/* ==========================================================================
   Microdetox.info - Design System D-0049A4-01
   Archetype: Content Sales Funnel
   Layout: Wide Editorial
   Navigation: Sidebar Reference
   Typography: Classical Serif
   Color System: Deep Teal
   ========================================================================== */

/* Google Fonts Import: Sarabun (Clean Thai/Latin) and Playfair Display (Serif) */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400&family=Sarabun:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&display=swap');

:root {
  /* Design System Typography Tokens */
  --font-sans: 'Sarabun', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Playfair Display', 'Merriweather', 'Sarabun', Georgia, serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Color Palette - Deep Teal */
  --color-bg: #F0F4F4;
  --color-surface: #FFFFFF;
  --color-text-primary: #0F2929;
  --color-text-secondary: #4D6666;
  --color-accent: #0F766E;
  --color-border: #CCE0E0;
  --color-muted-bg: #E0EBEB;
  --color-interactive: #115E59;
  --color-interactive-hover: #0d4a46;
  --color-accent-light: #e6f4f2;
  --color-warning: #b45309;
  --color-success: #047857;

  /* Typography Scales */
  --text-h1: 3.25rem;
  --lh-h1: 1.15;
  --text-h2: 2.5rem;
  --lh-h2: 1.15;
  --text-h3: 1.75rem;
  --lh-h3: 1.15;
  --text-body: 1.125rem;
  --lh-body: 1.7;

  /* Spacing Tokens */
  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4.5rem;

  /* Layout Dimensions */
  --sidebar-width: 290px;
  --content-max-width: 1140px;
  --text-max-width: 70ch;
  --header-mobile-height: 64px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --transition-fast: 0.18s ease-in-out;
  --transition-normal: 0.25s ease-in-out;
}

/* 1. Global Reset & Box Model */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

html, body {
  overflow-x: hidden;
  width: 100%;
  min-height: 100vh;
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-serif);
  font-size: var(--text-body);
  line-height: var(--lh-body);
  font-weight: 400;
}

/* Thai typographic readability helper */
:lang(th) {
  word-break: break-word;
  overflow-wrap: break-word;
  line-break: loose;
}

/* Accessibility: Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-md);
  background: var(--color-accent);
  color: #ffffff;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-sm);
  z-index: 9999;
  font-family: var(--font-sans);
  font-weight: 600;
  text-decoration: none;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-md);
  outline: 3px solid var(--color-interactive-hover);
}

/* Focus styles for keyboard navigation */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* 2. Canonical Semantic Tags Global Layout */
body {
  display: flex;
  flex-direction: row;
  min-height: 100vh;
}

/* Layout Wide Editorial + Nav Sidebar Reference: Left Sidebar */
header {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background-color: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
  padding: var(--space-xl) var(--space-lg);
}

/* Content Container Wrapper */
.layout-wrapper {
  margin-left: var(--sidebar-width);
  width: calc(100% - var(--sidebar-width));
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg);
}

main {
  flex: 1 0 auto;
  width: 100%;
}

footer {
  flex-shrink: 0;
  width: 100%;
  background-color: var(--color-muted-bg);
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) var(--space-2xl);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

/* 3. Header & Navigation Component */
.brand-identity {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.brand-logo-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--color-text-primary);
}

.brand-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.brand-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  line-height: 1.1;
}

.brand-tagline {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-top: var(--space-2xs);
}

nav {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  gap: var(--space-lg);
}

.nav-group-title {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  font-weight: 700;
  margin-bottom: var(--space-xs);
  padding-left: var(--space-xs);
}

.nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.55rem var(--space-xs);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  text-decoration: none;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.nav-link:hover {
  background-color: var(--color-muted-bg);
  color: var(--color-interactive);
}

.nav-link.active {
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  font-weight: 600;
  border-left: 3px solid var(--color-accent);
}

.nav-link svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
  flex-shrink: 0;
}

