:root {
  /* Core Colors - Refined Slate & Teal Green */
  --primary: #0f172a;
  --primary-rgb: 15, 23, 42;
  --secondary: #25a36f; /* New Teal Green Theme */
  --secondary-light: #54d19d;
  --secondary-dark: #1a7c54;
  --accent: #f97316;
  --accent-light: #fdba74;

  /* Backgrounds with slight tints */
  --bg-main: #ffffff;
  --bg-alt: #f1f7f5; /* Slight teal tint */
  --bg-card: #ffffff;
  --bg-dark: #0f172a;

  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.2);

  /* Typography */
  --text-heading: #0f172a;
  --text-body: #334155;
  --text-muted: #64748b;
  --font-family: "Inter", system-ui, -apple-system, sans-serif;

  /* UI Interface */
  --border: #e2e8f0;
  --border-radius: 24px;
  --border-radius-lg: 32px;
  --border-radius-sm: 12px;

  /* Premium Shadows */
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1),
    0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1),
    0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-glow: 0 0 20px rgba(37, 163, 111, 0.2);

  /* Layout */
  --max-width: 1200px;
  --header-height: 80px;
}

/* --- RESET & GLOBAL STYLES --- */
html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block; /* Prevents inline spacing issues */
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

ul {
  list-style: none;
}

/* Typography Scale */
h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--text-heading);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em; /* Tighter headings for modern look */
}

h1 {
  font-size: 3rem;
}
@media (max-width: 768px) {
  h1 {
    font-size: 2.25rem;
  }
  h2 {
    font-size: 1.85rem;
  }
  h3 {
    font-size: 1.5rem;
  }
}
h2 {
  font-size: 2.25rem;
}
h3 {
  font-size: 1.5rem;
}
h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: 1rem;
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

@media (min-width: 768px) {
  .container {
    padding: 0 2rem;
  }
}

/* Section Spacing - giving content room to breathe */
.section {
  padding: 4rem 0; /* Slightly reduced for mobile */
}

@media (min-width: 1024px) {
  .section {
    padding: 7rem 0;
  }
}

/* --- BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  border-radius: 50px; /* Pill shape for modern feel */
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  border: none;
  gap: 0.5rem;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, #ea580c 100%);
  color: white;
  box-shadow: 0 10px 15px -3px rgba(249, 115, 22, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 20px 25px -5px rgba(249, 115, 22, 0.4);
  filter: brightness(1.1);
}

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

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

.btn-large {
  padding: 1rem 2.5rem;
  font-size: 1.125rem;
}

/* --- HEADER & NAV --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  z-index: 1000;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

@media (max-width: 768px) {
  :root {
    --header-height: 70px;
  }
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  display: block;
  max-width: 100%;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-list {
  display: flex;
  gap: 2rem;
}

.nav-link {
  color: var(--text-body);
  font-weight: 600;
  font-size: 0.95rem;
  position: relative;
}

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

.nav-link::after {
  content: "";
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background-color: var(--accent);
  transition: width 0.3s ease;
}

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

.nav-buttons .btn {
  height: 44px; /* Slightly smaller for header */
}

/* Mobile Nav Toggle */
.nav-toggle,
.nav-close {
  display: none;
  font-size: 1.5rem;
  color: var(--primary);
  cursor: pointer;
}

/* Mobile Responsive Menu */
@media (max-width: 968px) {
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 400px;
    height: 100vh;
    background-color: white;
    flex-direction: column;
    align-items: flex-start;
    padding: 5rem 2rem;
    box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .nav-menu.show-menu {
    right: 0;
  }

  .nav-list {
    flex-direction: column;
    width: 100%;
    gap: 1.5rem;
    margin-bottom: 2rem;
  }

  .nav-link {
    color: var(--text-heading);
    font-size: 1.25rem;
    font-weight: 600;
  }

  .nav-link:hover::after {
    display: none; /* No underline on mobile */
  }

  .nav-toggle {
    display: block;
  }

  .nav-close {
    display: block;
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    color: var(--text-heading);
  }

  .nav-buttons {
    width: 100%;
  }

  .nav-buttons .btn {
    width: 100%;
  }
}

/* --- HERO SECTION --- */
.hero {
  padding-top: calc(var(--header-height) + 2rem); /* Reduced top space */
  padding-bottom: 4rem; /* Reduced bottom space */
  background: radial-gradient(circle at top right, #f8fafc 0%, #ffffff 60%);
  display: flex;
  align-items: center;
  min-height: 70vh; /* Reduced from 90vh to minimize empty space */
  position: relative;
  overflow: hidden;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-areas: "image" "text"; /* Image first on mobile */
  gap: 2.5rem; /* Reduced gap from 4rem */
  align-items: center;
}

