/**
 * Bison Oilfield Equipments - Master Stylesheet
 * Premium Industrial + Editorial + Modern Engineering + Cinematic + Refined
 */

@import url('https://fonts.googleapis.com/css2?family=Bodoni+Moda:ital,opsz,wght@0,6..96,400;0,6..96,500;0,6..96,600;1,6..96,400&family=DM+Mono:wght@400;500&family=Manrope:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Master Color Tokens */
  --color-lime: #A8E600;
  --color-lime-hover: #96CE00;
  --color-lime-glow: rgba(168, 230, 0, 0.25);
  --color-graphite: #0D1212;
  --color-graphite-surface: #141A1A;
  --color-graphite-card: #1B2222;
  --color-offwhite: #F7F7F3;
  --color-steel: #A8ADAA;
  --color-steel-light: #E2E5E2;
  --color-steel-dark: #6F7572;
  --color-white: #FFFFFF;
  --color-border-light: rgba(168, 173, 170, 0.25);
  --color-border-dark: rgba(168, 173, 170, 0.15);

  /* Typography */
  --font-display: 'Bodoni Moda', 'Didot', 'Bodoni MT', serif;
  --font-body: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'DM Mono', 'SFMono-Regular', Consolas, monospace;

  /* Layout & Spacing */
  --container-max: 1360px;
  --header-height: 80px;
  --topbar-height: 32px;
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;

  /* Transitions */
  --ease-cinematic: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 0.2s ease;
  --transition-smooth: 0.4s var(--ease-cinematic);
}

/* Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--color-offwhite);
  color: var(--color-graphite);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.65;
  background-color: var(--color-offwhite);
  color: var(--color-graphite);
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

/* Typography Hierarchy */
h1, h2, h3, h4, .font-display {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--color-graphite);
}

.text-dark h1, .text-dark h2, .text-dark h3, .dark-section h1, .dark-section h2, .dark-section h3 {
  color: var(--color-offwhite);
}

h1 { font-size: clamp(2.5rem, 5vw, 4.25rem); }
h2 { font-size: clamp(2rem, 3.8vw, 3.25rem); }
h3 { font-size: clamp(1.4rem, 2.4vw, 2rem); }
h4 { font-size: clamp(1.15rem, 1.8vw, 1.4rem); }

p {
  margin-bottom: 1.25rem;
  color: #384040;
}
p:last-child {
  margin-bottom: 0;
}

.dark-section p, .text-on-dark {
  color: var(--color-steel);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-steel-dark);
  margin-bottom: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.dark-section .eyebrow {
  color: var(--color-lime);
}

.eyebrow::before {
  content: '';
  display: inline-block;
  width: 18px;
  height: 2px;
  background-color: var(--color-lime);
}

.mono-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* Containers & Grid */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

.container-wide {
  max-width: 1540px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

.container-narrow {
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

/* Sections */
.section {
  padding-top: 6.5rem;
  padding-bottom: 6.5rem;
  position: relative;
}

.section-sm {
  padding-top: 4rem;
  padding-bottom: 4rem;
}

.section-dark {
  background-color: var(--color-graphite);
  color: var(--color-offwhite);
}

.section-white {
  background-color: var(--color-white);
}

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

.section-header.text-center {
  text-align: center;
}
.section-header.text-center .eyebrow {
  justify-content: center;
}

/* Top Announcement Strip */
.top-announcement {
  background-color: var(--color-graphite);
  color: var(--color-offwhite);
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid rgba(168, 230, 0, 0.2);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  position: relative;
  z-index: 101;
}

.top-announcement .strip-text {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.top-announcement .bullet {
  color: var(--color-lime);
}

/* Master Header & Sticky Navbar */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(247, 247, 243, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  z-index: 100;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.site-header.scrolled {
  background-color: rgba(247, 247, 243, 0.98);
  box-shadow: 0 4px 20px rgba(13, 18, 18, 0.05);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  height: 48px;
  transition: opacity var(--transition-fast);
}

.brand-logo svg {
  height: 44px;
  width: auto;
  color: var(--color-graphite);
}

.brand-logo:hover {
  opacity: 0.85;
}

/* Main Navigation */
.main-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2.2rem;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-graphite);
  padding: 0.6rem 0;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-lime);
  transition: width var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: #000000;
}

