/* ============================================
   Charlotte Essence — Vanilla Bean Website
   Design System & Styles
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400;1,500;1,600&family=Poppins:wght@300;400;500;600;700&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Colors */
  --cream: #FAFAFA;
  --ivory: #F5F5F5;
  --accent: #297e22;
  --accent-light: #04ff6d;
  --accent-dark: #077DAE;
  --brown-dark: #79380d;
  --brown-medium: #8B5A2B;
  --brown-light: #A0764D;
  --brown-subtle: #D4C4B0;
  --white: #FFFFFF;
  --black: #1A1A1A;
  --overlay-dark: rgba(121, 56, 13, 0.75);
  --overlay-medium: rgba(121, 56, 13, 0.5);
  --overlay-light: rgba(121, 56, 13, 0.2);

  /* Typography */
  --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing Scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Typography Scale */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --text-7xl: 4.5rem;

  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 900px;
  --border-radius: 6px;
  --border-radius-lg: 10px;
  --border-radius-xl: 14px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  --transition-slower: 0.8s ease;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 8px 30px rgba(0, 0, 0, 0.12);
}

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

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

body {
  font-family: var(--font-body);
  color: var(--brown-dark);
  background-color: var(--cream);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

ul,
ol {
  list-style: none;
}

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

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

/* --- Typography --- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  color: var(--brown-dark);
  font-weight: 600;
}

h1 {
  font-size: var(--text-6xl);
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--text-4xl);
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--text-2xl);
}

h4 {
  font-size: var(--text-xl);
}

h5 {
  font-size: var(--text-lg);
}

p {
  margin-bottom: var(--space-md);
  color: var(--brown-medium);
  font-weight: 400;
}

.text-accent {
  color: var(--accent);
}

.text-center {
  text-align: center;
}

.text-italic {
  font-style: italic;
}

/* --- Section Label --- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: var(--space-lg);
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 30px;
  height: 1px;
  background: var(--accent);
}

.section-title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-lg);
  position: relative;
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--brown-light);
  max-width: 650px;
  line-height: 1.8;
}

.section-subtitle.centered {
  margin-left: auto;
  margin-right: auto;
}

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

.container--narrow {
  max-width: var(--max-width-narrow);
}

/* --- Section --- */
.section {
  padding: var(--space-5xl) 0;
  position: relative;
}

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

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

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

.section--dark {
  background-color: var(--brown-dark);
  color: var(--cream);
}

.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--cream);
}

.section--dark p {
  color: var(--brown-subtle);
}

.section--dark .section-label {
  color: var(--accent-light);
}

.section--dark .section-label::before {
  background: var(--accent-light);
}

/* --- Divider --- */
.divider {
  width: 60px;
  height: 2px;
  background: var(--accent);
  margin: var(--space-lg) 0;
  border: none;
}

.divider--center {
  margin-left: auto;
  margin-right: auto;
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-lg) 0;
  transition: all var(--transition-base);
}

.navbar.scrolled {
  background: var(--white);
  padding: var(--space-md) 0;
  box-shadow: var(--shadow-md);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.navbar__logo img {
  height: 40px;
  width: auto;
}

.navbar__logo-text {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--white);
  transition: color var(--transition-base);
}

.navbar.scrolled .navbar__logo-text {
  color: var(--brown-dark);
}

.navbar__menu {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
}

.navbar__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  position: relative;
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}

.navbar.scrolled .navbar__link {
  color: var(--brown-medium);
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition-base);
}

.navbar__link:hover::after,
.navbar__link.active::after {
  width: 100%;
}

.navbar__link:hover {
  color: var(--accent);
}

.navbar.scrolled .navbar__link:hover,
.navbar.scrolled .navbar__link.active {
  color: var(--accent);
}

.navbar__cta {
  padding: 10px 24px;
  background: var(--accent);
  color: var(--white);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--border-radius);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: all var(--transition-base);
}

.navbar__cta:hover {
  background: var(--accent-dark);
}

/* Hamburger */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: var(--space-sm);
  cursor: pointer;
}

.navbar__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: all var(--transition-base);
}

.navbar.scrolled .navbar__hamburger span {
  background: var(--brown-dark);
}

.navbar__hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.navbar__hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

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

.hero__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transition: transform 0.1s linear;
}

.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(121, 56, 13, 0.7);
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  padding: var(--space-xl);
}

