:root {
  --bg: #0a0b0f;
  --bg-subtle: #0f1117;
  --panel: #141824;
  --panel-elevated: #1a1f2e;
  --text: #f0f2f5;
  --text-secondary: #e1e4e8;
  --muted: #9ca3af;
  --muted-dark: #6b7280;
  --brand: #60d4ff;
  --brand-strong: #3db8f0;
  --brand-soft: #88e5ff;
  --brand-dim: rgba(96, 212, 255, 0.1);
  --border: #252938;
  --border-light: #2d3142;
  --border-subtle: #1e2230;
  --focus: #60d4ff44;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.25);
  --shadow-brand: 0 4px 20px rgba(96, 212, 255, 0.15);
  --gradient-brand: linear-gradient(135deg, var(--brand), var(--brand-strong));
  --gradient-bg: linear-gradient(135deg, var(--bg) 0%, var(--bg-subtle) 100%);
  --gradient-panel: linear-gradient(135deg, var(--panel) 0%, var(--panel-elevated) 100%);
  
  /* iOS safe area support */
  --safe-area-top: env(safe-area-inset-top);
  --safe-area-right: env(safe-area-inset-right);
  --safe-area-bottom: env(safe-area-inset-bottom);
  --safe-area-left: env(safe-area-inset-left);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--gradient-bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Inter", "SF Pro Display", "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  line-height: 1.6;
  letter-spacing: -0.01em;
  font-feature-settings: "kern" 1, "liga" 1, "calt" 1;
  
  /* iOS-specific improvements */
  -webkit-text-size-adjust: 100%;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
  overscroll-behavior: none;
  
  /* Enable smooth scrolling */
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  
  /* Subtle animated background pattern */
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(96, 212, 255, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(96, 212, 255, 0.02) 0%, transparent 50%),
    radial-gradient(circle at 40% 80%, rgba(96, 212, 255, 0.015) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
  animation: float 20s ease-in-out infinite;
}

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

/* Allow text selection for content areas */
.static-text, .card p, blockquote {
  -webkit-user-select: text;
  user-select: text;
}

code { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; }

a {
  color: var(--brand-soft);
  text-decoration: none;
  transition: all 0.2s ease;
  position: relative;
}

a:hover {
  color: var(--brand);
}

a:not(.nav-link):not(.chip) {
  text-decoration: underline;
  text-decoration-color: rgba(96, 212, 255, 0.3);
  text-underline-offset: 3px;
}

a:not(.nav-link):not(.chip):hover {
  text-decoration-color: var(--brand);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 max(20px, var(--safe-area-left)) 0 max(20px, var(--safe-area-right));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 11, 15, 0.95);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-subtle);
  padding-top: var(--safe-area-top);
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  
  /* Subtle gradient overlay */
  background-image: linear-gradient(180deg, rgba(96, 212, 255, 0.02) 0%, transparent 100%);
}

.site-header.scrolled {
  box-shadow: var(--shadow-lg);
  border-bottom-color: var(--brand);
  border-bottom-width: 2px;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

.brand { 
  font-weight: 700; 
  letter-spacing: 0.2px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand .accent { color: var(--brand); }

.brand .logo { 
  height: 50px; 
  width: auto; 
  display: block; 
  object-fit: contain;
  transition: transform 0.3s ease;
}

.brand .logo:hover {
  transform: scale(1.05) rotate(2deg);
}

.brand-text {
  font-size: 18px;
  font-weight: 700;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}

/* Navigation */
.main-nav {
  display: flex;
  gap: 8px;
  align-items: center;
  flex: 1;
  justify-content: center;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  white-space: nowrap;
}

.nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 80%;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: 2px;
  transition: transform 0.3s ease;
}

.nav-link:hover {
  color: var(--brand-soft);
  background: rgba(96, 212, 255, 0.08);
}