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

/* Navigation Dropdown */
.nav-item-has-dropdown {
  position: relative;
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: -20px;
  width: 290px;
  background-color: var(--color-graphite);
  border: 1px solid rgba(168, 230, 0, 0.2);
  border-radius: var(--radius-sm);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.25);
  padding: 1rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-smooth);
  z-index: 120;
}

.nav-item-has-dropdown:hover .nav-dropdown,
.nav-item-has-dropdown:focus-within .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-item {
  display: block;
  padding: 0.75rem 1.4rem;
  color: var(--color-offwhite);
  font-size: 0.88rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(168, 173, 170, 0.08);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.nav-dropdown-item:last-child {
  border-bottom: none;
}

.nav-dropdown-item .cat-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-lime);
}

.nav-dropdown-item:hover {
  background-color: rgba(168, 230, 0, 0.08);
  color: var(--color-lime);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

/* Buttons System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.85rem 1.8rem;
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  text-align: center;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn-lime {
  background-color: var(--color-lime);
  color: var(--color-graphite);
  border: 1px solid var(--color-lime);
}

.btn-lime:hover {
  background-color: var(--color-lime-hover);
  box-shadow: 0 4px 16px var(--color-lime-glow);
  transform: translateY(-1px);
}

.btn-graphite {
  background-color: var(--color-graphite);
  color: var(--color-offwhite);
  border: 1px solid var(--color-graphite);
}

.btn-graphite:hover {
  background-color: #1a2222;
  color: var(--color-lime);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-graphite);
  border: 1px solid var(--color-steel-dark);
}

.btn-outline:hover {
  border-color: var(--color-graphite);
  background-color: var(--color-graphite);
  color: var(--color-offwhite);
}

.btn-outline-light {
  background-color: transparent;
  color: var(--color-offwhite);
  border: 1px solid rgba(168, 173, 170, 0.4);
}

.btn-outline-light:hover {
  border-color: var(--color-lime);
  color: var(--color-lime);
  background-color: rgba(168, 230, 0, 0.05);
}

.btn-sm {
  padding: 0.55rem 1.2rem;
  font-size: 0.78rem;
}

.btn-lg {
  padding: 1.1rem 2.4rem;
  font-size: 0.92rem;
}

/* Mobile Nav Toggle */
.mobile-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  background-color: transparent;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  padding: 0;
  z-index: 110;
}

.mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-graphite);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.mobile-toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}
.mobile-toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Navigation Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  max-width: 420px;
  height: 100vh;
  background-color: var(--color-graphite);
  color: var(--color-offwhite);
  padding: 6rem 2.5rem 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: -10px 0 30px rgba(0,0,0,0.5);
  transition: right var(--transition-smooth);
  z-index: 105;
  overflow-y: auto;
}

.mobile-drawer.open {
  right: 0;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}

.mobile-nav-link {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-offwhite);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid rgba(168, 173, 170, 0.15);
}

.mobile-nav-link:hover, .mobile-nav-link.active {
  color: var(--color-lime);
}

.mobile-drawer-footer {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(168, 173, 170, 0.2);
  font-size: 0.85rem;
  color: var(--color-steel);
}

/* Hero Section */
.hero-section {
  position: relative;
  background-color: var(--color-graphite);
  color: var(--color-offwhite);
  min-height: calc(100vh - var(--header-height) - var(--topbar-height));
  display: flex;
  align-items: center;
  padding: 6rem 0;
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('../images/engineering-grid.svg');
  background-repeat: repeat;
  opacity: 0.35;
  pointer-events: none;
}

.hero-svg-orbit {
  position: absolute;
  top: 10%;
  right: -5%;
  width: 600px;
  height: 600px;
  opacity: 0.4;
  pointer-events: none;
  animation: slowOrbit 60s linear infinite;
}

@keyframes slowOrbit {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-content {
  max-width: 680px;
}

.hero-headline {
  font-size: clamp(2.8rem, 5.5vw, 4.6rem);
  font-weight: 500;
  color: var(--color-offwhite);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: 1.75rem;
}

