/* ==========================================================================
   21 INTERIOR STUDIO - MODERN ARCHITECTURAL DESIGN SYSTEM
   Variant B: Clean Premium Trade (Manrope / Architectural Crimson & Brass)
   ========================================================================== */

:root {
  /* Core Brand Tokens from Design Brief */
  --background: #fcfbfa;
  --surface: #ffffff;
  --text: #18181b;
  --muted: #52525b;
  --primary: #b71510;
  --primaryText: #ffffff;
  --accent: #b47836;
  --dark: #121316;
  --darkText: #f4f4f5;

  /* Derived & Contextual Tokens */
  --primary-hover: #9b110d;
  --primary-light: rgba(183, 21, 16, 0.08);
  --primary-glow: rgba(183, 21, 16, 0.2);
  --accent-hover: #9c662c;
  --accent-light: rgba(180, 120, 54, 0.12);
  --surface-alt: #f5f3ef;
  --surface-elevated: #ffffff;
  --border: rgba(24, 24, 27, 0.12);
  --border-light: rgba(24, 24, 27, 0.06);
  --border-dark: rgba(244, 244, 245, 0.12);
  --focus-ring: #b71510;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(18, 19, 22, 0.04);
  --shadow-md: 0 6px 20px rgba(18, 19, 22, 0.08);
  --shadow-lg: 0 16px 36px rgba(18, 19, 22, 0.12);
  --shadow-dark: 0 16px 40px rgba(0, 0, 0, 0.35);

  /* Typography */
  --font-family: 'Manrope', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: 'Manrope', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Radius */
  --radius-xs: 3px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Layout */
  --container-max: 1280px;
  --header-height: 80px;
  --bottom-bar-height: 64px;
  --transition-fast: 180ms ease;
  --transition-normal: 280ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--background);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: clip;
}

body {
  font-family: var(--font-family);
  color: var(--text);
  background-color: var(--background);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: clip;
  position: relative;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

/* Skip to Content Accessible Link */
.skip-link {
  position: absolute;
  top: -100px;
  inset-inline-start: 1rem;
  background: var(--dark);
  color: var(--darkText);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  z-index: 9999;
  text-decoration: none;
  font-weight: 700;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 1rem;
  outline: 3px solid var(--accent);
}

/* Accessibility Focus States */
:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
}

/* Typography Scale */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.2;
  color: var(--text);
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2rem, 4.5vw + 1rem, 3.5rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(1.65rem, 3vw + 0.5rem, 2.5rem);
}

h3 {
  font-size: clamp(1.25rem, 1.8vw + 0.3rem, 1.65rem);
}

h4 {
  font-size: 1.2rem;
  font-weight: 700;
}

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

p.lead {
  font-size: clamp(1.05rem, 1.2vw + 0.3rem, 1.25rem);
  color: var(--muted);
  line-height: 1.65;
}

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

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

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

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

/* Layout Containers */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

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

.section {
  padding-block: clamp(3.5rem, 6vw, 6rem);
  position: relative;
}

.section-dark {
  background-color: var(--dark);
  color: var(--darkText);
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--darkText);
}

.section-dark p {
  color: #a1a1aa;
}

.section-alt {
  background-color: var(--surface-alt);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin-inline: auto;
  margin-bottom: clamp(2.5rem, 4vw, 4rem);
}

.section-header.text-start {
  text-align: start;
  margin-inline: 0;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  background: var(--primary-light);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}

.section-dark .section-tag {
  background: rgba(180, 120, 54, 0.2);
  color: #e4aa6b;
}

.section-subtitle {
  font-size: clamp(1rem, 1.2vw, 1.15rem);
  color: var(--muted);
  margin-top: 0.75rem;
}

/* ==========================================================================
   HEADER & NAVIGATION (Sticky, Direct Child of Body, Zero Jump)
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  background-color: rgba(252, 251, 250, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-sm);
  background-color: rgba(255, 255, 255, 0.98);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 1.5rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.brand-tagline {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
}

/* Desktop Navigation Menu */
.primary-nav {
  display: none;
}

@media (min-width: 1024px) {
  .primary-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }
}

.nav-list {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 0.25rem;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
  padding: 0.6rem 0.9rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-link:hover {
  color: var(--primary);
  background-color: var(--surface-alt);
}

.nav-link.active {
  color: var(--primary);
  background-color: var(--primary-light);
  font-weight: 700;
}