@media (min-width: 1024px) {
  .hero .container {
    grid-template-columns: 1.1fr 0.9fr;
    grid-template-areas: "text image"; /* Restore desktop order */
  }
}

.hero-text {
  grid-area: text;
}

.hero-image {
  grid-area: image;
}

.hero-text h1 {
  margin-bottom: 1.5rem;
  color: var(--primary);
  line-height: 1.1;
  font-size: clamp(2rem, 8vw, 4rem); /* Improved fluid scale */
  background: linear-gradient(
    to bottom right,
    var(--primary) 30%,
    var(--secondary) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.04em;
}

.hero-text .subheadline {
  display: block;
  font-size: 1.25rem;
  color: var(--secondary);
  font-weight: 600;
  margin-bottom: 2rem;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.feature-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.feature-item p {
  margin-bottom: 0;
  font-size: 1.05rem;
}

.feature-icon {
  color: var(--secondary);
  background: var(--bg-alt);
  border-radius: 50%;
  padding: 2px; /* Visual sizing */
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

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

@media (max-width: 480px) {
  .hero-btns .btn {
    width: 100%;
  }
}

.hero-image {
  position: relative;
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-15px);
  }
}

/* Ensure animated containers have enough overflow space */
.hero-image,
.features-image-container,
.overview-image-wrapper {
  padding: 15px 0;
}

.hero-image {
  position: relative;
  animation: float 6s ease-in-out infinite;
}

/* --- GLOBAL ANIMATIONS --- */
/* Apply specific delays so they don't all move in sync */

/* Features: Animate Container to avoid clipping issues with overflow:hidden */
.features-image-container {
  animation: float 6s ease-in-out infinite;
  animation-delay: 1s;
}

.overview-image-wrapper img {
  animation: float 6s ease-in-out infinite;
  animation-delay: 0.5s;
}

.science-image img {
  animation: float 6s ease-in-out infinite;
  animation-delay: 1.5s;
}

.how-to-image img {
  animation: float 6s ease-in-out infinite;
  animation-delay: 2s;
}

.benefits-image img {
  animation: float 6s ease-in-out infinite;
  animation-delay: 0.8s;
}

.shipping-image img {
  animation: float 6s ease-in-out infinite;
  animation-delay: 1.2s;
}

.about-image img {
  animation: float 6s ease-in-out infinite;
  animation-delay: 2.5s;
}

.clinical-image img {
  animation: float 6s ease-in-out infinite;
  animation-delay: 1.8s;
}

.hero-image img {
  border-radius: 2rem;
  max-width: 100%;
}

@media (min-width: 1024px) {
  .hero-image img {
    max-width: 110%; /* Slightly expanded overlap */
    margin-left: -5%;
  }
}

/* Expanded Hero Background */
.hero::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: 800px;
  height: 800px;
  background: radial-gradient(
    circle,
    rgba(59, 130, 246, 0.08) 0%,
    transparent 60%
  );
  z-index: 0;
}

@media (max-width: 768px) {
  .hero::before,
  .overview::before {
    display: none; /* Hide heavy decorations on mobile */
  }
}

/* --- PRODUCT OVERVIEW --- */
.overview {
  background-color: var(--bg-main);
  position: relative;
  overflow: hidden;
}

/* Background Decoration */
.overview::before {
  content: "";
  position: absolute;
  top: -10%;
  left: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(
    circle,
    rgba(59, 130, 246, 0.05) 0%,
    transparent 70%
  );
  z-index: 0;
}

.overview-intro {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 5rem;
  position: relative;
  z-index: 1;
}

.overview-intro h2 {
  margin-bottom: 1.5rem;
  font-size: 2.5rem;
  background: linear-gradient(to right, var(--primary), var(--secondary));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.overview-intro p {
  font-size: 1.25rem;
  color: var(--text-body);
  line-height: 1.8;
}

.overview-grid {
  display: grid;
  gap: 2.5rem;
  margin-bottom: 5rem;
  position: relative;
  z-index: 1;
}