.hero__badge {
  display: inline-block;
  padding: 8px 24px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--border-radius);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--white);
  margin-bottom: var(--space-2xl);
  background: rgba(255, 255, 255, 0.1);
}

.hero__title {
  font-size: var(--text-7xl);
  font-weight: 700;
  color: var(--white);
  margin-bottom: var(--space-lg);
  line-height: 1.1;
}

.hero__title span {
  color: var(--accent-light);
}

.hero__subtitle {
  font-size: var(--text-xl);
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-3xl);
  font-weight: 300;
  line-height: 1.7;
}

.hero__buttons {
  display: flex;
  gap: var(--space-lg);
  justify-content: center;
  flex-wrap: wrap;
}

.hero__scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: rgba(255, 255, 255, 0.5);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;

}

.hero__scroll-indicator .line {
  width: 1px;
  height: 40px;
  background: rgba(255, 255, 255, 0.4);

}



/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-radius: var(--border-radius);
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
}

.btn--primary {
  background: var(--accent);
  color: var(--white);
}

.btn--primary:hover {
  background: var(--accent-dark);
}

.btn--outline {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn--outline:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--white);
  color: var(--white);
}

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

.btn--outline-dark:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn--dark {
  background: var(--brown-dark);
  color: var(--white);
}

.btn--dark:hover {
  background: var(--black);
}

.btn svg,
.btn .btn-icon {
  width: 16px;
  height: 16px;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.about__image-wrapper {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}

.about__image-wrapper img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  border-radius: var(--border-radius-lg);
  transition: transform var(--transition-slower);
}

.about__image-wrapper:hover img {
  transform: scale(1.03);
}

.about__image-wrapper::after {
  display: none;
}

.about__experience-badge {
  position: absolute;
  bottom: 24px;
  right: 24px;
  background: var(--white);
  padding: var(--space-lg) var(--space-xl);
  border-radius: var(--border-radius);
  text-align: center;
  box-shadow: var(--shadow-md);
}

.about__experience-badge .number {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.about__experience-badge .label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--brown-medium);
  font-weight: 600;
}

.about__content h2 {
  margin-bottom: var(--space-lg);
}

.about__text {
  font-size: var(--text-base);
  line-height: 1.8;
  margin-bottom: var(--space-xl);
}

/* Stat Cards */
.about__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.stat-card {
  text-align: center;
  padding: var(--space-lg);
  background: var(--ivory);
  border-radius: var(--border-radius);
  border: 1px solid #E0E0E0;
  transition: all var(--transition-base);
}

.stat-card:hover {
  border-color: var(--accent);
}

.stat-card__number {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat-card__label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--brown-light);
  font-weight: 600;
}

/* Vision / Mission */
.values-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
}

.value-card {
  padding: var(--space-2xl);
  background: var(--ivory);
  border-radius: var(--border-radius-lg);
  border: 1px solid #E0E0E0;
  transition: all var(--transition-base);
}

.value-card:hover {
  border-color: var(--accent);
}

.value-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  border-radius: var(--border-radius);
  margin-bottom: var(--space-lg);
  color: var(--white);
  font-size: var(--text-xl);
}

.value-card h4 {
  margin-bottom: var(--space-md);
  color: var(--brown-dark);
}

.value-card p {
  font-size: var(--text-sm);
  line-height: 1.7;
}

/* ============================================
   PRODUCTS HUB
   ============================================ */
.products-hub__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3xl);
  margin-top: var(--space-3xl);
  justify-items: center;
}

.products-hub__grid > .product-card-full:last-child:nth-child(odd) {
  grid-column: 1 / -1;
  max-width: calc(50% - var(--space-3xl) / 2);
}

.product-showcase {
  position: relative;
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-slow);
  cursor: pointer;
}

.product-showcase:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.product-showcase__image {
  position: relative;
  height: 350px;
  overflow: hidden;
}

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

.product-showcase:hover .product-showcase__image img {
  transform: scale(1.03);
}

.product-showcase__image::after {
  display: none;
}

.product-showcase__badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 6px 16px;
  background: var(--accent);
  color: var(--white);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  border-radius: var(--border-radius);
  z-index: 2;
}

.product-showcase__content {
  padding: var(--space-2xl);
}

.product-showcase__name {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  color: var(--brown-dark);
  margin-bottom: var(--space-sm);
}