/* Header Action Buttons */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-phone-link {
  display: none;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text);
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  background: var(--surface-alt);
}

@media (min-width: 1200px) {
  .header-phone-link {
    display: inline-flex;
  }
}

.header-phone-link:hover {
  color: var(--primary);
}

/* Mobile Hamburger Toggle */
.mobile-nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  cursor: pointer;
  padding: 0;
}

@media (min-width: 1024px) {
  .mobile-nav-toggle {
    display: none;
  }
}

.mobile-nav-toggle:focus-visible {
  outline: 2px solid var(--primary);
}

.hamburger-icon {
  width: 22px;
  height: 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

.hamburger-line {
  width: 100%;
  height: 2px;
  background-color: var(--text);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Navigation Drawer */
.mobile-drawer {
  position: fixed;
  inset-block-start: var(--header-height);
  inset-inline: 0;
  inset-block-end: 0;
  background-color: var(--surface);
  z-index: 999;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  overflow-y: auto;
  border-top: 1px solid var(--border);
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: transform var(--transition-normal), opacity var(--transition-normal), visibility var(--transition-normal);
}

.mobile-drawer.is-open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1rem;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  border-radius: var(--radius-sm);
  background-color: var(--surface-alt);
}

.mobile-nav-link.active {
  background-color: var(--primary-light);
  color: var(--primary);
}

.mobile-drawer-contact {
  margin-top: auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.mobile-contact-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9375rem;
  color: var(--muted);
}

/* ==========================================================================
   BUTTONS & CTA STYLING
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-family);
  font-size: 0.9375rem;
  font-weight: 700;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  min-height: 48px;
  line-height: 1.2;
  transition: all var(--transition-fast);
  white-space: normal;
  text-align: center;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--primaryText);
  border-color: var(--primary);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px var(--primary-glow);
}

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

.btn-secondary:hover {
  background-color: #24262c;
  color: #ffffff;
  transform: translateY(-1px);
}

.btn-accent {
  background-color: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

.btn-accent:hover {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #ffffff;
}

.btn-outline {
  background-color: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn-outline:hover {
  background-color: var(--surface-alt);
  border-color: var(--text);
}

.btn-outline-white {
  background-color: transparent;
  color: var(--darkText);
  border-color: var(--border-dark);
}

.btn-outline-white:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: #ffffff;
  color: #ffffff;
}

.btn-whatsapp {
  background-color: #25D366;
  color: #ffffff;
  border-color: #25D366;
}

.btn-whatsapp:hover {
  background-color: #1ebd5b;
  border-color: #1ebd5b;
  color: #ffffff;
}

.btn-sm {
  font-size: 0.8125rem;
  padding: 0.5rem 0.9rem;
  min-height: 38px;
}

.btn-lg {
  font-size: 1.05rem;
  padding: 0.95rem 1.8rem;
  min-height: 52px;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-items: center;
}

/* ==========================================================================
   HERO SECTION (Split Architecture, Architectural Variant B)
   ========================================================================== */

.hero-section {
  padding-block: clamp(2.5rem, 5vw, 5rem);
  background: linear-gradient(180deg, var(--surface-alt) 0%, var(--background) 100%);
  position: relative;
  overflow: clip;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: center;
}

@media (min-width: 992px) {
  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
  }
}

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

.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--accent);
  background-color: var(--surface);
  border: 1px solid rgba(180, 120, 54, 0.25);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
  width: fit-content;
}

.hero-title {
  font-size: clamp(2.1rem, 4.2vw + 0.5rem, 3.6rem);
  font-weight: 800;
  color: var(--text);
  line-height: 1.15;
}

.hero-title .text-primary {
  color: var(--primary);
}

.hero-subheadline {
  font-size: clamp(1.05rem, 1.2vw + 0.1rem, 1.2rem);
  color: var(--muted);
  line-height: 1.6;
  max-width: 620px;
}

.hero-proof-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
  padding: 0.85rem 1.15rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  width: fit-content;
}

.proof-rating {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 800;
  color: var(--text);
  font-size: 0.9375rem;
}

.proof-stars {
  color: var(--accent);
  letter-spacing: 2px;
}

.proof-divider {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: var(--muted);
}

.proof-item {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--muted);
}

.hero-cta-cluster {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

@media (min-width: 540px) {
  .hero-cta-cluster {
    flex-direction: row;
    align-items: center;
  }
}