.sidebar-cta-wrap {
  margin-top: auto;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

/* Mobile Header Topbar */
.mobile-topbar {
  display: none;
}

/* 4. Typography Rules */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  color: var(--color-text-primary);
  font-weight: 600;
}

h1 {
  font-size: var(--text-h1);
  line-height: var(--lh-h1);
  margin-bottom: var(--space-lg);
}

h2 {
  font-size: var(--text-h2);
  line-height: var(--lh-h2);
  margin-bottom: var(--space-md);
}

h3 {
  font-size: var(--text-h3);
  line-height: var(--lh-h3);
  margin-bottom: var(--space-sm);
}

p {
  margin-bottom: var(--space-md);
  max-width: var(--text-max-width);
}

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

/* 5. Section System: Sections Longform Flow */
section {
  padding: var(--space-3xl) var(--space-2xl);
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

section:nth-child(even) {
  background-color: var(--color-surface);
}

section:nth-child(odd) {
  background-color: var(--color-bg);
}

.section-inner {
  max-width: var(--content-max-width);
  margin: 0 auto;
}

.section-inner-reading {
  max-width: 800px;
  margin: 0 auto;
}

.section-header {
  margin-bottom: var(--space-2xl);
}

.section-eyebrow {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  background-color: var(--color-accent-light);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-sm);
}

.section-lead {
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  max-width: var(--text-max-width);
}

/* 6. Hero System: Hero Minimal Title */
.hero-minimal {
  padding: var(--space-3xl) var(--space-2xl) var(--space-2xl);
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-surface);
}

.hero-minimal h1 {
  font-size: var(--text-h1);
  line-height: var(--lh-h1);
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-top: var(--space-md);
}

.hero-meta-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
}

/* 7. Grid Modular 12 & Layout Utilities */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-xl);
}

.col-12 { grid-column: span 12; }
.col-8 { grid-column: span 8; }
.col-6 { grid-column: span 6; }
.col-4 { grid-column: span 4; }
.col-3 { grid-column: span 3; }

.grid-cards-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

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

.grid-cards-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

/* 8. Card System: Cards Flat Editorial */
.card-flat {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

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

.card-tag {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.card-title {
  font-size: 1.375rem;
  line-height: 1.3;
  margin-bottom: var(--space-sm);
}

.card-text {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  flex-grow: 1;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  margin-top: auto;
}

.card-link:hover {
  color: var(--color-interactive-hover);
  text-decoration: underline;
}

/* 9. Article System: Article Structured Guide */
.reading-meta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  padding: var(--space-md) var(--space-lg);
  background-color: var(--color-muted-bg);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-2xl);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.toc-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.toc-title {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding-left: var(--space-xs);
}

.toc-list a {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--color-interactive);
  text-decoration: none;
}

.toc-list a:hover {
  text-decoration: underline;
}

.editorial-content h2 {
  font-size: 2rem;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.editorial-content h3 {
  font-size: 1.5rem;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.editorial-content ul, .editorial-content ol {
  margin-bottom: var(--space-lg);
  padding-left: var(--space-xl);
  font-size: 1.0625rem;
  line-height: 1.7;
}

.editorial-content li {
  margin-bottom: var(--space-xs);
}

.pull-quote {
  font-style: italic;
  font-size: 1.375rem;
  line-height: 1.5;
  color: var(--color-interactive);
  border-left: 3px solid var(--color-accent);
  padding: var(--space-md) var(--space-xl);
  margin: var(--space-2xl) 0;
  background-color: var(--color-accent-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.pull-quote cite {
  display: block;
  font-style: normal;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

.callout-box {
  background-color: var(--color-muted-bg);
  border-left: 4px solid var(--color-interactive);
  padding: var(--space-lg);
  margin: var(--space-xl) 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.callout-title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.0625rem;
  margin-bottom: var(--space-xs);
  color: var(--color-text-primary);
}

