/* ========================================
   NOVA EV Hypercar — Cinematic Styles
   ======================================== */

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

:root {
  --color-bg: #000000;
  --color-bg-elevated: #050508;
  --color-surface: #0a0a0f;
  --color-surface-hover: #12121a;
  --color-border: #1a1a2e;
  --color-border-light: #252540;
  --color-text: #f0f0f5;
  --color-text-secondary: #8888aa;
  --color-text-muted: #555570;
  --color-accent: #00d4ff;
  --color-accent-secondary: #7b61ff;
  --color-accent-glow: rgba(0, 212, 255, 0.15);
  --color-neon-pink: #ff006e;
  --color-neon-blue: #00d4ff;
  --color-neon-purple: #7b61ff;
  --color-success: #00ff88;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Space Grotesk', 'Inter', sans-serif;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--color-bg);
  color: var(--color-text);
  overflow-x: hidden;
  line-height: 1.6;
}

html.lenis, html.lenis body {
  height: auto;
}

.lenis.lenis-smooth {
  scroll-behavior: auto !important;
}

/* ========================================
   Loading Screen
   ======================================== */
.loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-bg);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

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

.loader-content {
  text-align: center;
}

.loader-logo {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  color: var(--color-text);
  margin-bottom: 2rem;
}

.loader-bar-container {
  width: 200px;
  height: 2px;
  background: var(--color-border);
  border-radius: 1px;
  margin: 0 auto 1.5rem;
  overflow: hidden;
}

.loader-bar {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-secondary));
  border-radius: 1px;
  transition: width 0.3s ease;
}

.loader-text {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
}

/* ========================================
   Navigation
   ======================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 3rem;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  transform: translateY(-100%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav.visible {
  transform: translateY(0);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.15em;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
}

.nav-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: var(--color-text);
}

.nav-cta {
  font-family: var(--font-main);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-bg);
  background: var(--color-text);
  border: none;
  padding: 0.6rem 1.5rem;
  border-radius: 100px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.3s ease;
  letter-spacing: 0.02em;
}

.nav-cta:hover {
  transform: scale(1.03);
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

/* ========================================
   Progress Bar
   ======================================== */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 1001;
  background: transparent;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-neon-blue), var(--color-neon-purple), var(--color-neon-pink));
  transition: width 0.1s linear;
}

/* ========================================
   Section 1: Intro — Rain-Soaked Road
   ======================================== */
.intro-section {
  position: relative;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-bg);
}

#intro-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.rain-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
  opacity: 0.3;
}

.intro-content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: 0 2rem;
  pointer-events: none;
}

.intro-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--color-accent);
  border: 1px solid rgba(0, 212, 255, 0.3);
  padding: 0.5rem 1.5rem;
  border-radius: 100px;
  margin-bottom: 2rem;
  opacity: 0;
  transform: translateY(20px);
}

.intro-title {
  font-family: var(--font-display);
  margin-bottom: 1.5rem;
}

.intro-title-line {
  display: block;
  font-size: clamp(4rem, 12vw, 10rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.9;
  opacity: 0;
  transform: translateY(40px);
}

.intro-title-accent {
  background: linear-gradient(135deg, var(--color-neon-blue) 0%, var(--color-neon-purple) 50%, var(--color-neon-pink) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.intro-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  color: var(--color-text-secondary);
  font-weight: 400;
  margin-bottom: 4rem;
  opacity: 0;
  transform: translateY(20px);
}

.intro-stats {
  display: flex;
  justify-content: center;
  gap: 4rem;
  margin-bottom: 4rem;
  opacity: 0;
}

.intro-stat {
  text-align: center;
}

.stat-value {
  display: block;
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  opacity: 0;
}

.scroll-indicator span {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 1.5px solid var(--color-text-muted);
  border-bottom: 1.5px solid var(--color-text-muted);
  transform: rotate(45deg);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: rotate(45deg) translateY(0); }
  50% { opacity: 0.5; transform: rotate(45deg) translateY(6px); }
}

/* ========================================
   Section 2: Deconstruction
   ======================================== */
.deconstruct-section {
  position: relative;
  height: 400vh;
}

.deconstruct-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  width: 100%;
  overflow: hidden;
}

#deconstruct-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.deconstruct-overlay {
  position: absolute;
  bottom: 10%;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  text-align: center;
  pointer-events: none;
  max-width: 600px;
}

.deconstruct-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--color-accent);
  margin-bottom: 1rem;
  opacity: 0;
}

.deconstruct-heading {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.heading-line {
  display: block;
  opacity: 0;
  transform: translateY(20px);
}

.heading-accent {
  background: linear-gradient(135deg, var(--color-neon-blue), var(--color-neon-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.deconstruct-desc {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  opacity: 0;
  transform: translateY(15px);
}