.product-showcase__scientific {
  font-style: italic;
  color: var(--accent);
  font-size: var(--text-sm);
  margin-bottom: var(--space-lg);
}

.product-showcase__desc {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--brown-light);
  margin-bottom: var(--space-xl);
}

.product-showcase__features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.product-showcase__feature-tag {
  padding: 4px 12px;
  background: var(--cream);
  border: 1px solid #E0E0E0;
  border-radius: var(--border-radius);
  font-size: var(--text-xs);
  color: var(--brown-medium);
  font-weight: 500;
}

.product-showcase__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: gap var(--transition-base);
}

.product-showcase__link:hover {
  gap: var(--space-md);
  color: var(--accent-dark);
}

.product-showcase__link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-base);
}

.product-showcase__link:hover svg {
  transform: translateX(4px);
}

/* ============================================
   PRODUCT CARD FULL (Merged)
   ============================================ */
.product-card-full {
  background: var(--white);
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-slow);
}

.product-card-full:hover {
  box-shadow: var(--shadow-lg);
}

.product-card-full__image {
  position: relative;
  height: 300px;
  overflow: hidden;
}

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

.product-card-full:hover .product-card-full__image img {
  transform: scale(1.03);
}

.product-card-full__body {
  padding: var(--space-2xl);
}

.product-card-full__body h3 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-xs);
}

.product-card-full__scientific {
  font-style: italic;
  color: var(--accent);
  font-size: var(--text-sm);
  margin-bottom: var(--space-lg);
}

.product-card-full__desc {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--brown-light);
  margin-bottom: var(--space-xl);
}

.product-card-full__details {
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 1px solid #E0E0E0;
}

.product-card-full__section-title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--brown-dark);
  margin-bottom: var(--space-md);
  margin-top: var(--space-xl);
}

.product-card-full__section-title:first-child {
  margin-top: 0;
}

.specs-grid-inline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}

.spec-inline {
  padding: var(--space-md);
  background: var(--ivory);
  border-radius: var(--border-radius);
  border: 1px solid #E0E0E0;
  text-align: center;
  transition: border-color var(--transition-base);
}

.spec-inline:hover { border-color: var(--accent); }

.spec-inline__label {
  display: block;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--brown-light);
  font-weight: 600;
  margin-bottom: 2px;
}

.spec-inline__value {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--brown-dark);
}

.app-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.app-tag {
  padding: 4px 14px;
  background: var(--ivory);
  border: 1px solid #E0E0E0;
  border-radius: var(--border-radius);
  font-size: var(--text-xs);
  color: var(--brown-medium);
  font-weight: 500;
  transition: border-color var(--transition-base);
}

.app-tag:hover { border-color: var(--accent); }

/* ============================================
   PDF VIEWER CONTROLS
   ============================================ */
.pdf-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  padding: var(--space-md) var(--space-xl);
  background: var(--brown-dark);
  color: var(--cream);
}

.pdf-nav-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--border-radius);
  color: var(--cream);
  cursor: pointer;
  transition: all var(--transition-base);
}

.pdf-nav-btn:hover { background: var(--accent); border-color: var(--accent); }

.pdf-page-info {
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.05em;
}

.pdf-canvas-wrapper {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  background: #525659;
  min-height: 200px;
  max-height: 75vh;
  overflow: auto;
  padding: var(--space-md);
}

.pdf-canvas-wrapper canvas {
  display: block;
  max-width: 100%;
  height: auto;
}

.pdf-placeholder { background: var(--white); }

/* ============================================
   ARTICLES SECTION
   ============================================ */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
}

.article-card {
  background: var(--white);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid #E0E0E0;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.article-card__body {
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.article-card__image {
  height: 180px;
  overflow: hidden;
}

.article-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-card__date {
  font-size: var(--text-xs);
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
}

.article-card__title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-sm);
  color: var(--brown-dark);
  line-height: 1.4;
}

.article-card__excerpt {
  font-size: var(--text-sm);
  color: var(--brown-light);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
  flex: 1;
}

.article-card__author {
  font-size: var(--text-xs);
  color: var(--brown-medium);
  margin-bottom: var(--space-md);
  font-weight: 500;
}

.article-card__link {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  cursor: pointer;
  border: none;
  background: none;
  padding: 0;
  font-family: var(--font-body);
  transition: color var(--transition-base);
  text-align: left;
}