/* 10. Practical Advice Checklist & Key Takeaways Module */
.article-takeaways-module {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2xl);
  margin: var(--space-3xl) 0 var(--space-2xl);
}

.takeaways-heading {
  font-size: 1.75rem;
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-text-primary);
}

.takeaway-checklist {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.takeaway-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md);
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.takeaway-icon {
  width: 24px;
  height: 24px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.takeaway-text h4 {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.takeaway-text p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* 11. Conversion Bridge Block (Блок-міст) */
.conversion-bridge-block {
  background: linear-gradient(135deg, #0F2929 0%, #0F766E 100%);
  color: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: var(--space-2xl) var(--space-2xl);
  margin: var(--space-3xl) 0 var(--space-2xl);
  position: relative;
  overflow: hidden;
}

.conversion-bridge-inner {
  max-width: 720px;
}

.bridge-eyebrow {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #A7F3D0;
  background: rgba(255, 255, 255, 0.12);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
}

.bridge-title {
  color: #FFFFFF;
  font-size: 2.125rem;
  line-height: 1.25;
  margin-bottom: var(--space-md);
}

.bridge-description {
  color: #E0EBEB;
  font-size: 1.125rem;
  line-height: 1.6;
  margin-bottom: var(--space-xl);
}

.bridge-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.bridge-feature-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: #F0FDF4;
}

.bridge-feature-item svg {
  width: 18px;
  height: 18px;
  stroke: #34D399;
  flex-shrink: 0;
}

.btn-bridge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  background-color: #FFFFFF;
  color: #0F2929;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  font-weight: 700;
  padding: 0.9rem 1.8rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  min-height: 48px;
  min-width: 48px;
  transition: all var(--transition-fast);
}

.btn-bridge:hover {
  background-color: #F0FDF4;
  color: var(--color-interactive-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* 12. Button & CTA System: Cta Minimal */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  min-height: 44px;
  min-width: 44px;
  transition: all var(--transition-fast);
}

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

.btn-primary:hover {
  background-color: var(--color-interactive-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-muted-bg);
  border-color: var(--color-accent);
}

.btn-block {
  width: 100%;
}

/* 13. Comparison Tables & Data Presentation */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: var(--space-xl) 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  text-align: left;
}

th, td {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

th {
  background-color: var(--color-muted-bg);
  color: var(--color-text-primary);
  font-weight: 700;
}

tr:last-child td {
  border-bottom: none;
}

/* 14. Interactive Checklist Styling */
.interactive-checklist-box {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
}

.check-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
  cursor: pointer;
}

.check-item:last-child {
  border-bottom: none;
}

.check-input {
  width: 22px;
  height: 22px;
  margin-top: 3px;
  accent-color: var(--color-accent);
  cursor: pointer;
  flex-shrink: 0;
}

.check-label {
  cursor: pointer;
  user-select: none;
  font-size: 1.0625rem;
}

.check-label small {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

.score-display-panel {
  background-color: var(--color-muted-bg);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  margin-top: var(--space-2xl);
  border: 1px solid var(--color-border);
}

/* 15. FAQ Accordion Pattern (<details>) */
.faq-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin: var(--space-xl) 0;
}

details {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-md) var(--space-lg);
  transition: border-color var(--transition-fast);
}

details[open] {
  border-color: var(--color-accent);
}

summary {
  font-family: var(--font-sans);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: var(--space-xl);
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--color-accent);
  transition: transform var(--transition-fast);
}

details[open] summary::after {
  content: '−';
}

details p {
  margin-top: var(--space-md);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
  font-size: 1rem;
  color: var(--color-text-secondary);
}

/* 16. Order Page & Packages */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin: var(--space-2xl) 0;
}

.pricing-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.pricing-card.featured {
  border: 2px solid var(--color-accent);
  box-shadow: 0 4px 20px rgba(15, 118, 110, 0.12);
  transform: scale(1.02);
}