.hero-headline .lime-text {
  color: var(--color-lime);
}

.hero-desc {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--color-steel);
  margin-bottom: 2.5rem;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-visual-frame {
  position: relative;
  width: 100%;
  max-width: 520px;
  background: linear-gradient(145deg, #182020, #0D1212);
  border: 1px solid rgba(168, 230, 0, 0.3);
  padding: 1.5rem;
  border-radius: var(--radius-sm);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
}

.hero-visual-frame::before {
  content: '';
  position: absolute;
  top: -6px;
  left: -6px;
  width: 24px;
  height: 24px;
  border-top: 2px solid var(--color-lime);
  border-left: 2px solid var(--color-lime);
}

.hero-visual-frame::after {
  content: '';
  position: absolute;
  bottom: -6px;
  right: -6px;
  width: 24px;
  height: 24px;
  border-bottom: 2px solid var(--color-lime);
  border-right: 2px solid var(--color-lime);
}

.hero-visual-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
}

.hero-meta-badge {
  position: absolute;
  bottom: -20px;
  left: 20px;
  background-color: var(--color-graphite);
  border: 1px solid var(--color-lime);
  padding: 0.6rem 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-lime);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  box-shadow: 0 10px 25px rgba(0,0,0,0.4);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--color-steel);
  z-index: 3;
}

.scroll-line {
  width: 1px;
  height: 32px;
  background: linear-gradient(to bottom, var(--color-lime), transparent);
  animation: scrollPulse 2s infinite ease-in-out;
}

@keyframes scrollPulse {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  50.1% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* Engineering Trust Strip */
.trust-strip {
  background-color: #121818;
  color: var(--color-offwhite);
  border-top: 1px solid rgba(168, 173, 170, 0.15);
  border-bottom: 1px solid rgba(168, 173, 170, 0.15);
  padding: 1.75rem 0;
}

.trust-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.trust-title {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  color: var(--color-lime);
  text-transform: uppercase;
}

.trust-capabilities {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  flex-wrap: wrap;
}

.trust-item {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-offwhite);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.trust-item::before {
  content: '■';
  font-size: 0.5rem;
  color: var(--color-lime);
}

/* Editorial Split Layouts */
.editorial-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.editorial-img-wrap {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: var(--color-graphite);
  border: 1px solid var(--color-border-light);
}

.editorial-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.editorial-img-wrap:hover img {
  transform: scale(1.03);
}

.editorial-meta-box {
  margin-top: 2rem;
  padding: 1.5rem;
  background-color: var(--color-white);
  border-left: 3px solid var(--color-lime);
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 15px rgba(0,0,0,0.03);
}

/* 5 Primary Products Grid */
.products-category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 2rem;
}

.category-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-smooth);
  position: relative;
}

.category-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-lime);
  box-shadow: 0 16px 36px rgba(13, 18, 18, 0.08);
}

.category-card-img-wrap {
  position: relative;
  width: 100%;
  height: 260px;
  background-color: var(--color-graphite);
  overflow: hidden;
}

.category-card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.category-card:hover .category-card-img-wrap img {
  transform: scale(1.05);
}

.category-card-number {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background-color: var(--color-graphite);
  color: var(--color-lime);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(168, 230, 0, 0.4);
}

.category-card-body {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.category-card-title {
  font-size: 1.6rem;
  margin-bottom: 0.75rem;
}

.category-card-desc {
  font-size: 0.92rem;
  color: #555E5E;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.category-card-link {
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-graphite);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: color var(--transition-fast), gap var(--transition-fast);
}

.category-card:hover .category-card-link {
  color: var(--color-lime-hover);
  gap: 0.8rem;
}

/* Product Card Component (For individual products) */
.product-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-smooth);
}

.product-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-lime);
  box-shadow: 0 12px 30px rgba(13, 18, 18, 0.07);
}

.product-card-img {
  width: 100%;
  height: 240px;
  background-color: var(--color-graphite);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.product-card:hover .product-card-img img {
  transform: scale(1.04);
}

.product-card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-card-cat {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-steel-dark);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.product-card-title {
  font-size: 1.3rem;
  margin-bottom: 0.6rem;
  color: var(--color-graphite);
}

