/* ==========================================================================
   OXYSOM — Warm Organic Botanical Brand Design System
   Matches Authentic Packaging Tones, Sunlit Kitchen & Earthy Palette
   ========================================================================== */

:root {
  /* Warm Earth & Botanical Palette */
  --bg-porcelain: #faf7f2;
  --bg-cream: #f4ede1;
  --bg-cream-dark: #ebe1d2;
  --bg-card: #ffffff;
  --bg-card-subtle: #f9f5ee;
  
  --forest-dark: #1e2c21;
  --forest-primary: #2d4533;
  --forest-medium: #3d5c47;
  --forest-light: #587c63;
  --forest-glow: rgba(45, 69, 51, 0.18);
  
  --kraft-dark: #6e4e30;
  --kraft-primary: #9c734b;
  --kraft-light: #cfa87e;
  --kraft-bg: #f5ebe0;
  
  --olive-primary: #4f614b;
  --olive-bg: #eef2ec;
  
  --text-main: #212822;
  --text-muted: #647065;
  --text-dim: #8b968c;
  
  --border-light: rgba(60, 80, 65, 0.1);
  --border-medium: rgba(60, 80, 65, 0.2);
  --border-kraft: rgba(156, 115, 75, 0.3);
  
  --whatsapp-green: #25d366;
  --whatsapp-dark: #128c7e;
  
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  --shadow-subtle: 0 4px 20px rgba(45, 69, 51, 0.05);
  --shadow-medium: 0 12px 36px rgba(45, 69, 51, 0.09);
  --shadow-heavy: 0 20px 50px rgba(45, 69, 51, 0.14);
  
  --transition: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-porcelain);
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.max-w-800 {
  max-width: 820px;
  margin: 0 auto;
}

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

/* Section Base */
.section {
  padding: 90px 0;
  position: relative;
}

.section-kicker {
  display: inline-block;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  color: var(--forest-primary);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 3.8vw, 3.2rem);
  font-weight: 700;
  color: var(--forest-dark);
  line-height: 1.15;
  margin-bottom: 12px;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

.section-header-center {
  text-align: center;
  margin-bottom: 50px;
}

/* --- Top Announcement Strip --- */
.brand-top-strip {
  background: var(--forest-dark);
  color: #f2ede4;
  text-align: center;
  padding: 8px 16px;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.brand-top-strip i {
  color: #79a685;
  margin-right: 6px;
}

/* --- Navigation Header --- */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 100;
  background: rgba(250, 247, 242, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-light);
  transition: all var(--transition);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 88px;
}

.brand-identity {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-emblem-img {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 4px 12px rgba(45, 69, 51, 0.12);
}

.brand-name-text {
  font-family: var(--font-serif);
  font-size: 1.95rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--forest-dark);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: color var(--transition);
}

.nav-link:hover {
  color: var(--forest-primary);
}

.btn-whatsapp-header {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--forest-primary);
  color: #ffffff;
  font-size: 0.88rem;
  font-weight: 700;
  padding: 10px 20px;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-subtle);
  transition: all var(--transition);
}

.btn-whatsapp-header:hover {
  background: var(--forest-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.btn-whatsapp-header i {
  color: var(--whatsapp-green);
  font-size: 1.1rem;
}

/* --- HERO SECTION --- */
.hero-section {
  padding: 70px 0 90px;
  background: linear-gradient(180deg, var(--bg-porcelain) 0%, var(--bg-cream) 100%);
  position: relative;
  overflow: hidden;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-editorial {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--olive-bg);
  border: 1px solid rgba(79, 97, 75, 0.25);
  color: var(--forest-primary);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.hero-main-title {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 5vw, 4.4rem);
  font-weight: 800;
  color: var(--forest-dark);
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}

.title-accent-green {
  color: var(--forest-primary);
  font-style: italic;
}

.hero-desc-text {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 520px;
  margin-bottom: 28px;
}

/* 5 Packaging Badges Row */
.official-badges-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.badge-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--forest-dark);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

.badge-item i {
  color: var(--kraft-primary);
  font-size: 0.75rem;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.btn-primary-green {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--forest-primary);
  color: #ffffff;
  font-size: 0.96rem;
  font-weight: 700;
  padding: 15px 32px;
  border-radius: var(--radius-full);
  box-shadow: 0 6px 20px rgba(45, 69, 51, 0.25);
  transition: all var(--transition);
}

