/* SSETCO - Modern Responsive Styles with Theme Support */

:root {
  color-scheme: dark;

  /* Modern color palette - Dark theme */
  --color-text: #e4e4e7;
  --color-text-muted: rgba(228, 228, 231, 0.65);
  --color-accent: #06b6d4;
  --color-accent-strong: #0891b2;
  --color-accent-soft: #22d3ee;
  --color-accent-overlay: rgba(6, 182, 212, 0.15);
  --color-accent-glow: rgba(6, 182, 212, 0.4);

  /* Solid backgrounds - matching Next.js site */
  --color-body-bg: #0a0a0a;
  --color-nav-bg: #18181b;
  --color-nav-shadow: rgba(0, 0, 0, 0.3);
  --color-dropdown-bg: #18181b;
  --color-dropdown-shadow: rgba(0, 0, 0, 0.5);
  --color-card-bg: #18181b;
  --color-card-shadow: rgba(0, 0, 0, 0.4);
  --color-card-border: rgba(255, 255, 255, 0.08);
  --color-section-alt-bg: #111111;
  
  /* Interactive elements */
  --color-link: #22d3ee;
  --color-link-hover: #67e8f9;
  --color-button-bg: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
  --color-button-bg-hover: linear-gradient(135deg, #0891b2 0%, #0e7490 100%);
  --color-button-text: #ffffff;
  --color-button-focus-outline: rgba(6, 182, 212, 0.5);
  
  /* Form elements */
  --color-input-bg: rgba(0, 0, 0, 0.3);
  --color-input-border: rgba(255, 255, 255, 0.15);
  --color-input-border-focus: #06b6d4;
  --color-input-shadow-focus: rgba(6, 182, 212, 0.25);
  --color-code-bg: rgba(6, 182, 212, 0.15);
  
  /* Mobile specific */
  --color-mobile-nav-bg: rgba(9, 9, 11, 0.95);
  --color-mobile-dropdown-bg: rgba(255, 255, 255, 0.05);
  --color-mobile-dropdown-border: #06b6d4;
  
  /* Theme toggle */
  --color-theme-toggle-bg: rgba(255, 255, 255, 0.05);
  --color-theme-toggle-border: rgba(255, 255, 255, 0.12);
  --color-theme-toggle-hover: rgba(6, 182, 212, 0.2);
  --color-theme-menu-bg: rgba(9, 9, 11, 0.95);
  --color-theme-menu-shadow: rgba(0, 0, 0, 0.5);
  --color-theme-chip-bg: rgba(6, 182, 212, 0.2);
  
  /* Modern spacing system */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Border radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
}