.product-card-desc {
  font-size: 0.88rem;
  color: #555E5E;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.product-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border-light);
}

/* Capabilities Grid */
.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.capability-card {
  background-color: #151C1C;
  border: 1px solid rgba(168, 173, 170, 0.18);
  border-radius: var(--radius-sm);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-smooth);
  position: relative;
}

.capability-card:hover {
  border-color: var(--color-lime);
  background-color: #1A2222;
  transform: translateY(-4px);
}

.capability-card.defense-card {
  border-left: 3px solid var(--color-lime);
}

.capability-card-title {
  font-size: 1.5rem;
  color: var(--color-offwhite);
  margin-bottom: 0.75rem;
}

.capability-card-desc {
  font-size: 0.94rem;
  color: var(--color-steel);
  line-height: 1.7;
}

/* Industrial Text Marquee */
.industrial-marquee {
  background-color: var(--color-graphite);
  border-top: 1px solid rgba(168, 230, 0, 0.25);
  border-bottom: 1px solid rgba(168, 230, 0, 0.25);
  padding: 1.25rem 0;
  overflow: hidden;
  white-space: nowrap;
}

.marquee-inner {
  display: inline-flex;
  animation: marqueeSlide 30s linear infinite;
  gap: 3rem;
}

.marquee-item {
  font-family: var(--font-display);
  font-size: 1.4rem;
  letter-spacing: 0.08em;
  color: var(--color-offwhite);
  display: inline-flex;
  align-items: center;
  gap: 1.5rem;
}

.marquee-item .marquee-sep {
  color: var(--color-lime);
  font-size: 1rem;
}

@keyframes marqueeSlide {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
  .marquee-inner {
    animation: none;
    overflow-x: auto;
  }
}

/* Quality 5-Step Process Sequence */
.quality-sequence {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.5rem;
  position: relative;
  margin-top: 3rem;
}

.quality-step {
  position: relative;
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  padding: 2rem 1.5rem;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
}

.quality-step-num {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--color-lime-hover);
  margin-bottom: 1rem;
}

.quality-step-title {
  font-size: 1.2rem;
  margin-bottom: 0.6rem;
}

.quality-step-desc {
  font-size: 0.85rem;
  color: #555E5E;
}

/* Quote CTA Band */
.quote-cta-band {
  background-color: var(--color-graphite);
  color: var(--color-offwhite);
  position: relative;
  overflow: hidden;
  padding: 6rem 0;
  border-top: 1px solid rgba(168, 230, 0, 0.2);
}

.quote-cta-band::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 400px;
  height: 100%;
  background-image: url('../images/abstract-pipe-path.svg');
  background-repeat: no-repeat;
  background-position: right center;
  opacity: 0.2;
  pointer-events: none;
}

.quote-cta-content {
  max-width: 720px;
  position: relative;
  z-index: 2;
}

.quote-cta-headline {
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  color: var(--color-offwhite);
  margin-bottom: 1.25rem;
}

.quote-cta-desc {
  font-size: 1.1rem;
  color: var(--color-steel);
  margin-bottom: 2.25rem;
}

/* Blog Cards Grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2.5rem;
}

.blog-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-smooth);
}

.blog-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-lime);
  box-shadow: 0 16px 36px rgba(13, 18, 18, 0.08);
}

.blog-card-img {
  width: 100%;
  height: 220px;
  background-color: var(--color-graphite);
  overflow: hidden;
}

.blog-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.blog-card:hover .blog-card-img img {
  transform: scale(1.05);
}

.blog-card-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.blog-card-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-steel-dark);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.blog-card-meta .cat-badge {
  color: var(--color-graphite);
  background-color: #E9EBE8;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
}

.blog-card-title {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
  line-height: 1.25;
}

.blog-card-excerpt {
  font-size: 0.9rem;
  color: #555E5E;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

/* Product Detail Page Architecture */
.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-bottom: 5rem;
}

.product-gallery-main {
  background-color: var(--color-graphite);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 420px;
}

.product-gallery-main img {
  max-height: 380px;
  width: auto;
  object-fit: contain;
}

.product-meta-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border-light);
}

.product-specs-table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 0.92rem;
}

