/* ==========================================================================
   SH350i — REDEFINED | DESIGN ARCHITECTURE & STYLING
   Google Antigravity Aesthetic: Minimalist, Airy, Architectural, Non-commercial
   ========================================================================== */

:root {
  /* Color Palette - Light Futuristic Monolith */
  --bg-primary: #f8f9fb;
  --bg-secondary: #f0f2f5;
  --bg-surface: rgba(255, 255, 255, 0.75);
  --bg-surface-elevated: #ffffff;
  --text-primary: #0e1013;
  --text-secondary: #636874;
  --text-muted: #959aa5;
  --border-light: rgba(14, 16, 19, 0.07);
  --border-strong: rgba(14, 16, 19, 0.16);
  --accent-titanium: #798190;
  --accent-cyan: #0284c7;
  --accent-glow: rgba(2, 132, 199, 0.15);
  --glass-blur: blur(20px);
  --glass-border: 1px solid rgba(255, 255, 255, 0.6);
  --shadow-subtle: 0 20px 40px -15px rgba(0, 0, 0, 0.05);
  --shadow-card: 0 30px 60px -20px rgba(0, 0, 0, 0.08);

  /* Typography Scales */
  --font-mono: 'Space Grotesk', -apple-system, BlinkMacSystemFont, monospace;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Spacing */
  --section-pad-y: clamp(5rem, 10vw, 10rem);
  --container-max-w: 1320px;
  --container-pad-x: clamp(1.5rem, 4vw, 3.5rem);

  /* Animation Timings */
  --ease-smooth: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.25, 0.8, 0.25, 1);
  --transition-fast: 0.25s var(--ease-out);
  --transition-med: 0.45s var(--ease-smooth);
}

/* Dark Mode Theme Definition */
body.dark-mode {
  --bg-primary: #0a0b0e;
  --bg-secondary: #121419;
  --bg-surface: rgba(18, 20, 25, 0.8);
  --bg-surface-elevated: #161920;
  --text-primary: #f3f5f8;
  --text-secondary: #9aa1b0;
  --text-muted: #626875;
  --border-light: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.18);
  --accent-titanium: #a0a8b7;
  --accent-cyan: #38bdf8;
  --accent-glow: rgba(56, 189, 248, 0.2);
  --glass-border: 1px solid rgba(255, 255, 255, 0.08);
  --shadow-subtle: 0 25px 50px -15px rgba(0, 0, 0, 0.6);
  --shadow-card: 0 30px 60px -20px rgba(0, 0, 0, 0.7);
}

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

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background-color var(--transition-med), color var(--transition-med);
  cursor: default;
}

/* Minimalist Tactile Grain Texture */
.grain-overlay {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 999;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* Custom Cursor Elements */
.custom-cursor {
  position: fixed;
  width: 36px;
  height: 36px;
  border: 1px solid var(--text-primary);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  opacity: 0.35;
  transition: width 0.3s var(--ease-out), height 0.3s var(--ease-out), opacity 0.3s, border-color 0.3s;
}

.custom-cursor-dot {
  position: fixed;
  width: 5px;
  height: 5px;
  background-color: var(--text-primary);
  border-radius: 50%;
  pointer-events: none;
  z-index: 10000;
  transform: translate(-50%, -50%);
  transition: transform 0.1s;
}

.cursor-hover .custom-cursor {
  width: 60px;
  height: 60px;
  opacity: 0.15;
  background-color: var(--text-primary);
  border-color: transparent;
}

@media (pointer: coarse) {
  .custom-cursor, .custom-cursor-dot {
    display: none;
  }
}

/* Common Container */
.section-container {
  width: 100%;
  max-width: var(--container-max-w);
  margin: 0 auto;
  padding: 0 var(--container-pad-x);
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
.header-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: var(--bg-surface);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-light);
  transition: all var(--transition-fast);
}