:root[data-theme="light"] {
  color-scheme: light;
  --color-text: #18181b;
  --color-text-muted: rgba(24, 24, 27, 0.65);
  --color-accent: #0891b2;
  --color-accent-strong: #0e7490;
  --color-accent-soft: #06b6d4;
  --color-accent-overlay: rgba(8, 145, 178, 0.12);
  --color-accent-glow: rgba(8, 145, 178, 0.3);
  --color-body-bg: #ffffff;
  --color-nav-bg: #ffffff;
  --color-nav-shadow: rgba(0, 0, 0, 0.1);
  --color-dropdown-bg: #ffffff;
  --color-dropdown-shadow: rgba(0, 0, 0, 0.15);
  --color-card-bg: #ffffff;
  --color-card-shadow: rgba(0, 0, 0, 0.1);
  --color-card-border: rgba(0, 0, 0, 0.08);
  --color-section-alt-bg: #f8fafc;
  --color-link: #0891b2;
  --color-link-hover: #0e7490;
  --color-button-bg: linear-gradient(135deg, #0891b2 0%, #0e7490 100%);
  --color-button-bg-hover: linear-gradient(135deg, #0e7490 0%, #155e75 100%);
  --color-button-text: #ffffff;
  --color-button-focus-outline: rgba(8, 145, 178, 0.4);
  --color-input-bg: #ffffff;
  --color-input-border: rgba(0, 0, 0, 0.12);
  --color-input-border-focus: #0891b2;
  --color-input-shadow-focus: rgba(8, 145, 178, 0.2);
  --color-code-bg: rgba(8, 145, 178, 0.1);
  --color-mobile-nav-bg: #ffffff;
  --color-mobile-dropdown-bg: rgba(8, 145, 178, 0.08);
  --color-mobile-dropdown-border: rgba(8, 145, 178, 0.3);
  --color-theme-toggle-bg: rgba(0, 0, 0, 0.04);
  --color-theme-toggle-border: rgba(0, 0, 0, 0.1);
  --color-theme-toggle-hover: rgba(8, 145, 178, 0.12);
  --color-theme-menu-bg: #ffffff;
  --color-theme-menu-shadow: rgba(0, 0, 0, 0.15);
  --color-theme-chip-bg: rgba(8, 145, 178, 0.12);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    color-scheme: light;
    --color-text: #18181b;
    --color-text-muted: rgba(24, 24, 27, 0.65);
    --color-accent: #0891b2;
    --color-accent-strong: #0e7490;
    --color-accent-soft: #06b6d4;
    --color-accent-overlay: rgba(8, 145, 178, 0.12);
    --color-accent-glow: rgba(8, 145, 178, 0.3);
    --color-body-bg: #ffffff;
    --color-nav-bg: #ffffff;
    --color-nav-shadow: rgba(0, 0, 0, 0.1);
    --color-dropdown-bg: #ffffff;
    --color-dropdown-shadow: rgba(0, 0, 0, 0.15);
    --color-card-bg: #ffffff;
    --color-card-shadow: rgba(0, 0, 0, 0.1);
    --color-card-border: rgba(0, 0, 0, 0.08);
    --color-section-alt-bg: #f8fafc;
    --color-link: #0891b2;
    --color-link-hover: #0e7490;
    --color-button-bg: linear-gradient(135deg, #0891b2 0%, #0e7490 100%);
    --color-button-bg-hover: linear-gradient(135deg, #0e7490 0%, #155e75 100%);
    --color-button-text: #ffffff;
    --color-button-focus-outline: rgba(8, 145, 178, 0.4);
    --color-input-bg: #ffffff;
    --color-input-border: rgba(0, 0, 0, 0.12);
    --color-input-border-focus: #0891b2;
    --color-input-shadow-focus: rgba(8, 145, 178, 0.2);
    --color-code-bg: rgba(8, 145, 178, 0.1);
    --color-mobile-nav-bg: #ffffff;
    --color-mobile-dropdown-bg: rgba(8, 145, 178, 0.08);
    --color-mobile-dropdown-border: rgba(8, 145, 178, 0.3);
    --color-theme-toggle-bg: rgba(0, 0, 0, 0.04);
    --color-theme-toggle-border: rgba(0, 0, 0, 0.1);
    --color-theme-toggle-hover: rgba(8, 145, 178, 0.12);
    --color-theme-menu-bg: #ffffff;
    --color-theme-menu-shadow: rgba(0, 0, 0, 0.15);
    --color-theme-chip-bg: rgba(8, 145, 178, 0.12);
  }
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  margin: 0;
  min-height: 100vh;
  background: var(--color-body-bg);
  color: var(--color-text);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(1.5rem, 5vw, 2.5rem);
  padding: clamp(1rem, 3vw, 1.5rem) clamp(1rem, 4vw, 2rem) clamp(3rem, 6vw, 4rem);
  line-height: 1.7;
  font-size: 16px;
  transition: color 0.3s ease, background-color 0.3s ease;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Navigation */
.site-nav {
  width: 100%;
  max-width: 1100px;
  margin-top: clamp(0.5rem, 3vw, 1rem);
  padding: clamp(0.75rem, 2vw, 1rem) clamp(1.25rem, 4vw, 2rem);
  border-radius: var(--radius-lg);
  background: var(--color-nav-bg);
  border: 1px solid var(--color-card-border);
  box-shadow: 0 4px 16px var(--color-nav-shadow);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(1rem, 3vw, 2rem);
  position: sticky;
  top: var(--space-md);
  z-index: 1000;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: visible;
}

.site-nav .brand {
  font-size: clamp(1.125rem, 3vw, 1.25rem);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 800;
  color: var(--color-accent);
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  transition: transform 0.3s ease;
}

.site-nav .brand::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.site-nav .brand:hover::after {
  transform: scaleX(1);
}

.mobile-menu-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--color-text);
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--space-sm);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
  min-height: 44px;
  min-width: 44px;
}

.mobile-menu-toggle:hover,
.mobile-menu-toggle:focus-visible {
  background: var(--color-accent-overlay);
  transform: scale(1.05);
}

.site-nav nav {
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 2vw, 0.75rem);
  flex-wrap: wrap;
  position: relative;
  overflow: visible;
}