@media (min-width: 768px) {
  .overview-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .overview-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.overview-card {
  background: white;
  border: 1px solid var(--border);
  padding: 3rem 2rem;
  border-radius: var(--border-radius);
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.overview-card:hover {
  transform: translateY(-12px);
  box-shadow: var(--shadow-xl);
  border-color: var(--secondary-light);
}

.overview-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.overview-icon-container {
  width: 64px;
  height: 64px;
  background: var(--bg-alt);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--secondary);
  transition: all 0.3s ease;
}

.overview-card:hover .overview-icon-container {
  background: var(--secondary);
  color: white;
  transform: rotate(360deg);
}

.overview-card p {
  font-size: 0.95rem;
  color: var(--text-body);
  line-height: 1.6;
  margin-bottom: 0;
}

.overview-image-wrapper {
  max-width: 1000px;
  margin: 0 auto;
  position: relative;
  padding: 1.5rem;
  background: white;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border);
}

.overview-image-wrapper img {
  border-radius: var(--border-radius);
  display: block;
  transition: transform 0.5s ease;
}

.overview-image-wrapper:hover img {
  transform: scale(1.02);
}

/* --- SPECS --- */
.specs {
  background-color: var(--bg-alt);
}

.specs-content {
  max-width: 900px;
  margin: 0 auto;
}

.specs-content h2 {
  text-align: center;
  margin-bottom: 2rem;
}
.specs-description {
  text-align: center;
  margin-bottom: 3rem;
}

.specs-table {
  width: 100%;
  border-collapse: separate; /* Allows border radius */
  border-spacing: 0;
  background: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  font-size: 1.125rem;
  color: var(--text-body);
}

.specs-visual-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .specs-visual-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .specs-visual-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.spec-tile {
  background: white;
  padding: 1.5rem;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  gap: 1.25rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: transform 0.2s, box-shadow 0.2s;
}

.spec-tile:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--secondary);
}

.spec-tile.full-width {
  grid-column: 1 / -1;
  background: linear-gradient(to right, #ffffff, #f0f9ff);
  justify-content: center;
}

.spec-icon-box {
  width: 56px;
  height: 56px;
  background-color: #f1f5f9;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}

.spec-tile:hover .spec-icon-box {
  background-color: var(--primary);
  color: white;
}

.spec-info h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  color: var(--primary);
}

.spec-info p {
  font-size: 0.95rem;
  color: var(--text-body);
  margin-bottom: 0;
  line-height: 1.4;
}

/* --- FEATURES --- */
.features {
  background-color: var(--bg-main);
  padding: 6rem 0;
}

.features-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 5rem;
}

.features-header h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--primary);
}

.features-header p {
  font-size: 1.25rem;
  color: var(--text-body);
}

/* Triple Method Cards */
.tm-grid {
  display: grid;
  gap: 2rem;
  margin-bottom: 8rem;
}

@media (min-width: 768px) {
  .tm-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.tm-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: 2rem;
  padding: 3rem 2rem;
  text-align: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.tm-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

/* Specific hover accents for each card could go here, but keeping it unified for now */

.tm-icon-wrapper {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
  color: var(--secondary);
  box-shadow: 0 4px 6px -1px rgba(59, 130, 246, 0.2);
  transition: transform 0.3s ease;
}

.tm-card:hover .tm-icon-wrapper {
  transform: scale(1.1) rotate(5deg);
}

.tm-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--primary);
}

.tm-card p {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-body);
}

/* Split Section */
.features-split {
  display: grid;
  gap: 5rem;
  align-items: center;
}

@media (min-width: 968px) {
  .features-split {
    grid-template-columns: 1fr 1fr;
  }
}

.features-image-container {
  height: 100%;
  min-height: 150px;
  border-radius: 2rem;
  overflow: hidden;

  position: relative;
}

.features-image-container::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 2rem;
  border: 1px solid rgba(0, 0, 0, 0.1);
  pointer-events: none;
  z-index: 2;
}

.features-image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 2rem; /* Matches Hero */
  box-shadow: var(--shadow-md);
}

.feature-grid-small {
  display: grid;
  gap: 2.5rem;
}

@media (min-width: 640px) {
  .feature-grid-small {
    grid-template-columns: 1fr 1fr;
  }
}

.f-item {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
}

.f-icon-box {
  width: 48px;
  height: 48px;
  background: #fdf2f8; /* Very light pink/orange tint */
  color: var(--accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.f-item:hover .f-icon-box {
  background: var(--accent);
  color: white;
  transform: rotate(-5deg);
}

