/* ============================================================
   sofacovers.in — SofaCovers India
   Design System & Master Stylesheet
   An initiative by Emm Emm Velvet (Est. 1995, Panipat)
   ============================================================ */

/* ── Custom Properties & Tokens ── */
:root {
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Color Palette: Deep Forest Jade & Modern Slate */
  --color-primary: #1B4332;
  --color-primary-dark: #081C15;
  --color-primary-light: #2D6A4F;
  --color-accent: #DDA15E;
  --color-accent-light: #F7EAD9;

  --color-dark: #1A1D20;
  --color-dark-soft: #2B303A;
  --color-muted: #5A626A;
  --color-light-muted: #8E97A0;

  --color-bg: #F8F9FA;
  --color-surface: #FFFFFF;
  --color-surface-soft: #EEF2F0;
  --color-border: #E2E6E4;
  --color-border-dark: #C9D1CD;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(27, 67, 50, 0.04);
  --shadow-md: 0 8px 24px rgba(27, 67, 50, 0.07);
  --shadow-lg: 0 16px 40px rgba(27, 67, 50, 0.11);
  --shadow-xl: 0 24px 60px rgba(27, 67, 50, 0.14);

  /* Layout */
  --container-max: 1240px;
  --container-padding: 1.5rem;
  --header-height: 80px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── Reset & Base ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  color: var(--color-dark);
  background-color: var(--color-bg);
  line-height: 1.65;
  overflow-x: hidden;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

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

/* ── Typography Utilities ── */
.serif {
  font-family: var(--font-serif);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-primary-light);
  background: rgba(45, 106, 79, 0.08);
  padding: 0.375rem 0.875rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 700;
  color: var(--color-dark);
  line-height: 1.2;
  margin-bottom: 1.25rem;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-muted);
  max-width: 720px;
  line-height: 1.7;
}

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

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

/* ── Header & Navigation ── */
.header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(248, 249, 250, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  z-index: 1000;
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.logo__mark {
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(27, 67, 50, 0.25);
  flex-shrink: 0;
}

.logo__text-group {
  display: flex;
  flex-direction: column;
}

.logo__title {
  font-family: var(--font-sans);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--color-dark);
  letter-spacing: -0.02em;
  line-height: 1.1;
  white-space: nowrap;
}

.logo__subtitle {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-muted);
  font-weight: 600;
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  flex: 1;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 1.3vw, 1.5rem);
  list-style: none;
  margin: 0;
  padding: 0;
  white-space: nowrap;
}

.nav__link {
  font-size: clamp(0.8125rem, 0.9vw, 0.9rem);
  font-weight: 500;
  color: var(--color-dark-soft);
  position: relative;
  padding: 0.25rem 0.15rem;
  white-space: nowrap;
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-primary-light);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary-light);
  transition: width var(--transition-fast);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  font-size: 0.875rem;
  padding: 0.55rem 1.15rem;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 14px rgba(27, 67, 50, 0.25);
  transition: all var(--transition-fast);
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-primary:hover {
  background: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(27, 67, 50, 0.35);
  color: #fff;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-surface);
  color: var(--color-dark);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.6875rem 1.375rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-dark);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

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

.mobile-toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--color-dark);
}

/* ── Hero Section ── */
.hero {
  position: relative;
  padding: 5rem 0 4rem;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(238, 242, 240, 0.7) 0%, rgba(248, 249, 250, 1) 100%);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 3.5rem;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-primary-light);
  background: rgba(45, 106, 79, 0.09);
  border: 1px solid rgba(45, 106, 79, 0.2);
  padding: 0.375rem 1rem;
  border-radius: var(--radius-full);
  margin-bottom: 1.25rem;
}

.hero__badge-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary-light);
  box-shadow: 0 0 0 0 rgba(45, 106, 79, 0.6);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(45, 106, 79, 0.6); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(45, 106, 79, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(45, 106, 79, 0); }
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 4.5vw, 4rem);
  font-weight: 700;
  color: var(--color-dark);
  line-height: 1.12;
  margin-bottom: 1.5rem;
}

.hero__title em {
  font-style: italic;
  color: var(--color-primary-light);
}

.hero__desc {
  font-size: 1.15rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 580px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.hero__stat-num {
  font-family: var(--font-sans);
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.hero__stat-label {
  font-size: 0.8125rem;
  color: var(--color-muted);
  margin-top: 0.35rem;
  font-weight: 500;
}

.hero__media {
  position: relative;
}

.hero__image-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 6px solid #fff;
}

.hero__image {
  width: 100%;
  height: 480px;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.hero__image-wrap:hover .hero__image {
  transform: scale(1.03);
}

.hero__float-card {
  position: absolute;
  bottom: -20px;
  left: -25px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 1rem;
  max-width: 290px;
}

.hero__float-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--color-surface-soft);
  color: var(--color-primary);
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.hero__float-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-dark);
}

.hero__float-desc {
  font-size: 0.75rem;
  color: var(--color-muted);
}

/* ── Section General ── */
.section {
  padding: 5.5rem 0;
  position: relative;
}

