/* ============================================================
   AXSCIN ANALYTICS — Design System & Styles
   Premium scientific B2B laboratory technology aesthetic
   ============================================================ */

/* ---------- Google Font ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Primary palette — deep scientific blue */
  --blue-900: #0a1628;
  --blue-800: #0f2140;
  --blue-700: #142d58;
  --blue-600: #1a3a6e;
  --blue-500: #1e4d8c;
  --blue-400: #2563a8;
  --blue-300: #3b82c4;
  --blue-200: #6aa5db;
  --blue-100: #a8cdef;
  --blue-50:  #e0eefb;

  /* Accent — cyan / teal */
  --cyan-600: #0891a2;
  --cyan-500: #06b6c8;
  --cyan-400: #22d3e6;
  --cyan-300: #67e8f4;
  --cyan-200: #a5f3fc;
  --cyan-100: #cffafe;

  /* Neutrals */
  --gray-950: #0b0f19;
  --gray-900: #111827;
  --gray-800: #1f2937;
  --gray-700: #374151;
  --gray-600: #4b5563;
  --gray-500: #6b7280;
  --gray-400: #9ca3af;
  --gray-300: #d1d5db;
  --gray-200: #e5e7eb;
  --gray-100: #f3f4f6;
  --gray-50:  #f9fafb;
  --white:    #ffffff;

  /* Semantic */
  --success:  #10b981;
  --warning:  #f59e0b;
  --error:    #ef4444;

  /* Gradients */
  --gradient-hero: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-700) 40%, var(--blue-600) 70%, #0e3d5e 100%);
  --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.06) 0%, rgba(255,255,255,0.02) 100%);
  --gradient-cta:  linear-gradient(135deg, var(--cyan-500) 0%, var(--cyan-600) 100%);
  --gradient-cta-hover: linear-gradient(135deg, var(--cyan-400) 0%, var(--cyan-500) 100%);
  --gradient-blue-btn: linear-gradient(135deg, var(--blue-500) 0%, var(--blue-600) 100%);
  --gradient-section: linear-gradient(180deg, var(--gray-50) 0%, var(--white) 100%);
  --gradient-dark-section: linear-gradient(180deg, var(--blue-900) 0%, var(--blue-800) 100%);

  /* Glass */
  --glass-bg:     rgba(255, 255, 255, 0.07);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-xs:   0.75rem;
  --font-sm:   0.875rem;
  --font-base: 1rem;
  --font-md:   1.125rem;
  --font-lg:   1.25rem;
  --font-xl:   1.5rem;
  --font-2xl:  1.875rem;
  --font-3xl:  2.25rem;
  --font-4xl:  3rem;
  --font-5xl:  3.75rem;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --max-width: 1280px;
  --header-height: 72px;

  /* Borders & Radii */
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 2px rgba(0,0,0,0.05);
  --shadow-md:  0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg:  0 10px 30px rgba(0,0,0,0.1);
  --shadow-xl:  0 20px 50px rgba(0,0,0,0.15);
  --shadow-card: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-card-hover: 0 12px 40px rgba(0,0,0,0.12);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-fast: 200ms var(--ease-out);
  --transition-base: 350ms var(--ease-out);
  --transition-slow: 500ms var(--ease-out);
}

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

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

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

body {
  font-family: var(--font-family);
  font-size: var(--font-base);
  line-height: 1.7;
  color: var(--gray-700);
  background: var(--white);
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol { list-style: none; }

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ---------- Focus States ---------- */
:focus-visible {
  outline: 2px solid var(--cyan-500);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

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

/* ---------- Section Utility ---------- */
.section {
  padding: var(--space-20) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--cyan-600);
  margin-bottom: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: rgba(6, 182, 200, 0.08);
  border-radius: var(--radius-full);
}

