/* ==========================================================================
   RESONATE LABS - UI Components
   Hero, Sections, Transport, Feature Cards, FAQ, Pricing
   ========================================================================== */

/* ===== Plasma Background Canvas ===== */
#plasma-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
}

/* ===== Audio Unlock Overlay ===== */
.audio-unlock-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.audio-unlock-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.audio-unlock-content {
  text-align: center;
  padding: 3rem;
  background: rgba(139, 92, 246, 0.1);
  border: 2px solid rgba(139, 92, 246, 0.3);
  border-radius: 20px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  cursor: pointer;
  transition: all 0.3s ease;
}

.audio-unlock-content:hover {
  background: rgba(139, 92, 246, 0.2);
  border-color: rgba(139, 92, 246, 0.5);
  transform: scale(1.05);
}

.audio-unlock-content p {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary, #fff);
  margin: 0;
}

/* ===== Navigation Bar ===== */
.nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-overlay, 100);
  padding: var(--space-md, 1rem) var(--space-lg, 1.5rem);
  background: rgba(7, 11, 18, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary, #fff);
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-secondary, rgba(255, 255, 255, 0.7));
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--text-primary, #fff);
}

.nav-cta .btn-secondary {
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  background: rgba(139, 92, 246, 0.2);
  border: 1px solid rgba(139, 92, 246, 0.4);
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s ease;
}

.nav-cta .btn-secondary:hover {
  background: rgba(139, 92, 246, 0.3);
}

/* ===== Hero Section (HTML classes) ===== */
.hero-container {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
  padding-top: 80px;
}

.hero-icon {
  margin-bottom: 2rem;
  display: flex;
  justify-content: center;
}

.app-icon-large {
  width: 180px;
  height: 180px;
  border-radius: 40px;
  box-shadow: 0 20px 60px rgba(139, 92, 246, 0.4);
}

.hero-headline {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--text-primary, rgba(255, 255, 255, 0.95));
  margin-bottom: 1.5rem;
}

.gradient-text {
  background: linear-gradient(135deg, #8B5CF6, #3B82F6, #06B6D4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subhead {
  font-size: 1.125rem;
  color: var(--text-secondary, rgba(255, 255, 255, 0.7));
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.btn-primary {
  padding: 0.875rem 2rem;
  border-radius: 12px;
  background: linear-gradient(135deg, #8B5CF6, #7C3AED);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.2s ease;
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(139, 92, 246, 0.5);
}

.hero-ctas .btn-secondary {
  padding: 0.875rem 2rem;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.2s ease;
}

.hero-ctas .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
}

.platform-text {
  font-size: 0.875rem;
  color: var(--text-muted, rgba(255, 255, 255, 0.5));
}

/* ===== Header (original) ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-overlay);
  padding: var(--space-md) 0;
  transition: background var(--transition-base);
}

.header--scrolled {
  background: rgba(7, 11, 18, 0.9);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
  border-bottom: 1px solid var(--glass-stroke);
}

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

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  text-decoration: none;
}

.header__logo-icon {
  width: 32px;
  height: 32px;
}

.header__badge {
  margin-left: auto;
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-3xl) var(--space-md);
  overflow: hidden;
}

.hero__background {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero__content {
  text-align: center;
  max-width: 800px;
  z-index: 1;
}

.hero__tagline {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--neon-alpha);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  margin-bottom: var(--space-md);
}

.hero__title {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: var(--font-black);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-lg);
}

.hero__subtitle {
  font-size: var(--text-xl);
  color: var(--text-secondary);
  margin-bottom: var(--space-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: var(--leading-relaxed);
}

.hero__ctas {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-2xl);
}

.hero__badges {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

.hero__scroll-hint {
  position: absolute;
  bottom: var(--space-2xl);
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-muted);
  font-size: var(--text-xs);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ===== Sections ===== */
.section {
  padding: var(--space-4xl) 0;
}

.section__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-2xl);
}

.section__title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-md);
}

.section__subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
}

/* ===== Brainwave Button/Selector ===== */
.brainwave-btn {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-lg);
  background: var(--glass-light);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  border: 1px solid var(--glass-stroke);
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: center;
}