.hero-visual-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background-color: var(--surface);
  border: 1px solid var(--border);
}

.hero-visual-frame img {
  width: 100%;
  height: clamp(320px, 45vw, 520px);
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.hero-visual-frame:hover img {
  transform: scale(1.02);
}

.hero-floating-card {
  position: absolute;
  inset-block-end: 1.25rem;
  inset-inline-start: 1.25rem;
  background: rgba(18, 19, 22, 0.92);
  color: var(--darkText);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 0.85rem 1.2rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: var(--shadow-dark);
  max-width: 280px;
}

.floating-card-title {
  font-size: 0.875rem;
  font-weight: 800;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.floating-card-desc {
  font-size: 0.75rem;
  color: #d4d4d8;
  margin-top: 0.2rem;
}

/* ==========================================================================
   TRUST STRIP & ACCREDITATIONS
   ========================================================================== */

.trust-section {
  padding-block: 2.5rem;
  background-color: var(--surface);
  border-block: 1px solid var(--border);
}

.trust-header-text {
  text-align: center;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  align-items: center;
}

@media (min-width: 640px) {
  .trust-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1024px) {
  .trust-grid {
    grid-template-columns: repeat(8, 1fr);
    gap: 1.25rem;
  }
}

.trust-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 0.6rem;
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  background: var(--surface-alt);
  min-height: 80px;
  border: 1px solid var(--border-light);
}

.trust-item img {
  max-height: 44px;
  width: auto;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.85;
  transition: all var(--transition-fast);
}

.trust-item:hover img {
  filter: grayscale(0%);
  opacity: 1;
}

.trust-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
}

.trust-sublabel {
  font-size: 0.6875rem;
  color: var(--muted);
}

/* ==========================================================================
   SERVICES SECTION & CARDS
   ========================================================================== */

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

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

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

.service-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-fast);
  position: relative;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(183, 21, 16, 0.3);
}

.service-card-image {
  border-radius: var(--radius-sm);
  overflow: hidden;
  height: 180px;
  background-color: var(--surface-alt);
}

.service-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.service-card:hover .service-card-image img {
  transform: scale(1.05);
}

.service-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.service-card-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text);
}

.service-card-desc {
  font-size: 0.9375rem;
  color: var(--muted);
  line-height: 1.55;
  flex-grow: 1;
}

.service-card-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-light);
}

.service-card-features li {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.service-card-features li::before {
  content: "✓";
  color: var(--accent);
  font-weight: 800;
}

/* ==========================================================================
   SIGNATURE FEATURE: INTERACTIVE BEFORE & AFTER SLIDER
   ========================================================================== */

.comparison-wrapper {
  max-width: 980px;
  margin-inline: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
}

@media (min-width: 768px) {
  .comparison-wrapper {
    padding: 2.25rem;
  }
}

.comparison-meta {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
  .comparison-meta {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }
}

.comparison-project-info h3 {
  font-size: 1.45rem;
  color: var(--text);
}

.comparison-project-desc {
  font-size: 0.9375rem;
  color: var(--muted);
  margin-top: 0.25rem;
}

.comparison-hint {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--primary-light);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
}

/* Before / After Slider Component */
.before-after-container {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  max-height: 560px;
  border-radius: var(--radius-md);
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
  box-shadow: var(--shadow-md);
  background-color: var(--dark);
}

.before-after-container img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

.img-after {
  z-index: 1;
}

.img-before-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  overflow: hidden;
  clip-path: inset(0 calc(100% - var(--slider-pos, 50%)) 0 0);
  will-change: clip-path;
}

.img-before-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Slider Handle & Divider Line */
.slider-divider-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--slider-pos, 50%);
  width: 3px;
  background: #ffffff;
  z-index: 3;
  transform: translateX(-50%);
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.4);
  pointer-events: none;
}

.slider-handle-button {
  position: absolute;
  top: 50%;
  left: var(--slider-pos, 50%);
  transform: translate(-50%, -50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #ffffff;
  border: 3px solid #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 4;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
  cursor: ew-resize;
  pointer-events: none;
  font-size: 1.1rem;
}

.slider-range-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: ew-resize;
  z-index: 5;
  margin: 0;
  padding: 0;
}

/* Labels */
.slider-label {
  position: absolute;
  bottom: 1rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  z-index: 3;
  pointer-events: none;
}