.section-label svg {
  width: 14px;
  height: 14px;
}

.section-title {
  font-size: var(--font-3xl);
  font-weight: 800;
  color: var(--blue-900);
  line-height: 1.2;
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--font-md);
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* Dark section variants */
.section--dark {
  background: var(--gradient-dark-section);
  color: var(--gray-200);
}

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

.section--dark .section-subtitle {
  color: var(--gray-400);
}

.section--dark .section-label {
  background: rgba(6, 182, 200, 0.15);
  color: var(--cyan-300);
}

.section--alt {
  background: var(--gradient-section);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.15);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::after {
  opacity: 1;
}

.btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.btn--primary {
  background: var(--gradient-cta);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(6, 182, 200, 0.35);
}

.btn--primary:hover {
  box-shadow: 0 6px 20px rgba(6, 182, 200, 0.5);
  transform: translateY(-1px);
}

.btn--secondary {
  background: var(--gradient-blue-btn);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(30, 77, 140, 0.3);
}

.btn--secondary:hover {
  box-shadow: 0 6px 20px rgba(30, 77, 140, 0.45);
  transform: translateY(-1px);
}

.btn--outline {
  border: 1.5px solid var(--gray-300);
  color: var(--gray-700);
  background: var(--white);
}

.btn--outline:hover {
  border-color: var(--cyan-500);
  color: var(--cyan-600);
  background: rgba(6, 182, 200, 0.04);
}

.btn--ghost {
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.3);
}

.btn--ghost:hover {
  border-color: rgba(255,255,255,0.6);
  background: rgba(255,255,255,0.08);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-base);
  border-radius: var(--radius-lg);
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-xs);
}

.btn--icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* ============================================================
   1. HEADER
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  transition: all var(--transition-base);
  background: transparent;
}

.header--scrolled {
  background: rgba(10, 22, 40, 0.92);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06), 0 4px 20px rgba(0,0,0,0.25);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  z-index: 1001;
}

.header__logo img {
  height: 42px;
  width: auto;
  border-radius: var(--radius-sm);
}

.header__logo-text {
  font-size: var(--font-lg);
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
}

.header__logo-text span {
  color: var(--cyan-400);
}

/* Navigation */
.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.header__nav-link {
  position: relative;
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-sm);
  font-weight: 500;
  color: rgba(255,255,255,0.75);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.header__nav-link:hover,
.header__nav-link--active {
  color: var(--white);
  background: rgba(255,255,255,0.08);
}

.header__nav-link--active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--cyan-400);
  border-radius: var(--radius-full);
}

.header__cta {
  margin-left: var(--space-4);
}

/* Hamburger */
.header__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  z-index: 1001;
  cursor: pointer;
  background: none;
  border: none;
}

.header__hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition-fast);
  transform-origin: center;
}

.header__hamburger--open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.header__hamburger--open span:nth-child(2) {
  opacity: 0;
}

.header__hamburger--open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 22, 40, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 999;
  padding-top: calc(var(--header-height) + var(--space-8));
  opacity: 0;
  transform: translateY(-10px);
  transition: all var(--transition-base);
}

.mobile-menu--open {
  display: flex;
  flex-direction: column;
  align-items: center;
  opacity: 1;
  transform: translateY(0);
}

.mobile-menu__link {
  display: block;
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-xl);
  font-weight: 600;
  color: rgba(255,255,255,0.8);
  transition: all var(--transition-fast);
  text-align: center;
}

.mobile-menu__link:hover {
  color: var(--cyan-400);
}

.mobile-menu__cta {
  margin-top: var(--space-8);
}

/* ============================================================
   2. HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  overflow: hidden;
}

/* Subtle grid pattern */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

/* Radial glow */
.hero::after {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60%;
  height: 80%;
  background: radial-gradient(ellipse, rgba(6, 182, 200, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  padding-top: var(--header-height);
}