.brainwave-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--btn-color, var(--neon-alpha));
  opacity: 0.6;
  transition: all var(--transition-base);
}

.brainwave-btn:hover {
  background: var(--glass-medium);
  border-color: var(--btn-color, var(--neon-alpha));
  transform: translateY(-2px);
}

.brainwave-btn:hover::before {
  height: 3px;
  opacity: 1;
}

.brainwave-btn.active {
  background: var(--glass-strong);
  border-color: var(--btn-color, var(--neon-alpha));
  box-shadow: 0 0 20px var(--btn-glow, var(--neon-alpha-glow));
}

.brainwave-btn.active::before {
  height: 3px;
  opacity: 1;
}

.brainwave-btn--delta {
  --btn-color: var(--neon-delta);
  --btn-glow: var(--neon-delta-glow);
}

.brainwave-btn--theta {
  --btn-color: var(--neon-theta);
  --btn-glow: var(--neon-theta-glow);
}

.brainwave-btn--alpha {
  --btn-color: var(--neon-alpha);
  --btn-glow: var(--neon-alpha-glow);
}

.brainwave-btn--beta {
  --btn-color: var(--neon-beta);
  --btn-glow: var(--neon-beta-glow);
}

.brainwave-btn--gamma {
  --btn-color: var(--neon-gamma);
  --btn-glow: var(--neon-gamma-glow);
}

.brainwave-btn__label {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
}

.brainwave-btn__frequency {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--btn-color, var(--neon-alpha));
}

/* ===== Brainwave Grid ===== */
.brainwave-grid {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 640px) {
  .brainwave-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .brainwave-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

/* Center last item on 2-col mobile */
@media (max-width: 639px) {
  .brainwave-grid > :nth-child(5) {
    grid-column: span 2;
    max-width: 50%;
    justify-self: center;
  }
}

/* ===== Demo Player ===== */
.demo-player {
  max-width: 600px;
  margin: 0 auto;
}

.demo-player__visualizer {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  max-width: 400px;
  margin: 0 auto var(--space-2xl);
}

.demo-player__canvas {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-full);
}

.demo-player__controls {
  background: linear-gradient(
    135deg,
    var(--glass-strong) 0%,
    var(--glass-medium) 100%
  );
  backdrop-filter: blur(var(--blur-xl));
  -webkit-backdrop-filter: blur(var(--blur-xl));
  border: 1px solid var(--glass-stroke);
  border-radius: var(--radius-2xl);
  padding: var(--space-2xl);
}

/* ===== Transport Controls ===== */
.transport {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.transport__buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
}

.transport__btn {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--glass-medium);
  border: 1px solid var(--glass-stroke);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.transport__btn:hover {
  background: var(--glass-strong);
  transform: scale(1.05);
}

.transport__btn:focus-visible {
  outline: 2px solid var(--neon-alpha);
  outline-offset: 2px;
}

.transport__btn--primary {
  width: 64px;
  height: 64px;
  background: var(--neon-alpha);
  border: none;
}

.transport__btn--primary:hover {
  background: #2563eb;
  box-shadow: var(--glow-alpha);
}

.transport__btn svg {
  width: 24px;
  height: 24px;
}

.transport__btn--primary svg {
  width: 28px;
  height: 28px;
}

/* Progress Bar */
.transport__progress {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.transport__progress-bar {
  flex: 1;
  height: 4px;
  background: var(--glass-medium);
  border-radius: var(--radius-full);
  cursor: pointer;
  position: relative;
}

.transport__progress-fill {
  height: 100%;
  background: var(--neon-alpha);
  border-radius: var(--radius-full);
  width: 0%;
  transition: width 100ms linear;
}

.transport__progress-bar:hover .transport__progress-fill {
  background: var(--neon-cyan);
}

.transport__time {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
  min-width: 80px;
  text-align: right;
}

/* Volume Controls */
.transport__volume {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.transport__volume-icon {
  color: var(--text-muted);
  width: 20px;
  height: 20px;
}

.volume-slider {
  width: 100px;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--glass-medium);
  border-radius: var(--radius-full);
  cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
}

.volume-slider::-moz-range-thumb {
  width: 12px;
  height: 12px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
  border: none;
}