.section--alt {
  background-color: var(--color-surface-soft);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section__header {
  margin-bottom: 3.5rem;
}

/* ── Solution Comparison Matrix ── */
.solution-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.solution-card {
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 2rem 1.5rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-normal);
}

.solution-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.solution-card.featured {
  border-color: var(--color-primary-light);
  box-shadow: 0 8px 30px rgba(45, 106, 79, 0.15);
}

.solution-card__badge {
  position: absolute;
  top: -12px;
  left: 1.5rem;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
}

.solution-card__title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--color-dark);
  margin-bottom: 0.5rem;
}

.solution-card__cost {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.solution-card__desc {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.solution-card__points {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  font-size: 0.8125rem;
  border-top: 1px solid var(--color-border);
  padding-top: 1.25rem;
}

.solution-card__point {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.point-check {
  color: #2E7D32;
  font-weight: bold;
}

.point-cross {
  color: #C62828;
  font-weight: bold;
}

/* ── Interactive Sofa Finder Box ── */
.finder-box {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  padding: 2.5rem;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.finder-group {
  margin-bottom: 1.5rem;
}

.finder-label {
  display: block;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 0.5rem;
}

.finder-select,
.finder-input {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-dark);
  transition: border-color var(--transition-fast);
}

.finder-select:focus,
.finder-input:focus {
  outline: none;
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.15);
}

.finder-result-card {
  background: linear-gradient(135deg, #F8F9FA 0%, #EEF2F0 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  text-align: center;
}

.finder-result-tag {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
  color: var(--color-primary-light);
  margin-bottom: 0.5rem;
}

.finder-result-size {
  font-family: var(--font-serif);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 0.5rem;
}

.finder-result-breakdown {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.6;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--color-border-dark);
}

/* ── Step-by-Step Measurement Guide ── */
.measure-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.measure-step {
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.measure-step__num {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 700;
  margin-bottom: 1.25rem;
}

.measure-step__title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--color-dark);
  margin-bottom: 0.75rem;
}

.measure-step__desc {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.6;
}

/* ── Fabric Grid ── */
.fabric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2rem;
}

.fabric-card {
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.fabric-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(45, 106, 79, 0.3);
}

.fabric-card__img-wrap {
  height: 220px;
  overflow: hidden;
  position: relative;
}

.fabric-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.fabric-card:hover .fabric-card__img {
  transform: scale(1.05);
}

.fabric-card__tag {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  color: var(--color-dark);
}

.fabric-card__body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.fabric-card__title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 0.75rem;
}

.fabric-card__desc {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.fabric-card__specs {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-dark-soft);
  border-top: 1px solid var(--color-border);
  padding-top: 1rem;
}

.fabric-spec-row {
  display: flex;
  justify-content: space-between;
}

.fabric-spec-label {
  color: var(--color-light-muted);
}

/* ── Authority / Initiative Section ── */
.initiative-card {
  background: #fff;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  padding: 3.5rem;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3.5rem;
  align-items: center;
}

.initiative-title {
  font-family: var(--font-serif);
  font-size: 2.25rem;
  color: var(--color-dark);
  margin-bottom: 1.25rem;
  line-height: 1.2;
}

.initiative-desc {
  font-size: 1.05rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

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

.metric-item {
  background: var(--color-surface-soft);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  border: 1px solid var(--color-border);
}

.metric-val {
  font-family: var(--font-sans);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-primary);
}

.metric-lbl {
  font-size: 0.8125rem;
  color: var(--color-muted);
  margin-top: 0.25rem;
}

.heritage-box {
  background: linear-gradient(135deg, #081C15 0%, #1B4332 100%);
  border-radius: var(--radius-lg);
  color: #fff;
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
}

.heritage-box::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -40%;
  width: 250px;
  height: 250px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(221, 161, 94, 0.3) 0%, transparent 70%);
}

.heritage-tag {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 700;
  margin-bottom: 1rem;
}

.heritage-name {
  font-family: var(--font-serif);
  font-size: 1.85rem;
  margin-bottom: 0.5rem;
  color: #fff;
}

.heritage-info {
  font-size: 0.9375rem;
  color: #C9D1CD;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.heritage-contact {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.25rem;
  font-size: 0.875rem;
}

.heritage-link {
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
}

.heritage-link:hover {
  text-decoration: underline;
}

/* ── FAQ Accordion ── */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-item.is-open {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  padding: 1.35rem 1.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-dark);
}

.faq-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
  color: var(--color-primary-light);
}

.faq-item.is-open .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  padding: 0 1.75rem 1.5rem;
  font-size: 0.95rem;
  color: var(--color-muted);
  line-height: 1.7;
}

.faq-item.is-open .faq-answer {
  display: block;
}

/* ── Footer ── */
.footer {
  background: var(--color-dark);
  color: #fff;
  padding: 4.5rem 0 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer__brand-title {
  font-family: var(--font-sans);
  font-size: 1.45rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
  color: #fff;
}

