/* --------------------------------------------------------------------------
   NuroClean Affiliate - Warm Editorial Utility-Clean System
   Workbook Row 15 | nurocleansolution.com
   -------------------------------------------------------------------------- */

:root {
  --color-stone: #FAF9F6;
  --color-slate-dark: #0F172A;
  --color-slate-main: #1F2937;
  --color-text: #1E293B;
  --color-text-light: #F8FAFC;
  --color-text-muted: #64748B;
  --color-text-muted-light: #94A3B8;
  --color-copper: #C85A32;
  --color-copper-hover: #A04322;
  --color-border: #CBD5E1;
  --color-border-dark: #334155;
  --color-white: #FFFFFF;
  
  --font-heading: system-ui, -apple-system, BlinkMacSystemFont, "Space Grotesk", "Segoe UI", sans-serif;
  --font-body: system-ui, -apple-system, BlinkMacSystemFont, "Work Sans", "Segoe UI", Roboto, sans-serif;
  
  --max-width: 1160px;
}

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

html {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-stone);
  scroll-behavior: smooth;
}

body {
  overflow-x: hidden;
  background-color: var(--color-stone);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-slate-main);
}

h1 {
  font-size: clamp(2rem, 4vw, 3.25rem);
  text-align: center;
  margin-bottom: 1.25rem;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1rem;
}

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

a {
  color: var(--color-copper);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Layout Containers */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-band {
  width: 100%;
  padding: 4.5rem 0;
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

.section-band.dark {
  background-color: var(--color-slate-dark);
  color: var(--color-text-light);
  border-bottom: 1px solid var(--color-border-dark);
}

.section-band.dark h1,
.section-band.dark h2,
.section-band.dark h3 {
  color: var(--color-white);
}

.section-band.dark p {
  color: var(--color-text-muted-light);
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 2px solid var(--color-copper);
  padding: 0.85rem 0;
}

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

.site-brand {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-white);
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-dot {
  width: 10px;
  height: 10px;
  background-color: var(--color-copper);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-link {
  color: var(--color-text-muted-light);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: var(--color-white);
  text-decoration: none;
}

.header-cta {
  display: inline-block;
  background-color: var(--color-copper);
  color: var(--color-white) !important;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.6rem 1.25rem;
  border: 1px solid var(--color-copper);
  border-radius: 0px;
  transition: background-color 0.2s ease;
}

.header-cta:hover {
  background-color: var(--color-copper-hover);
  text-decoration: none;
}

/* Kicker Badge */
.kicker-badge {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-copper);
  background-color: rgba(200, 90, 50, 0.08);
  border: 1px solid var(--color-copper);
  padding: 0.35rem 0.85rem;
  margin-bottom: 1.25rem;
  border-radius: 0px;
}

.dark .kicker-badge {
  background-color: rgba(200, 90, 50, 0.2);
}

/* Primary CTA Button */
.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-copper);
  color: var(--color-white) !important;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 1.1rem 2.25rem;
  border: 2px solid var(--color-copper);
  border-radius: 0px;
  cursor: pointer;
  width: 100%;
  max-width: 480px;
  text-align: center;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(200, 90, 50, 0.25);
}

.btn-cta:hover {
  background-color: var(--color-copper-hover);
  border-color: var(--color-copper-hover);
  text-decoration: none;
  transform: translateY(-1px);
}

/* Hero Section Specifics */
.hero-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 920px;
  margin: 0 auto;
}

.hero-intro {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  max-width: 780px;
  margin-bottom: 2rem;
}

.hero-visual-wrapper {
  width: 100%;
  max-width: 460px;
  margin: 1.5rem auto 2rem auto;
  border: 1px solid var(--color-border);
  background-color: var(--color-white);
  padding: 1rem;
  position: relative;
}

.hero-visual-wrapper img {
  width: 100%;
  height: auto;
  display: block;
}

.hero-bullets-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  text-align: left;
  margin-bottom: 2rem;
  width: 100%;
}

.hero-bullet-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--color-slate-main);
}

.bullet-icon {
  color: var(--color-copper);
  font-weight: bold;
  font-size: 1.1rem;
  line-height: 1;
}

.hero-proof-block {
  margin-top: 1.25rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  padding-top: 1rem;
  width: 100%;
  max-width: 680px;
}