.btn-primary-green:hover {
  background: var(--forest-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(45, 69, 51, 0.35);
}

.btn-primary-green i {
  color: var(--whatsapp-green);
  font-size: 1.2rem;
}

.btn-secondary-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  color: var(--forest-dark);
  font-size: 0.94rem;
  font-weight: 600;
  padding: 14px 26px;
  border-radius: var(--radius-full);
  transition: all var(--transition);
}

.btn-secondary-outline:hover {
  border-color: var(--forest-primary);
  background: #ffffff;
  transform: translateY(-2px);
}

.hero-quick-specs {
  display: flex;
  align-items: center;
  gap: 24px;
  border-top: 1px solid var(--border-light);
  padding-top: 20px;
  width: 100%;
}

.spec-col strong {
  display: block;
  font-size: 1.15rem;
  color: var(--forest-dark);
}

.spec-col span {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Hero Right Visual Card */
.hero-visual-stage {
  display: flex;
  justify-content: center;
}

.hero-image-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-heavy);
  border: 4px solid #ffffff;
  background: #ffffff;
}

.hero-main-photo {
  width: 100%;
  max-width: 520px;
  height: auto;
  display: block;
  transition: transform 0.6s ease;
}

.hero-image-card:hover .hero-main-photo {
  transform: scale(1.03);
}

.hero-floating-tag {
  position: absolute;
  bottom: 20px;
  left: 20px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  padding: 8px 18px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.tag-title {
  display: block;
  font-size: 0.84rem;
  font-weight: 800;
  color: var(--forest-dark);
}

.tag-sub {
  font-size: 0.74rem;
  color: var(--kraft-primary);
  font-weight: 700;
}

/* --- ABOUT STORY SECTION --- */
.about-section {
  background: var(--bg-porcelain);
}

.about-card-nature {
  background: var(--bg-cream);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  text-align: center;
  box-shadow: var(--shadow-subtle);
}

.section-lead {
  font-size: 1.25rem;
  color: var(--forest-dark);
  max-width: 780px;
  margin: 0 auto 16px;
  line-height: 1.6;
}

.section-body {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.nature-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.nature-stat-box {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  padding: 24px 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-subtle);
}

.stat-big {
  display: block;
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--forest-primary);
  line-height: 1;
  margin-bottom: 6px;
}

.stat-lbl {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-muted);
}

/* --- THE 2 SIGNATURE PRODUCTS SECTION --- */
.products-section {
  background: var(--bg-porcelain);
}

.products-grid-nature {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 36px;
}

.nature-product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-medium);
  display: flex;
  flex-direction: column;
  transition: all var(--transition);
}

.nature-product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-heavy);
  border-color: var(--forest-primary);
}

.product-image-container {
  background: #fbf9f5;
  padding: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border-light);
}

.product-canister-photo {
  max-height: 380px;
  width: auto;
  object-fit: contain;
  transition: transform 0.4s ease;
}

.nature-product-card:hover .product-canister-photo {
  transform: scale(1.04);
}

.product-info-panel {
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-edition-pill {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--kraft-dark);
  background: var(--kraft-bg);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}

.pill-olive {
  color: var(--forest-dark) !important;
  background: var(--olive-bg) !important;
}

.product-card-title {
  font-family: var(--font-serif);
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--forest-dark);
  margin-bottom: 10px;
}

.product-card-desc {
  font-size: 0.96rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
}

.product-specs-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-top: 1px solid var(--border-light);
  padding-top: 16px;
  margin-bottom: 24px;
}

.spec-line {
  font-size: 0.86rem;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.spec-line i {
  color: var(--forest-primary);
  font-size: 0.8rem;
}

.spec-line strong {
  color: var(--forest-dark);
}

.product-footer-action {
  margin-top: auto;
}

.btn-product-whatsapp {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--forest-primary);
  color: #ffffff;
  font-size: 0.94rem;
  font-weight: 700;
  padding: 14px 24px;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-subtle);
  transition: all var(--transition);
}

.btn-product-whatsapp:hover {
  background: var(--forest-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.btn-product-whatsapp i {
  color: var(--whatsapp-green);
  font-size: 1.15rem;
}

.btn-olive-action {
  background: var(--olive-primary) !important;
}

.btn-olive-action:hover {
  background: var(--forest-dark) !important;
}

/* --- SUGAR CALCULATOR --- */
.calculator-section {
  background: var(--bg-cream);
}

