/* ==========================================================================
   LEWIS FURN TECH - CLEAN MODERN REFRESH
   Subtle Dark Minimalist Aesthetic Matching the Brand Navy
   2027 Flagship Ergonomic Seating Showcase
   ========================================================================== */

:root {
  /* Brand Navy Palette (Matching Logo) */
  --bg-main: #0c111e;
  --bg-surface: #121829;
  --bg-card: #161e32;
  --bg-card-border: rgba(255, 255, 255, 0.08);

  /* Accents from Logo */
  --lime-accent: #a3e635;
  --lime-hover: #b4f43a;
  --cyan-accent: #79c7ec;

  /* Typography Colors */
  --text-white: #ffffff;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-main);
  color-scheme: dark;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

button, input, textarea {
  font: inherit;
}

.container {
  width: min(1200px, calc(100% - 3rem));
  margin: 0 auto;
}

.section-shell {
  padding: 6.5rem 0;
}

/* Typography Helpers */
h1, h2, h3 {
  color: var(--text-white);
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-weight: 700;
}

h1 {
  font-size: clamp(2.4rem, 4.5vw, 3.8rem);
  margin-bottom: 1.25rem;
}

h2 {
  font-size: clamp(2rem, 3.2vw, 2.75rem);
  margin-bottom: 1rem;
}

p {
  color: var(--text-secondary);
}

.eyebrow,
.section-tag {
  display: inline-block;
  color: var(--lime-accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 0.85rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.75rem;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.25s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--lime-accent);
  color: #0c111e;
  font-weight: 700;
}

.btn-primary:hover {
  background: var(--lime-hover);
  box-shadow: 0 8px 24px rgba(163, 230, 53, 0.25);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-white);
  border: 1px solid var(--bg-card-border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(12, 17, 30, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--bg-card-border);
}

.nav-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
}

.brand-logo {
  height: 42px;
  width: auto;
  display: block;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2.25rem;
}

.main-nav a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
}

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

.nav-cta {
  padding: 0.65rem 1.4rem;
  font-size: 0.88rem;
}

/* ==========================================================================
   HERO SECTION WITH 2027 REALISTIC ERGONOMIC CHAIR
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
  padding: 4.5rem 0 3.5rem 0;
  background: radial-gradient(circle at 75% 45%, #151e36 0%, var(--bg-main) 70%);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  align-items: center;
  gap: 3rem;
}

.hero-content {
  max-width: 540px;
  position: relative;
  z-index: 2;
}

.hero-text {
  font-size: 1.15rem;
  line-height: 1.65;
  margin-bottom: 2rem;
  color: #cbd5e1;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.hero-note {
  font-size: 0.82rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

/* 2027 Ergonomic Chair Interactive Stage */
.hero-chair-stage {
  position: relative;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.chair-viewport {
  position: relative;
  width: 100%;
  max-width: 520px;
  perspective: 1200px;
  transform-style: preserve-3d;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* View Angle Switcher */
.view-switch-bar {
  display: inline-flex;
  gap: 0.4rem;
  background: rgba(18, 24, 41, 0.8);
  border: 1px solid var(--bg-card-border);
  backdrop-filter: blur(12px);
  padding: 0.3rem;
  border-radius: 999px;
  margin-bottom: 1.25rem;
  z-index: 10;
}

.view-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 0.4rem 0.95rem;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.view-btn:hover {
  color: var(--text-white);
}

.view-btn.active {
  background: rgba(255, 255, 255, 0.1);
  color: var(--lime-accent);
}

/* Interactive 3D Card */
.chair-3d-card {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 28px;
  background: radial-gradient(circle at 50% 50%, #11182c 0%, #070b14 85%);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(255, 255, 255, 0.06);
  overflow: hidden;
  cursor: grab;
  transform-origin: center center;
  will-change: transform;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chair-3d-card:active {
  cursor: grabbing;
}

.chair-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 1.5rem;
  opacity: 0;
  transition: opacity 0.45s ease;
  pointer-events: none;
  user-select: none;
}

