/* ==========================================================================
   BUNDEZE.COM — MASTER STYLESHEET
   Industrial tool catalog aesthetic. Bold, hands-on, premium but not precious.

   TABLE OF CONTENTS:
   1.  Reset & Variables
   2.  Effects & Animations
   3.  Typography
   4.  Navigation
   5.  Hero
   6.  Sections (shared)
   7.  How It Works
   8.  Method Sections (Bundle, Lash, Tie)
   9.  Image Galleries
   10. Innovate
   11. Rebuild
   12. Buy / Products
   13. Footer
   14. Responsive
   ========================================================================== */


/* --------------------------------------------------------------------------
   1. RESET & VARIABLES
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--blue);
  color: var(--white-pure);
  padding: 0.5rem 1.5rem;
  z-index: 10002;
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.85rem;
}
.skip-link:focus {
  top: 0.5rem;
  color: var(--white-pure);
}

:root {
  /* Brand */
  --blue: #1c75bc;
  --blue-light: #2a8fd4;
  --blue-glow: rgba(28, 117, 188, 0.25);
  --dark: #231f20;
  --dark-deep: #1a1718;
  --dark-card: #2a2526;
  --dark-border: #3a3536;

  /* Neutrals */
  --white: #f5f2ed;
  --white-pure: #ffffff;
  --cream: #d2d2d4;
  --gray: #8a8382;
  --gray-light: #b5b0ad;

  /* Accent */
  --orange: #e8712a;
  --red: #c0392b;
  --green: #27ae60;

  /* Type */
  --font-display: 'Saira Condensed', 'Arial Narrow', sans-serif;
  --font-body: 'Barlow', 'Helvetica Neue', Arial, sans-serif;

  /* Spacing */
  --section-pad: clamp(2rem, 5vw, 4rem);
  --container-max: 1200px;
  --gap: clamp(1rem, 3vw, 2rem);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--dark);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a { color: var(--blue); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--blue-light); }

ul { list-style: none; }


/* --------------------------------------------------------------------------
   2. EFFECTS & ANIMATIONS
   -------------------------------------------------------------------------- */

/* Scroll reveals */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.6s; }

/* Scroll progress */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 100%;
  background: linear-gradient(90deg, var(--blue), var(--blue-light));
  box-shadow: 0 0 10px var(--blue-glow);
  z-index: 10001;
  pointer-events: none;
  transform: scaleX(0);
  transform-origin: left;
  will-change: transform;
}

/* Grain overlay for dark sections */
.hero-bg-grain,
.section-dark::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  background-repeat: repeat;
  pointer-events: none;
  z-index: 0;
}


/* --------------------------------------------------------------------------
   3. TYPOGRAPHY
   -------------------------------------------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.05;
  text-transform: uppercase;
  letter-spacing: -0.01em;
}

strong { font-weight: 600; }
.text-blue { color: var(--blue); }


/* --------------------------------------------------------------------------
   4. NAVIGATION
   -------------------------------------------------------------------------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 0 1.5rem;
  background: var(--cream);
  transition: background 0.3s, box-shadow 0.3s, padding 0.3s;
}
.nav.scrolled {
  background: rgba(26, 23, 24, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.nav-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo-img {
  height: 56px;
  width: auto;
  transition: filter 0.3s;
}
.nav.scrolled .nav-logo-img {
  filter: brightness(0) invert(1); /* White logo on scrolled dark nav */
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}
.nav-links a {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--dark); }
.nav.scrolled .nav-links a { color: var(--gray-light); }
.nav.scrolled .nav-links a:hover { color: var(--white-pure); }

.nav-cta {
  background: var(--blue);
  color: var(--white-pure) !important;
  padding: 0.5rem 1.25rem;
  border-radius: 2px;
}
.nav-cta:hover {
  background: var(--blue-light) !important;
}

/* Mobile toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1001;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dark);
  margin: 5px 0;
  transition: transform 0.3s, opacity 0.3s, background 0.3s;
}
.nav.scrolled .nav-toggle span {
  background: var(--white);
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }


