/* ============================================
   Technova - Modern Dark Theme
   Clean, accessible, performant
   ============================================ */

/* CSS Variables */
:root {
  /* Colors */
  --primary: #8B5CF6;
  --primary-light: #A78BFA;
  --primary-dark: #7C3AED;
  --secondary: #06B6D4;
  --secondary-light: #22D3EE;
  
  /* Backgrounds */
  --bg-base: #0A0E1A;
  --bg-surface: #111827;
  --bg-elevated: #1F2937;
  --bg-hover: #374151;
  
  /* Text */
  --text-primary: #F9FAFB;
  --text-secondary: #9CA3AF;
  --text-muted: #6B7280;
  
  /* Borders */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-default: rgba(255, 255, 255, 0.1);
  --border-focus: rgba(139, 92, 246, 0.5);
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(139, 92, 246, 0.15);
  
  /* Layout */
  --max-width: 1280px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;
}

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

/* Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================
   Header
   ============================================ */
.site-header {
  background: linear-gradient(180deg, rgba(17, 24, 39, 0.95) 0%, rgba(17, 24, 39, 0.85) 100%);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  gap: 24px;
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Logo */
.logo-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.logo-svg {
  width: 42px;
  height: 42px;
  filter: drop-shadow(0 0 12px rgba(139, 92, 246, 0.4)) drop-shadow(0 0 24px rgba(6, 182, 212, 0.2));
  transition: filter var(--transition-normal);
}

.logo-wrap:hover .logo-svg {
  filter: drop-shadow(0 0 16px rgba(139, 92, 246, 0.6)) drop-shadow(0 0 32px rgba(6, 182, 212, 0.3));
}

.logo-svg .orbit {
  transform-origin: 24px 24px;
  animation: orbit-spin 20s linear infinite;
}

@keyframes orbit-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
  .logo-svg .orbit { animation: none; }
}

.logo {
  font-family: 'Poppins', 'Inter', sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0;
  position: relative;
}

.brand-accent {
  background: linear-gradient(135deg, #A78BFA 0%, var(--primary) 40%, var(--secondary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 40px rgba(139, 92, 246, 0.3);
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
}

.tagline {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 1px;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

/* Navigation */
.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-elevated);
}

.nav-link.active {
  color: var(--primary-light);
  background: rgba(139, 92, 246, 0.1);
}

/* Mobile Navigation Toggle */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--text-secondary);
}

.hamburger {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  position: relative;
  border-radius: 2px;
  transition: background var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--transition-fast);
}

.hamburger::before { top: -6px; }
.hamburger::after { top: 6px; }

.nav-open .hamburger { background: transparent; }
.nav-open .hamburger::before { transform: rotate(45deg) translate(4px, 4px); }
.nav-open .hamburger::after { transform: rotate(-45deg) translate(4px, -4px); }

/* ============================================
   Controls & Filters
   ============================================ */
.controls {
  padding: 24px 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Category Tabs */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
}

.tab {
  padding: 10px 18px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.tab:hover:not(:disabled) {
  color: var(--text-primary);
  background: var(--bg-elevated);
  border-color: var(--border-default);
}

.tab.active {
  color: #fff;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-color: transparent;
  box-shadow: var(--shadow-glow);
}

.tab:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* Tab Count Badge */
.tab-count {
  font-size: 0.75rem;
  font-weight: 500;
  opacity: 0.7;
  margin-left: 4px;
}

/* Search Wrapper */
.search-wrap {
  position: relative;
  width: 100%;
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

#search {
  width: 100%;
  padding: 14px 16px 14px 48px;
  font-size: 1rem;
  color: var(--text-primary);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

#search:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

/* Item Count */
.item-count {
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 8px 0;
}

/* A-Z Quick Jump Bar */
.az-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 12px 0;
}

.az-letter {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.az-letter:hover:not(:disabled) {
  color: var(--text-primary);
  background: var(--bg-elevated);
  border-color: var(--border-default);
}