.nav-link:hover::before {
  transform: translateX(-50%) scaleX(1);
}

.nav-link.active {
  color: var(--brand);
  background: rgba(96, 212, 255, 0.12);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  padding: 8px;
  cursor: pointer;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.nav-toggle:hover {
  background: rgba(96, 212, 255, 0.1);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

.lang-switch { display: flex; gap: 6px; }
.chip {
  background: var(--panel);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: 24px;
  cursor: pointer;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  font-weight: 500;
  font-size: 14px;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.chip::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-brand);
  opacity: 0;
  transition: opacity 0.2s ease;
  z-index: -1;
}

.chip.active {
  background: var(--gradient-brand);
  color: #0a1017;
  border-color: var(--brand);
  box-shadow: var(--shadow-brand);
  font-weight: 600;
}

.chip.active::before {
  opacity: 1;
}

/* Scroll to top button */
.scroll-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 90;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gradient-brand);
  border: none;
  color: #0a1017;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-brand);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.8);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.scroll-to-top:hover {
  transform: translateY(-4px) scale(1.1);
  box-shadow: 0 8px 32px rgba(96, 212, 255, 0.4);
}

.scroll-to-top:active {
  transform: translateY(-2px) scale(1.05);
}

.hero { 
  padding: 96px 0 64px; 
  text-align: left;
  position: relative;
  min-height: 60vh;
  display: flex;
  align-items: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 0%, rgba(96, 212, 255, 0.03) 0%, transparent 50%);
  pointer-events: none;
}

.hero h1 { 
  margin: 0 0 16px; 
  font-size: 40px; 
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}

.hero .sub { 
  margin: 0; 
  color: var(--text-secondary); 
  font-size: 18px;
  line-height: 1.6;
  max-width: 600px;
}

.story { 
  padding: 64px 0 32px;
  position: relative;
}

.story::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 50%, rgba(96, 212, 255, 0.015) 0%, transparent 60%);
  pointer-events: none;
}

.story-grid { display: grid; grid-template-columns: 1fr; gap: 24px; }

.about { 
  padding: 64px 0 48px;
  position: relative;
}

.about::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brand), transparent);
  opacity: 0.3;
}

.about h2, .story h2 {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 32px;
  text-align: center;
}
.model-grid { display: grid; grid-template-columns: 1fr; gap: 16px; align-items: center; }
.model-text { 
  background: var(--gradient-panel); 
  border: 1px solid var(--border); 
  border-radius: 16px; 
  padding: 24px; 
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(10px);
}

.model-image { }

.technology { padding: 24px 0 32px; }

.fig-card { 
  background: var(--gradient-panel); 
  border: 1px solid var(--border); 
  border-radius: 16px; 
  padding: 16px; 
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(10px);
}

.fig-card img { 
  display: block; 
  max-width: 100%; 
  height: auto; 
  border-radius: 12px; 
  box-shadow: var(--shadow-sm);
}

.card {
  background: var(--gradient-panel);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-brand);
  opacity: 0.4;
}

.card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 0%, rgba(96, 212, 255, 0.05), transparent 60%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.card:hover::after {
  opacity: 1;
}

.card h3 { 
  margin-top: 0; 
  margin-bottom: 16px;
  color: var(--brand-soft);
  font-weight: 700;
  font-size: 22px;
}

.card p {
  color: var(--text-secondary);
  line-height: 1.7;
}

.input-section { padding: 24px 0; }
/* Phonikud comparison styles */
.phonikud-comparison { 
  padding: 32px 0 48px; 
  position: relative;
}

.phonikud-comparison::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 50%, rgba(96, 212, 255, 0.02) 0%, transparent 70%);
  pointer-events: none;
}

.comparison-intro {
  background: var(--gradient-panel);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 24px;
  margin-bottom: 32px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(10px);
  position: relative;
}

.comparison-intro::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: 20px 20px 0 0;
  opacity: 0.6;
}