/* --------------------------------------------------------------------------
   5. HERO
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--white);
  color: var(--dark);
  padding: 6rem 1.5rem 3rem;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 150%;
  background: radial-gradient(ellipse, rgba(28, 117, 188, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
}

.hero-super {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--blue);
  margin-bottom: 1rem;
}

.hero-title {
  font-size: clamp(3.2rem, 7vw, 6rem);
  color: var(--dark);
  margin-bottom: 1.25rem;
}
.hero-dot { color: var(--blue); }

.hero-sub {
  font-size: 1.15rem;
  color: var(--gray);
  max-width: 480px;
  margin-bottom: 2rem;
  line-height: 1.7;
}

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

.hero-video {
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-video-player {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: 12px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.12);
}

/* Scroll hint */
.hero-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--gray-light);
  font-family: var(--font-display);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  animation: bob 2s ease-in-out infinite;
}
@keyframes bob {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* Buttons */
.btn {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.85rem 2rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.25s var(--ease-out);
  text-align: center;
}
.btn-primary {
  background: var(--blue);
  color: var(--white-pure);
  border-color: var(--blue);
}
.btn-primary:hover {
  background: var(--blue-light);
  border-color: var(--blue-light);
  color: var(--white-pure);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--blue-glow);
}
.btn-outline {
  background: transparent;
  color: var(--dark);
  border-color: var(--gray);
}
.btn-outline:hover {
  border-color: var(--dark);
  color: var(--dark);
  transform: translateY(-2px);
}
.section-dark .btn-outline {
  color: var(--white);
  border-color: var(--gray);
}
.section-dark .btn-outline:hover {
  color: var(--white-pure);
  border-color: var(--white-pure);
}
.btn-buy {
  background: var(--blue);
  color: var(--white-pure);
  border-color: var(--blue);
  width: 100%;
}
.btn-buy:hover {
  background: var(--blue-light);
  border-color: var(--blue-light);
  color: var(--white-pure);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--blue-glow);
}


/* --------------------------------------------------------------------------
   6. SECTIONS (shared)
   -------------------------------------------------------------------------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  width: 100%;
}

.section {
  position: relative;
  padding: var(--section-pad) 1.5rem;
}

.section-dark {
  background: var(--dark-deep);
  color: var(--white);
}
.section-dark .method-description { color: var(--gray-light); }
.section-dark .section-subtitle { color: var(--blue-light); }

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-number {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--blue);
  display: block;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: 0.5rem;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--blue);
  font-weight: 600;
  max-width: 600px;
  margin: 0 auto;
}

.divider-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--dark-border), transparent);
  max-width: 200px;
  margin: 0 auto;
}
.section-dark .divider-line {
  background: linear-gradient(90deg, transparent, var(--gray), transparent);
}


/* --------------------------------------------------------------------------
   7. HOW IT WORKS
   -------------------------------------------------------------------------- */
#how-it-works {
  background: var(--cream);
  padding-top: clamp(2rem, 5vw, 4rem);
  padding-bottom: clamp(2rem, 5vw, 4rem);
}
#how-it-works .section-number { color: var(--blue); }
#how-it-works .section-title { color: var(--dark); }
#how-it-works .section-subtitle { color: var(--blue); }

.how-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.how-demo-frame {
  background: var(--white-pure);
  border: 1px solid var(--cream);
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.how-demo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.2s ease;
}
.how-demo-caption {
  text-align: center;
  margin-top: 1rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--dark);
}

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

.method-card {
  background: var(--white-pure);
  border: 1px solid var(--cream);
  padding: 1.75rem;
  border-radius: 12px;
  transition: border-color 0.3s, transform 0.3s var(--ease-out);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.method-card:hover,
.method-card.method-active {
  border-color: var(--blue);
  transform: translateY(-4px);
}
.method-card .method-icon {
  font-size: 1.5rem;
  display: block;
  margin-bottom: 0.75rem;
  color: var(--blue);
}
.method-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: var(--dark);
}
.method-card p {
  font-size: 0.9rem;
  color: var(--gray);
  line-height: 1.5;
}
.section-dark .method-card {
  background: var(--dark-card);
  border-color: var(--dark-border);
  box-shadow: none;
}
.section-dark .method-card h3 { color: var(--white-pure); }
.section-dark .method-card p { color: var(--gray-light); }