.slider-label-before {
  left: 1rem;
  background: rgba(18, 19, 22, 0.85);
  color: #ffffff;
}

.slider-label-after {
  right: 1rem;
  background: rgba(183, 21, 16, 0.9);
  color: #ffffff;
}

/* ==========================================================================
   PRICING & RENOVATION PACKAGES MATRIX
   ========================================================================== */

.pricing-tabs-wrapper {
  display: flex;
  justify-content: center;
  margin-bottom: 2.5rem;
}

.pricing-tabs {
  display: inline-flex;
  padding: 0.35rem;
  background: var(--surface-alt);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  gap: 0.35rem;
}

.pricing-tab-btn {
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-weight: 700;
  border: none;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pricing-tab-btn.active {
  background: var(--surface);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.pricing-tab-panel {
  display: none;
}

.pricing-tab-panel.active {
  display: block;
}

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

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

@media (min-width: 1200px) {
  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.pricing-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.pricing-card.featured {
  border-color: var(--primary);
  box-shadow: 0 8px 30px rgba(183, 21, 16, 0.12);
}

.featured-tag {
  position: absolute;
  top: -12px;
  right: 1.5rem;
  background: var(--primary);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
}

.pricing-header h3 {
  font-size: 1.35rem;
  color: var(--text);
  margin-bottom: 0.35rem;
}

.pricing-scope-summary {
  font-size: 0.875rem;
  color: var(--muted);
}

.pricing-amount-block {
  padding-block: 0.75rem;
  border-block: 1px solid var(--border-light);
}

.pricing-from {
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.05em;
}

.pricing-price {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.1;
  margin-top: 0.2rem;
}

.pricing-tier-matrix {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
  margin-top: 0.5rem;
}

.pricing-tier-matrix td {
  padding: 0.35rem 0;
  border-bottom: 1px dashed var(--border-light);
}

.pricing-tier-matrix td:last-child {
  text-align: end;
  font-weight: 700;
  color: var(--text);
}

.pricing-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  flex-grow: 1;
}

.pricing-features-list li {
  font-size: 0.875rem;
  color: var(--text);
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  line-height: 1.45;
}

.pricing-features-list li svg {
  flex-shrink: 0;
  color: var(--accent);
  margin-top: 0.15rem;
}

/* ==========================================================================
   SHOWROOM EXPERIENCE SECTION
   ========================================================================== */

.showroom-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: center;
}

@media (min-width: 992px) {
  .showroom-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.showroom-images-cluster {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.showroom-img-main {
  grid-column: 1 / -1;
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 280px;
}

.showroom-img-sub {
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 160px;
}

.showroom-img-main img,
.showroom-img-sub img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.showroom-features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

@media (min-width: 540px) {
  .showroom-features {
    grid-template-columns: 1fr 1fr;
  }
}

.showroom-feature-item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.showroom-feature-item h4 {
  font-size: 0.9375rem;
  color: var(--text);
}

.showroom-feature-item p {
  font-size: 0.8125rem;
  color: var(--muted);
  line-height: 1.45;
}

/* ==========================================================================
   4-STEP PROCESS TIMELINE
   ========================================================================== */

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

@media (min-width: 640px) {
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

.process-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal);
}

.process-card:hover {
  transform: translateY(-4px);
}

.process-step-num {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  opacity: 0.85;
}

.process-card h3 {
  font-size: 1.15rem;
  color: var(--text);
}

.process-card p {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.55;
}

/* ==========================================================================
   PORTFOLIO GALLERY SECTION
   ========================================================================== */

.portfolio-filter-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.filter-btn {
  padding: 0.5rem 1.15rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 700;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  border-color: var(--text);
  color: var(--text);
}

.filter-btn.active {
  background: var(--dark);
  color: var(--darkText);
  border-color: var(--dark);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
}

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

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

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.project-image-box {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--surface-alt);
}

.project-image-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.project-card:hover .project-image-box img {
  transform: scale(1.04);
}

.project-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: rgba(18, 19, 22, 0.85);
  color: #ffffff;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-xs);
  backdrop-filter: blur(4px);
}

.project-info {
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  flex-grow: 1;
}

.project-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text);
}

.project-location {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
}

.project-summary {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.5;
  margin-top: 0.25rem;
}