.speed-info {
  text-align: center;
}

.speed-highlight {
  color: var(--brand-soft);
  font-weight: 700;
  background: var(--brand-dim);
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid rgba(96, 212, 255, 0.2);
  display: inline-block;
  box-shadow: 0 2px 8px rgba(96, 212, 255, 0.1);
}

.speed-tag {
  background: var(--gradient-brand);
  color: #0a1017;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 12px;
  margin-left: 8px;
  box-shadow: 0 2px 4px rgba(96, 212, 255, 0.2);
  border: 1px solid rgba(96, 212, 255, 0.3);
}

/* Phonikud table styles */
.phonikud-table {
  display: grid;
  gap: 12px;
  margin-bottom: 32px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.phonikud-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr 1fr;
  gap: 1px;
  background: var(--border);
}

.phonikud-header {
  color: var(--text-secondary);
  background: var(--panel-elevated);
}

.phonikud-header .phonikud-cell {
  background: var(--panel-elevated);
  font-weight: 600;
  color: var(--brand-soft);
}

.phonikud-cell {
  background: var(--gradient-panel);
  border: none;
  padding: 16px;
  min-height: 80px;
  overflow-y: auto;
  word-wrap: break-word;
  word-break: break-word;
  backdrop-filter: blur(10px);
  position: relative;
  transition: all 0.2s ease;
}

.phonikud-cell.text-cell {
  padding: 20px;
  background: linear-gradient(135deg, var(--panel) 0%, var(--panel-elevated) 100%);
}

.example-text {
  margin: 0;
}

.hebrew-text {
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 12px 0;
  color: var(--brand-soft);
  line-height: 1.5;
  letter-spacing: 0.01em;
  text-shadow: 0 1px 2px rgba(96, 212, 255, 0.1);
}

.example-text .translation {
  color: var(--muted);
  font-style: italic;
  font-size: 14px;
  margin: 6px 0;
  line-height: 1.5;
  opacity: 0.9;
}

.phonikud-cell audio {
  width: 100%;
  height: 44px;
  border-radius: 12px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: all 0.2s ease;
  
  /* Safari-specific audio styling */
  -webkit-appearance: none;
  appearance: none;
}

.phonikud-cell audio:hover {
  border-color: var(--brand);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1), 0 0 0 2px rgba(96, 212, 255, 0.1);
}

.phonikud-cell audio:focus {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

.vc-cell audio:focus {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

.audio-fallback {
  font-size: 12px;
  color: var(--muted-dark);
  text-align: center;
  font-style: italic;
  margin: 8px 0;
  opacity: 0.8;
}

.model-label {
  text-align: center;
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-soft);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 4px 8px;
  background: rgba(96, 212, 255, 0.1);
  border-radius: 12px;
  border: 1px solid rgba(96, 212, 255, 0.2);
}

.empty-cell {
  text-align: center;
  padding: 16px 8px;
  color: var(--muted-dark);
  font-style: italic;
  font-size: 13px;
  opacity: 0.6;
}

.comparison-note {
  background: linear-gradient(135deg, rgba(109, 211, 255, 0.1), rgba(63, 181, 238, 0.05));
  border: 1px solid rgba(109, 211, 255, 0.2);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
}

.comparison-note p {
  margin: 0;
  line-height: 1.6;
}

.voice-conversion { 
  padding: 32px 0 48px; 
  position: relative;
}

.voice-conversion::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 50%, rgba(96, 212, 255, 0.01) 0%, transparent 70%);
  pointer-events: none;
}

.speed-note {
  background: var(--gradient-panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  margin-bottom: 24px;
  text-align: center;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(10px);
  position: relative;
}

.speed-note::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: 16px 16px 0 0;
  opacity: 0.4;
}

.speed-note p {
  margin: 0;
  color: var(--text-secondary);
  font-weight: 500;
}

/* User guide styles */
.user-guide {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin-top: 24px;
}