.badge-popular {
  position: absolute;
  top: -12px;
  right: var(--space-lg);
  background-color: var(--color-accent);
  color: #FFFFFF;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}

.package-name {
  font-size: 1.5rem;
  margin-bottom: var(--space-2xs);
}

.package-duration {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.package-price-wrap {
  margin: var(--space-md) 0;
  display: flex;
  align-items: baseline;
  gap: var(--space-xs);
}

.price-current {
  font-family: var(--font-sans);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.price-original {
  font-family: var(--font-sans);
  font-size: 1.125rem;
  text-decoration: line-through;
  color: var(--color-text-secondary);
}

.package-benefits {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin: var(--space-lg) 0 var(--space-xl);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
}

.package-benefits li {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.package-benefits svg {
  width: 16px;
  height: 16px;
  stroke: var(--color-accent);
  flex-shrink: 0;
}

/* 17. Form Design & Inputs */
.order-form-box {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2xl);
  margin-top: var(--space-2xl);
}

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

label {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--color-text-primary);
}

input[type="text"],
input[type="tel"],
input[type="email"],
select,
textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

input:focus,
select:focus,
textarea:focus {
  background-color: #FFFFFF;
  border-color: var(--color-accent);
  outline: none;
}

.form-feedback {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: var(--color-warning);
  margin-top: 4px;
}

/* Guarantee / Trust Badges */
.trust-badges-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin: var(--space-2xl) 0;
}

.trust-badge-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.trust-badge-icon {
  width: 32px;
  height: 32px;
  stroke: var(--color-accent);
  flex-shrink: 0;
}

.trust-badge-info h4 {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 700;
}

.trust-badge-info p {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* Image styling - Single Key Asset */
.key-product-image {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  display: block;
  object-fit: cover;
}

/* 18. Footer Component (footer-minimal) */
footer .footer-container {
  max-width: var(--content-max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  list-style: none;
}

.footer-nav a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-nav a:hover {
  color: var(--color-accent);
}

.footer-disclaimer {
  width: 100%;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--color-text-secondary);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

/* 19. Responsive Behavior & Mobile Compact Reference */
@media (max-width: 1024px) {
  :root {
    --sidebar-width: 250px;
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .grid-cards-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  body {
    flex-direction: column;
  }

  /* Mobile compact topbar */
  .mobile-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-mobile-height);
    padding: 0 var(--space-md);
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    width: 100%;
  }

  .mobile-brand {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    text-decoration: none;
    color: var(--color-text-primary);
    font-weight: 700;
    font-size: 1.25rem;
  }

  .mobile-toggle-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-primary);
    min-height: 44px;
    min-width: 44px;
  }

  /* Sidebar becomes full screen slide-out drawer on mobile */
  header {
    position: fixed;
    top: 0;
    left: -100%;
    width: 85%;
    max-width: 320px;
    height: 100vh;
    background-color: var(--color-surface);
    transition: left var(--transition-normal);
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.15);
    z-index: 2000;
    padding: var(--space-lg);
  }

  header.active {
    left: 0;
  }

  .mobile-nav-backdrop {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1999;
  }

  .mobile-nav-backdrop.active {
    display: block;
  }

  .layout-wrapper {
    margin-left: 0;
    width: 100%;
  }

  section {
    padding: var(--space-2xl) var(--space-md);
  }

  .hero-minimal {
    padding: var(--space-2xl) var(--space-md) var(--space-xl);
  }

  h1 {
    font-size: 2.25rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  h3 {
    font-size: 1.35rem;
  }

  .grid-12, .grid-cards-2, .grid-cards-3, .grid-cards-4, .trust-badges-row {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .col-12, .col-8, .col-6, .col-4, .col-3 {
    grid-column: span 1;
  }

  footer {
    padding: var(--space-xl) var(--space-md);
  }

  footer .footer-container {
    flex-direction: column;
    align-items: flex-start;
  }
}

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