/* Section Header Component */
.section-header {
  margin-bottom: 2.5rem;
}

.section-header.centered {
  text-align: center;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.copper-line {
  width: 60px;
  height: 3px;
  background-color: var(--color-copper);
  margin-bottom: 1.25rem;
}

.centered .copper-line {
  margin-left: auto;
  margin-right: auto;
}

/* Generic Grid & Card Components (Sharp 0px Outlined) */
.grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
}

.grid-2col-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.grid-3col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.utility-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 1.75rem;
  border-radius: 0px;
}

.dark .utility-card {
  background-color: #1E293B;
  border-color: var(--color-border-dark);
}

.card-visual {
  border: 1px solid var(--color-border);
  background-color: var(--color-white);
  margin-bottom: 1.25rem;
  overflow: hidden;
}

.card-visual img {
  width: 100%;
  height: auto;
  display: block;
}

/* Process Step Band */
.steps-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.step-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-copper);
  padding: 1.75rem;
  position: relative;
}

.step-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-copper);
  line-height: 1;
  margin-bottom: 0.75rem;
}

/* Stain / Demonstration Attribution Box */
.attribution-box {
  background-color: rgba(200, 90, 50, 0.05);
  border: 1px solid var(--color-copper);
  padding: 1rem 1.25rem;
  font-size: 0.85rem;
  color: var(--color-text);
  margin-top: 1rem;
}

.dark .attribution-box {
  background-color: rgba(200, 90, 50, 0.15);
  color: var(--color-text-light);
}

.expert-profile-card .attribution-box {
  color: #E2E8F0;
}

.expert-profile-card .attribution-box strong {
  color: #FFFFFF;
}

/* Ledger Tables (Comparison & Eco Savings) */
.ledger-table-wrapper {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  background-color: var(--color-white);
  margin-top: 1.5rem;
}

.ledger-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

.ledger-table th,
.ledger-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--color-border);
}

.ledger-table td {
  color: var(--color-slate-main);
}

.ledger-table th {
  font-family: var(--font-heading);
  background-color: var(--color-slate-main);
  color: var(--color-white);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.85rem;
}

.ledger-table tr:nth-child(even) {
  background-color: #F8FAFC;
}

.ledger-table th.highlight-col,
.ledger-table td.highlight-col {
  background-color: rgba(200, 90, 50, 0.06);
  border-left: 2px solid var(--color-copper);
  border-right: 2px solid var(--color-copper);
  font-weight: 600;
}

/* Expert / Specialist Block */
.expert-profile-card {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2rem;
  background-color: #1E293B;
  border: 1px solid var(--color-border-dark);
  border-left: 4px solid var(--color-copper);
  padding: 2rem;
  align-items: center;
}

.expert-img-frame {
  border: 1px solid var(--color-border-dark);
  width: 100%;
  max-width: 280px;
}

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

.expert-quote-text {
  font-style: italic;
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--color-text-light);
  margin-bottom: 1rem;
}

.expert-name {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  color: var(--color-copper);
  font-weight: 700;
}

.expert-title {
  font-size: 0.85rem;
  color: var(--color-text-muted-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Horizontal Package Rail (Row 15 Design Fingerprint) */
.package-rail-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}

.package-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 1.5rem 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

.package-card.best-value {
  border: 2px solid var(--color-copper);
  box-shadow: 0 6px 16px rgba(200, 90, 50, 0.15);
}

.badge-flag {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-copper);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.75rem;
  white-space: nowrap;
}

.badge-seller {
  background-color: var(--color-slate-main);
}

.pack-header {
  text-align: center;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 1rem;
  margin-bottom: 1rem;
}

.pack-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 0.25rem;
}

.pack-items-count {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 600;
}

.pack-pricing {
  text-align: center;
  margin-bottom: 1.25rem;
}

.unit-price-display {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-slate-main);
  line-height: 1;
}

.unit-price-basis {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.payable-total-row {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-copper);
  background-color: rgba(200, 90, 50, 0.06);
  padding: 0.4rem;
  border: 1px solid rgba(200, 90, 50, 0.2);
  margin-bottom: 0.5rem;
}

.regular-price-strike {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  text-decoration: line-through;
}