.user-guide h3 {
  margin: 0 0 16px 0;
  color: var(--brand);
  text-align: center;
  font-size: 18px;
}

.guide-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.guide-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px;
  background: rgba(109, 211, 255, 0.05);
  border-radius: 8px;
  border-left: 3px solid var(--brand);
}

.guide-icon {
  font-size: 18px;
  flex-shrink: 0;
  margin-top: 2px;
}

.guide-item p {
  margin: 0;
  line-height: 1.4;
  font-size: 14px;
}
.vc-table { 
  display: grid; 
  gap: 12px; 
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.vc-header { 
  color: var(--text-secondary); 
  background: var(--panel-elevated);
}

.vc-header .vc-cell {
  background: var(--panel-elevated);
  font-weight: 600;
  color: var(--brand-soft);
}

.vc-row { 
  display: grid; 
  grid-template-columns: 1fr 1fr 1fr; 
  gap: 1px;
  background: var(--border);
}

.vc-cell { 
  background: var(--gradient-panel); 
  border: none;
  border-radius: 0;
  padding: 16px; 
  min-height: 80px;
  overflow-y: auto;
  word-wrap: break-word;
  word-break: break-word;
  backdrop-filter: blur(10px);
  transition: all 0.2s ease;
}

.vc-cell audio { 
  width: 100%; 
  height: 44px;
  border-radius: 12px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: all 0.2s ease;
  
  /* Safari-specific audio styling */
  -webkit-appearance: none;
  appearance: none;
}

.vc-cell audio:hover {
  border-color: var(--brand);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1), 0 0 0 2px rgba(96, 212, 255, 0.1);
}
.static-text { 
  max-height: 160px; 
  overflow-y: auto; 
  line-height: 1.5; 
  font-size: 15px;
  padding: 8px 0;
  color: var(--text-secondary);
  scrollbar-width: thin;
  scrollbar-color: var(--border-light) transparent;
}

.static-text::-webkit-scrollbar {
  width: 8px;
}

.static-text::-webkit-scrollbar-track {
  background: transparent;
  border-radius: 4px;
}

.static-text::-webkit-scrollbar-thumb {
  background: var(--border-light);
  border-radius: 4px;
  border: 2px solid transparent;
  background-clip: content-box;
}

.static-text::-webkit-scrollbar-thumb:hover {
  background: var(--brand);
  background-clip: content-box;
}
.vc-cell textarea { width: 100%; height: 80px; }
.controls {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 10px 16px;
  align-items: center;
}
.input-row { margin-top: 12px; }
textarea {
  width: 100%;
  background: #0e111a;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  font-size: 15px;
  resize: vertical;
}

.actions { display: flex; gap: 10px; margin-top: 12px; }
button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  font-size: 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #141826;
  color: var(--text);
  cursor: pointer;
  
  /* Enhanced touch support */
  min-height: 44px;
  min-width: 44px;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  
  /* iOS button improvements */
  -webkit-appearance: none;
  appearance: none;
}
button.primary { background: linear-gradient(180deg, var(--brand), var(--brand-strong)); color: #03101a; border-color: transparent; }
button.ghost { background: transparent; }
button:focus-visible { outline: 4px solid var(--focus); outline-offset: 2px; }
select:disabled, input:disabled { opacity: 0.5; cursor: not-allowed; }

.notice { background: #151a24; border: 1px solid var(--border); border-radius: 10px; padding: 12px; }
.hidden { display: none; }
.muted { color: var(--muted); }
.small { font-size: 13px; }

.demo-video { 
  padding: 32px 0 48px; 
  position: relative;
}

.demo-video::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 50%, rgba(96, 212, 255, 0.02) 0%, transparent 70%);
  pointer-events: none;
}

.video-wrap { 
  position: relative; 
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(10px);
}

.video { 
  width: 100%; 
  max-height: 70vh; 
  border: none;
  background: var(--gradient-panel);
  touch-action: manipulation;
  display: block;
  