.az-letter.has-items {
  color: var(--text-secondary);
  border-color: var(--border-default);
}

.az-letter:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
  z-index: 100;
}

.back-to-top:hover {
  transform: translateY(-2px);
}

.back-to-top[hidden] {
  display: none;
}

/* ============================================
   Item List & Cards
   ============================================ */
.list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  padding-bottom: 40px;
}

.list h2 {
  grid-column: 1 / -1;
  font-family: 'Poppins', 'Inter', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 24px 0 8px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.list h2:first-child {
  margin-top: 0;
}

/* Category Header with Inline Description */
.category-header {
  grid-column: 1 / -1;
  margin: 24px 0 8px;
}

.category-header:first-child {
  margin-top: 0;
}

.category-header .category-heading {
  margin: 0 0 8px;
  padding-bottom: 0;
  border-bottom: none;
}

.category-desc-inline {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0;
  padding: 12px 16px;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.08) 0%, rgba(59, 130, 246, 0.08) 100%);
  border-left: 3px solid var(--primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* Status Legend */
.status-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  padding: 12px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.legend-label {
  color: var(--text-secondary);
}

.legend-count {
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-elevated);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  min-width: 28px;
  text-align: center;
}

/* Cards */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: border-color var(--transition-fast);
}

.card:hover {
  border-color: var(--border-default);
}

.card.highlight {
  animation: highlightCard 1.5s ease;
}

@keyframes highlightCard {
  0%, 100% { border-color: var(--border-subtle); }
  50% { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2); }
}

.card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 8px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.card h3 a {
  color: var(--primary-light);
  text-decoration: none;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 0;
  border-bottom: 1px dashed transparent;
}

.card h3 a:hover {
  color: var(--secondary-light);
  border-bottom-color: var(--secondary-light);
}

/* External Link Icon */
.link-icon {
  font-size: 0.75rem;
  opacity: 0.6;
  transition: all var(--transition-fast);
}

.card h3 a:hover .link-icon {
  opacity: 1;
  transform: translate(2px, -2px);
}

/* Status Indicator Dot */
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.status-dot.active {
  background: #10B981;
  box-shadow: 0 0 6px #10B981;
  animation: blink-green 2s ease-in-out infinite;
}

.status-dot.inactive {
  background: #EF4444;
  box-shadow: 0 0 6px #EF4444;
  animation: blink-red 2s ease-in-out infinite;
}

@keyframes blink-green {
  0%, 100% { opacity: 1; box-shadow: 0 0 6px #10B981; }
  50% { opacity: 0.4; box-shadow: 0 0 2px #10B981; }
}

@keyframes blink-red {
  0%, 100% { opacity: 1; box-shadow: 0 0 6px #EF4444; }
  50% { opacity: 0.4; box-shadow: 0 0 2px #EF4444; }
}

/* Verified Icon (legacy, kept for compatibility) */
.verified-icon {
  font-size: 0.75rem;
  color: #10B981;
  background: rgba(16, 185, 129, 0.15);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-weight: 500;
}

/* Description */
.card .description {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
}

/* Inactive Link Styling */
.inactive-link {
  cursor: not-allowed;
  color: var(--text-muted);
}

.inactive-link:hover {
  color: var(--text-muted);
}

/* Inactive Notice */
.inactive-notice {
  font-size: 0.75rem;
  color: #EF4444;
  background: rgba(239, 68, 68, 0.1);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  margin-top: 10px;
  border-left: 3px solid #EF4444;
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  z-index: 1000;
  max-width: 90vw;
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.toast-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.toast-message {
  font-size: 0.9rem;
  color: var(--text-primary);
  line-height: 1.5;
}

.toast-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0;
  margin-left: 8px;
  flex-shrink: 0;
  line-height: 1;
}