.site-nav .nav-link,
.site-nav .group-toggle {
  color: var(--color-text);
  font-weight: 600;
  padding: clamp(0.5rem, 1.5vw, 0.625rem) clamp(0.75rem, 2vw, 1rem);
  border-radius: var(--radius-full);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(4px);
  text-decoration: none;
  font-size: clamp(0.875rem, 2vw, 0.9375rem);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  letter-spacing: 0.01em;
}

.site-nav .nav-link {
  border: none;
  background: transparent;
}

.site-nav .nav-link::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--color-accent-overlay);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.site-nav .nav-link[aria-current="page"],
.site-nav .group-toggle.is-active {
  background: var(--color-accent-overlay);
  color: var(--color-accent-soft);
}

.site-nav .nav-link:hover::before,
.site-nav .nav-link:focus-visible::before {
  opacity: 1;
}

.site-nav .nav-link:hover,
.site-nav .nav-link:focus-visible {
  color: var(--color-accent-soft);
  transform: translateY(-2px);
}

.site-nav .nav-group {
  position: relative;
}

.site-nav .nav-group::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 0.5rem;
  background: transparent;
}

.site-nav .group-toggle {
  gap: 0.375rem;
  background: transparent;
  border: none;
  cursor: pointer;
  font: inherit;
}

.site-nav .group-toggle::after {
  content: "▾";
  font-size: 0.75rem;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.site-nav .group-toggle:hover,
.site-nav .group-toggle:focus-visible {
  background: var(--color-accent-overlay);
  color: var(--color-accent-soft);
}

.site-nav .group-toggle:hover::after,
.site-nav .group-toggle:focus-visible::after,
.site-nav .group-toggle[aria-expanded="true"]::after {
  transform: rotate(180deg);
}

.site-nav .dropdown {
  display: none;
  flex-direction: column;
  gap: 0.25rem;
  position: absolute;
  top: calc(100% + 0.25rem);
  left: 0;
  padding: var(--space-sm);
  background: var(--color-dropdown-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  box-shadow: 0 20px 40px var(--color-dropdown-shadow);
  min-width: 200px;
  z-index: 1001;
  opacity: 0;
  transform: translateY(-10px);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

.site-nav .dropdown a {
  color: var(--color-text);
  text-decoration: none;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  white-space: nowrap;
  min-height: 44px;
  display: flex;
  align-items: center;
  font-size: 0.9375rem;
  font-weight: 500;
  position: relative;
}

.site-nav .dropdown a.coming-soon {
  cursor: default;
  pointer-events: none;
  color: var(--color-text-muted);
  background: transparent;
}

.site-nav .dropdown a.coming-soon::before {
  display: none;
}

.site-nav .dropdown a.coming-soon:hover,
.site-nav .dropdown a.coming-soon:focus-visible {
  background: transparent;
  color: var(--color-text-muted);
  padding-left: var(--space-md);
}

.site-nav .dropdown a::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%) scaleX(0);
  width: 3px;
  height: 60%;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  transition: transform 0.2s ease;
}

.site-nav .dropdown a[aria-current="page"],
.site-nav .dropdown a:hover,
.site-nav .dropdown a:focus-visible {
  background: var(--color-accent-overlay);
  color: var(--color-accent-soft);
  padding-left: calc(var(--space-md) + 0.5rem);
}

.site-nav .dropdown a:hover::before,
.site-nav .dropdown a:focus-visible::before {
  transform: translateY(-50%) scaleX(1);
}

.site-nav .nav-group:hover .dropdown,
.site-nav .nav-group:focus-within .dropdown {
  display: flex;
  opacity: 1;
  transform: translateY(0);
  animation: dropdownSlide 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: auto;
}

@keyframes dropdownSlide {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Theme switcher */
.theme-switcher {
  position: relative;
  display: flex;
  align-items: center;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  border: 1px solid var(--color-theme-toggle-border);
  background: var(--color-theme-toggle-bg);
  color: var(--color-text);
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
  min-height: 44px;
  min-width: 44px;
  transition: background 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  background: var(--color-theme-toggle-hover);
  border-color: var(--color-accent-soft);
  transform: translateY(-1px);
}

.theme-toggle__icon {
  font-size: 1rem;
  line-height: 1;
}

.theme-toggle-menu {
  display: none;
  flex-direction: column;
  gap: 0.25rem;
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 0.5rem;
  padding: 0.65rem;
  background: var(--color-theme-menu-bg);
  border-radius: 12px;
  box-shadow: 0 12px 30px var(--color-theme-menu-shadow);
  min-width: 180px;
  z-index: 120;
}