/* ===== Dropdown Select ===== */
.dropdown-select {
  position: relative;
  display: inline-block;
}

.dropdown-select select {
  appearance: none;
  background: var(--glass-medium);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  border: 1px solid var(--glass-stroke);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-xl) var(--space-sm) var(--space-md);
  color: var(--text-primary);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.dropdown-select select:hover {
  background: var(--glass-strong);
}

.dropdown-select select:focus {
  outline: none;
  border-color: var(--neon-alpha);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.dropdown-select::after {
  content: '▼';
  position: absolute;
  right: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  font-size: var(--text-xs);
  color: var(--text-secondary);
  pointer-events: none;
}

/* ===== Feature Grid ===== */
.feature-grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.feature-card {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-xl);
}

.feature-card__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--glass-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--neon-alpha);
}

.feature-card__content {
  flex: 1;
}

.feature-card__title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-sm);
}

.feature-card__description {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin: 0;
  line-height: var(--leading-relaxed);
}

.feature-card__stat {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--neon-alpha);
  margin-top: var(--space-sm);
}

/* ===== Pricing Cards ===== */
.pricing-grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
  max-width: 1000px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.pricing-card {
  position: relative;
  padding: var(--space-2xl);
  display: flex;
  flex-direction: column;
}

.pricing-card--featured {
  border-color: var(--neon-alpha);
  box-shadow: var(--glow-alpha);
}

.pricing-card__badge {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
}

.pricing-card__name {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-sm);
}

.pricing-card__price {
  font-size: var(--text-4xl);
  font-weight: var(--font-black);
  margin-bottom: var(--space-xs);
}

.pricing-card__period {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.pricing-card__features {
  list-style: none;
  padding: 0;
  margin-bottom: var(--space-xl);
  flex: 1;
}

.pricing-card__features li {
  padding: var(--space-sm) 0;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-secondary);
}

.pricing-card__features li::before {
  content: '✓';
  color: var(--neon-alpha);
  font-weight: var(--font-bold);
}

/* ===== FAQ Section ===== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--glass-stroke);
  padding: var(--space-lg) 0;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-item__question {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.faq-item__answer {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* ===== App Store Badges ===== */
.store-badges {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

.store-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background: var(--glass-medium);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  border: 1px solid var(--glass-stroke);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  text-decoration: none;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.store-badge::before {
  content: 'Coming Soon';
  position: absolute;
  top: 0;
  right: 0;
  background: var(--neon-alpha);
  color: white;
  font-size: 8px;
  font-weight: var(--font-bold);
  padding: 2px 6px;
  border-radius: 0 var(--radius-md) 0 var(--radius-sm);
  text-transform: uppercase;
}

.store-badge:hover {
  background: var(--glass-strong);
  transform: translateY(-2px);
}

.store-badge__icon {
  width: 24px;
  height: 24px;
}

.store-badge__text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.store-badge__label {
  font-size: 9px;
  color: var(--text-muted);
  text-transform: uppercase;
}

.store-badge__store {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
}

/* ===== Footer ===== */
.footer {
  padding: var(--space-3xl) 0;
  border-top: 1px solid var(--glass-stroke);
  text-align: center;
}

.footer__section {
  margin-bottom: var(--space-xl);
}

.footer__links {
  display: flex;
  gap: var(--space-xl);
  justify-content: center;
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.footer__link {
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

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

.footer__copyright {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* ===== Locked Content Overlay ===== */
.locked-content-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(7, 11, 18, 0.95) 100%
  );
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: inherit;
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
}

.locked-content-overlay__content {
  text-align: center;
  padding: var(--space-xl);
}

.locked-content-overlay__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-md);
  color: var(--neon-alpha);
}

.locked-content-overlay__title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-sm);
}

.locked-content-overlay__description {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

/* ==========================================================================
   ACTUAL HTML CLASS STYLES (matching index.html)
   ========================================================================== */

/* ===== Section Containers ===== */
.section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: 1rem;
}

.section-subhead {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
}

/* ===== Demo Section ===== */
.demo-section {
  padding: 5rem 0;
}

.demo-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.glass-card {
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