.header-container {
  max-width: var(--container-max-w);
  margin: 0 auto;
  padding: 1.25rem var(--container-pad-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-tag {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.status-indicator {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
  animation: pulse-glow 3s infinite ease-in-out;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.5; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.15); }
}

.nav-links {
  display: flex;
  gap: 2.25rem;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-decoration: none;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color var(--transition-fast);
  position: relative;
  padding: 0.25rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 1px;
  background-color: var(--text-primary);
  transition: width 0.3s var(--ease-smooth);
}

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

.nav-link:hover::after {
  width: 100%;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.meta-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--border-light);
  border-radius: 99px;
}

.mode-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
}

.toggle-track {
  display: block;
  width: 38px;
  height: 20px;
  border-radius: 99px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-strong);
  position: relative;
  transition: background-color var(--transition-fast);
}

.toggle-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: var(--text-primary);
  transition: transform 0.3s var(--ease-smooth);
}

body.dark-mode .toggle-thumb {
  transform: translateX(18px);
}

/* ==========================================================================
   1. HERO SECTION (GOOGLE ANTIGRAVITY STYLE)
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: 100vh;
  padding-top: calc(5rem + 4vw);
  padding-bottom: 5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-content-wrapper {
  max-width: var(--container-max-w);
  margin: 0 auto;
  padding: 0 var(--container-pad-x);
  width: 100%;
}

.hero-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.badge-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--text-primary);
}

.hero-serial {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.hero-title {
  font-family: var(--font-mono);
  font-size: clamp(2.75rem, 8.5vw, 7.8rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  margin-bottom: 1.75rem;
}

.hero-title .title-line {
  display: block;
}

.title-line.text-highlight {
  color: var(--text-primary);
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-titanium) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-tagline {
  font-size: clamp(1.05rem, 2vw, 1.45rem);
  color: var(--text-secondary);
  font-weight: 300;
  max-width: 640px;
  line-height: 1.5;
  margin-bottom: 3.5rem;
}

/* Main Hero Image Stage */
.hero-image-stage {
  position: relative;
  width: 100%;
  border-radius: 12px;
  overflow: hidden;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-card);
}

.image-parallax-inner {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 ratio */
  overflow: hidden;
}

.hero-bike-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform 0.8s var(--ease-smooth);
}

.hero-image-stage:hover .hero-bike-img {
  transform: scale(1.05);
}

.hero-image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0) 60%, rgba(0,0,0,0.3) 100%);
  pointer-events: none;
}

.telemetry-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.75rem;
  background: var(--bg-surface);
  backdrop-filter: var(--glass-blur);
  border-top: 1px solid var(--border-light);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.telemetry-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.t-label {
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

.t-val {
  color: var(--text-primary);
  font-weight: 500;
  letter-spacing: 0.05em;
}

.scroll-prompt {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 4rem;
  gap: 0.75rem;
}

.scroll-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--text-muted);
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(180deg, var(--text-primary) 0%, transparent 100%);
  animation: scroll-drop 2s infinite var(--ease-smooth);
}

@keyframes scroll-drop {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ==========================================================================
   2. THE CONCEPT
   ========================================================================== */
.concept-section {
  padding: var(--section-pad-y) 0;
  border-top: 1px solid var(--border-light);
}

.concept-grid {
  display: grid;
  grid-template-columns: 1fr 2.2fr;
  gap: clamp(2rem, 6vw, 6rem);
}

.section-index {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--text-muted);
  margin-bottom: 0.85rem;
}

.section-title {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  text-transform: uppercase;
}

.concept-lead {
  font-size: clamp(1.25rem, 2.2vw, 1.85rem);
  font-weight: 300;
  line-height: 1.45;
  color: var(--text-primary);
  margin-bottom: 3rem;
  max-width: 800px;
}

.concept-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.column-heading {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.concept-column p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 300;
  line-height: 1.75;
}