/* --------------------------------------------------------------------------
   8. METHOD SECTIONS (Bundle, Lash, Tie)
   -------------------------------------------------------------------------- */
.method-header {
  margin-bottom: 3rem;
}
.method-name {
  font-size: clamp(3rem, 8vw, 7rem);
  line-height: 0.9;
  margin-bottom: 0.25rem;
}
.section-dark .method-name { color: var(--white-pure); }

.method-tagline {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1rem, 2vw, 1.3rem);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--blue);
  margin-bottom: 1rem;
}

.method-description {
  font-size: 1.05rem;
  color: var(--gray);
  max-width: 640px;
  line-height: 1.7;
}


/* --------------------------------------------------------------------------
   9. IMAGE GALLERIES
   -------------------------------------------------------------------------- */
.gallery {
  overflow: visible;
}

.gallery-track {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--gap);
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  background: var(--cream);
}
.section-dark .gallery-item {
  background: var(--dark-card);
}

.gallery-item img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  transition: transform 0.5s var(--ease-out), opacity 0.2s ease;
}
.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-item figcaption {
  padding: 0.75rem 1rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--gray);
}
.section-dark .gallery-item figcaption {
  color: var(--gray-light);
}


/* --------------------------------------------------------------------------
   10. INNOVATE
   -------------------------------------------------------------------------- */
.innovate-content {
  margin-bottom: 3rem;
}

.innovate-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap);
}


/* --------------------------------------------------------------------------
   11. REBUILD
   -------------------------------------------------------------------------- */
.rebuild-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-bottom: 4rem;
}

.rebuild-exploded {
  width: 100%;
  max-width: 500px;
  background: var(--white-pure);
  border-radius: 4px;
  padding: 1.5rem;
  box-shadow: 0 2px 12px rgba(0,0,0,0.15);
}

.rebuild-hero-caption {
  margin-top: 1rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray);
}

.rebuild-points {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.rebuild-point h3 {
  font-size: 1.3rem;
  color: var(--dark);
  margin-bottom: 0.35rem;
  text-transform: none;
}
.section-dark .rebuild-point h3 { color: var(--white-pure); }
.rebuild-point p {
  color: var(--gray);
  font-size: 0.95rem;
  max-width: 400px;
}
.section-dark .rebuild-point p { color: var(--gray-light); }

.rebuild-not-disposable {
  text-align: center;
  padding: 3rem 0;
}
.rebuild-statement {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--dark);
  padding: 2rem 0;
}
.section-dark .rebuild-statement { color: var(--white-pure); }
.section-dark .rebuild-hero-caption { color: var(--gray-light); }

.rebuild-colors {
  display: flex;
  gap: 0.6rem;
  margin-top: 0.75rem;
  flex-wrap: wrap;
}
.rebuild-color-dot {
  width: 28px;
  height: 28px;
  border-radius: 3px;
  border: 2px solid var(--white-pure);
  box-shadow: 0 0 0 1px rgba(255,255,255,0.15);
  transition: transform 0.2s;
}
.rebuild-color-dot:hover {
  transform: scale(1.15);
}


/* --------------------------------------------------------------------------
   12a. CUSTOM
   -------------------------------------------------------------------------- */
.custom-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
}

.custom-features {
  list-style: none;
  margin: 1.5rem 0 2rem;
}
.custom-features li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.6rem;
  font-size: 0.95rem;
  color: var(--gray);
}
.custom-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--blue);
  font-weight: 700;
}

