/* Design System & CSS Variables for Fizzclean Fresh Aqua-Foam Hydro-Hygiene Interface */
:root {
  --primary-dark: #0c1b33;
  --secondary-dark: #152a4a;
  --accent-aqua: #00b4d8;
  --accent-turq: #48cae4;
  --cta-blue: #0077b6;
  --cta-hover: #0096c7;
  --background-light: #f0f8ff;
  --card-surface: #ffffff;
  --text-dark: #081225;
  --text-muted: #4a5d78;
  --border-aqua: #d0e8f2;
  --shadow-hydro: 0 8px 24px rgba(12, 27, 51, 0.06);
  --shadow-elevated: 0 12px 32px rgba(12, 27, 51, 0.12);
  --font-stack: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius-container: 12px;
  --radius-control: 8px;
  --radius-frame: 16px;
  --max-width: 1140px;
  --prose-width: 720px;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-stack);
  background-color: var(--background-light);
  color: var(--text-dark);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
}

/* Typography & Links */
h1, h2, h3, h4, h5, h6 {
  color: var(--primary-dark);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

p {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 1rem;
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--cta-blue);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--cta-hover);
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-aqua);
  box-shadow: 0 2px 12px rgba(12, 27, 51, 0.04);
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-text {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: -0.02em;
}

.logo-tagline {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-aqua);
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  font-size: 0.925rem;
  font-weight: 600;
  color: var(--text-muted);
}

.nav-links a:hover {
  color: var(--cta-blue);
}

.header-cta-btn {
  background: var(--cta-blue);
  color: #ffffff !important;
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-control);
  transition: background-color 0.2s ease, transform 0.1s ease;
}

.header-cta-btn:hover {
  background: var(--cta-hover);
  transform: translateY(-1px);
}

/* Layout Containers & Section Rhythm */
.section-wrapper {
  padding: 4.5rem 1.5rem;
}

.bg-white {
  background-color: var(--card-surface);
}

.bg-aqua-ice {
  background-color: var(--background-light);
}

.bg-ocean-indigo {
  background-color: var(--primary-dark);
  color: #ffffff;
}

.bg-ocean-indigo h2, .bg-ocean-indigo h3 {
  color: #ffffff;
}

.bg-ocean-indigo p {
  color: #a0aec0;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.prose-container {
  max-width: var(--prose-width);
  margin: 0 auto;
}

.section-header-block {
  text-align: center;
  max-width: var(--prose-width);
  margin: 0 auto 3rem auto;
}

.section-badge {
  display: inline-block;
  background: #e0f2fe;
  color: var(--cta-blue);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.35rem 0.85rem;
  border-radius: 50px;
  margin-bottom: 0.75rem;
}

.section-header-block h2 {
  font-size: 2.25rem;
  margin-bottom: 0.75rem;
}

/* Primary Hero Architecture (Offset Hydro-Column) */
.hero-section {
  padding: 3.5rem 1.5rem 4.5rem 1.5rem;
  background: linear-gradient(180deg, #ffffff 0%, var(--background-light) 100%);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 240px 1fr 380px;
  gap: 2rem;
  align-items: center;
}

.hero-evidence-rail {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.evidence-pill {
  background: #ffffff;
  border: 1px solid var(--border-aqua);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-container);
  box-shadow: var(--shadow-hydro);
}

.evidence-pill-title {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--cta-blue);
  text-transform: uppercase;
  margin-bottom: 0.2rem;
}

.evidence-pill-text {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-dark);
  margin: 0;
}

.hero-stage-container {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-visual-frame {
  width: 100%;
  max-width: 440px;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-frame);
  overflow: hidden;
  box-shadow: var(--shadow-elevated);
  background: #ffffff;
  border: 1px solid var(--border-aqua);
}

.hero-visual-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero-purchase-dock {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.hero-eyebrow {
  display: inline-block;
  background: rgba(0, 180, 216, 0.12);
  color: var(--cta-blue);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.35rem 0.85rem;
  border-radius: 50px;
  align-self: flex-start;
}

.hero-heading {
  font-size: 2.5rem;
  letter-spacing: -0.02em;
}

.hero-intro {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.primary-cta-button {
  display: block;
  width: 100%;
  text-align: center;
  background: var(--cta-blue);
  color: #ffffff !important;
  font-size: 1.1rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 1.1rem 1.5rem;
  border-radius: var(--radius-control);
  box-shadow: 0 4px 16px rgba(0, 119, 182, 0.3);
  transition: all 0.2s ease;
}

.primary-cta-button:hover {
  background: var(--cta-hover);
  box-shadow: 0 6px 20px rgba(0, 150, 199, 0.4);
  transform: translateY(-2px);
}