.hero__content {
  padding: var(--space-16) 0;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(6, 182, 200, 0.12);
  border: 1px solid rgba(6, 182, 200, 0.25);
  border-radius: var(--radius-full);
  font-size: var(--font-xs);
  font-weight: 600;
  color: var(--cyan-300);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-6);
}

.hero__badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--cyan-400);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.5; transform: scale(1.4); }
}

.hero__title {
  font-size: clamp(var(--font-3xl), 5vw, var(--font-5xl));
  font-weight: 900;
  color: var(--white);
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
}

.hero__title span {
  background: linear-gradient(135deg, var(--cyan-400), var(--cyan-300));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__description {
  font-size: var(--font-md);
  color: rgba(255,255,255,0.65);
  line-height: 1.8;
  max-width: 520px;
  margin-bottom: var(--space-10);
}

.hero__actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero__stats {
  display: flex;
  gap: var(--space-10);
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255,255,255,0.08);
}

.hero__stat-value {
  font-size: var(--font-2xl);
  font-weight: 800;
  color: var(--white);
}

.hero__stat-label {
  font-size: var(--font-xs);
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: var(--space-1);
}

/* Hero visual */
.hero__visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__image-wrapper {
  position: relative;
  width: 100%;
  max-width: 500px;
}

.hero__image-wrapper::before {
  content: '';
  position: absolute;
  inset: -20px;
  background: linear-gradient(135deg, rgba(6, 182, 200, 0.15), rgba(30, 77, 140, 0.1));
  border-radius: var(--radius-xl);
  filter: blur(40px);
  z-index: 0;
}

.hero__image {
  position: relative;
  z-index: 1;
  width: 100%;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: var(--shadow-xl);
  object-fit: cover;
}

/* Floating cards on hero */
.hero__float-card {
  position: absolute;
  z-index: 2;
  background: rgba(255,255,255,0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.85);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  animation: float 6s ease-in-out infinite;
  box-shadow: 0 4px 20px rgba(0,0,0,0.10), 0 1px 4px rgba(0,0,0,0.06);
}

.hero__float-card--1 {
  top: 10%;
  right: -10%;
  animation-delay: -1s;
}

.hero__float-card--2 {
  bottom: 15%;
  left: -8%;
  animation-delay: -3s;
}

.hero__float-card__icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-cta);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-2);
}

.hero__float-card__icon svg {
  width: 18px;
  height: 18px;
  color: var(--white);
}

.hero__float-card__title {
  font-size: var(--font-xs);
  font-weight: 700;
  color: #0B2A4A;
}

.hero__float-card__desc {
  font-size: 11px;
  color: #35536F;
  margin-top: 2px;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  33%      { transform: translateY(-8px) rotate(0.5deg); }
  66%      { transform: translateY(4px) rotate(-0.3deg); }
}

/* ============================================================
   3. PRODUCT CATEGORIES
   ============================================================ */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: var(--space-6);
}

.category-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  transition: all var(--transition-base);
  cursor: pointer;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-cta);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: transparent;
}

.category-card:hover::before {
  transform: scaleX(1);
}

.category-card__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-4);
  background: linear-gradient(135deg, var(--blue-50), rgba(6, 182, 200, 0.08));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.category-card:hover .category-card__icon {
  background: var(--gradient-cta);
}

.category-card__icon svg {
  width: 24px;
  height: 24px;
  color: var(--blue-500);
  transition: color var(--transition-fast);
}

.category-card:hover .category-card__icon svg {
  color: var(--white);
}

.category-card__title {
  font-size: var(--font-sm);
  font-weight: 700;
  color: var(--blue-900);
  margin-bottom: var(--space-2);
}

.category-card__count {
  font-size: var(--font-xs);
  color: var(--gray-500);
}

/* ============================================================
   4. FEATURED PRODUCTS / PRODUCT EXPLORER
   ============================================================ */
.product-controls {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-10);
  align-items: center;
  justify-content: space-between;
}

.product-search {
  position: relative;
  flex: 1;
  min-width: 250px;
  max-width: 400px;
}