.f-content h4 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--primary);
}

.f-content p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* --- SCIENCE --- */
.science {
  background-color: var(--bg-alt);
}

/* Ensure header looks like standard section headers (gradient, centered) */
.science-text h2 {
  font-size: 2.25rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 2rem;
  background: linear-gradient(to right, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
  width: 100%;
}

/* Ensure content is vertically centered with image */
.science-container {
  display: grid;
  gap: 4rem;
  align-items: center; /* This handles 'content should be content movable' -> aligned with moving image */
}

/* Float animation for science image */
.science-image img {
  animation: float 6s ease-in-out infinite;
  animation-delay: 1.5s;
  width: 100%; /* Ensure they fit */
  margin-bottom: 0;
}

.science-image {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

@media (min-width: 968px) {
  .science-container {
    grid-template-columns: 1fr 1fr;
  }
}

.science-item {
  margin-bottom: 1.5rem;
  background: white;
  padding: 1.5rem;
  border-radius: var(--border-radius-sm);
  box-shadow: var(--shadow-sm);
}

.science-item h4 {
  color: var(--secondary);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.science-tip {
  background: #fff7ed;
  border-left: 5px solid var(--accent);
  padding: 2rem;
  border-radius: var(--border-radius-sm);
  margin-top: 2rem;
}

.science-tip h5 {
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

/* --- HOW TO USE --- */
.how-to {
  background-color: var(--bg-main);
  background-image: radial-gradient(#e2e8f0 1px, transparent 1px);
  background-size: 32px 32px; /* Subtle dot pattern */
}

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

.how-to-grid {
  display: grid;
  gap: 4rem;
}

@media (min-width: 968px) {
  .how-to-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.step-item {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2rem;
  position: relative;
}

/* Connecting line design */
.steps-list {
  position: relative;
}

.step-number {
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.25rem;
  flex-shrink: 0;
  z-index: 2;
  box-shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.3);
}

.safety-box {
  background: #fef2f2;
  border: 1px solid #fee2e2;
  border-radius: var(--border-radius);
  padding: 2rem;
}

.safety-box h3 {
  color: #dc2626;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.safety-list li {
  color: #b91c1c;
  margin-bottom: 0.5rem;
  padding-left: 1rem;
  position: relative;
}
.safety-list li::before {
  content: "•";
  position: absolute;
  left: 0;
}

/* --- REVIEWS --- */
.reviews {
  background-color: var(--bg-alt);
}

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

.reviews-grid {
  display: grid;
  gap: 2rem;
  margin-bottom: 3rem;
}

@media (min-width: 768px) {
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .reviews-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.review-card {
  background: white;
  padding: 2.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  height: 100%;
}

.review-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--secondary);
}

.review-stars {
  display: flex;
  gap: 4px;
  color: #fbbf24; /* Golden stars */
}

.review-text {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-heading);
  font-style: italic;
  flex-grow: 1;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--bg-alt);
}

.author-avatar {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.verified-badge {
  color: #059669;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* --- CLINICAL --- */
.clinical {
  background-color: var(--bg-main);
}

.clinical-grid {
  display: grid;
  gap: 2rem;
  margin-top: 3rem;
}

@media (min-width: 768px) {
  .clinical-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .clinical-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.clinical-card {
  background: white;
  padding: 2.5rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--border);
  border-top: 5px solid var(--secondary);
  text-align: left;
  transition: all 0.3s ease;
  height: 100%;
}

.clinical-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-top-color: var(--accent);
}

.clinical-source-tag {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  display: block;
}

.clinical-card h4 {
  margin-bottom: 1rem;
  color: var(--text-heading);
}

.clinical-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* --- CASE STUDIES --- */
.case-studies {
  background-color: var(--bg-alt);
}

.case-grid {
  display: grid;
  gap: 2rem;
  margin-bottom: 4rem;
}

@media (min-width: 768px) {
  .case-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.case-card {
  background: white;
  padding: 2.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.case-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}

.case-title {
  color: var(--accent);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.images-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, 1fr);
  margin-top: 3rem;
}

@media (min-width: 768px) {
  .images-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.before-after-img {
  text-align: center;
  position: relative;
  overflow: hidden;
  border-radius: var(--border-radius);
}

.before-after-img img {
  border-radius: var(--border-radius);
  margin-bottom: 0;
  transition: transform 0.5s cubic-bezier(0.23, 1, 0.32, 1);
  display: block;
}