.hero-proof-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #ffffff;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-container);
  border: 1px solid var(--border-aqua);
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--text-muted);
}

/* Card Component Styles */
.card-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.card-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.hydro-card {
  background: var(--card-surface);
  border: 1px solid var(--border-aqua);
  border-radius: var(--radius-container);
  padding: 2rem;
  box-shadow: var(--shadow-hydro);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.hydro-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-elevated);
}

.card-icon-badge {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(0, 180, 216, 0.1);
  color: var(--cta-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.25rem;
  margin-bottom: 1.25rem;
}

.card-title {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}

/* Split Visual + Content Blocks */
.split-media-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.split-media-frame {
  width: 100%;
  border-radius: var(--radius-frame);
  overflow: hidden;
  border: 1px solid var(--border-aqua);
  box-shadow: var(--shadow-hydro);
}

.split-media-frame img {
  width: 100%;
  height: auto;
  display: block;
}

/* 3-Step Filmstrip Section */
.filmstrip-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.filmstrip-card {
  background: var(--card-surface);
  border: 1px solid var(--border-aqua);
  border-radius: var(--radius-container);
  padding: 1.75rem;
  box-shadow: var(--shadow-hydro);
}

.filmstrip-badge {
  display: inline-block;
  background: var(--cta-blue);
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 800;
  padding: 0.35rem 0.85rem;
  border-radius: 50px;
  margin-bottom: 1rem;
}

/* Surface Atlas Grid */
.surface-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}

.surface-tile {
  background: var(--card-surface);
  border: 1px solid var(--border-aqua);
  border-radius: var(--radius-container);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* Expert Editorial Quote Block */
.expert-quote-card {
  background: var(--card-surface);
  border: 1px solid var(--border-aqua);
  border-radius: var(--radius-frame);
  padding: 2.5rem;
  box-shadow: var(--shadow-elevated);
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2.5rem;
  align-items: center;
}

.expert-portrait-frame {
  width: 240px;
  height: 240px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid var(--background-light);
  box-shadow: 0 8px 20px rgba(12, 27, 51, 0.1);
}

.expert-portrait-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.quote-body {
  font-size: 1.15rem;
  font-style: italic;
  color: var(--primary-dark);
  line-height: 1.7;
  margin-bottom: 1.25rem;

}

.expert-meta h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary-dark);
}

.expert-meta p {
  font-size: 0.9rem;
  color: var(--cta-blue);
  font-weight: 600;
}

/* Comparison Table */
.table-responsive-wrapper {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-container);
  border: 1px solid var(--border-aqua);
  box-shadow: var(--shadow-hydro);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: #ffffff;
  text-align: left;
}

.comparison-table th, .comparison-table td {
  padding: 1.1rem 1.5rem;
  border-bottom: 1px solid var(--border-aqua);
  font-size: 0.95rem;
}

.comparison-table th {
  background: var(--secondary-dark);
  color: #ffffff;
  font-weight: 700;
}

.comparison-table th:first-child {
  border-top-left-radius: var(--radius-container);
}

.comparison-table th:last-child {
  border-top-right-radius: var(--radius-container);
}

.comparison-table tr:hover {
  background: #f8fafc;
}

.check-mark {
  color: #10b981;
  font-weight: 800;
  font-size: 1.2rem;
}

.cross-mark {
  color: #ef4444;
  font-weight: 800;
  font-size: 1.2rem;
}

/* Safety & Care Split */
.safety-box {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-container);
  padding: 2rem;
}

/* Offer & Guarantee Dock */
.offer-dock-card {
  background: linear-gradient(135deg, #ffffff 0%, #f0f8ff 100%);
  border: 2px solid var(--accent-aqua);
  border-radius: var(--radius-frame);
  padding: 3rem;
  text-align: center;
  box-shadow: var(--shadow-elevated);
}

.offer-badge {
  display: inline-block;
  background: var(--cta-blue);
  color: #ffffff;
  font-size: 1rem;
  font-weight: 800;
  padding: 0.5rem 1.5rem;
  border-radius: 50px;
  margin-bottom: 1.5rem;
}

.offer-dock-card h3 {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}

/* Stepped FAQ Section */
.faq-accordion-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  background: var(--card-surface);
  border: 1px solid var(--border-aqua);
  border-radius: var(--radius-container);
  overflow: hidden;
  box-shadow: var(--shadow-hydro);
}

.faq-header {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 1.25rem 1.75rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary-dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-family: inherit;
}

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

.faq-header:focus-visible {
  outline: 2px solid var(--cta-blue);
  outline-offset: -2px;
}