.product-search__input {
  width: 100%;
  padding: var(--space-3) var(--space-4) var(--space-3) 44px;
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-size: var(--font-sm);
  color: var(--gray-800);
  transition: all var(--transition-fast);
}

.product-search__input:focus {
  outline: none;
  border-color: var(--cyan-500);
  box-shadow: 0 0 0 3px rgba(6, 182, 200, 0.12);
}

.product-search__icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--gray-400);
  pointer-events: none;
}

.product-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.filter-btn {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-xs);
  font-weight: 600;
  color: var(--gray-600);
  background: var(--gray-100);
  border: 1.5px solid transparent;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.filter-btn:hover {
  color: var(--cyan-600);
  background: var(--cyan-100);
}

.filter-btn--active {
  color: var(--white);
  background: var(--gradient-cta);
  border-color: transparent;
}

/* Product Grid */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: var(--space-6);
}

.product-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  cursor: pointer;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: transparent;
}

.product-card__image {
  position: relative;
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: #F7FAFC;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-card__image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  padding: var(--space-4);
  transition: transform var(--transition-slow);
}

.product-card:hover .product-card__image img {
  transform: scale(1.06);
}

.product-card__badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  padding: var(--space-1) var(--space-3);
  background: var(--gradient-cta);
  color: var(--white);
  font-size: 11px;
  font-weight: 700;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.product-card__body {
  padding: var(--space-5);
}

.product-card__category {
  font-size: var(--font-xs);
  font-weight: 600;
  color: var(--cyan-600);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-2);
}

.product-card__title {
  font-size: var(--font-base);
  font-weight: 700;
  color: var(--blue-900);
  line-height: 1.4;
  margin-bottom: var(--space-2);
}

.product-card__desc {
  font-size: var(--font-sm);
  color: var(--gray-500);
  line-height: 1.6;
  margin-bottom: var(--space-4);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card__specs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.product-card__spec {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  background: var(--gray-50);
  border-radius: var(--radius-full);
  font-size: 11px;
  color: var(--gray-600);
  font-weight: 500;
}

.product-card__spec svg {
  width: 12px;
  height: 12px;
  color: var(--cyan-600);
}

.product-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  border-top: 1px solid var(--gray-100);
}

.product-card__link {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--blue-500);
  display: flex;
  align-items: center;
  gap: var(--space-1);
  transition: all var(--transition-fast);
}

.product-card__link svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast);
}

.product-card__link:hover {
  color: var(--cyan-600);
}

.product-card__link:hover svg {
  transform: translateX(3px);
}

.product-card__quote {
  font-size: var(--font-xs);
  font-weight: 600;
  color: var(--cyan-600);
  padding: var(--space-2) var(--space-3);
  border: 1.5px solid var(--cyan-500);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.product-card__quote:hover {
  background: var(--cyan-500);
  color: var(--white);
}

/* No results */
.no-results {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-16) var(--space-8);
  color: var(--gray-500);
}

.no-results svg {
  width: 48px;
  height: 48px;
  color: var(--gray-300);
  margin: 0 auto var(--space-4);
}

/* ============================================================
   5. PRODUCT MODAL — Two-column layout
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 22, 40, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.modal-overlay--open {
  opacity: 1;
  visibility: visible;
}

.modal {
  position: relative;
  background: var(--white);
  border-radius: var(--radius-xl);
  max-width: 1040px;
  width: 100%;
  max-height: 92vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  transform: translateY(20px) scale(0.97);
  transition: transform var(--transition-base);
}

.modal-overlay--open .modal {
  transform: translateY(0) scale(1);
}

.modal__close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-100);
  border-radius: var(--radius-full);
  color: var(--gray-600);
  transition: all var(--transition-fast);
  z-index: 10;
}