.product-specs-table th,
.product-specs-table td {
  padding: 0.9rem 1.2rem;
  border-bottom: 1px solid var(--color-border-light);
  text-align: left;
}

.product-specs-table th {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-steel-dark);
  text-transform: uppercase;
  width: 38%;
  background-color: #F0F2EF;
}

.product-specs-table td {
  color: var(--color-graphite);
  font-weight: 500;
}

/* Breadcrumbs */
.breadcrumbs {
  padding: 1.25rem 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-steel-dark);
}

.breadcrumbs ol {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.breadcrumbs li::after {
  content: '/';
  margin-left: 0.6rem;
  color: var(--color-steel);
}

.breadcrumbs li:last-child::after {
  content: '';
}

.breadcrumbs a {
  color: var(--color-graphite);
}
.breadcrumbs a:hover {
  color: var(--color-lime-hover);
}

/* Forms System (Contact & Quote) */
.form-group {
  margin-bottom: 1.6rem;
}

.form-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-graphite);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-label .required {
  color: #D9381E;
}

.form-control {
  width: 100%;
  padding: 0.85rem 1.1rem;
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  color: var(--color-graphite);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-lime);
  box-shadow: 0 0 0 3px var(--color-lime-glow);
}

textarea.form-control {
  min-height: 130px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.file-upload-box {
  border: 2px dashed var(--color-border-light);
  padding: 1.5rem;
  text-align: center;
  border-radius: var(--radius-sm);
  background-color: var(--color-white);
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.file-upload-box:hover {
  border-color: var(--color-lime);
}

/* Master Footer */
.site-footer {
  background-color: var(--color-graphite);
  color: var(--color-offwhite);
  padding-top: 5.5rem;
  padding-bottom: 2.5rem;
  border-top: 1px solid rgba(168, 230, 0, 0.2);
  position: relative;
  overflow: hidden;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 3.5rem;
  margin-bottom: 4.5rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.footer-logo svg {
  height: 44px;
  width: auto;
  color: var(--color-offwhite);
}

.footer-desc {
  font-size: 0.88rem;
  color: var(--color-steel);
  line-height: 1.7;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-lime);
  margin-bottom: 1.4rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link {
  color: var(--color-steel);
  font-size: 0.88rem;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-lime);
  transform: translateX(3px);
}

.footer-contact-item {
  margin-bottom: 1rem;
  font-size: 0.88rem;
  color: var(--color-steel);
}

.footer-contact-item strong {
  color: var(--color-offwhite);
  display: block;
  font-size: 0.82rem;
  font-family: var(--font-mono);
  margin-bottom: 0.2rem;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(168, 173, 170, 0.15);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-size: 0.8rem;
  color: var(--color-steel-dark);
}

/* Toast Alerts Component */
.toast-alert {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  min-width: 320px;
  max-width: 440px;
  background-color: var(--color-graphite);
  color: var(--color-offwhite);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  padding: 1rem 1.4rem;
  box-shadow: 0 16px 40px rgba(0,0,0,0.3);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  z-index: 1000;
  animation: toastSlideUp 0.3s var(--ease-cinematic);
}

@keyframes toastSlideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.toast-success { border-left: 4px solid var(--color-lime); }
.toast-error { border-left: 4px solid #E63946; }
.toast-warning { border-left: 4px solid #F4A261; }
.toast-info { border-left: 4px solid #457B9D; }

.toast-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--color-lime);
}

.toast-message {
  font-size: 0.88rem;
  color: var(--color-offwhite);
  margin: 0;
}

.toast-close {
  color: var(--color-steel);
  font-size: 1.25rem;
  line-height: 1;
}
.toast-close:hover {
  color: var(--color-white);
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .hero-visual {
    order: -1;
  }
  .editorial-split {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .product-detail-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .quality-sequence {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }
  .main-nav {
    display: none;
  }
  .mobile-toggle {
    display: flex;
  }
}

@media (max-width: 640px) {
  .section {
    padding-top: 4.5rem;
    padding-bottom: 4.5rem;
  }
  .container, .container-wide, .container-narrow {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .products-category-grid {
    grid-template-columns: 1fr;
  }
  .quality-sequence {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .top-announcement {
    display: none;
  }
}