  /* iOS video improvements */
  -webkit-playsinline: true;
  object-fit: contain;
  
  /* Poster image styling */
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}

.video::-webkit-media-controls-overlay-play-button {
  background-color: var(--brand);
  border-radius: 50%;
  opacity: 0.9;
}

.video::cue {
  background-color: rgba(0, 0, 0, 0.8);
  color: white;
}

.fs-btn { 
  position: absolute; 
  right: 16px; 
  bottom: 16px; 
  z-index: 10; 
  padding: 12px; 
  border-radius: 12px; 
  background: rgba(20, 24, 38, 0.9); 
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-light); 
  color: var(--text);
  min-height: 48px;
  min-width: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-md);
}

.fs-btn:hover {
  background: rgba(96, 212, 255, 0.1);
  border-color: var(--brand);
  transform: scale(1.05);
  box-shadow: var(--shadow-brand);
}

.site-footer { 
  border-top: 1px solid var(--border-subtle); 
  padding: 40px 0; 
  background: var(--gradient-panel);
  backdrop-filter: blur(10px);
  margin-top: 48px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-info p { 
  margin: 0; 
  color: var(--muted); 
  font-size: 14px;
  opacity: 0.8;
}

.footer-links {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

.footer-credit {
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
}

.social-links {
  display: flex;
  gap: 16px;
  align-items: center;
}

.social-links a {
  color: var(--muted);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 8px;
  border-radius: 8px;
  background: rgba(96, 212, 255, 0.05);
  border: 1px solid rgba(96, 212, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
}

.social-links a:hover {
  color: var(--brand);
  background: rgba(96, 212, 255, 0.1);
  border-color: var(--brand);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(96, 212, 255, 0.2);
}

.social-links svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* Mobile-first responsive design */

/* Small phones */
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 32px; line-height: 1.2; }
  .hero { padding: 48px 0 32px; text-align: center; min-height: auto; }
  .hero .sub { font-size: 16px; line-height: 1.6; max-width: 100%; }
  
  .brand .logo { height: 40px; }
  .brand-text { font-size: 16px; }
  .site-header .container { height: 64px; flex-wrap: wrap; }
  
  /* Mobile navigation */
  .nav-toggle {
    display: flex;
  }
  
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(10, 11, 15, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 12px;
    box-shadow: var(--shadow-lg);
    border-bottom: 2px solid var(--brand);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  }
  
  .main-nav.active {
    max-height: 500px;
    opacity: 1;
  }
  
  .nav-link {
    width: 100%;
    text-align: center;
    padding: 12px 24px;
    font-size: 16px;
  }
  
  .lang-switch {
    position: absolute;
    top: 12px;
    right: 60px;
  }
  
  .scroll-to-top {
    bottom: 20px;
    right: 20px;
    width: 48px;
    height: 48px;
  }
  .lang-switch { gap: 6px; }
  
  .vc-row { 
    grid-template-columns: 1fr; 
    gap: 8px;
  }
  .vc-cell { 
    padding: 8px; 
    min-height: 80px;
  }
  .vc-cell audio { width: 100%; height: 44px; min-height: 44px; }
  .static-text { 
    font-size: 13px; 
    line-height: 1.3; 
    max-height: 120px;
  }
  
  .model-grid { gap: 12px; }
  .model-text { padding: 12px; }
  .fig-card { padding: 8px; }
  
  .card { padding: 12px; }
  
  blockquote { 
    font-size: 14px; 
    padding: 8px 12px; 
    margin: 12px 0;
    line-height: 1.5;
  }
  
  .video { max-height: 50vh; }
  .fs-btn { right: 8px; bottom: 8px; padding: 8px; }
  
  .demo-video { padding: 8px 0 24px; }
  
  /* Phonikud comparison mobile styles */
  .phonikud-comparison { padding: 16px 0 24px; }
  .comparison-intro { padding: 12px; margin-bottom: 16px; }
  .phonikud-table { gap: 6px; margin-bottom: 16px; }
  
