/**
 * Layout: Sections, Grid, Spacing
 */

/* ── Sections ── */
section {
  padding: var(--section-pad-block) var(--section-pad-inline);
}

.section-inner {
  max-width: var(--section-max-width);
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: clamp(3rem, 6vw, 5rem);
}

.section-label {
  display: inline-block;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.subheadline {
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  max-width: 42ch;
  margin: 0 auto;
}

/* ── Hero Section ── */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 8rem var(--section-pad-inline) 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero-headline {
  margin-bottom: var(--space-8);
}

.hero-headline h1 {
  line-height: 1.02;
  margin: 0;
}

.hero-content > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-hero) var(--ease), transform var(--duration-hero) var(--ease);
}

.hero-content.loaded > *:nth-child(1) {
  transition-delay: 100ms;
}

.hero-content.loaded > *:nth-child(2) {
  transition-delay: 280ms;
}

.hero-content.loaded > *:nth-child(3) {
  transition-delay: 460ms;
}

.hero-content.loaded > * {
  opacity: 1;
  transform: translateY(0);
}

.hero-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

@media (min-width: 640px) {
  .hero-cta {
    flex-direction: row;
    justify-content: center;
  }
}

.hero-note {
  margin-top: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* ── Preview Card ── */
.preview {
  margin-top: clamp(3rem, 6vw, 5rem);
  width: 100%;
  max-width: 800px;
}

.preview-card {
  background: rgba(18, 18, 22, 0.95);
  border-radius: var(--radius-lg);
  padding: 0;
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  opacity: 0;
  transform: translateY(32px);
  transition: opacity var(--duration-hero) var(--ease), transform var(--duration-hero) var(--ease);
}

.preview-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.preview-card img {
  width: 100%;
  height: auto;
  display: block;
}

/* ── Feature Carousel ── */
.feature-carousel {
  max-width: 600px;
  margin: 0 auto;
  opacity: 0;
  transform: translateY(32px);
  transition: opacity var(--duration-hero) var(--ease), transform var(--duration-hero) var(--ease);
}

.feature-carousel.visible {
  opacity: 1;
  transform: translateY(0);
}

.feature-carousel-container {
  position: relative;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: #121216;
  aspect-ratio: 16 / 10;
}

.feature-carousel-slide {
  position: absolute;
  inset: 0;
  visibility: hidden;
  opacity: 0;
  transition: opacity 300ms ease;
}

.feature-carousel-slide.active {
  visibility: visible;
  opacity: 1;
}

.feature-carousel-slide img,
.feature-carousel-slide video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-carousel-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: var(--space-6);
}

.carousel-arrow {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease), background var(--duration-fast) var(--ease);
  color: var(--color-text-secondary);
}

.carousel-arrow:hover {
  background: var(--color-surface-hover);
  transform: scale(1.05);
}

.carousel-arrow:active {
  transform: scale(0.95);
}

.carousel-dots {
  display: flex;
  gap: var(--space-2);
}

.carousel-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--color-border);
  border: none;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease), background var(--duration-fast) var(--ease));
}

.carousel-dot:hover {
  transform: scale(1.2);
}

.carousel-dot.active {
  background: var(--color-accent);
  transform: scale(1.2);
}

.feature-carousel-content {
  text-align: center;
  margin-top: var(--space-6);
  opacity: 0;
  transform: translateY(32px);
  transition: opacity var(--duration-hero) var(--ease), transform var(--duration-hero) var(--ease));
}

.feature-carousel-content.visible {
  opacity: 1;
  transform: translateY(0);
}

.feature-carousel-label {
  display: inline-block;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.feature-carousel-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-weight-semibold);
  line-height: 1.2;
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.feature-carousel-desc {
  font-size: var(--text-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  max-width: 40ch;
  margin: 0 auto;
}

/* ── Models Carousel ── */
.models-carousel {
  max-width: 500px;
  margin: 0 auto;
  opacity: 0;
  transform: translateY(32px);
  transition: opacity var(--duration-hero) var(--ease), transform var(--duration-hero) var(--ease);
}