.chair-img.active {
  opacity: 1;
}

/* Dynamic Lighting Glare */
.chair-lighting-glare {
  position: absolute;
  inset: 0;
  border-radius: 28px;
  background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.12) 0%, transparent 60%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

/* Optical Zoom Indicator */
.scroll-zoom-badge {
  position: absolute;
  bottom: 16px;
  right: 16px;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: rgba(12, 17, 30, 0.75);
  border: 1px solid var(--bg-card-border);
  backdrop-filter: blur(8px);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--lime-accent);
  letter-spacing: 0.08em;
  pointer-events: none;
}

.zoom-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--lime-accent);
  box-shadow: 0 0 8px var(--lime-accent);
}

/* ==========================================================================
   ABOUT SECTION
   ========================================================================== */
.about-section {
  background: var(--bg-surface);
  border-top: 1px solid var(--bg-card-border);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
}

.about-copy p {
  margin-bottom: 1.25rem;
  font-size: 1.05rem;
  line-height: 1.7;
}

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: 18px;
  padding: 2.25rem;
}

.about-card h3 {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  color: var(--text-white);
}

.about-points {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.about-points li {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-secondary);
  position: relative;
  padding-left: 1.5rem;
}

.about-points li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--lime-accent);
  font-weight: bold;
}

.about-points strong {
  color: var(--text-primary);
}

/* ==========================================================================
   COLLECTIONS PLACEHOLDER SECTION (No eCommerce)
   ========================================================================== */
.collections-section {
  background: var(--bg-main);
  border-top: 1px solid var(--bg-card-border);
}

.section-heading {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 3rem auto;
}

.collections-placeholder-box {
  background: var(--bg-card);
  border: 1px dashed rgba(255, 255, 255, 0.16);
  border-radius: 20px;
  padding: 3.5rem 2rem;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.placeholder-icon {
  width: 68px;
  height: 68px;
  border-radius: 16px;
  background: rgba(163, 230, 53, 0.1);
  color: var(--lime-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem auto;
}

.collections-placeholder-box h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.collections-placeholder-box p {
  font-size: 1.05rem;
  max-width: 520px;
  margin: 0 auto 2rem auto;
  line-height: 1.6;
}

/* ==========================================================================
   CONTACT SECTION (Plain & Simple Quote Form)
   ========================================================================== */
.contact-section {
  background: var(--bg-surface);
  border-top: 1px solid var(--bg-card-border);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 3rem;
  align-items: stretch;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: 20px;
  padding: 2.75rem;
}

.form-card h2,
.info-card h2 {
  font-size: 1.85rem;
  margin-bottom: 1.75rem;
}

.form-row {
  margin-bottom: 1.25rem;
}

.form-row.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

label {
  display: flex;
  flex-direction: column;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  gap: 0.45rem;
}

input,
textarea {
  background: var(--bg-surface);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  padding: 0.85rem 1rem;
  color: var(--text-white);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s ease;
}

input:focus,
textarea:focus {
  border-color: var(--lime-accent);
}

.submit-btn {
  width: 100%;
  margin-top: 0.5rem;
}

.form-success {
  margin-top: 1.25rem;
  color: var(--lime-accent);
  font-weight: 500;
  font-size: 0.95rem;
}

/* Info Panel */
.info-block {
  margin-bottom: 1.75rem;
}

.info-block h3 {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.info-block p {
  font-size: 1rem;
  line-height: 1.6;
}

.info-block a {
  color: var(--text-primary);
}

.info-block a:hover {
  color: var(--lime-accent);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: var(--bg-main);
  border-top: 1px solid var(--bg-card-border);
  padding: 2.5rem 0;
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */
@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2.5rem;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero-actions {
    justify-content: center;
  }

  .chair-viewport {
    max-width: 440px;
  }

  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .form-row.two-col {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .section-shell {
    padding: 4.5rem 0;
  }

  .nav-cta {
    display: none;
  }

  .contact-card {
    padding: 2rem 1.5rem;
  }

  .chair-viewport {
    max-width: 340px;
  }
}