  .phonikud-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  
  .phonikud-row .phonikud-cell:first-child {
    order: 1;
  }
  
  .phonikud-cell {
    padding: 8px;
    min-height: 50px;
  }
  
  .phonikud-cell.text-cell {
    padding: 12px;
  }
  
  .hebrew-text {
    font-size: 15px;
    margin: 0 0 6px 0;
  }
  
  .example-text .translation {
    font-size: 13px;
    margin: 2px 0;
  }
  
  .phonikud-cell audio {
    height: 44px;
    min-height: 44px;
  }
  
  .speed-tag {
    font-size: 11px;
    padding: 1px 4px;
    margin-left: 4px;
  }
  
  /* Footer mobile styles */
  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: 16px;
  }
  
  .footer-links {
    align-items: center;
  }
  
  .social-links {
    gap: 12px;
  }
  
  .social-links a {
    padding: 6px;
  }
  
  /* Stack sections more tightly on mobile */
  .story, .about, .technology { padding: 16px 0 8px; }
}

/* Tablets */
@media (min-width: 481px) and (max-width: 768px) {
  .hero h1 { font-size: 44px; }
  .hero { padding: 64px 0 48px; min-height: 50vh; }
  
  /* Tablet navigation */
  .nav-toggle {
    display: flex;
  }
  
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(10, 11, 15, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 32px;
    gap: 16px;
    box-shadow: var(--shadow-lg);
    border-bottom: 2px solid var(--brand);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  }
  
  .main-nav.active {
    max-height: 500px;
    opacity: 1;
  }
  
  .nav-link {
    width: 100%;
    text-align: center;
    padding: 14px 28px;
    font-size: 16px;
  }
  
  .scroll-to-top {
    bottom: 24px;
    right: 24px;
  }
  
  .vc-row { 
    grid-template-columns: 1fr; 
    gap: 10px;
  }
  .vc-row .vc-cell:first-child { 
    grid-column: 1 / -1; 
  }
  .vc-row .vc-cell:not(:first-child) { 
    display: grid; 
    grid-template-columns: 1fr 1fr; 
    gap: 10px; 
  }
  
  .model-grid { grid-template-columns: 1fr; gap: 16px; }
  
  /* Phonikud comparison tablet styles */
  .phonikud-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  
  .phonikud-cell.text-cell {
    grid-column: 1;
    margin-bottom: 8px;
  }
  
  .phonikud-cell:not(.text-cell) {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
    align-items: center;
    padding: 8px;
  }
}

/* Desktop */
@media (min-width: 769px) {
  .hero { padding-top: 64px; }
  .hero h1 { font-size: 56px; }
  .story-grid { grid-template-columns: 1fr 1fr; }
  .model-grid { grid-template-columns: 1fr 1fr; }
  .vc-row { grid-template-columns: 2fr 1fr 1fr; }
  
  /* Phonikud comparison desktop styles */
  .model-comparison { 
    grid-template-columns: 1fr 1fr 1fr;
    gap: 16px;
  }
  
  /* User guide desktop styles */
  .guide-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
}

/* Large screens */
@media (min-width: 1200px) {
  .hero h1 { font-size: 64px; }
  .container { max-width: 1200px; }
}

/* iOS-specific fixes */
@supports (-webkit-touch-callout: none) {
  /* iPhone/iPad specific styles */
  .site-header {
    /* Sticky header for iOS with safe area */
    position: -webkit-sticky;
    position: sticky;
    top: 0;
    z-index: 10;
  }
  
  .vc-cell audio {
    /* Better audio controls on iOS */
    height: 44px;
    border: 1px solid var(--border);
  }
  
  .video {
    /* Prevent zoom on video double-tap */
    touch-action: none;
  }
  
  /* Improve scrolling momentum on iOS */
  .static-text, .card {
    -webkit-overflow-scrolling: touch;
  }
}