.modal__close:hover {
  background: var(--gray-200);
  color: var(--gray-900);
}

.modal__close svg {
  width: 20px;
  height: 20px;
}

/* Two-column grid layout */
.modal__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  min-height: 0;
}

/* Left column — product image */
.modal__image-col {
  position: relative;
  background: #F7FAFC;
  border-radius: var(--radius-xl) 0 0 var(--radius-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  min-height: 400px;
}

.modal__image {
  width: 100%;
  max-height: 380px;
  object-fit: contain;
  object-position: center;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform var(--transition-base);
}

.modal__image:hover {
  transform: scale(1.03);
}

.modal__brochure-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-6);
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-xs);
  font-weight: 600;
  color: var(--blue-500);
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.modal__brochure-link:hover {
  color: var(--cyan-600);
  border-color: var(--cyan-500);
  background: rgba(6, 182, 200, 0.04);
}

.modal__brochure-link svg {
  width: 14px;
  height: 14px;
}

/* Right column — product info */
.modal__body {
  padding: var(--space-8);
  overflow-y: auto;
  max-height: 92vh;
}

.modal__category {
  font-size: var(--font-xs);
  font-weight: 700;
  color: var(--cyan-600);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-2);
}

.modal__title {
  font-size: var(--font-2xl);
  font-weight: 800;
  color: var(--blue-900);
  margin-bottom: var(--space-4);
  line-height: 1.25;
}

.modal__desc {
  font-size: var(--font-sm);
  color: var(--gray-600);
  line-height: 1.8;
  margin-bottom: var(--space-6);
}

.modal__section-title {
  font-size: var(--font-xs);
  font-weight: 700;
  color: var(--blue-900);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 2px solid var(--cyan-400);
  display: inline-block;
}

.modal__specs {
  margin-bottom: var(--space-6);
}

.modal__spec-table {
  width: 100%;
  border-collapse: collapse;
}

.modal__spec-table tr:nth-child(even) {
  background: var(--gray-50);
}

.modal__spec-table td {
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-sm);
  border-bottom: 1px solid var(--gray-100);
}

.modal__spec-table td:first-child {
  font-weight: 600;
  color: var(--blue-900);
  width: 42%;
}

.modal__spec-table td:last-child {
  color: var(--gray-600);
}

.modal__features {
  margin-bottom: var(--space-6);
}

.modal__feature-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1);
}

.modal__feature-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--font-sm);
  color: var(--gray-600);
  padding: var(--space-1) 0;
  line-height: 1.5;
}

.modal__feature-item svg {
  width: 15px;
  height: 15px;
  color: var(--success);
  flex-shrink: 0;
  margin-top: 3px;
}

.modal__applications {
  margin-bottom: var(--space-6);
}

.modal__app-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.modal__app-tag {
  padding: var(--space-1) var(--space-3);
  background: var(--blue-50);
  color: var(--blue-600);
  font-size: var(--font-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
}

.modal__actions {
  display: flex;
  gap: var(--space-3);
  padding-top: var(--space-5);
  border-top: 1px solid var(--gray-200);
  flex-wrap: wrap;
}

/* ============================================================
   6. SYRINGE FILTER TABS
   ============================================================ */
.syringe-section {
  background: var(--gradient-dark-section);
  position: relative;
  overflow: hidden;
}

.syringe-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.syringe-tabs {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  margin-bottom: var(--space-12);
  flex-wrap: wrap;
}

.syringe-tab {
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-sm);
  font-weight: 600;
  color: rgba(255,255,255,0.6);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.syringe-tab:hover {
  color: var(--white);
  background: rgba(255,255,255,0.1);
}

.syringe-tab--active {
  color: var(--white);
  background: var(--gradient-cta);
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(6, 182, 200, 0.35);
}

.syringe-content {
  display: none;
  position: relative;
  z-index: 1;
}

.syringe-content--active {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
  animation: fadeIn 0.4s var(--ease-out);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.syringe-content__image {
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: var(--shadow-xl);
  max-height: 450px;
  object-fit: contain;
  background: rgba(255,255,255,0.04);
  padding: var(--space-4);
}