.faq-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--cta-blue);
  transition: transform 0.2s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 1.75rem;
}

.faq-item.active .faq-content {
  max-height: 300px;
  padding: 0 1.75rem 1.5rem 1.75rem;
}

.faq-answer {
  color: var(--text-dark);
  font-size: 1rem;
  line-height: 1.6;
}

.faq-evidence-tag {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--cta-blue);
  background: rgba(0, 180, 216, 0.1);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

/* Footer */
.site-footer {
  background: var(--primary-dark);
  color: #a0aec0;
  padding: 4rem 1.5rem 2rem 1.5rem;
  border-top: 1px solid var(--secondary-dark);
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.logo-text-footer {
  font-size: 1.8rem;
  font-weight: 800;
  color: #ffffff;
  display: block;
  margin-bottom: 0.75rem;
}

.footer-links-col h4 {
  color: #ffffff;
  font-size: 1rem;
  margin-bottom: 1rem;
}

.footer-links-col a {
  display: block;
  color: #a0aec0;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.footer-links-col a:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  text-align: center;
  font-size: 0.85rem;
}

/* Legal Pages Styling */
.legal-page-container {
  max-width: 900px;
  margin: 3rem auto;
  padding: 0 1.5rem;
}

.legal-content-box {
  background: #ffffff;
  border: 1px solid var(--border-aqua);
  border-radius: var(--radius-frame);
  padding: 3rem;
  box-shadow: var(--shadow-hydro);
}

.legal-content-box h1 {
  font-size: 2.25rem;
  margin-bottom: 0.5rem;
}

.effective-date {
  font-size: 0.875rem;
  color: var(--cta-blue);
  font-weight: 600;
  margin-bottom: 2rem;
}

.legal-section {
  margin-bottom: 2rem;
}

.legal-section h2 {
  font-size: 1.4rem;
  margin-bottom: 0.75rem;
}

.contact-details-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.contact-card {
  background: var(--background-light);
  border: 1px solid var(--border-aqua);
  border-radius: var(--radius-container);
  padding: 1.5rem;
}

.contact-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.contact-link {
  font-weight: 700;
  word-break: break-all;
}

.contact-cta-btn {
  display: inline-block;
  margin-top: 1rem;
  background: var(--cta-blue);
  color: #ffffff !important;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-control);
  font-size: 0.85rem;
  font-weight: 700;
}

/* Responsive Breakpoints & Mobile Hero Order Contract */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .split-media-block {
    grid-template-columns: minmax(0, 1fr);
    gap: 1.5rem;
  }

  .split-media-block > * {
    min-width: 0;
  }

  .card-grid-3, .filmstrip-grid, .surface-grid, .card-grid-2 {
    grid-template-columns: 1fr;
  }

  .expert-quote-card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .expert-portrait-frame {
    margin: 0 auto;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

/* Binding Mobile Hero Order: Eyebrow/H1/Intro -> 1 Authentic Image -> Primary CTA -> Compact Proof */
@media (max-width: 768px) {
  .nav-links {
    display: none; /* Hide header navigation links on mobile */
  }

  .hero-section {
    padding: 2rem 1rem;
  }

  .hero-grid {
    display: flex;
    flex-direction: column;
  }

  .hero-purchase-dock {
    display: contents;
  }

  /* Explicit Mobile Hero Display Order */
  .hero-dock-intro-group {
    order: 1;
  }

  .hero-stage-container {
    order: 2;
    margin: 1.25rem 0;
  }

  .hero-dock-cta-group {
    order: 3;
    width: 100%;
  }

  .hero-proof-bar {
    order: 4;
    width: 100%;
    margin-top: 1rem;
  }

  .hero-evidence-rail {
    order: 5;
    margin-top: 1.5rem;
  }

  .table-responsive-wrapper {
    overflow-x: visible;
  }

  .comparison-table {
    table-layout: fixed;
    width: 100%;
  }

  .comparison-table th,
  .comparison-table td {
    padding: 0.55rem 0.35rem;
    font-size: 0.72rem;
    line-height: 1.3;
    overflow-wrap: anywhere;
    word-break: normal;
  }

  .comparison-table th:first-child,
  .comparison-table td:first-child {
    width: 36%;
  }

  .comparison-table th:nth-child(2),
  .comparison-table td:nth-child(2),
  .comparison-table th:nth-child(3),
  .comparison-table td:nth-child(3) {
    width: 32%;
  }

  .hero-heading {
    font-size: 1.85rem;
  }

  .section-header-block h2 {
    font-size: 1.65rem;
  }
}

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