.article-card__link:hover { color: var(--accent-dark); }

.articles-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-4xl);
  color: var(--brown-light);
}

.articles-empty p { font-size: var(--text-sm); margin-top: var(--space-md); }

/* Article Modal */
.article-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 2000;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: var(--space-3xl) var(--space-xl);
  overflow-y: auto;
}

.article-modal-overlay.active {
  display: flex;
}

.article-modal {
  background: var(--white);
  border-radius: var(--border-radius-xl);
  padding: var(--space-3xl) var(--space-3xl);
  max-width: 800px;
  width: 100%;
  position: relative;
  box-shadow: var(--shadow-xl);
}

.article-modal__close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ivory);
  border: 1px solid #E0E0E0;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-base);
}

.article-modal__close:hover {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
}

.article-modal__meta {
  display: flex;
  gap: var(--space-lg);
  font-size: var(--text-xs);
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-lg);
}

.article-modal h2 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-lg);
}

.article-modal__body {
  font-size: var(--text-base);
  line-height: 1.8;
  color: var(--brown-medium);
}

.article-modal__body h1, .article-modal__body h2, .article-modal__body h3 {
  color: var(--brown-dark);
  margin: var(--space-xl) 0 var(--space-md);
}

.article-modal__body p { margin-bottom: var(--space-md); }
.article-modal__body a { color: var(--accent); text-decoration: underline; }
.article-modal__body ul, .article-modal__body ol { margin: var(--space-md) 0 var(--space-md) var(--space-xl); }
.article-modal__body li { margin-bottom: var(--space-sm); }

/* ============================================
   PRODUCT DETAIL SECTIONS
   ============================================ */
.product-detail {
  position: relative;
}

.product-detail__header {
  position: relative;
  padding: var(--space-5xl) 0 var(--space-4xl);
  overflow: hidden;
}

.product-detail__header-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.12;
}

.product-detail__header-content {
  position: relative;
  z-index: 2;
}

.product-detail__name {
  font-size: var(--text-5xl);
  margin-bottom: var(--space-sm);
}

.product-detail__scientific {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: var(--text-xl);
  color: var(--accent);
  margin-bottom: var(--space-xl);
}

.product-detail__overview {
  font-size: var(--text-lg);
  max-width: 700px;
  line-height: 1.8;
}

/* Specs Grid */
.specs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-xl);
  margin: var(--space-3xl) 0;
}

.spec-card {
  padding: var(--space-xl);
  background: var(--white);
  border-radius: var(--border-radius-lg);
  border: 1px solid #E0E0E0;
  text-align: center;
  transition: all var(--transition-base);
}

.spec-card:hover {
  border-color: var(--accent);
}

.spec-card__icon {
  width: 50px;
  height: 50px;
  margin: 0 auto var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--cream);
  border-radius: 50%;
  font-size: var(--text-xl);
}

.spec-card__label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--brown-light);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.spec-card__value {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--brown-dark);
}

.spec-card__note {
  font-size: var(--text-xs);
  color: var(--accent);
  margin-top: var(--space-xs);
  font-weight: 500;
}

/* Applications */
.applications {
  margin: var(--space-3xl) 0;
}

.applications__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.application-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--white);
  border-radius: var(--border-radius);
  border: 1px solid #E0E0E0;
  transition: all var(--transition-base);
}

.application-card:hover {
  border-color: var(--accent);
}

.application-card__icon {
  font-size: var(--text-2xl);
  flex-shrink: 0;
}

.application-card__text {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--brown-dark);
}

/* ============================================
   CERTIFICATIONS
   ============================================ */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
}

.cert-card {
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-base);
}

.cert-card:hover {
  border-color: var(--accent-light);
}

.cert-card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  border-radius: 50%;
  color: var(--white);
}

.cert-card h4 {
  margin-bottom: var(--space-md);
}

.cert-card p {
  font-size: var(--text-sm);
  line-height: 1.7;
}

/* ============================================
   EXPORT & PACKAGING
   ============================================ */
.export__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.export__image-wrapper {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}

.export__image-wrapper img {
  width: 100%;
  height: 450px;
  object-fit: cover;
  border-radius: var(--border-radius-lg);
  transition: transform var(--transition-slower);
}