.custom-proof {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.custom-quote {
  background: var(--dark-card);
  border-left: 4px solid var(--blue);
  border-radius: 0 12px 12px 0;
  padding: 2rem;
}
.custom-quote-text {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  font-style: italic;
  color: var(--white);
  line-height: 1.5;
}

.custom-clients-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray);
  margin-bottom: 0.35rem;
}
.custom-clients-list {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--white);
}

.section-dark .custom-features li {
  color: var(--gray-light);
}

@media (max-width: 960px) {
  .custom-layout { grid-template-columns: 1fr; gap: 2rem; }
}


/* --------------------------------------------------------------------------
   12b. BUY / PRODUCTS
   -------------------------------------------------------------------------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}

.product-card {
  background: var(--white-pure);
  border: 1px solid var(--cream);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  transition: border-color 0.3s, transform 0.3s var(--ease-out);
}
.product-card:hover {
  border-color: var(--blue);
  transform: translateY(-4px);
}

.product-img-wrap {
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--cream);
}
.product-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 1.5rem;
  transition: transform 0.5s var(--ease-out);
}
.product-card:hover .product-img-wrap img {
  transform: scale(1.05);
}

.product-info {
  padding: 1.5rem;
}
.product-info h3 {
  font-size: 1.15rem;
  color: var(--dark);
  margin-bottom: 0.5rem;
  text-transform: none;
}
.product-detail {
  font-size: 0.9rem;
  color: var(--gray);
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

.product-colors {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}
.color-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--cream);
  cursor: pointer;
  transition: border-color 0.2s, transform 0.2s;
}
.color-dot:hover {
  border-color: var(--dark);
  transform: scale(1.15);
}

.product-lengths {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.length-btn {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 0.4rem 1rem;
  border: 2px solid var(--cream);
  background: transparent;
  color: var(--gray);
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.2s;
}
.length-btn:hover {
  border-color: var(--blue);
  color: var(--dark);
}
.length-btn.active {
  border-color: var(--blue);
  background: var(--blue);
  color: var(--white-pure);
}

.color-dot.active {
  border-color: var(--blue) !important;
  box-shadow: 0 0 0 2px var(--blue);
}
.color-dot.out-of-stock {
  opacity: 0.25;
  cursor: not-allowed;
  pointer-events: none;
}
.color-dot.out-of-stock::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--dark);
  transform: rotate(-45deg);
}
.color-dot {
  position: relative;
}
.btn-disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

/* -- Cart icon in nav -- */
.nav-cart {
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
  color: var(--gray);
  padding: 0.25rem;
  transition: color 0.2s;
}
.nav-cart:hover { color: var(--dark); }
.nav.scrolled .nav-cart { color: var(--gray-light); }
.nav.scrolled .nav-cart:hover { color: var(--white-pure); }
.cart-count {
  position: absolute;
  top: -6px;
  right: -10px;
  background: var(--blue);
  color: var(--white-pure);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.65rem;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s;
}
.cart-count.has-items { opacity: 1; }

/* -- Cart drawer -- */
.cart-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.cart-overlay.open {
  opacity: 1;
  pointer-events: auto;
}
.cart-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 380px;
  max-width: 90vw;
  height: 100vh;
  height: 100dvh;
  background: var(--white-pure);
  z-index: 2001;
  transform: translateX(100%);
  transition: transform 0.35s var(--ease-out);
  display: flex;
  flex-direction: column;
  overscroll-behavior: contain;
  box-shadow: -4px 0 20px rgba(0,0,0,0.15);
}