/* ===== Visualizer ===== */
.visualizer-container {
  width: 100%;
  max-width: 300px;
  aspect-ratio: 1;
  margin: 0 auto 2rem;
  position: relative;
}

#visualizer-canvas {
  width: 100%;
  height: 100%;
  border-radius: 50%;
}

/* ===== Brainwave Selector ===== */
.brainwave-selector {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-bottom: 2rem;
}

.brainwave-selector .brainwave-btn {
  padding: 1rem 1.25rem;
  min-width: 120px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
}

.brainwave-selector .brainwave-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(139, 92, 246, 0.5);
}

.brainwave-selector .brainwave-btn.active {
  background: rgba(139, 92, 246, 0.2);
  border-color: #8B5CF6;
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
}

.brainwave-selector .wave-name {
  display: block;
  font-weight: 600;
  color: #fff;
  font-size: 1rem;
}

.brainwave-selector .wave-range {
  display: block;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.6);
  margin: 0.25rem 0;
}

.brainwave-selector .wave-desc {
  display: block;
  font-size: 0.7rem;
  color: rgba(139, 92, 246, 0.8);
}

/* ===== Audio Controls ===== */
.audio-controls {
  margin-bottom: 2rem;
}

.control-row {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.control-group {
  flex: 1;
  min-width: 200px;
}

.control-group label {
  display: block;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 0.5rem;
}

.control-select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: #fff;
  font-size: 0.9rem;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='white' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
}

.control-select:focus {
  outline: none;
  border-color: #8B5CF6;
}

.control-select option {
  background: #1a1a2e;
  color: #fff;
}


.toggle-text {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

/* ===== Playback Controls ===== */
.playback-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}

.play-pause-btn {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, #8B5CF6, #7C3AED);
  border: none;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
}

.play-pause-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 30px rgba(139, 92, 246, 0.5);
}

.play-pause-btn svg {
  width: 28px;
  height: 28px;
}

.play-icon,
.pause-icon {
  width: 28px;
  height: 28px;
}

.hidden {
  display: none !important;
}

/* ===== Volume Control ===== */
.volume-control {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.volume-icon {
  width: 24px;
  height: 24px;
  color: rgba(255, 255, 255, 0.6);
}

.volume-slider {
  width: 120px;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
  cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  background: #fff;
  border-radius: 50%;
  cursor: pointer;
}

/* ===== Progress Container ===== */
.progress-container {
  margin-top: 2rem;
}

.progress-bar {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 0.75rem;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #8B5CF6, #3B82F6);
  border-radius: 3px;
  width: 0%;
  transition: width 0.3s ease;
}

.progress-time {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
}

.demo-disclaimer {
  margin-top: 2rem;
  text-align: center;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
  padding: 1rem;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

/* ===== Features Section ===== */
.features-section {
  padding: 5rem 0;
}

.features-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.feature-card {
  padding: 2rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
}

.feature-icon {
  width: 56px;
  height: 56px;
  margin-bottom: 1.25rem;
  padding: 12px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(139, 92, 246, 0.2));
  color: var(--neon-alpha);
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-icon svg {
  width: 100%;
  height: 100%;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.75rem;
}

.feature-card p {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
  margin: 0;
}

.feature-item {
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
}

.feature-item h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.75rem;
}

.feature-item p {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
  margin: 0;
}

/* ===== Pricing Section ===== */
.pricing-section {
  padding: 5rem 0;
  overflow: visible;
}

.pricing-cards {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
  max-width: 900px;
  margin: 0 auto;
  overflow: visible;
}

@media (min-width: 768px) {
  .pricing-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

.pricing-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 2rem;
  text-align: center;
  position: relative;
  overflow: visible;
}

.pricing-card.pricing-featured {
  border-color: #8B5CF6;
  box-shadow: 0 0 40px rgba(139, 92, 246, 0.2);
}

.featured-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #8B5CF6, #7C3AED);
  color: #fff;
  padding: 0.375rem 1rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.4);
}