.syringe-content__info h3 {
  font-size: var(--font-2xl);
  font-weight: 800;
  color: var(--white);
  margin-bottom: var(--space-4);
}

.syringe-content__info p {
  color: rgba(255,255,255,0.65);
  line-height: 1.8;
  margin-bottom: var(--space-6);
}

.syringe-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.syringe-feature {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  font-size: var(--font-sm);
  color: rgba(255,255,255,0.8);
}

.syringe-feature svg {
  width: 16px;
  height: 16px;
  color: var(--cyan-400);
  flex-shrink: 0;
}

.syringe-apps {
  margin-bottom: var(--space-6);
}

.syringe-apps__title {
  font-size: var(--font-xs);
  font-weight: 700;
  color: var(--cyan-400);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}

.syringe-apps__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.syringe-apps__tag {
  padding: var(--space-1) var(--space-3);
  background: rgba(6, 182, 200, 0.12);
  border: 1px solid rgba(6, 182, 200, 0.2);
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 600;
  color: var(--cyan-300);
}

/* ============================================================
   7. HPLC / UHPLC TECHNICAL SECTION
   ============================================================ */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-6);
}

.tech-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.tech-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: transparent;
}

.tech-card__image {
  width: 100%;
  height: 220px;
  object-fit: contain;
  background: #F7FAFC;
  padding: var(--space-4);
}

.tech-card__body {
  padding: var(--space-6);
}

.tech-card__title {
  font-size: var(--font-lg);
  font-weight: 700;
  color: var(--blue-900);
  margin-bottom: var(--space-3);
}

.tech-card__desc {
  font-size: var(--font-sm);
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}

.tech-card__specs {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.tech-card__spec {
  display: flex;
  justify-content: space-between;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--gray-100);
  font-size: var(--font-sm);
}

.tech-card__spec-label {
  color: var(--gray-500);
}

.tech-card__spec-value {
  font-weight: 600;
  color: var(--blue-900);
}

/* ============================================================
   8. LABORATORY INSTRUMENTATION
   ============================================================ */
.instrument-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--gray-100);
}

.instrument-card:last-child {
  border-bottom: none;
}

.instrument-card:nth-child(even) {
  direction: rtl;
}

.instrument-card:nth-child(even) > * {
  direction: ltr;
}

.instrument-card__image {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  width: 100%;
  object-fit: contain;
  background: var(--gray-50);
  padding: var(--space-4);
}

.instrument-card__content h3 {
  font-size: var(--font-2xl);
  font-weight: 800;
  color: var(--blue-900);
  margin-bottom: var(--space-4);
}

.instrument-card__content p {
  font-size: var(--font-base);
  color: var(--gray-500);
  line-height: 1.8;
  margin-bottom: var(--space-6);
}

.instrument-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.instrument-spec {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--font-sm);
  color: var(--gray-600);
}

.instrument-spec svg {
  width: 16px;
  height: 16px;
  color: var(--cyan-500);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ============================================================
   9. APPLICATIONS / INDUSTRIES
   ============================================================ */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-5);
}

.industry-card {
  position: relative;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
  transition: all var(--transition-base);
  cursor: default;
}

.industry-card:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(6, 182, 200, 0.3);
  transform: translateY(-3px);
}

.industry-card__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-3);
  background: rgba(6, 182, 200, 0.12);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.industry-card__icon svg {
  width: 22px;
  height: 22px;
  color: var(--cyan-400);
}

.industry-card__title {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--white);
}

/* ============================================================
   10. ABOUT
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.about__content h3 {
  font-size: var(--font-2xl);
  font-weight: 800;
  color: var(--blue-900);
  margin-bottom: var(--space-6);
  line-height: 1.3;
}