/* ========================================
   Section 3: Technical Reveal — Chassis
   ======================================== */
.chassis-section {
  position: relative;
  height: 500vh;
}

.chassis-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  width: 100%;
  overflow: hidden;
}

#chassis-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.chassis-content {
  position: relative;
  z-index: 2;
  height: 100%;
  width: 100%;
  display: flex;
  align-items: center;
  pointer-events: none;
}

.tech-card {
  position: absolute;
  padding: 2rem;
  max-width: 320px;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  pointer-events: auto;
  opacity: 0;
  transform: translateY(30px);
  transition: border-color 0.3s ease;
}

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

.tech-card-1 { left: 5%; top: 15%; }
.tech-card-2 { right: 5%; top: 20%; }
.tech-card-3 { left: 5%; bottom: 20%; }
.tech-card-4 { right: 5%; bottom: 15%; }

.tech-icon {
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.tech-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.tech-card p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.tech-spec {
  display: flex;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

.tech-spec-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.tech-spec-value {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
}

/* ========================================
   Section 4: Wind Tunnel — Aerodynamics
   ======================================== */
.aero-section {
  position: relative;
  height: 400vh;
}

.aero-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  width: 100%;
  overflow: hidden;
}

#aero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.aero-content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 10vh 5% 8vh;
  pointer-events: none;
}

.aero-header {
  max-width: 500px;
}

.aero-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.aero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.aero-title span {
  display: block;
}

.aero-accent {
  background: linear-gradient(135deg, var(--color-neon-blue), var(--color-neon-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.aero-desc {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 400px;
}

.aero-metrics {
  display: flex;
  gap: 4rem;
}

.aero-metric {
  text-align: center;
}

.metric-value {
  display: block;
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-text);
  line-height: 1;
}

.metric-unit {
  display: block;
  font-size: 0.875rem;
  color: var(--color-accent);
  margin-bottom: 0.25rem;
}

.metric-label {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

/* ========================================
   Section 5: Specifications Grid
   ======================================== */
.specs-section {
  padding: 10rem 3rem;
  background: var(--color-bg);
  position: relative;
}

.specs-header {
  text-align: center;
  margin-bottom: 5rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.spec-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 2.5rem;
  opacity: 0;
  transform: translateY(40px);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.4s ease,
              box-shadow 0.4s ease;
}

.spec-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4),
              0 0 40px rgba(0, 212, 255, 0.05);
}

.spec-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-border-light);
  margin-bottom: 1rem;
  line-height: 1;
}

.spec-card h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
}

.spec-list {
  list-style: none;
}

.spec-list li {
  display: flex;
  justify-content: space-between;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9375rem;
}

.spec-list li:last-child {
  border-bottom: none;
}

.spec-list li span:first-child {
  color: var(--color-text-secondary);
}

.spec-list li span:last-child {
  font-weight: 600;
  color: var(--color-text);
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
  padding: 12rem 2rem;
  background: radial-gradient(ellipse at 50% 50%, #0a0a1a 0%, #000 70%);
  text-align: center;
}

.cta-content {
  max-width: 600px;
  margin: 0 auto;
  opacity: 0;
  transform: translateY(40px);
}

.cta-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.cta-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: 3rem;
}

.cta-price {
  margin-bottom: 2rem;
}

.price-from {
  display: block;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.5rem;
}

.price-amount {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #fff 0%, #888 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cta-button {
  font-family: var(--font-main);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-bg);
  background: var(--color-text);
  border: none;
  padding: 1.125rem 3rem;
  border-radius: 100px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.3s ease;
  margin-bottom: 1.5rem;
}

.cta-button:hover {
  transform: scale(1.03);
  box-shadow: 0 0 40px rgba(255, 255, 255, 0.2);
}

.cta-note {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ========================================
   Footer
   ======================================== */
.footer {
  text-align: center;
  padding: 4rem 2rem;
  border-top: 1px solid var(--color-border);
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.footer-text {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
}

.footer-small {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
  .tech-card {
    position: relative;
    left: auto !important;
    right: auto !important;
    top: auto !important;
    bottom: auto !important;
  }

  .chassis-content {
    flex-direction: column;
    gap: 1rem;
    padding: 2rem;
    overflow-y: auto;
    align-items: flex-start;
  }

  .aero-metrics {
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .nav {
    padding: 0.75rem 1.5rem;
  }

  .nav-links {
    display: none;
  }

  .intro-stats {
    flex-direction: column;
    gap: 1.5rem;
  }

  .aero-metrics {
    flex-direction: column;
    gap: 2rem;
  }

  .specs-section {
    padding: 5rem 1.5rem;
  }

  .specs-grid {
    grid-template-columns: 1fr;
  }
}