.theme-switcher.is-open .theme-toggle-menu {
  display: flex;
  animation: fadeIn 0.2s ease;
}

.theme-toggle-menu button {
  border: none;
  background: transparent;
  color: var(--color-text);
  padding: 0.55rem 0.75rem;
  border-radius: 8px;
  text-align: center;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  transition: background 0.2s ease, transform 0.2s ease;
}

.theme-toggle-menu button[aria-checked="true"] {
  background: var(--color-theme-chip-bg);
}

.theme-toggle-menu button:hover,
.theme-toggle-menu button:focus-visible {
  background: var(--color-accent-overlay);
  transform: translateX(2px);
}

/* Main content */
main {
  width: 100%;
  max-width: 1100px;
  background: var(--color-card-bg);
  padding: 0;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-card-border);
  box-shadow: 0 10px 30px var(--color-card-shadow);
  text-align: left;
  overflow: visible;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  z-index: 1;
}

/* Hero Section */
.hero-section {
  text-align: center;
  padding: clamp(3rem, 8vw, 5rem) clamp(2rem, 6vw, 4rem) clamp(2rem, 6vw, 3rem);
  background: linear-gradient(135deg, var(--color-accent-overlay), transparent);
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
  opacity: 0.1;
  animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.1;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.15;
  }
}

.hero-badge {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-accent-overlay);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-full);
  font-size: clamp(0.75rem, 2vw, 0.875rem);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-accent-soft);
  margin-bottom: var(--space-lg);
  position: relative;
  z-index: 1;
}

.hero-title {
  margin: 0 0 var(--space-lg) 0;
  font-size: clamp(2.5rem, 8vw, 4rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-accent-soft), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  letter-spacing: -0.02em;
  position: relative;
  z-index: 1;
}

.hero-subtitle {
  font-size: clamp(1.125rem, 3vw, 1.375rem);
  color: var(--color-text-muted);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.6;
  font-weight: 400;
  position: relative;
  z-index: 1;
}

/* Content Grid */
.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(1.5rem, 4vw, 2rem);
  padding: clamp(2rem, 5vw, 3rem);
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  overflow: hidden;
}

.feature-card {
  padding: clamp(1.75rem, 4vw, 2.5rem);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-soft));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.feature-card:hover::before,
.feature-card:focus-within::before {
  transform: scaleX(1);
}

.feature-card:hover,
.feature-card:focus-within {
  transform: translateY(-8px);
  border-color: var(--color-accent);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.feature-card-highlight {
  border: 1px solid var(--color-card-border);
  background: rgba(255, 255, 255, 0.03);
}

.feature-card-highlight::before {
  transform: scaleX(0);
}

.feature-card-highlight:hover,
.feature-card-highlight:focus-within {
  border-color: var(--color-accent);
}

.card-icon {
  font-size: clamp(2.5rem, 6vw, 3rem);
  margin-bottom: var(--space-lg);
  display: block;
  filter: grayscale(0.2);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover .card-icon {
  transform: scale(1.1) rotate(5deg);
}

.feature-card h2 {
  font-size: clamp(1.375rem, 4vw, 1.75rem);
  color: var(--color-accent-soft);
  margin: 0 0 var(--space-md) 0;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.feature-card p {
  font-size: clamp(0.9375rem, 2.5vw, 1.0625rem);
  line-height: 1.7;
  margin: 0;
  color: var(--color-text);
}

.feature-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-sm);
}

.feature-card ul li {
  position: relative;
  padding-left: calc(var(--space-md) + 0.5rem);
  font-size: clamp(0.9rem, 2.3vw, 1.05rem);
  color: var(--color-text);
  line-height: 1.6;
}

.feature-card ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  top: 0.25rem;
  color: var(--color-accent);
  font-weight: 700;
}

/* Legacy section support */
section {
  display: grid;
  gap: clamp(1.25rem, 3vw, 1.5rem);
  padding: clamp(2rem, 5vw, 3rem);
}

section p {
  font-size: clamp(0.9375rem, 2.5vw, 1.0625rem);
  line-height: 1.7;
  margin: 0;
  color: var(--color-text);
}

section p strong {
  color: var(--color-accent-soft);
  font-weight: 700;
}

section h1,
main h1 {
  margin-top: 0;
  font-size: clamp(2rem, 5vw, 2.75rem);
  color: var(--color-accent-soft);
  text-align: center;
  line-height: 1.2;
  margin-bottom: clamp(1.25rem, 4vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