.pricing-header {
  margin-bottom: 2rem;
}

.pricing-tier {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

.pricing-price {
  margin-bottom: 0.75rem;
}

.price-amount {
  font-size: 2.5rem;
  font-weight: 800;
  color: #fff;
}

.pricing-desc {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.5;
}

.pricing-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1rem;
}

.btn-full {
  width: 100%;
  display: block;
  text-align: center;
}

.pricing-note {
  text-align: center;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 2rem;
}

.pricing-features {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem 0;
  text-align: left;
}

.pricing-features li {
  padding: 0.75rem 0;
  color: rgba(255, 255, 255, 0.7);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-features .check {
  color: #10B981;
  font-size: 1.25rem;
}

.pricing-features .cross {
  color: rgba(255, 255, 255, 0.3);
  font-size: 1.25rem;
}

.pricing-cta {
  width: 100%;
  padding: 1rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.pricing-cta.primary {
  background: linear-gradient(135deg, #8B5CF6, #7C3AED);
  border: none;
  color: #fff;
}

.pricing-cta.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
}

.pricing-cta.secondary {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
}

.pricing-cta.secondary:hover {
  background: rgba(255, 255, 255, 0.05);
}

/* ===== Science Section ===== */
.science-section {
  padding: 5rem 0;
}

.science-content {
  max-width: 800px;
  margin: 0 auto;
}

.science-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #fff;
  margin: 2rem 0 1rem;
}

.science-content p {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.science-content ul {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
}

.science-content li {
  padding: 0.5rem 0;
  color: rgba(255, 255, 255, 0.7);
  padding-left: 1.5rem;
  position: relative;
}

.science-content li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: #8B5CF6;
}

/* ===== FAQ Section ===== */
.faq-section {
  padding: 5rem 0;
}

.faq-container,
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1.5rem 0;
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  padding: 0;
}

.faq-question span {
  flex: 1;
}

.faq-icon {
  width: 24px !important;
  height: 24px !important;
  min-width: 24px;
  max-width: 24px;
  flex-shrink: 0;
  transition: transform 0.2s ease;
  color: rgba(255, 255, 255, 0.5);
}

/* Pricing check icons */
.check-icon {
  width: 20px !important;
  height: 20px !important;
  min-width: 20px;
  max-width: 20px;
  flex-shrink: 0;
  color: #10B981;
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.open .faq-answer {
  max-height: 500px;
}

.faq-answer p {
  padding-top: 1rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
  margin: 0;
}

.faq-answer ul {
  list-style: none;
  padding: 0.5rem 0 0 0;
  margin: 0;
}

.faq-answer li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
}

.faq-answer li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: #8B5CF6;
}

/* ===== Footer (HTML-specific styles) ===== */
.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.footer-platforms {
  margin-bottom: 3rem;
  text-align: center;
}

.footer-platforms h3 {
  font-size: 1rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.platform-badges {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

.platform-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  min-width: 100px;
  transition: all 0.2s ease;
}

.platform-badge:hover {
  background: rgba(255, 255, 255, 0.05);
  transform: translateY(-2px);
}

.platform-badge svg {
  width: 32px;
  height: 32px;
  color: rgba(255, 255, 255, 0.8);
}

.platform-badge span {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 500;
  text-align: center;
}

.platform-badge small {
  display: block;
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.5);
  margin-top: -0.25rem;
}

.platform-coming-soon {
  opacity: 0.6;
}

.footer-links {
  display: flex;
  gap: 3rem;
  justify-content: center;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.footer-column h4 {
  font-size: 0.875rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.footer-column li {
  margin-bottom: 0.75rem;
}

.footer-column a {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.footer-column a:hover {
  color: #fff;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.footer-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.footer-logo img {
  width: 48px;
  height: 48px;
  border-radius: 12px;
}

.footer-logo span {
  font-size: 1.125rem;
  font-weight: 600;
  color: #fff;
}

.copyright {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
  margin: 0;
}

/* ===== Enhanced Science Section ===== */

/* Frequency Guide Table */
.frequency-guide {
  margin-bottom: 3rem;
}

.frequency-guide h3 {
  font-size: 1.75rem !important;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1rem;
  text-align: center;
}

.frequency-guide-intro {
  text-align: center;
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.frequency-table-wrapper {
  overflow-x: auto;
  margin-top: 2rem;
}