.export__image-wrapper:hover img {
  transform: scale(1.03);
}

.export__features {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.export-feature {
  display: flex;
  gap: var(--space-lg);
  align-items: flex-start;
}

.export-feature__icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--cream);
  border-radius: var(--border-radius);
  font-size: var(--text-xl);
  border: 1px solid #E0E0E0;
}

.export-feature h4 {
  margin-bottom: var(--space-xs);
  font-size: var(--text-lg);
}

.export-feature p {
  font-size: var(--text-sm);
  line-height: 1.7;
  margin: 0;
}

/* ============================================
   COMPANY PROFILE / PDF VIEWER
   ============================================ */
.pdf-section {
  text-align: center;
}

.pdf-viewer-wrapper {
  width: 100%;
  max-width: 900px;
  margin: var(--space-3xl) auto;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  background: var(--white);
  border: 1px solid #E0E0E0;
}

.pdf-viewer-fallback {
  padding: var(--space-4xl) var(--space-xl);
  text-align: center;
}

.pdf-viewer-fallback p {
  margin-bottom: var(--space-xl);
}

.pdf-download-cta {
  margin-top: var(--space-xl);
}

/* ============================================
   CONTACT
   ============================================ */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-4xl);
}

.contact__info {
  padding: var(--space-3xl);
  background: var(--brown-dark);
  border-radius: var(--border-radius-xl);
  color: var(--cream);
}

.contact__info h3 {
  color: var(--cream);
  margin-bottom: var(--space-lg);
}

.contact__info p {
  color: var(--brown-subtle);
  font-size: var(--text-sm);
  line-height: 1.8;
  margin-bottom: var(--space-2xl);
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.contact__detail {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.contact__detail-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(9, 145, 204, 0.15);
  border-radius: var(--border-radius);
  font-size: var(--text-lg);
  flex-shrink: 0;
}

.contact__detail-text {
  font-size: var(--text-sm);
  color: var(--brown-subtle);
  line-height: 1.6;
}

.contact__detail-text strong {
  display: block;
  color: var(--white);
  font-weight: 600;
  margin-bottom: 2px;
}

.contact__whatsapp {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  background: #25D366;
  color: var(--white);
  font-weight: 600;
  font-size: var(--text-sm);
  border-radius: 50px;
  transition: all var(--transition-base);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact__whatsapp:hover {
  background: #20BD5A;
}

/* Contact Form */
.contact__form-wrapper {
  padding: var(--space-3xl);
  background: var(--white);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid #E0E0E0;
}

.contact__form-wrapper h3 {
  margin-bottom: var(--space-xs);
}

.contact__form-wrapper>p {
  margin-bottom: var(--space-2xl);
  font-size: var(--text-sm);
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.form-group--full {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--brown-dark);
}

.form-group label span {
  color: var(--accent);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  border: 1px solid var(--brown-subtle);
  border-radius: var(--border-radius);
  font-size: var(--text-sm);
  color: var(--brown-dark);
  background: var(--ivory);
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(9, 145, 204, 0.15);
  background: var(--white);
}

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

.form-submit {
  margin-top: var(--space-xl);
  text-align: right;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--brown-dark);
  color: var(--cream);
  padding: var(--space-4xl) 0 var(--space-xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-3xl);
  padding-bottom: var(--space-3xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__brand p {
  font-size: var(--text-sm);
  color: var(--brown-subtle);
  line-height: 1.8;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.footer__brand-logo {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--cream);
  margin-bottom: var(--space-sm);
}

.footer__heading {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-light);
  margin-bottom: var(--space-xl);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer__link {
  font-size: var(--text-sm);
  color: var(--brown-subtle);
  transition: all var(--transition-fast);
}

.footer__link:hover {
  color: var(--accent-light);
  padding-left: 4px;
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  color: var(--brown-subtle);
  margin-bottom: var(--space-md);
  line-height: 1.6;
}

.footer__contact-item span:first-child {
  flex-shrink: 0;
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
}

.footer__copyright {
  font-size: var(--text-xs);
  color: var(--brown-light);
}

.footer__bottom-links {
  display: flex;
  gap: var(--space-xl);
}

.footer__bottom-links a {
  font-size: var(--text-xs);
  color: var(--brown-light);
  transition: color var(--transition-fast);
}

.footer__bottom-links a:hover {
  color: var(--accent-light);
}

/* ============================================
   WHATSAPP CHAT WIDGET
   ============================================ */
.wa-widget {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 998;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