.before-after-img:hover img {
  transform: scale(1.08);
}

.ba-label {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(15, 23, 42, 0.8);
  color: white;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  white-space: nowrap;
  pointer-events: none;
  backdrop-filter: blur(4px);
}

/* --- SOCIAL PROOF --- */
.social-proof {
  background-color: var(--bg-main);
  text-align: center;
}

.media-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 4rem;
  opacity: 0.8;
  transition: opacity 0.3s ease;
}

.media-logos:hover {
  opacity: 1;
}

.media-logos img {
  max-width: 100%;
  height: auto;
}

.endorsement-box {
  background: #f8fafc;
  padding: 3rem 2rem;
  border-radius: 2rem;
  max-width: 800px;
  margin: 0 auto;
  border: 1px dashed var(--border);
}

/* --- BENEFITS --- */
.benefits {
  background-color: var(--bg-alt);
}

.benefits-grid {
  display: grid;
  gap: 2rem;
  margin-bottom: 4rem;
}

@media (min-width: 768px) {
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.benefit-card {
  background: white;
  padding: 2.5rem;
  border-radius: var(--border-radius);
  border: 1px solid transparent;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.benefit-card:hover {
  border-color: var(--secondary);
  box-shadow: var(--shadow-md);
}

.benefit-icon {
  color: var(--accent);
  margin-bottom: 1.5rem;
}

/* --- SIZE GUIDE --- */
.size-guide {
  background-color: var(--bg-main);
}

.color-options {
  display: flex;
  gap: 2rem;
}

.swatch {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: 4px solid white;
  box-shadow: 0 0 0 2px var(--border);
  cursor: pointer;
  transition: transform 0.2s;
}

.swatch:hover {
  transform: scale(1.1);
}
.swatch.black {
  background: #111;
}
.swatch.gray {
  background: #9ca3af;
}

/* --- COMPARISON --- */
.comparison {
  background-color: var(--bg-alt);
}

.table-wrapper {
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  overflow-x: auto;
}

.comp-table {
  width: 100%;
  min-width: 700px; /* Ensure scroll on mobile */
  border-collapse: collapse;
}

.comp-table th {
  background: #f8fafc;
  padding: 1.5rem;
  text-align: center;
  color: var(--primary);
  font-weight: 700;
}

.comp-table td {
  padding: 1.25rem;
  text-align: center;
  border-top: 1px solid var(--border);
}

.comp-table .highlight {
  background: var(--bg-alt);
  color: var(--secondary-dark);
  font-weight: 700;
  border-left: 2px solid #a3e3c6;
  border-right: 2px solid #a3e3c6;
}

.comp-table tr:hover td {
  background-color: #f1f7f5;
}
.comp-table tr:hover td.highlight {
  background-color: #e6f2ee;
}

/* --- SHIPPING --- */
.shipping {
  background: white;
}

.shipping-box {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.shipping-item {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.shipping-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--secondary);
}

.shipping-icon-wrapper {
  background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
  color: #059669;
  width: 64px;
  height: 64px;
  min-width: 64px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 16px -4px rgba(5, 150, 105, 0.2);
  transition: all 0.3s ease;
}

.shipping-item:hover .shipping-icon-wrapper {
  transform: scale(1.1) rotate(5deg);
}

.shipping-content h4 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--primary);
}

.shipping-content p {
  color: var(--text-body);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* --- SPECIAL OFFER --- */
.special-offer {
  padding: 6rem 0;
  background: var(--bg-alt);
}

.offer-box {
  background: var(
    --bg-card
  ); /* Use standard white/card background instead of dark gradient */
  border-radius: 2.5rem;
  padding: 4rem 2rem;
  color: var(--text-body); /* Switch text color to standard body color */
  text-align: center;
  box-shadow: var(--shadow-small); /* Use lighter shadow */
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border); /* Add border for definition */
}

.offer-header h2 {
  color: var(
    --text-heading
  ); /* Switch header color to standard heading color */
  margin-bottom: 1rem;
}
.offer-text {
  color: var(--text-body); /* Switch subtext color */
  font-size: 1.25rem;
  margin-bottom: 3rem;
}

.offer-badges {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3rem;
}

.offer-badge {
  background: var(--bg-alt); /* Use light background for badges */
  color: var(--primary); /* Use primary color for text */
  padding: 0.75rem 1.5rem;
  border-radius: 2rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
}

