var(--gray-800);
  padding-top: var(--space-8);
}

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

.footer-copyright {
  color: var(--gray-400);
  font-size: var(--font-size-sm);
}

.hacktoberfest-link {
  color: var(--accent-color);
  font-weight: var(--font-weight-semibold);
}

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

.footer-meta-link {
  color: var(--gray-400);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer-meta-link:hover {
  color: var(--gray-200);
}

.footer-divider {
  color: var(--gray-600);
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 768px) {
  .hero-section {
    padding: var(--space-16) 0 var(--space-12);
  }

  .hero-title {
    font-size: var(--font-size-3xl);
  }

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

  .hero-card-stack {
    width: 250px;
    height: 150px;
  }

  .hero-card {
    width: 150px;
    height: 100px;
  }

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

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

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }

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

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

  .theme-controls-inner {
    flex-direction: column;
    gap: var(--space-3);
  }

  .palette-controls {
    justify-content: center;
  }

  .cta-actions {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-3);
  }

  .hero-badge {
    font-size: var(--font-size-xs);
  }

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

  .palette-btn {
    padding: var(--space-1-5) var(--space-2-5);
    font-size: var(--font-size-xs);
  }

  .palette-preview {
    width: 8px;
    height: 8px;
  }
}

/* === PRINT STYLES === */
@media print {
  .theme-controls,
  .navbar,
  .hero-visual,
  .modal-overlay,
  .footer-social {
    display: none;
  }

  body {
    font-size: 12pt;
    line-height: 1.4;
    color: #000;
    background: #fff;
  }

  .hero-section {
    background: none;
  }

  .btn {
    border: 1px solid #000;
    background: none;
    color: #000;
  }
}

/* === ACCESSIBILITY IMPROVEMENTS === */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .typewriter-text {
    animation: none;
    border-right: none;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
  }
}

/* === HIGH CONTRAST MODE === */
@media (prefers-contrast: high) {
  .btn-outline {
    border-width: 2px;
  }

  .component-showcase,
  .feature-card,
  .stat-card {
    border-width: 2px;
  }
}

/* === FOCUS INDICATORS === */
.btn:focus-visible,
.nav-link:focus-visible,
.social-link:focus-visible,
.footer-link:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* === 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; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }

.fade-in {
  animation: fadeInUp 0.6s ease-out;
}