.calc-card-container {
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  box-shadow: var(--shadow-medium);
}

.calc-grid-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  margin-top: 36px;
}

.calc-controls-col {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.slider-control-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.slider-meta-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.slider-meta-header label {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--forest-dark);
}

.value-pill {
  font-size: 0.86rem;
  font-weight: 800;
  color: var(--forest-primary);
  background: var(--olive-bg);
  padding: 3px 12px;
  border-radius: var(--radius-full);
}

.slider-track-wrap {
  position: relative;
  width: 100%;
}

.nature-range-slider {
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: #e2ded5;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
  display: block;
}

.nature-range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--forest-primary);
  box-shadow: 0 2px 8px rgba(45, 69, 51, 0.35);
  cursor: pointer;
  border: 2px solid #ffffff;
  transition: transform 0.15s ease;
}

.nature-range-slider::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--forest-primary);
  box-shadow: 0 2px 8px rgba(45, 69, 51, 0.35);
  cursor: pointer;
  border: 2px solid #ffffff;
}

.slider-ticks-line {
  position: relative;
  width: 100%;
  height: 22px;
  margin-top: 8px;
}

.slider-ticks-line span {
  position: absolute;
  transform: translateX(-50%);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
  transition: all 0.2s ease;
}

.slider-ticks-line span.tick-active {
  color: var(--forest-primary);
  font-weight: 800;
  transform: translateX(-50%) scale(1.2);
}

.btn-calc-whatsapp {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--forest-primary);
  color: #ffffff;
  font-size: 0.94rem;
  font-weight: 700;
  padding: 14px 20px;
  border-radius: var(--radius-full);
  margin-top: 8px;
  transition: all var(--transition);
}

.btn-calc-whatsapp:hover {
  background: var(--forest-dark);
}

.btn-calc-whatsapp i {
  color: var(--whatsapp-green);
  font-size: 1.15rem;
}

/* Calculator Output Column */
.calc-results-col {
  background: var(--bg-cream);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 32px 28px;
}

.annual-highlight-box {
  text-align: center;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-medium);
  margin-bottom: 24px;
}

.box-tag {
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--kraft-dark);
  text-transform: uppercase;
}

.huge-metric-val {
  font-family: var(--font-serif);
  font-size: 3.4rem;
  font-weight: 800;
  color: var(--forest-dark);
  line-height: 1.05;
  margin: 6px 0;
}

.huge-metric-sub {
  font-size: 0.88rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.mini-metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.mini-metric-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 12px;
  text-align: center;
}

.mini-val {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--forest-primary);
}

.mini-lbl {
  font-size: 0.74rem;
  color: var(--text-muted);
}

/* --- NUTRITION & SCIENCE SECTION --- */
.science-section {
  background: var(--bg-porcelain);
}

.science-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.nutrition-card-wrap, .benefits-card-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  box-shadow: var(--shadow-subtle);
}

.science-card-title {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--forest-dark);
  margin-bottom: 6px;
}

.science-card-sub {
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.nutrition-facts-table {
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.nutrition-row {
  display: flex;
  justify-content: space-between;
  padding: 10px 16px;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border-light);
}

.nutrition-row:last-child {
  border-bottom: none;
}

.highlight-row {
  background: var(--olive-bg);
  font-weight: 700;
  color: var(--forest-dark);
}

.sub-row {
  padding-left: 28px;
  color: var(--text-muted);
}

.benefits-nature-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.benefit-nature-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.benefit-icon-circle {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--olive-bg);
  color: var(--forest-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  flex-shrink: 0;
}

.benefit-nature-item h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--forest-dark);
  margin-bottom: 4px;
}

.benefit-nature-item p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* --- FAQ SECTION --- */
.faq-section {
  background: var(--bg-cream);
}

.faq-accordion-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  box-shadow: var(--shadow-subtle);
  transition: all var(--transition);
}

.faq-item[open] {
  border-color: var(--forest-primary);
}

.faq-question {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--forest-dark);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 0.85rem;
  color: var(--forest-primary);
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-question::after {
  transform: rotate(180deg);
}

.faq-answer {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-light);
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --- FOOTER --- */
.site-footer {
  background: var(--forest-dark);
  color: #dce4dc;
  padding: 60px 0 40px;
}

.footer-layout {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 36px;
}

.footer-logo-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.footer-logo-emblem {
  border-radius: 50%;
  filter: invert(1);
  mix-blend-mode: screen;
}