/* FAB Button */
.wa-widget__fab {
  width: 60px;
  height: 60px;
  background: #25D366;
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.wa-widget__fab:hover {
  background: #20BD5A;
  transform: scale(1.05);
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.5);
}

.wa-widget__fab-icon {
  transition: all 0.3s ease;
  position: absolute;
}

.wa-widget__fab-icon--wa {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

.wa-widget__fab-icon--close {
  opacity: 0;
  transform: scale(0.5) rotate(-90deg);
}

.wa-widget.open .wa-widget__fab-icon--wa {
  opacity: 0;
  transform: scale(0.5) rotate(90deg);
}

.wa-widget.open .wa-widget__fab-icon--close {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

/* Pulse animation */
@keyframes wa-pulse {
  0% { box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4); }
  50% { box-shadow: 0 4px 24px rgba(37, 211, 102, 0.6), 0 0 0 8px rgba(37, 211, 102, 0.1); }
  100% { box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4); }
}

.wa-widget__fab {
  animation: wa-pulse 3s ease-in-out infinite;
}

.wa-widget__fab:hover,
.wa-widget.open .wa-widget__fab {
  animation: none;
}

/* Popup */
.wa-widget__popup {
  position: absolute;
  bottom: calc(100% + 16px);
  right: 0;
  width: 360px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.18), 0 4px 16px rgba(0, 0, 0, 0.1);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.95);
  transform-origin: bottom right;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
}

.wa-widget.open .wa-widget__popup {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

/* Header */
.wa-widget__header {
  background: #075E54;
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.wa-widget__header-info {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.wa-widget__avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
}

.wa-widget__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.wa-widget__header-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.wa-widget__name {
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.wa-widget__status {
  color: rgba(255, 255, 255, 0.7);
  font-size: 12px;
  line-height: 1.3;
}

.wa-widget__close {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.7);
  cursor: pointer;
  padding: 4px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.wa-widget__close:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

/* Body */
.wa-widget__body {
  background: #E5DDD5;
  background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23cdc5ba' fill-opacity='0.3'%3E%3Ccircle cx='20' cy='20' r='1.5'/%3E%3Ccircle cx='50' cy='50' r='1'/%3E%3Ccircle cx='80' cy='30' r='1.2'/%3E%3Ccircle cx='30' cy='70' r='0.8'/%3E%3Ccircle cx='70' cy='80' r='1'/%3E%3C/g%3E%3C/svg%3E");
  padding: 20px 16px;
  min-height: 180px;
  max-height: 280px;
  overflow-y: auto;
}

/* Chat Bubble */
.wa-widget__bubble {
  background: #fff;
  border-radius: 0 8px 8px 8px;
  padding: 10px 14px;
  max-width: 88%;
  position: relative;
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.08);
}

.wa-widget__bubble::before {
  content: '';
  position: absolute;
  top: 0;
  left: -8px;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 8px 8px 0;
  border-color: transparent #fff transparent transparent;
}

.wa-widget__bubble-name {
  font-size: 13px;
  font-weight: 600;
  color: #075E54;
  margin-bottom: 4px;
}

.wa-widget__bubble p {
  font-size: 13.5px;
  line-height: 1.5;
  color: #303030;
  margin: 0;
}

.wa-widget__bubble-time {
  display: block;
  text-align: right;
  font-size: 11px;
  color: #999;
  margin-top: 4px;
}

/* Footer / Input */
.wa-widget__footer {
  background: #F0F0F0;
  padding: 10px 12px;
}

.wa-widget__input-form {
  display: flex;
  align-items: center;
  gap: 8px;
}

.wa-widget__input {
  flex: 1;
  border: none;
  border-radius: 20px;
  padding: 10px 16px;
  font-size: 14px;
  background: #fff;
  color: #303030;
  outline: none;
  font-family: inherit;
}

.wa-widget__input::placeholder {
  color: #999;
}

.wa-widget__send {
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: #25D366;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.2s ease;
}

.wa-widget__send:hover {
  background: #20BD5A;
}

/* ============================================
   BACK TO TOP
   ============================================ */
.back-to-top {
  position: fixed;
  bottom: 30px;
  left: 30px;
  width: 44px;
  height: 44px;
  background: var(--accent);
  color: var(--white);
  border: none;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: 999;
}