section h2,
main h2 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  color: var(--color-accent-soft);
  margin-top: clamp(2rem, 4vw, 2.5rem);
  margin-bottom: clamp(0.875rem, 2vw, 1.25rem);
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -0.01em;
}

section h3,
main h3 {
  font-size: clamp(1.25rem, 3vw, 1.625rem);
  color: var(--color-accent);
  margin-top: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: clamp(0.75rem, 2vw, 1rem);
  line-height: 1.3;
  font-weight: 600;
}

section ul {
  padding-left: clamp(1.25rem, 3vw, 1.5rem);
  font-size: clamp(0.9375rem, 2.5vw, 1.0625rem);
  line-height: 1.7;
  list-style-type: none;
}

section ul li {
  margin-bottom: var(--space-md);
  position: relative;
  padding-left: var(--space-lg);
}

section ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.table-wrapper {
  overflow-x: auto;
  margin: clamp(1rem, 3vw, 1.5rem) 0;
  border-radius: 12px;
  border: 1px solid var(--color-card-border);
  background: rgba(0, 0, 0, 0.02);
}

.table-wrapper table {
  width: 100%;
  border-collapse: collapse;
  min-width: 420px;
}

.table-wrapper th,
.table-wrapper td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-card-border);
  text-align: left;
  vertical-align: top;
}

.table-wrapper th {
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.95rem;
}

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

.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;
}

code {
  background: var(--color-code-bg);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  font-family: 'SF Mono', 'Fira Code', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
  font-size: 0.875em;
  color: var(--color-accent-soft);
  border: 1px solid var(--color-card-border);
}

footer {
  margin-top: var(--space-3xl);
  padding-top: var(--space-xl);
  font-size: 0.875rem;
  text-align: center;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-card-border);
}

/* Better text rendering */
body {
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  text-rendering: optimizeLegibility;
}

/* Progressive enhancement for modern browsers */
/* Using solid backgrounds now - no backdrop-filter needed */

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* Form Elements */
form {
  display: grid;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

input,
textarea,
select {
  padding: var(--space-md);
  border: 2px solid var(--color-input-border);
  border-radius: var(--radius-md);
  background: var(--color-input-bg);
  color: var(--color-text);
  font-size: 1rem;
  font-family: inherit;
  min-height: 44px;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-input-border-focus);
  box-shadow: 0 0 0 4px var(--color-input-shadow-focus);
  background: rgba(255, 255, 255, 0.05);
}

button {
  padding: var(--space-md) var(--space-xl);
  background: var(--color-button-bg);
  color: var(--color-button-text);
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  min-height: 44px;
  font-size: 1rem;
  letter-spacing: 0.01em;
  position: relative;
  overflow: hidden;
}

button::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

button:hover::before {
  width: 300px;
  height: 300px;
}

button:hover {
  background: var(--color-button-bg-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

button:active {
  transform: translateY(0);
}

button:focus-visible {
  outline: 3px solid var(--color-button-focus-outline);
  outline-offset: 2px;
}

/* Links */
a {
  color: var(--color-link);
  text-decoration: none;
  position: relative;
  transition: color 0.2s ease;
  font-weight: 500;
}

a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s ease;
}

a:hover::after,
a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

a:hover,
a:focus-visible {
  color: var(--color-link-hover);
}

/* Mobile-specific styles */
@media (max-width: 768px) {
  body {
    background-attachment: scroll;
    padding: var(--space-md) var(--space-md) var(--space-2xl);
    gap: var(--space-lg);
  }

  .mobile-menu-toggle {
    display: block;
  }

  .site-nav {
    flex-wrap: wrap;
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-lg);
  }

  .site-nav nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-mobile-nav-bg);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-top: var(--space-md);
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-sm);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--color-card-border);
  }

  .site-nav nav.mobile-nav-open {
    display: flex;
    animation: slideDown 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  @keyframes slideDown {
    from {
      opacity: 0;
      transform: translateY(-20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .site-nav .nav-link,
  .site-nav .group-toggle {
    width: 100%;
    text-align: left;
    justify-content: flex-start;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
  }

  .site-nav .nav-group {
    width: 100%;
  }

  .site-nav .dropdown {
    position: static;
    display: none;
    background: var(--color-mobile-dropdown-bg);
    margin: var(--space-sm) 0 0 var(--space-lg);
    border-left: 3px solid var(--color-mobile-dropdown-border);
    box-shadow: none;
    padding: var(--space-sm);
  }