.bonuses-grid {
  display: grid;
  gap: 2rem;
  margin: 3rem 0;
  text-align: left;
}

@media (max-width: 768px) {
  .bonuses-grid {
    text-align: center;
  }
}

@media (min-width: 768px) {
  .bonuses-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.bonus-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 2rem;
  border-radius: 1.5rem;
}

.bonus-tag {
  background: var(--accent);
  color: white;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  margin-bottom: 1rem;
  display: inline-block;
}

/* --- GUARANTEE --- */
.guarantee {
  background: white;
  text-align: center;
}

.guarantee-container {
  max-width: 700px;
  margin: 0 auto;
}

/* --- FAQ --- */
.faq {
  background-color: var(--bg-alt);
}

.faq-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .faq-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

.faq-item {
  background: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  padding: 1.5rem;
  text-align: left;
  background: none;
  border: none;
  font-weight: 600;
  font-size: 1rem;
  color: var(--primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: background 0.2s;
}

.faq-question:hover {
  background: #f8fafc;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 1.5rem;
  transition: all 0.3s ease;
}

.faq-item.active .faq-answer {
  padding-bottom: 1.5rem;
  max-height: 500px; /* Expand limit */
  color: var(--text-body);
}

.faq-icon {
  transition: transform 0.3s ease;
}
.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

/* --- SECURITY --- */
.security {
  padding: 4rem 0;
  border-top: 1px solid var(--border);
  background: white;
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
}
.security-flex {
  display: flex;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
  margin-top: 2rem;
  align-items: center;
}

.payment-methods img {
  height: 40px;
  width: auto;
  object-fit: contain;
  display: block;
}

/* --- ABOUT & CONTACT --- */
.about-brand,
.contact-support {
  background-color: var(--bg-alt);
}

.contact-container,
.about-content {
  display: grid;
  gap: 4rem;
}

@media (min-width: 968px) {
  .contact-container,
  .about-content {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
}

.contact-icon {
  background: var(--bg-alt);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  color: var(--secondary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-info {
  text-align: left;
}

@media (max-width: 768px) {
  .contact-info {
    text-align: center;
  }
}

.contact-info h2 {
  text-align: left;
  display: block;
}

@media (max-width: 768px) {
  .contact-info h2 {
    text-align: center;
  }
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
  text-align: left;
}

.contact-methods {
  margin: 3rem 0;
}

@media (max-width: 768px) {
  .contact-method {
    flex-direction: column;
    text-align: center;
    gap: 0.75rem;
  }
}

/* --- DETAILED SPECS --- */
.detailed-specs {
  background-color: var(--bg-main);
  padding: 6rem 0;
}

.detailed-header {
  text-align: center;
  margin-bottom: 4rem;
}
.detailed-header h2 {
  font-size: 2.25rem;
  color: var(--primary);
}

.detailed-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 968px) {
  .detailed-grid {
    grid-template-columns: 1fr 1fr;
    align-items: stretch;
  }
}

.build-card,
.tech-card {
  background: white;
  padding: 2.5rem;
  border-radius: 2rem;
  height: 100%;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
}

.build-card {
  background: linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%);
}

.build-card h3,
.tech-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--primary);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  padding-bottom: 1rem;
}

.build-card p {
  color: var(--text-body);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.material-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.mat-badge {
  background: white;
  border: 1px solid var(--border);
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-sm);
}

.tech-list {
  display: flex;
  flex-direction: column;
}

.tech-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

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

.t-label {
  font-weight: 600;
  color: var(--text-heading);
}

.t-value {
  text-align: right;
  color: var(--text-body);
}

.t-sub {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --- FOOTER --- */
.footer {
  background: var(--bg-dark);
  color: white;
  padding: 6rem 0 2.5rem;
}

.footer-content {
  display: grid;
  gap: 3rem;
  grid-template-columns: 2fr repeat(3, 1fr) 1.2fr;
}

@media (max-width: 1024px) {
  .footer-content {
    grid-template-columns: 1.5fr repeat(2, 1fr);
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  .footer-content {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-social,
  .social-icons {
    justify-content: center;
  }

  .footer-description {
    margin: 0 auto 1.5rem;
  }
}

.footer-logo {
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
}

@media (max-width: 480px) {
  .footer-logo {
    justify-content: center;
  }
}

.footer-logo img {
  display: block;
  max-width: 100%;
}

.footer-description {
  color: #94a3b8;
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 280px;
}