.toast-close:hover {
  color: var(--text-primary);
}

/* Popular Cards */
.card.popular {
  background: linear-gradient(135deg, var(--bg-surface) 0%, rgba(139, 92, 246, 0.05) 100%);
}

/* Section Headings */
.section-heading {
  grid-column: 1 / -1;
  font-size: 1rem;
  font-weight: 600;
  margin: 24px 0 12px;
  padding: 12px 16px;
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-heading:first-of-type {
  margin-top: 0;
}

.popular-heading {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.15) 0%, rgba(6, 182, 212, 0.1) 100%);
  color: var(--primary-light);
  border: 1px solid rgba(139, 92, 246, 0.2);
}

.popular-heading .star-icon {
  color: #FCD34D;
  font-size: 1.1em;
}

.more-heading {
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

/* ============================================
   Content Pages (About, Contribute)
   ============================================ */
.content {
  max-width: 720px;
  margin: 40px auto;
  padding: 32px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
}

.content h2 {
  font-family: 'Poppins', 'Inter', sans-serif;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.content h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 24px 0 12px;
}

.content p {
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.content ul {
  color: var(--text-secondary);
  margin: 0 0 16px 24px;
}

.content li {
  margin-bottom: 8px;
}

/* ============================================
   Forms
   ============================================ */
form label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin: 16px 0 6px;
}

form input,
form textarea,
form select {
  width: 100%;
  padding: 12px 14px;
  font-size: 0.9375rem;
  color: var(--text-primary);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

form input:focus,
form textarea:focus,
form select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

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

.form-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow), var(--shadow-md);
}

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

.btn-secondary:hover {
  color: var(--text-primary);
  background: var(--bg-elevated);
  border-color: var(--border-default);
  box-shadow: none;
  transform: none;
}

/* Submit helpers */
.submit-helpers {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
}

.submit-helpers p {
  margin-bottom: 8px;
}

.submit-helpers a {
  color: var(--primary-light);
  text-decoration: none;
  font-weight: 500;
}

.submit-helpers a:hover {
  text-decoration: underline;
}

/* ============================================
   Community Page
   ============================================ */
.community-coming {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: #fff;
  padding: 24px;
  border-radius: var(--radius-lg);
  margin: 20px 0;
}

.community-coming h3 {
  color: #fff;
  margin: 0 0 8px;
}

.community-coming p {
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
}

body.community-closed #newDiscussion,
body.community-closed #discussionsList,
body.community-closed #adminToggle,
body.community-closed #adminPanel,
body.community-closed #exportData,
body.community-closed #importData {
  display: none !important;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  text-align: center;
  padding: 24px;
  color: var(--text-muted);
  font-size: 0.8125rem;
  border-top: 1px solid var(--border-subtle);
  margin-top: 40px;
}

/* ============================================
   Utilities
   ============================================ */
.muted {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.pill {
  display: inline-flex;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary-light);
  background: rgba(139, 92, 246, 0.1);
  border-radius: var(--radius-full);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 960px) {
  .header-row {
    padding: 12px 16px;
  }
  
  .list {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .site-nav {
    position: fixed;
    top: 68px;
    right: 16px;
    flex-direction: column;
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    padding: 12px;
    min-width: 200px;
    box-shadow: var(--shadow-lg);
    transform: translateX(calc(100% + 32px));
    opacity: 0;
    transition: all var(--transition-normal);
    z-index: 99;
  }
  
  .site-nav.open {
    transform: translateX(0);
    opacity: 1;
  }
  
  .nav-link {
    padding: 12px 16px;
  }
  
  .tabs {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding: 12px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    margin: 0 -24px;
    padding-left: 24px;
    padding-right: 24px;
    border-radius: 0;
    border-left: none;
    border-right: none;
  }
  
  .tabs::-webkit-scrollbar {
    display: none;
  }
  
  .tab.active {
    color: #fff;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-color: transparent;
    box-shadow: 0 0 12px rgba(139, 92, 246, 0.4);
  }
  