.footer-brand-name {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: #ffffff;
}

.footer-tagline {
  font-size: 0.9rem;
  color: #aebbae;
  max-width: 440px;
  margin-bottom: 16px;
}

.footer-badges-pill {
  display: flex;
  gap: 12px;
  font-size: 0.78rem;
  color: #79a685;
}

.footer-info-column {
  font-size: 0.88rem;
  line-height: 1.7;
}

.footer-heading {
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
}

.footer-info-column strong { color: #ffffff; }
.footer-info-column a { color: #79a685; }
.footer-copy-text { font-size: 0.76rem; color: #7a8c7b; margin-top: 10px; }

/* --- STICKY FLOATING WHATSAPP BUTTON --- */
.floating-whatsapp-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--whatsapp-green);
  color: #ffffff;
  font-weight: 800;
  font-size: 0.94rem;
  padding: 14px 24px;
  border-radius: var(--radius-full);
  box-shadow: 0 10px 30px rgba(37, 211, 102, 0.45);
  transition: all var(--transition);
}

.floating-whatsapp-btn:hover {
  background: #20ba5a;
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 14px 36px rgba(37, 211, 102, 0.6);
}

.floating-whatsapp-btn i {
  font-size: 1.3rem;
}

/* --- RESPONSIVE MEDIA QUERIES (TABLET & MOBILE) --- */

@media (max-width: 1100px) {
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-visual-stage {
    order: -1;
    width: 100%;
    max-width: 580px;
    margin: 0 auto;
  }
  .calc-grid-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .products-grid-nature {
    grid-template-columns: 1fr;
    max-width: 680px;
    margin: 0 auto;
  }
  .science-grid {
    grid-template-columns: 1fr;
    max-width: 680px;
    margin: 0 auto;
  }
  .nature-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }

  .nav-menu {
    display: none;
  }

  .header-container {
    height: 68px;
    padding: 0 16px;
  }

  .brand-name-text {
    font-size: 1.45rem;
  }

  .btn-whatsapp-header span {
    display: none;
  }

  .btn-whatsapp-header {
    padding: 8px 12px;
  }

  .hero-section {
    padding: 40px 0 60px;
  }

  .hero-main-title {
    font-size: clamp(2.2rem, 8vw, 3.2rem);
  }

  .hero-desc-text {
    font-size: 1rem;
    line-height: 1.6;
  }

  .official-badges-row {
    gap: 6px;
  }

  .badge-item {
    font-size: 0.72rem;
    padding: 4px 10px;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
    align-items: stretch;
  }

  .btn-primary-green, .btn-secondary-outline {
    width: 100%;
    justify-content: center;
    padding: 13px 20px;
  }

  .hero-quick-specs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .about-card-nature {
    padding: 36px 20px;
  }

  .nature-stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .stat-big {
    font-size: 1.9rem;
  }

  .product-image-container {
    padding: 20px 14px;
  }

  .product-canister-photo {
    max-height: 280px;
  }

  .product-info-panel {
    padding: 26px 20px;
  }

  .product-card-title {
    font-size: 1.55rem;
  }

  .calc-card-container {
    padding: 36px 18px;
  }

  .huge-metric-val {
    font-size: 2.6rem;
  }

  .mini-metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .mini-val {
    font-size: 1.3rem;
  }

  .nutrition-card-wrap, .benefits-card-wrap {
    padding: 28px 18px;
  }

  .nutrition-row {
    padding: 8px 12px;
    font-size: 0.84rem;
  }

  .footer-layout {
    flex-direction: column;
    gap: 30px;
  }

  .floating-whatsapp-btn span {
    display: none;
  }

  .floating-whatsapp-btn {
    width: 52px;
    height: 52px;
    padding: 0;
    justify-content: center;
    border-radius: 50%;
    bottom: 18px;
    right: 18px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .section-title {
    font-size: 1.9rem;
  }

  .hero-main-title {
    font-size: 2rem;
  }

  .hero-floating-tag {
    bottom: 12px;
    left: 12px;
    padding: 6px 12px;
  }

  .nature-stats-grid {
    grid-template-columns: 1fr;
  }

  .slider-ticks-line span {
    font-size: 0.72rem;
  }

  .spec-line {
    font-size: 0.8rem;
  }

  .benefit-nature-item {
    gap: 10px;
  }
}