.about__content p {
  font-size: var(--font-base);
  color: var(--gray-600);
  line-height: 1.8;
  margin-bottom: var(--space-4);
}

.about__values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.about__value {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--gray-50);
  border-radius: var(--radius-md);
}

.about__value-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-cta);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.about__value-icon svg {
  width: 18px;
  height: 18px;
  color: var(--white);
}

.about__value-title {
  font-size: var(--font-sm);
  font-weight: 700;
  color: var(--blue-900);
  margin-bottom: 2px;
}

.about__value-desc {
  font-size: var(--font-xs);
  color: var(--gray-500);
}

.about__image-stack {
  position: relative;
}

.about__image-main {
  width: 100%;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

/* ============================================================
   11. CONTACT / QUOTE FORM
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: var(--space-12);
}

.contact-info {
  padding: var(--space-8);
  background: var(--gradient-dark-section);
  border-radius: var(--radius-xl);
  color: var(--white);
}

.contact-info h3 {
  font-size: var(--font-2xl);
  font-weight: 800;
  margin-bottom: var(--space-2);
}

.contact-info > p {
  font-size: var(--font-sm);
  color: rgba(255,255,255,0.6);
  margin-bottom: var(--space-8);
}

.contact-item {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.contact-item__icon {
  width: 44px;
  height: 44px;
  background: rgba(6, 182, 200, 0.12);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-item__icon svg {
  width: 20px;
  height: 20px;
  color: var(--cyan-400);
}

.contact-item__label {
  font-size: var(--font-xs);
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 2px;
}

.contact-item__value {
  font-size: var(--font-sm);
  color: var(--white);
  font-weight: 500;
}

.contact-item__value a {
  color: var(--cyan-300);
  transition: color var(--transition-fast);
}

.contact-item__value a:hover {
  color: var(--cyan-400);
}

/* Quote Form */
.quote-form {
  padding: var(--space-8);
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.quote-form h3 {
  font-size: var(--font-xl);
  font-weight: 800;
  color: var(--blue-900);
  margin-bottom: var(--space-2);
}

.quote-form > p {
  font-size: var(--font-sm);
  color: var(--gray-500);
  margin-bottom: var(--space-8);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-group label {
  display: block;
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: var(--space-2);
}

.form-group label .required {
  color: var(--error);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-size: var(--font-sm);
  color: var(--gray-800);
  background: var(--white);
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--cyan-500);
  box-shadow: 0 0 0 3px rgba(6, 182, 200, 0.12);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-group .error-message {
  display: none;
  font-size: var(--font-xs);
  color: var(--error);
  margin-top: var(--space-1);
}

.form-group--error input,
.form-group--error select,
.form-group--error textarea {
  border-color: var(--error);
}

.form-group--error .error-message {
  display: block;
}

.form-success {
  display: none;
  text-align: center;
  padding: var(--space-12);
}

.form-success--show {
  display: block;
}

.form-success svg {
  width: 56px;
  height: 56px;
  color: var(--success);
  margin: 0 auto var(--space-4);
}

.form-success h4 {
  font-size: var(--font-xl);
  font-weight: 700;
  color: var(--blue-900);
  margin-bottom: var(--space-2);
}

.form-success p {
  color: var(--gray-500);
}

/* ============================================================
   12. FOOTER
   ============================================================ */
.footer {
  background: var(--blue-900);
  padding: var(--space-16) 0 0;
  color: rgba(255,255,255,0.6);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

.footer__brand p {
  font-size: var(--font-sm);
  line-height: 1.7;
  margin-top: var(--space-4);
  max-width: 300px;
}

.footer__brand .header__logo {
  margin-bottom: var(--space-2);
}

.footer__title {
  font-size: var(--font-sm);
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-5);
}

.footer__links li {
  margin-bottom: var(--space-3);
}

.footer__links a {
  font-size: var(--font-sm);
  transition: color var(--transition-fast);
}