/* PWA-specific styles */
@media all and (display-mode: standalone) {
  .site-header {
    padding-top: max(var(--safe-area-top), 20px);
  }
  
  body {
    padding-bottom: var(--safe-area-bottom);
  }
}

/* Enhanced animations and interactions */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.8;
  }
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

/* Interactive elements */
.hero {
  animation: fadeInUp 0.8s ease-out;
}

.phonikud-cell {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.phonikud-cell:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-brand);
  background: linear-gradient(135deg, var(--panel-elevated) 0%, rgba(96, 212, 255, 0.05) 100%);
}

.model-sample {
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.model-sample:hover {
  transform: translateY(-1px);
  border-color: var(--brand);
  box-shadow: 0 4px 15px rgba(109, 211, 255, 0.1);
}

.model-sample:hover::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(109, 211, 255, 0.1), transparent);
  animation: shimmer 1.5s ease-in-out;
}

.speed-highlight {
  animation: pulse 2s infinite;
}

.chip {
  transition: all 0.2s ease;
}

.chip:hover:not(.active) {
  background: var(--panel-elevated);
  border-color: var(--brand);
  transform: translateY(-1px);
  box-shadow: var(--shadow-brand);
}

.card {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.vc-cell {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.vc-cell:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-brand);
  background: linear-gradient(135deg, var(--panel-elevated) 0%, rgba(96, 212, 255, 0.03) 100%);
}

audio {
  transition: all 0.2s ease;
}

audio:hover {
  transform: scale(1.02);
}

/* Progressive disclosure for better UX */
.comparison-note {
  animation: fadeInUp 0.6s ease-out 0.3s both;
}

.phonikud-row:nth-child(2) { animation: fadeInUp 0.6s ease-out 0.1s both; }
.phonikud-row:nth-child(3) { animation: fadeInUp 0.6s ease-out 0.2s both; }
.phonikud-row:nth-child(4) { animation: fadeInUp 0.6s ease-out 0.3s both; }

/* Better visual hierarchy */
.section-header {
  text-align: center;
  margin-bottom: 32px;
  position: relative;
}

.section-header h2 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0;
  line-height: 1.2;
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--gradient-brand);
  border-radius: 2px;
  opacity: 0.6;
}

.section-intro {
  text-align: center;
  margin-bottom: 32px;
  padding: 20px;
  background: linear-gradient(135deg, rgba(109, 211, 255, 0.05), rgba(63, 181, 238, 0.02));
  border-radius: 12px;
  border: 1px solid rgba(109, 211, 255, 0.1);
}

.section-intro h2 {
  background: linear-gradient(135deg, var(--brand), var(--brand-strong));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

/* Language visibility */
body[data-lang="en"] .lang-he { display: none !important; }
body[data-lang="he"] .lang-en { display: none !important; }

/* 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;
    scroll-behavior: auto !important;
  }
  
  .speed-highlight {
    animation: none;
  }
}

/* Mobile animation optimizations */
@media (max-width: 768px) {
  .phonikud-cell:hover {
    transform: none;
    box-shadow: none;
  }
  
  .model-sample:hover {
    transform: none;
  }
  
  .card:hover {
    transform: none;
  }
  
  audio:hover {
    transform: none;
  }
  
  /* Keep only essential animations on mobile */
  .hero {
    animation-duration: 0.5s;
  }
  
  .phonikud-row:nth-child(2),
  .phonikud-row:nth-child(3),
  .phonikud-row:nth-child(4) {
    animation-duration: 0.4s;
    animation-delay: 0s;
  }
}

/* RTL adjustments */
html[dir="rtl"] body { direction: rtl; }
html[dir="rtl"] .hero { text-align: right; }
html[dir="rtl"] .controls { grid-template-columns: 1fr 120px; }
html[dir="rtl"] .lang-switch { flex-direction: row-reverse; }