.concept-statement {
  border-left: 2px solid var(--text-primary);
  padding-left: 2rem;
  margin-top: 2rem;
}

.quote-text {
  font-size: 1.1rem;
  font-style: italic;
  font-weight: 300;
  color: var(--text-primary);
  line-height: 1.6;
}

/* ==========================================================================
   3. THE BUILD PROCESS (TIMELINE)
   ========================================================================== */
.build-section {
  padding: var(--section-pad-y) 0;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.section-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 3.5rem;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.section-subtitle {
  max-width: 460px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 300;
  line-height: 1.6;
}

/* Stage Navigator Tabs */
.timeline-nav {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 1rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border-light);
  scrollbar-width: none;
}

.timeline-nav::-webkit-scrollbar {
  display: none;
}

.stage-tab {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  padding: 0.85rem 1.4rem;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.stage-tab .tab-num {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.stage-tab .tab-name {
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.stage-tab:hover {
  color: var(--text-primary);
  background: rgba(0, 0, 0, 0.03);
}

body.dark-mode .stage-tab:hover {
  background: rgba(255, 255, 255, 0.04);
}

.stage-tab.active {
  background: var(--bg-surface-elevated);
  border-color: var(--border-strong);
  color: var(--text-primary);
  box-shadow: var(--shadow-subtle);
}

.stage-tab.active .tab-num {
  color: var(--accent-cyan);
}

/* Active Stage Display Panel */
.stage-display-panel {
  display: grid;
  grid-template-columns: 1.1fr 1.3fr;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: opacity 0.3s ease;
}

.stage-display-content {
  padding: clamp(2rem, 4vw, 3.5rem);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.stage-step-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  color: var(--accent-cyan);
  margin-bottom: 0.6rem;
}

.stage-title {
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.stage-desc {
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.75;
  font-weight: 300;
  margin-bottom: 2.5rem;
}

.stage-specs-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
  border-top: 1px solid var(--border-light);
  padding-top: 1.5rem;
}

.stage-spec-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.spec-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.spec-value {
  font-size: 0.92rem;
  color: var(--text-primary);
  font-weight: 400;
}

/* Stage Visual Frame */
.stage-visual-container {
  background-color: #000;
  position: relative;
  min-height: 380px;
}

.stage-visual-frame {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
}

.stage-visual-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-smooth), opacity 0.4s;
}

.stage-visual-caption {
  position: absolute;
  bottom: 1rem;
  left: 1.25rem;
  right: 1.25rem;
  padding: 0.65rem 1rem;
  background: rgba(14, 16, 19, 0.7);
  backdrop-filter: var(--glass-blur);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: #fff;
  letter-spacing: 0.1em;
}

/* ==========================================================================
   4. VISUAL SHOWCASE (EDITORIAL ASYMMETRIC GRID)
   ========================================================================== */
.showcase-section {
  padding: var(--section-pad-y) 0;
}

.showcase-editorial-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(1.5rem, 3vw, 3rem);
}

.showcase-item {
  display: flex;
  flex-direction: column;
}

/* Magazine Editorial Layout Spans */
.item-hero-full {
  grid-column: span 12;
  margin-bottom: 2rem;
}

.item-detail-brake {
  grid-column: span 5;
}

.item-dynamic-angle {
  grid-column: span 7;
}

.item-cockpit {
  grid-column: span 8;
  grid-column-start: 3;
  margin-top: 2rem;
}

.showcase-img-box {
  position: relative;
  width: 100%;
  border-radius: 10px;
  overflow: hidden;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-light);
}

.item-hero-full .showcase-img-box {
  padding-bottom: 50%;
}

.item-detail-brake .showcase-img-box {
  padding-bottom: 85%;
}

.item-dynamic-angle .showcase-img-box {
  padding-bottom: 60%;
}

.item-cockpit .showcase-img-box {
  padding-bottom: 65%;
}

.showcase-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease-smooth);
}

.showcase-item:hover .showcase-img {
  transform: scale(1.035);
}

.img-hover-sheen {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.06) 0%, transparent 100%);
  pointer-events: none;
}