.models-carousel.visible {
  opacity: 1;
  transform: translateY(0);
}

.models-carousel-container {
  position: relative;
  border-radius: 1rem;
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.models-carousel-slide {
  position: relative;
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease);
  padding: 2rem;
}

.models-carousel-slide.active {
  opacity: 1;
}

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

.model-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
  transition: transform var(--duration-fast) var(--ease);
}

.model-item:hover {
  transform: translateY(-4px);
}

.model-icon {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  border-radius: 0.75rem;
  flex-shrink: 0;
}

.model-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.model-label {
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  font-size: var(--text-sm);
}

.models-carousel-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: var(--space-6);
}

/* ── Video Container ── */
.video-container {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity var(--duration-hero) var(--ease), transform var(--duration-hero) var(--ease));
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--color-bg);
}

.video-container.visible {
  opacity: 1;
  transform: translateY(0);
}

.video-container video {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
}

/* ── Grids ── */
.features-grid {
  display: grid;
  gap: var(--space-4);
}

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

@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.models-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-6);
}

.model-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-hero) var(--ease), transform var(--duration-hero) var(--ease));
}

.model-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.model-icon {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  overflow: hidden;
  transition: transform var(--duration-fast) var(--ease), box-shadow var(--duration-fast) var(--ease));
}

.model-item:hover .model-icon {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.model-icon svg,
.model-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.model-label {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

/* ── FAQ ── */
.faq-list {
  max-width: 42rem;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-hero) var(--ease), transform var(--duration-hero) var(--ease));
}

.faq-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-4) 0;
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  text-align: left;
}

.faq-icon {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--color-text-secondary);
  transition: transform var(--duration-fast) var(--ease));
  flex-shrink: 0;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-normal) var(--ease));
}

.faq-answer-inner {
  padding-bottom: var(--space-5);
  font-size: var(--text-sm);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
}

/* ── Pricing Card ── */
.pricing-card {
  max-width: 28rem;
  margin: 0 auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  text-align: center;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-hero) var(--ease), transform var(--duration-hero) var(--ease));
}

.pricing-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.pricing-price {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 4rem);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.pricing-note {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
}

.pricing-features {
  list-style: none;
  text-align: left;
  margin-bottom: 2rem;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text);
}

.pricing-features li svg {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--color-accent);
  flex-shrink: 0;
}

/* ── CTA Section ── */
.cta-section {
  text-align: center;
}

.cta-buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  margin-top: 2.5rem;
}

@media (min-width: 640px) {
  .cta-buttons {
    flex-direction: row;
    justify-content: center;
  }
}

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--color-border);
  padding: 2.5rem var(--section-pad-inline);
}

.footer-inner {
  max-width: var(--section-max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text);
  text-decoration: none;
  font-weight: var(--font-weight-semibold);
}

.footer-logo img {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  object-fit: contain;
}

.footer-copy {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  order: 2;
}

@media (min-width: 768px) {
  .footer-copy {
    order: 0;
  }
}

.footer-links {
  display: flex;
  gap: var(--space-6);
}

.footer-links a {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease));
}

.footer-links a:hover {
  color: var(--color-accent);
}

/* ── Animations (Reveal) ── */
@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes videoZoom {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.02);
  }
}

/* ── Preloader ── */
.preloader {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s var(--ease), visibility 0.6s;
}

.preloader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

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

.preloader-box {
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  animation: preloaderPulse 1.8s ease-in-out infinite;
}

@keyframes preloaderPulse {
  0%, 100% {
    opacity: 0.3;
    transform: scale(0.95);
  }
  50% {
    opacity: 1;
    transform: scale(1);
  }
}

.preloader span {
  font-family: var(--font-display);
  font-weight: var(--font-weight-semibold);
  font-size: var(--text-lg);
  color: var(--color-text);
}