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

.back-to-top:hover {
  background: var(--accent-dark);
}



/* ============================================
   GALLERY & DOCUMENTATION
   ============================================ */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-3xl);
}

.gallery-item {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  aspect-ratio: 1 / 1;
}

.gallery-item:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slower);
}

.gallery-item:hover img {
  transform: scale(1.08);
}

/* Lightbox */
.gallery-lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  z-index: 3000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  cursor: zoom-out;
}

.gallery-lightbox.active {
  display: flex;
}

.gallery-lightbox img {
  max-width: 90%;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--border-radius-lg);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
}

.gallery-lightbox__close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  color: var(--white);
  cursor: pointer;
  transition: all var(--transition-base);
}

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

.gallery-lightbox__caption {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  letter-spacing: 0.05em;
  text-align: center;
  white-space: nowrap;
}

/* ============================================
   RESPONSIVE — TABLET (768px)
   ============================================ */
@media (max-width: 1024px) {
  :root {
    --text-7xl: 3.5rem;
    --text-6xl: 3rem;
    --text-5xl: 2.5rem;
    --text-4xl: 2rem;
  }

  .section {
    padding: var(--space-4xl) 0;
  }

  .about__grid,
  .export__grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .about__image-wrapper img,
  .export__image-wrapper img {
    height: 350px;
  }

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

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
  }

  /* Gallery */
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --text-7xl: 2.75rem;
    --text-6xl: 2.25rem;
    --text-5xl: 2rem;
    --text-4xl: 1.75rem;
    --text-3xl: 1.5rem;
  }

  .container {
    padding: 0 var(--space-lg);
  }

  .section {
    padding: var(--space-3xl) 0;
  }

  /* Navbar Mobile */
  .navbar__menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 350px;
    height: 100vh;
    background: var(--cream);
    flex-direction: column;
    align-items: flex-start;
    padding: 100px var(--space-2xl) var(--space-2xl);
    gap: var(--space-lg);
    transition: right var(--transition-base);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.15);
  }

  .navbar__menu.open {
    right: 0;
  }

  .navbar__menu .navbar__link {
    color: var(--brown-dark);
    font-size: var(--text-base);
  }

  .navbar__menu .navbar__cta {
    align-self: stretch;
    text-align: center;
    margin-top: var(--space-lg);
  }

  .navbar__hamburger {
    display: flex;
  }

  /* Mobile overlay */
  .mobile-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 999;
  }

  .mobile-overlay.active {
    display: block;
  }

  /* Products */
  .products-hub__grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .product-showcase__image {
    height: 250px;
  }

  .specs-grid-inline {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .article-modal {
    padding: var(--space-xl);
    margin: var(--space-md);
  }

  .article-modal h2 {
    font-size: var(--text-2xl);
  }

  /* Specs */
  .specs-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Certifications */
  .certs-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  /* About */
  .about__stats {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
  }

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

  /* Form */
  .form-grid {
    grid-template-columns: 1fr;
  }

  /* Footer */
  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  /* PDF */
  .pdf-canvas-wrapper {
    max-height: 60vh;
  }

  /* Hero */
  .hero__buttons {
    flex-direction: column;
    align-items: center;
  }

  /* Gallery */
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  :root {
    --text-7xl: 2.25rem;
    --text-6xl: 1.875rem;
    --text-5xl: 1.75rem;
  }

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

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

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

  .hero__badge {
    font-size: 0.65rem;
    padding: 6px 16px;
  }

  .back-to-top {
    bottom: 20px;
    left: 20px;
    width: 40px;
    height: 40px;
  }

  .wa-widget {
    bottom: 16px;
    right: 16px;
  }

  .wa-widget__fab {
    width: 52px;
    height: 52px;
  }

  .wa-widget__popup {
    width: calc(100vw - 32px);
    right: 0;
  }

  .pdf-canvas-wrapper {
    max-height: 50vh;
    padding: var(--space-sm);
  }

  /* Gallery */
  .gallery-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   UTILITY — PRINT
   ============================================ */
@media print {

  .navbar,
  .back-to-top,
  .wa-widget,
  .hero__scroll-indicator {
    display: none !important;
  }

  .hero {
    min-height: auto;
    padding: var(--space-3xl) 0;
  }

  .section {
    padding: var(--space-2xl) 0;
    page-break-inside: avoid;
  }
}