  .site-nav .nav-group:hover .dropdown,
  .site-nav .nav-group:focus-within .dropdown,
  .site-nav .nav-group .group-toggle[aria-expanded="true"] + .dropdown {
    display: block;
  }

  .theme-switcher {
    width: 100%;
  }

  .theme-toggle {
    width: 100%;
    justify-content: space-between;
  }

  .theme-toggle-menu {
    position: static;
    margin-top: var(--space-sm);
    width: 100%;
    padding: var(--space-sm);
    display: none;
  }

  .theme-switcher.is-open .theme-toggle-menu {
    display: flex;
  }

  main {
    margin-top: var(--space-lg);
  }

  .hero-section {
    padding: var(--space-2xl) var(--space-lg) var(--space-xl);
  }

  .content-grid {
    grid-template-columns: 1fr;
    padding: var(--space-xl) var(--space-lg);
  }
  
  section {
    padding: var(--space-xl) var(--space-lg);
  }

  section p {
    text-align: left;
  }
}

/* Enhanced Touch Feedback for Mobile */
@media (hover: none) and (pointer: coarse) {
  /* Touch device optimizations */
  .site-nav .nav-link,
  .site-nav .group-toggle,
  .theme-toggle {
    -webkit-tap-highlight-color: var(--color-accent-overlay);
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
  }

  /* Enhanced touch feedback with scale animation */
  .site-nav .nav-link:active,
  .site-nav .group-toggle:active,
  .theme-toggle:active,
  .mobile-menu-toggle:active {
    transform: scale(0.95);
    transition: transform 0.1s ease;
  }

  /* Larger touch targets on very small screens */
  @media (max-width: 360px) {
    .site-nav .nav-link,
    .site-nav .group-toggle,
    .theme-toggle {
      min-height: 48px;
      padding: 0.75rem 1rem;
    }
  }

  /* Better focus indicators for touch devices */
  .site-nav .nav-link:focus,
  .site-nav .group-toggle:focus,
  .theme-toggle:focus {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
  }
}

/* Tablet styles */
@media (min-width: 769px) and (max-width: 1023px) {
  .site-nav {
    padding: 0.75rem 1.25rem;
  }

  .site-nav .nav-link,
  .site-nav .group-toggle {
    padding: 0.45rem 0.75rem;
  }

  /* Slightly larger touch targets for tablets */
  .site-nav .nav-link,
  .site-nav .group-toggle,
  .theme-toggle {
    min-height: 46px;
  }
}

/* Desktop enhancements */
@media (min-width: 1024px) {
  body {
    gap: var(--space-3xl);
  }

  .site-nav {
    position: sticky;
  }

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

  /* Enhanced focus indicators for keyboard navigation */
  .site-nav .nav-link:focus-visible,
  .site-nav .group-toggle:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 3px;
  }
}

/* Skip links for accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--color-accent);
  color: var(--color-button-text);
  padding: 8px;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  z-index: 1000;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 6px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .site-nav {
    background: var(--color-nav-bg);
    border: 2px solid var(--color-accent);
  }
  
  main {
    background: var(--color-card-bg);
    border: 2px solid var(--color-card-border);
  }
  
  .site-nav .nav-link:hover,
  .site-nav .nav-link:focus-visible {
    background: var(--color-accent);
    color: var(--color-button-text);
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .site-nav:hover,
  main:hover {
    transform: none;
  }
}

/* Print styles */
@media print {
  body {
    background: white !important;
    color: black !important;
    font-size: 12pt;
    line-height: 1.4;
  }
  
  .site-nav {
    display: none;
  }
  
  .skip-link {
    display: none;
  }
  
  main {
    background: white !important;
    box-shadow: none !important;
    border: 1px solid #ccc !important;
    max-width: none;
    width: 100%;
    margin: 0;
    padding: 1rem;
  }
  
  main h1 {
    color: black !important;
    text-shadow: none !important;
  }
  
  a {
    color: black !important;
    text-decoration: underline !important;
  }
}

/* Loading states */
.loading {
  opacity: 0.7;
  pointer-events: none;
}

.lazy {
  opacity: 0;
  transition: opacity 0.3s ease;
}

.lazy.loaded {
  opacity: 1;
}

/* 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-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }

/* Performance optimization hints */
.site-nav {
  contain: layout style;
}

main,
.feature-card {
  contain: layout style paint;
}

/* Force hardware acceleration for smooth animations */
.site-nav,
main,
.mobile-menu-toggle,
.theme-toggle,
.feature-card {
  transform: translateZ(0);
  will-change: transform;
}

/* Better text rendering */
body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}