.footer-title {
  color: white;
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 2rem;
  position: relative;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 30px;
  height: 2px;
  background: var(--secondary);
}

@media (max-width: 480px) {
  .footer-title::after {
    left: 50%;
    transform: translateX(-50%);
  }
}

.footer-link {
  color: #94a3b8;
  transition: all 0.3s ease;
  display: inline-block;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.footer-link:hover {
  color: white;
  transform: translateX(5px);
}

.social-icons {
  display: flex;
  gap: 1rem;
}

.social-link {
  width: 42px;
  height: 42px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  color: #94a3b8;
}

.social-link:hover {
  background: var(--secondary);
  border-color: var(--secondary);
  color: white;
  transform: translateY(-5px);
  box-shadow: 0 10px 15px -3px rgba(37, 99, 235, 0.3);
}

.footer-bottom {
  margin-top: 5rem;
  padding-top: 2.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-bottom p {
  color: #64748b;
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* --- MOBILE STICKY CTA --- */
.mobile-cta-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  padding: 0.75rem 1.5rem;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
  z-index: 999;
  display: none; /* Hidden on desktop */
  justify-content: space-between;
  align-items: center;
  animation: slideUp 0.5s ease forwards;
}

@keyframes slideUp {
  from {
    transform: translateY(100%);
  }
  to {
    transform: translateY(0);
  }
}

@media (max-width: 768px) {
  .mobile-cta-bar {
    display: flex;
  }
}

.mobile-cta-text {
  display: flex;
  flex-direction: column;
}

.mobile-cta-price {
  font-weight: 800;
  color: var(--primary);
  font-size: 1.1rem;
}

.mobile-cta-discount {
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 600;
}

.mobile-cta-btn {
  padding: 0.6rem 1.2rem;
  font-size: 0.9rem;
}

.last-updated {
  background: var(--bg-card);
  padding: 1rem 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}

/* --- UTILITIES --- */
.img-responsive {
  display: block;
  width: 100%;
  height: auto;
}
/* UTILITY: Global Section Header Styling */
.section-header-centered {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 4rem;
  position: relative;
  z-index: 1;
}

.section-header-centered h2,
.specs-intro h2,
.features-header h2,
.detailed-header h2,
.how-to-header h2,
.reviews-header h2,
.clinical-header h2,
.case-header h2,
.proof-header h2,
.benefits-header h2,
.offer-header h2,
.size-text h2,
.comparison-header h2,
.guarantee-content h2,
.faq-header h2,
.security-content h3,
.contact-info h2,
.specs-intro h2 {
  font-size: clamp(1.75rem, 5vw, 2.5rem); /* Responsive headers */
  margin-bottom: 1rem;
  background: linear-gradient(to right, var(--primary), var(--secondary));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Force Left-aligned Grid Headers to Center as requested */
.about-text,
.size-text,
.science-text,
.security-content,
.clinical-header,
.case-header,
.proof-header,
.benefits-header,
.offer-header,
.comparison-header,
.guarantee-content,
.faq-header,
.specs-intro {
  text-align: center;
}

/* Ensure the H2s inside these containers are also centered if they weren't inheriting */
.about-text h2,
.size-text h2,
.science-text h2,
.detailed-header h2,
.specs-intro h2 {
  display: inline-block; /* Helps with gradient background clipping in center */
  width: 100%; /* Ensure it takes full width to be centered by parent */
  text-align: center; /* Explicitly center text within the full-width block */
  max-width: 100%;
}

/* Also ensure the detailed header container is correctly aligned */
.detailed-header {
  text-align: center;
  margin: 0 auto 4rem;
  width: 100%;
}
/* --- 404 PAGE --- */
.error-page {
  min-height: calc(
    100vh - var(--header-height) - 400px
  ); /* Adjust based on header/footer */
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 1rem;
  background-image: radial-gradient(var(--bg-alt) 2px, transparent 2px);
  background-size: 40px 40px;
}

.error-container {
  max-width: 600px;
  background: white;
  padding: 4rem 2rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border);
}

.error-code {
  font-size: 8rem;
  font-weight: 900;
  color: var(--secondary);
  line-height: 1;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
}

.error-title {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.error-message {
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  font-size: 1.1rem;
}

.error-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

@media (max-width: 480px) {
  .error-code {
    font-size: 5rem;
  }
  .error-title {
    font-size: 1.5rem;
  }
  .error-actions {
    flex-direction: column;
  }
}