.footer__links a:hover {
  color: var(--cyan-400);
}

.footer__bar {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: var(--space-6) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__copyright {
  font-size: var(--font-xs);
}

.footer__bar-links {
  display: flex;
  gap: var(--space-6);
}

.footer__bar-links a {
  font-size: var(--font-xs);
  transition: color var(--transition-fast);
}

.footer__bar-links a:hover {
  color: var(--cyan-400);
}

/* ============================================================
   LIGHTBOX
   ============================================================ */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  cursor: zoom-out;
}

.lightbox--open {
  opacity: 1;
  visibility: visible;
}

.lightbox img {
  max-width: 90%;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
}

.lightbox__close {
  position: absolute;
  top: var(--space-6);
  right: var(--space-6);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.15);
  border-radius: var(--radius-full);
  color: var(--white);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.lightbox__close:hover {
  background: rgba(255,255,255,0.25);
}

.lightbox__close svg {
  width: 24px;
  height: 24px;
}

/* ============================================================
   BACK TO TOP
   ============================================================ */
.back-to-top {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  width: 48px;
  height: 48px;
  background: var(--gradient-cta);
  color: var(--white);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(6, 182, 200, 0.35);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-base);
  z-index: 900;
  cursor: pointer;
}

.back-to-top--visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(6, 182, 200, 0.5);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   RESPONSIVE — TABLET
   ============================================================ */
@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__description {
    margin: 0 auto var(--space-10);
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__stats {
    justify-content: center;
  }

  .hero__visual {
    max-width: 420px;
    margin: 0 auto;
  }

  .hero__float-card {
    display: none;
  }

  .syringe-content--active {
    grid-template-columns: 1fr;
  }

  .instrument-card {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .instrument-card:nth-child(even) {
    direction: ltr;
  }

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

  .about__image-stack {
    order: -1;
    max-width: 500px;
    margin: 0 auto;
  }

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

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

  .modal__image-col {
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    min-height: 280px;
    padding: var(--space-6);
  }

  .modal__image {
    max-height: 260px;
  }

  .modal__body {
    max-height: none;
  }

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

/* ============================================================
   RESPONSIVE — MOBILE
   ============================================================ */
@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .section {
    padding: var(--space-16) 0;
  }

  .section-title {
    font-size: var(--font-2xl);
  }

  .header__nav,
  .header__cta {
    display: none;
  }

  .header__hamburger {
    display: flex;
  }

  .categories-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--space-4);
  }

  .category-card {
    padding: var(--space-5) var(--space-4);
  }

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

  .product-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .product-search {
    max-width: 100%;
  }

  .product-filters {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: var(--space-2);
    -webkit-overflow-scrolling: touch;
  }

  .filter-btn {
    flex-shrink: 0;
  }

  .modal {
    margin: var(--space-2);
    border-radius: var(--radius-lg);
    max-height: 95vh;
  }

  .modal__image-col {
    min-height: 200px;
    padding: var(--space-4);
  }

  .modal__image {
    max-height: 200px;
  }

  .modal__body {
    padding: var(--space-5);
  }

  .modal__title {
    font-size: var(--font-xl);
  }

  .modal__actions {
    flex-direction: column;
  }

  .product-card__image {
    height: 170px;
  }

  .syringe-tabs {
    overflow-x: auto;
    justify-content: flex-start;
    flex-wrap: nowrap;
    padding-bottom: var(--space-2);
    -webkit-overflow-scrolling: touch;
  }

  .syringe-tab {
    flex-shrink: 0;
  }

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

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

  .industries-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--space-3);
  }

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

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

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer__bar {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero__title {
    font-size: var(--font-2xl);
  }

  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .hero__stats {
    flex-direction: column;
    align-items: center;
    gap: var(--space-6);
  }

  .back-to-top {
    bottom: var(--space-4);
    right: var(--space-4);
    width: 42px;
    height: 42px;
  }
}