.savings-pill {
  font-size: 0.8rem;
  font-weight: 700;
  color: #166534;
  background-color: #DCFCE7;
  padding: 0.15rem 0.5rem;
  display: inline-block;
  margin-top: 0.25rem;
}

.pack-details-list {
  list-style: none;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
  border-top: 1px solid var(--color-border);
  padding-top: 0.75rem;
}

.pack-details-list li {
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.pack-cta-btn {
  display: block;
  width: 100%;
  background-color: var(--color-copper);
  color: var(--color-white) !important;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 0.85rem 0.5rem;
  border: 1px solid var(--color-copper);
  border-radius: 0px;
  text-align: center;
  transition: background-color 0.2s ease;
}

.pack-cta-btn:hover {
  background-color: var(--color-copper-hover);
  text-decoration: none;
}

/* Open FAQ Index (Row 15 Design Fingerprint) */
.faq-index-grid {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 2rem;
}

.faq-item-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-copper);
  padding: 1.5rem;
}

.faq-question-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-slate-main);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.faq-q-badge {
  background-color: var(--color-copper);
  color: var(--color-white);
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.15rem 0.4rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.faq-answer-body {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.65;
  padding-left: 2rem;
}

/* Bottom CTA / Offer Section */
.bottom-cta-box {
  background-color: var(--color-slate-dark);
  border: 2px solid var(--color-copper);
  padding: 3rem 2rem;
  text-align: center;
  color: var(--color-white);
  margin-top: 3rem;
}

/* Site Footer */
.site-footer {
  background-color: #090D16;
  color: var(--color-text-muted-light);
  padding: 3.5rem 0 2rem 0;
  border-top: 1px solid var(--color-border-dark);
  font-size: 0.85rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.footer-nav a {
  color: var(--color-text-muted-light);
  font-weight: 600;
}

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

.disclaimer-box {
  border: 1px solid var(--color-border-dark);
  padding: 1.25rem;
  background-color: rgba(255, 255, 255, 0.03);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.copyright-text {
  text-align: center;
  color: var(--color-text-muted-light);
  font-size: 0.8rem;
}

/* Responsive Rules & Mobile Hero Binding Order */
@media (max-width: 900px) {
  .package-rail-container {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .expert-profile-card {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .expert-img-frame {
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  .site-nav {
    display: none;
  }
  
  .header-cta {
    display: none !important; /* Hide header CTA on mobile as per requirement */
  }
  
  .grid-2col,
  .grid-2col-cards,
  .grid-3col,
  .steps-container {
    grid-template-columns: 1fr;
  }

  .package-rail-container {
    grid-template-columns: 1fr;
  }
  
  .hero-bullets-grid {
    grid-template-columns: 1fr;
  }

  /* Binding Mobile Hero Order:
     1. intro/H1 -> 2. visual -> 3. primary CTA -> 4. proof -> 5. feature bullets */
  .hero-stage {
    display: flex;
    flex-direction: column;
  }

  .hero-stage .kicker-badge { order: 1; }
  .hero-stage h1 { order: 2; }
  .hero-stage .hero-intro { order: 3; margin-bottom: 1rem; }
  .hero-stage .hero-visual-wrapper { order: 4; margin: 1rem 0; }
  .hero-stage .btn-cta { order: 5; margin: 0 auto; }
  .hero-stage .hero-proof-block { order: 6; margin-top: 1rem; margin-bottom: 1.5rem; }
  .hero-stage .hero-bullets-grid { order: 7; margin-top: 1rem; }

  .ledger-table-wrapper { overflow: visible; border: 0; }
  .ledger-table,
  .ledger-table tbody,
  .ledger-table tr,
  .ledger-table td { display: block; width: 100%; }
  .ledger-table thead { display: none; }
  .ledger-table tr {
    margin-bottom: 1rem;
    border: 1px solid var(--color-border-dark);
    background: #FFFFFF !important;
  }
  .ledger-table td {
    padding: 0.8rem 1rem;
    border: 0;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-slate-main);
    font-size: 0.92rem;
    line-height: 1.5;
  }
  .ledger-table td:first-child {
    background: var(--color-slate-main);
    color: #FFFFFF;
  }
  .ledger-table td.highlight-col {
    border-left: 3px solid var(--color-copper);
    border-right: 0;
  }
}