  .az-bar {
    margin: 0 -16px;
    padding: 8px 16px;
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  
  .az-bar::-webkit-scrollbar {
    display: none;
  }
  
  .az-letter {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    font-size: 0.75rem;
  }
  
  .back-to-top {
    bottom: 16px;
    right: 16px;
    width: 44px;
    height: 44px;
  }
  
  .list {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .list h2 {
    font-size: 1.25rem;
    margin: 16px 0 8px;
  }
  
  .section-heading {
    margin: 16px 0 10px;
    padding: 10px 14px;
    font-size: 0.9375rem;
  }
  
  .content {
    margin: 24px auto;
    padding: 24px;
  }
  
  .form-actions {
    flex-direction: column;
  }
  
  .btn,
  .btn-secondary {
    width: 100%;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }
  
  .container {
    padding: 0 16px;
  }
  
  .logo {
    font-size: 1.25rem;
  }
  
  .tagline {
    display: none;
  }
  
  .header-row {
    padding: 10px 12px;
  }
  
  .controls {
    padding: 16px 0;
    gap: 12px;
  }
  
  .tabs {
    padding: 8px 16px;
    gap: 6px;
    margin: 0 -16px;
  }
  
  .tab {
    padding: 8px 14px;
    font-size: 0.8125rem;
  }
  
  .tab.active {
    color: #fff;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-color: transparent;
    box-shadow: 0 0 12px rgba(139, 92, 246, 0.4);
  }
  
  #search {
    padding: 12px 12px 12px 44px;
    font-size: 16px; /* Prevents iOS auto-zoom on focus */
  }
  
  .search-icon {
    left: 14px;
    width: 18px;
    height: 18px;
  }
  
  .item-count {
    font-size: 0.8125rem;
  }
  
  .az-letter {
    width: 26px;
    height: 26px;
    font-size: 0.6875rem;
  }
  
  .card {
    padding: 16px;
    border-radius: var(--radius-md);
  }
  
  .card h3 {
    font-size: 1rem;
  }
  
  .card .description {
    font-size: 0.8125rem;
    line-height: 1.45;
  }
  
  .section-heading {
    padding: 8px 12px;
    font-size: 0.875rem;
    border-radius: var(--radius-sm);
  }
  
  .content {
    padding: 20px;
    border-radius: var(--radius-md);
    margin: 16px auto;
  }
  
  .footer {
    padding: 20px 0;
    font-size: 0.8125rem;
  }
}

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

/* Safe area insets for modern phones */
@supports (padding: env(safe-area-inset-bottom)) {
  .footer {
    padding-bottom: calc(24px + env(safe-area-inset-bottom));
  }
  
  .site-header {
    padding-top: env(safe-area-inset-top);
  }
  
  @media (max-width: 768px) {
    .container {
      padding-left: max(16px, env(safe-area-inset-left));
      padding-right: max(16px, env(safe-area-inset-right));
    }
  }
}

/* Touch optimizations */
@media (pointer: coarse) {
  .tab, 
  .btn-reset,
  select,
  .nav-link,
  .btn,
  .btn-secondary {
    min-height: 44px;
  }
  
  /* Disable hover states on touch - prevents "stuck" hover */
  .tab:hover:not(:disabled) {
    color: var(--text-secondary);
    background: transparent;
    border-color: var(--border-default);
  }
  
  /* Active state provides immediate tap feedback */
  .tab:active:not(:disabled) {
    color: var(--text-primary);
    background: var(--bg-elevated);
    transform: scale(0.96);
  }
  
  /* Keep active tab styling on hover/active */
  .tab.active:hover,
  .tab.active:active {
    color: #fff;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-color: transparent;
    transform: none;
  }
  
  .card {
    cursor: default;
  }
  
  .card:hover {
    transform: none;
  }
  
  .card:active {
    transform: scale(0.98);
  }
}