.footer__brand-desc {
  font-size: 0.875rem;
  color: #8E97A0;
  line-height: 1.65;
  margin-bottom: 1.5rem;
}

.footer__heading {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 1.25rem;
}

.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.875rem;
}

.footer__link {
  color: #C9D1CD;
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: #fff;
  padding-left: 4px;
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.875rem;
  color: #C9D1CD;
  margin-bottom: 0.75rem;
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  color: #8E97A0;
}

.footer__bottom a {
  color: var(--color-accent);
}

.footer__bottom a:hover {
  text-decoration: underline;
}

/* ── Back to Top ── */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  z-index: 99;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--color-primary-light);
  transform: translateY(-3px);
}

/* ── Mobile Navigation Drawer ── */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(26, 29, 32, 0.6);
  backdrop-filter: blur(8px);
  z-index: 2000;
}

.mobile-nav.is-open {
  display: block;
}

.mobile-nav__panel {
  width: 80%;
  max-width: 320px;
  height: 100%;
  background: var(--color-bg);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
}

.mobile-nav__close {
  align-self: flex-end;
  font-size: 1.5rem;
  margin-bottom: 2rem;
  color: var(--color-dark);
}

.mobile-nav__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  font-size: 1.15rem;
  font-weight: 600;
}

/* ── Responsive Queries ── */
@media (max-width: 1024px) {
  .hero__grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .hero__media {
    max-width: 600px;
    margin: 0 auto;
  }
  .solution-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .finder-box {
    grid-template-columns: 1fr;
  }
  .measure-grid {
    grid-template-columns: 1fr;
  }
  .initiative-card {
    grid-template-columns: 1fr;
    padding: 2.5rem;
  }
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 1080px) {
  .nav {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .header__actions .btn-primary {
    display: none;
  }
}

@media (max-width: 768px) {
  .solution-grid {
    grid-template-columns: 1fr;
  }
  .footer__grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .footer__bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
  .fabric-grid {
    grid-template-columns: 1fr;
  }
}

/* ── Blog & Article Styles ── */
.article-wrap {
  padding: calc(var(--header-height, 80px) + 2.5rem) 0 4rem;
  background: var(--color-bg);
}

.article-container {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-muted);
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.breadcrumbs a {
  color: var(--color-primary-light);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.breadcrumbs span.current {
  color: var(--color-dark);
  font-weight: 600;
}

.article-header {
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 2rem;
}

.article-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background: rgba(45, 106, 79, 0.09);
  color: var(--color-primary-light);
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}

.article-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.8vw, 3rem);
  font-weight: 700;
  color: var(--color-dark);
  line-height: 1.18;
  margin-bottom: 1rem;
}

.article-subtitle {
  font-size: 1.15rem;
  color: var(--color-muted);
  line-height: 1.65;
  margin-bottom: 1.5rem;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--color-muted);
  flex-wrap: wrap;
}

.article-meta-author {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--color-dark);
}

.article-meta-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 0.875rem;
  font-weight: 700;
}

.article-featured-img {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow-md);
}

.article-featured-img img {
  width: 100%;
  height: auto;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.article-body {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-dark);
}

.article-body h2 {
  font-family: var(--font-serif);
  font-size: 1.85rem;
  color: var(--color-dark);
  margin: 2.5rem 0 1rem;
  line-height: 1.25;
}

.article-body h3 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--color-dark);
  margin: 2rem 0 0.75rem;
}

.article-body p {
  margin-bottom: 1.25rem;
}

.article-body ul, .article-body ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.article-body li {
  margin-bottom: 0.5rem;
}

.article-callout {
  background: var(--color-surface-soft);
  border-left: 4px solid var(--color-primary-light);
  padding: 1.5rem;
  border-radius: var(--radius-sm);
  margin: 2rem 0;
}

.article-callout h4 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.article-callout p:last-child {
  margin-bottom: 0;
}

.article-author-card {
  margin-top: 3.5rem;
  padding: 2rem;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  display: flex;
  gap: 1.5rem;
  align-items: center;
  box-shadow: var(--shadow-sm);
}

.author-card-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 1.75rem;
  font-family: var(--font-serif);
  flex-shrink: 0;
}

.author-card-name {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-dark);
}

.author-card-role {
  font-size: 0.8125rem;
  color: var(--color-primary-light);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.author-card-bio {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.6;
}

/* ── Blog Homepage Section ── */
.blog-section {
  padding: 5.5rem 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.blog-card {
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.blog-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.blog-card-img-wrap {
  aspect-ratio: 16/10;
  overflow: hidden;
}

.blog-card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.blog-card:hover .blog-card-img-wrap img {
  transform: scale(1.05);
}

.blog-card-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.blog-card-tag {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--color-primary-light);
  margin-bottom: 0.5rem;
}

.blog-card-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-dark);
  line-height: 1.3;
  margin-bottom: 0.75rem;
}

.blog-card-excerpt {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.blog-card-meta {
  font-size: 0.8125rem;
  color: var(--color-muted);
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--color-border);
  padding-top: 1rem;
}