.frequency-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.frequency-table thead {
  border-bottom: 2px solid rgba(255, 255, 255, 0.2);
}

.frequency-table th {
  padding: 1rem;
  text-align: left;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.frequency-table tbody tr {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: background 0.2s ease;
}

.frequency-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.03);
}

.frequency-table td {
  padding: 1.25rem 1rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.5;
}

.band-name {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  color: #fff;
}

.band-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.band-delta .band-indicator {
  background: var(--neon-delta);
  box-shadow: 0 0 10px var(--neon-delta-glow);
}

.band-theta .band-indicator {
  background: var(--neon-theta);
  box-shadow: 0 0 10px var(--neon-theta-glow);
}

.band-alpha .band-indicator {
  background: var(--neon-alpha);
  box-shadow: 0 0 10px var(--neon-alpha-glow);
}

.band-beta .band-indicator {
  background: var(--neon-beta);
  box-shadow: 0 0 10px var(--neon-beta-glow);
}

.band-gamma .band-indicator {
  background: var(--neon-gamma);
  box-shadow: 0 0 10px var(--neon-gamma-glow);
}

.range-cell {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.9rem;
}

.band-delta .range-cell {
  color: var(--neon-delta);
}

.band-theta .range-cell {
  color: var(--neon-theta);
}

.band-alpha .range-cell {
  color: var(--neon-alpha);
}

.band-beta .range-cell {
  color: var(--neon-beta);
}

.band-gamma .range-cell {
  color: var(--neon-gamma);
}

.carrier-cell {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
}

/* Verification Section */
.verification-section {
  margin-bottom: 3rem;
}

.verification-heading {
  font-size: 1.75rem !important;
  font-weight: 700;
  color: #fff;
  margin-bottom: 2rem !important;
  text-align: center;
}

.verification-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .verification-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.verification-card {
  text-align: center;
  padding: 2rem 1.5rem;
}

.verification-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1.25rem;
  padding: 12px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(139, 92, 246, 0.2));
  color: var(--neon-alpha);
}

.verification-icon svg {
  width: 100%;
  height: 100%;
}

.verification-card h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.75rem;
}

.verification-metric {
  font-size: 1.75rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--neon-alpha);
  margin-bottom: 1rem;
  text-shadow: 0 0 20px var(--neon-alpha-glow);
}

.verification-card p {
  font-size: 0.9rem !important;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.6;
  margin: 0 !important;
}

/* Research Foundation */
.research-foundation {
  padding: 2.5rem !important;
}

.research-foundation h3 {
  font-size: 1.75rem !important;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1rem !important;
  text-align: center;
}

.research-intro {
  text-align: center;
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 2.5rem !important;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.research-citations {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.citation-card {
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  transition: all 0.2s ease;
}

.citation-card:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(139, 92, 246, 0.3);
}

.citation-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.citation-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: rgba(139, 92, 246, 0.2);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--neon-theta);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.citation-year {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.5);
}

.citation-text {
  font-size: 0.95rem !important;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 0.75rem !important;
}

.citation-text strong {
  color: #fff;
  font-weight: 600;
}

.citation-text em {
  font-style: italic;
  color: rgba(255, 255, 255, 0.7);
}

.citation-note {
  display: block;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.5;
  margin-top: 0.5rem;
  padding-left: 1rem;
  border-left: 2px solid rgba(139, 92, 246, 0.3);
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .frequency-table {
    font-size: 0.85rem;
  }

  .frequency-table th,
  .frequency-table td {
    padding: 0.75rem 0.5rem;
  }

  .frequency-guide h3,
  .verification-heading,
  .research-foundation h3 {
    font-size: 1.5rem !important;
  }

  .citation-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}

/* Extra small screens - stack table differently */
@media (max-width: 640px) {
  .frequency-table thead {
    display: none;
  }

  .frequency-table,
  .frequency-table tbody,
  .frequency-table tr,
  .frequency-table td {
    display: block;
    width: 100%;
  }

  .frequency-table tr {
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
  }

  .frequency-table td {
    padding: 0.5rem 0;
    border: none;
  }

  .frequency-table td:before {
    content: attr(data-label);
    display: block;
    font-weight: 600;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
  }

  .band-name {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
  }
}