.cart-collapse {
  position: absolute;
  left: -32px;
  top: 0;
  width: 32px;
  height: 100%;
  background: var(--blue);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white-pure);
  opacity: 0;
  transition: opacity 0.3s;
  border-radius: 4px 0 0 4px;
}
.cart-drawer.open .cart-collapse {
  opacity: 1;
}
.cart-collapse:hover {
  background: var(--blue-light);
}
.cart-drawer.open {
  transform: translateX(0);
}
.cart-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--cream);
}
.cart-drawer-header h3 {
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.cart-close {
  background: none;
  border: none;
  font-size: 1.75rem;
  cursor: pointer;
  color: var(--gray);
  line-height: 1;
  padding: 0.25rem;
}
.cart-close:hover { color: var(--dark); }
.cart-items {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 1rem 1.5rem;
}
.cart-empty {
  text-align: center;
  color: var(--gray);
  padding: 2rem 0;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.85rem;
}
.cart-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 1rem 0;
  border-bottom: 1px solid var(--cream);
}
.cart-item-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.cart-item-variant {
  font-size: 0.8rem;
  color: var(--gray);
  margin-top: 0.15rem;
}
.cart-item-qty {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.5rem;
}
.cart-item-qty button {
  background: none;
  border: 1px solid var(--cream);
  width: 26px;
  height: 26px;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 2px;
  color: var(--dark);
}
.cart-item-qty button:hover { border-color: var(--blue); }
.cart-item-qty span {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  min-width: 1.5rem;
  text-align: center;
}
.cart-item-price {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  white-space: nowrap;
}
.cart-footer {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--cream);
}
.cart-total {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}
.cart-checkout-btn {
  width: 100%;
}

/* "Added!" flash animation */
@keyframes addFlash {
  0% { background: var(--green); border-color: var(--green); }
  100% { background: var(--blue); border-color: var(--blue); }
}
.btn-add-flash {
  animation: addFlash 0.6s ease;
}

.product-card-crosslink {
  border-color: var(--blue);
  border-style: dashed;
}

.product-actions {
  display: flex;
  gap: 0.5rem;
}
.product-actions .btn {
  flex: 1;
  width: auto;
  font-size: 0.75rem;
  padding: 0.75rem 0.5rem;
  white-space: nowrap;
}


/* --------------------------------------------------------------------------
   13. FOOTER
   -------------------------------------------------------------------------- */
.footer {
  background: var(--dark);
  color: var(--gray);
  padding: 4rem 1.5rem 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--dark-border);
}

.footer-logo {
  height: 60px;
  width: auto;
  margin-bottom: 1rem;
  opacity: 0.85;
  filter: brightness(0) invert(1); /* White logo on dark footer */
}

.footer-tagline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-light);
  margin-bottom: 1rem;
}

.footer-company {
  font-size: 0.85rem;
  line-height: 1.6;
}
.footer-company a {
  color: var(--blue);
}

.footer-nav h4 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--gray-light);
  margin-bottom: 1rem;
  font-weight: 700;
}
.footer-nav li { margin-bottom: 0.5rem; }
.footer-nav a {
  font-size: 0.9rem;
  color: var(--gray);
  transition: color 0.2s;
}
.footer-nav a:hover { color: var(--white); }

.footer-bottom {
  padding-top: 2rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--gray);
}


/* --------------------------------------------------------------------------
   14. RESPONSIVE
   -------------------------------------------------------------------------- */
@media (max-width: 960px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2rem;
  }
  .hero-sub { margin: 0 auto 2rem; }
  .hero-actions { justify-content: center; }
  .hero-video { width: 100%; }

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

  .rebuild-grid { grid-template-columns: 1fr; gap: 2rem; }
  .rebuild-exploded { margin: 0 auto; }

  .product-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }

  .innovate-gallery { grid-template-columns: 1fr 1fr; }

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

@media (max-width: 680px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 23, 24, 0.98);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    z-index: 999;
  }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 1.2rem; color: var(--white) !important; }
  .nav-toggle { display: block; }

  .hero { min-height: auto; padding: 8rem 1.5rem 4rem; }
  .hero-title { font-size: clamp(2.5rem, 12vw, 3.5rem); }

  .gallery-track { grid-template-columns: 1fr 1fr; }
  .innovate-gallery { grid-template-columns: 1fr; }

  .method-name { font-size: clamp(2.5rem, 14vw, 4rem); }

  .how-methods { grid-template-columns: 1fr; }

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

@media (max-width: 420px) {
  .gallery-track { grid-template-columns: 1fr; }
}