.showcase-meta {
  margin-top: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.meta-left {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.shot-number {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-cyan);
  font-weight: 600;
  letter-spacing: 0.1em;
}

.shot-title {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-primary);
}

.shot-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 300;
  max-width: 420px;
  line-height: 1.5;
}

/* ==========================================================================
   5. SPECIFICATION (MINIMALIST TYPOGRAPHY)
   ========================================================================== */
.specs-section {
  padding: var(--section-pad-y) 0;
  border-top: 1px solid var(--border-light);
  background-color: var(--bg-secondary);
}

.spec-archive-stamp {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  border: 1px solid var(--border-strong);
  padding: 0.4rem 0.85rem;
  border-radius: 4px;
}

.specs-typography-table {
  border-top: 1px solid var(--border-strong);
  margin-top: 1rem;
}

.spec-row {
  display: grid;
  grid-template-columns: 240px 1.4fr 1.6fr;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border-light);
  align-items: baseline;
  transition: background-color var(--transition-fast), padding-left var(--transition-fast);
}

.spec-row:hover {
  background-color: var(--bg-surface);
  padding-left: 0.85rem;
}

.spec-col-key {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.spec-col-val {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

.spec-col-note {
  font-size: 0.88rem;
  color: var(--text-secondary);
  font-weight: 300;
}

/* ==========================================================================
   6. FINAL SECTION & FOOTER
   ========================================================================== */
.final-section {
  padding: calc(var(--section-pad-y) * 1.3) 0;
  border-top: 1px solid var(--border-light);
  display: flex;
  align-items: center;
}

.final-hero-block {
  max-width: 960px;
}

.final-kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  display: block;
  margin-bottom: 1.5rem;
}

.final-title {
  font-family: var(--font-mono);
  font-size: clamp(3rem, 7.5vw, 6.5rem);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  margin-bottom: 2.5rem;
}

.text-stroke {
  color: transparent;
  -webkit-text-stroke: 1.5px var(--text-primary);
}

.final-body {
  max-width: 700px;
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
  color: var(--text-secondary);
  font-weight: 300;
  line-height: 1.7;
}

/* Minimalist Non-commercial Footer */
.minimal-footer {
  border-top: 1px solid var(--border-light);
  padding: 2.5rem 0;
  background-color: var(--bg-primary);
}

.footer-container {
  max-width: var(--container-max-w);
  margin: 0 auto;
  padding: 0 var(--container-pad-x);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text-primary);
  font-weight: 500;
}

.footer-secondary {
  color: var(--text-muted);
  font-weight: 400;
}

.footer-center {
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.footer-right {
  color: var(--text-muted);
}

/* ==========================================================================
   SCROLL REVEAL ANIMATIONS
   ========================================================================== */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease-smooth), transform 0.8s var(--ease-smooth);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   RESPONSIVE DESIGN BREAKPOINTS
   ========================================================================== */
@media (max-width: 1024px) {
  .concept-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .stage-display-panel {
    grid-template-columns: 1fr;
  }

  .stage-visual-container {
    min-height: 320px;
  }

  .item-hero-full,
  .item-detail-brake,
  .item-dynamic-angle,
  .item-cockpit {
    grid-column: span 12;
    grid-column-start: 1;
  }

  .item-detail-brake .showcase-img-box,
  .item-dynamic-angle .showcase-img-box,
  .item-cockpit .showcase-img-box {
    padding-bottom: 60%;
  }

  .spec-row {
    grid-template-columns: 180px 1.2fr 1.4fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .concept-columns {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .spec-row {
    grid-template-columns: 1fr;
    gap: 0.4rem;
    padding: 1.25rem 0;
  }

  .footer-container {
    flex-direction: column;
    align-items: flex-start;
  }
}