.project-actions {
  margin-top: auto;
  padding-top: 1rem;
}

/* ==========================================================================
   CLIENT TESTIMONIALS & REVIEWS SECTION
   ========================================================================== */

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

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

@media (min-width: 1200px) {
  .testimonials-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.testimonial-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.testimonial-stars {
  color: var(--accent);
  font-size: 1.15rem;
  letter-spacing: 2px;
}

.testimonial-quote {
  font-size: 0.9375rem;
  color: var(--text);
  line-height: 1.6;
  font-style: italic;
  flex-grow: 1;
}

.testimonial-author-block {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-light);
}

.testimonial-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--primary);
  font-size: 0.9375rem;
}

.testimonial-author-name {
  font-size: 0.9375rem;
  font-weight: 800;
  color: var(--text);
}

.testimonial-source {
  font-size: 0.75rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

/* ==========================================================================
   CONSULTATION INTAKE FORM (High Conversion, Accessible)
   ========================================================================== */

.quote-section {
  background: linear-gradient(180deg, var(--surface) 0%, var(--surface-alt) 100%);
}

.quote-container-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: clamp(1.75rem, 4vw, 3.5rem);
  max-width: 860px;
  margin-inline: auto;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-label {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text);
}

.form-label .required {
  color: var(--primary);
}

.form-control {
  font-family: var(--font-family);
  font-size: 0.9375rem;
  color: var(--text);
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  min-height: 48px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  width: 100%;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
  outline: none;
}

textarea.form-control {
  min-height: 110px;
  resize: vertical;
}

.file-upload-box {
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  text-align: center;
  background: var(--surface-alt);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.file-upload-box:hover {
  border-color: var(--primary);
  background: rgba(183, 21, 16, 0.04);
}

.file-upload-text {
  font-size: 0.875rem;
  color: var(--text);
  font-weight: 600;
}

.file-upload-hint {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 0.25rem;
}

.form-assurance-note {
  font-size: 0.8125rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.75rem;
}

/* ==========================================================================
   FAQ ACCORDION COMPONENT
   ========================================================================== */

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  max-width: 820px;
  margin-inline: auto;
}

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

.faq-item.is-open {
  border-color: rgba(183, 21, 16, 0.3);
}

.faq-question-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: transparent;
  border: none;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text);
  text-align: start;
  cursor: pointer;
}

.faq-question-btn:hover {
  color: var(--primary);
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--surface-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
  color: var(--text);
}

.faq-item.is-open .faq-icon {
  transform: rotate(180deg);
  background: var(--primary-light);
  color: var(--primary);
}

.faq-answer-panel {
  display: none;
  padding: 0 1.5rem 1.25rem 1.5rem;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

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

/* ==========================================================================
   CONTACT & STUDIO VISIT SECTION
   ========================================================================== */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

@media (min-width: 992px) {
  .contact-grid {
    grid-template-columns: 1fr 1.2fr;
  }
}

.contact-info-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-detail-row {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-detail-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.15rem;
}

.contact-detail-content h4 {
  font-size: 0.9375rem;
  margin-bottom: 0.2rem;
}

.contact-detail-content p,
.contact-detail-content a {
  font-size: 0.9375rem;
  color: var(--muted);
  line-height: 1.5;
}

.map-wrapper {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  height: 380px;
}

.map-wrapper iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* ==========================================================================
   FOOTER (Comprehensive Multi-Column, Non-Blocking, With Google Attribution)
   ========================================================================== */

.site-footer {
  background-color: var(--dark);
  color: var(--darkText);
  padding-block: 4rem 2rem;
  border-top: 1px solid var(--border-dark);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
  }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-brand .brand-logo img {
  filter: brightness(0) invert(1);
}

.footer-brand .brand-name {
  color: var(--darkText);
}

.footer-desc {
  font-size: 0.875rem;
  color: #a1a1aa;
  line-height: 1.6;
  max-width: 320px;
}

.footer-awards-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.footer-award-badge {
  font-size: 0.6875rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.08);
  color: #e4aa6b;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-xs);
  border: 1px solid rgba(180, 120, 54, 0.3);
}

.footer-heading {
  font-size: 1rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links-list a {
  font-size: 0.875rem;
  color: #a1a1aa;
  transition: color var(--transition-fast);
}

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

.footer-contact-info {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-contact-item {
  font-size: 0.875rem;
  color: #a1a1aa;
  line-height: 1.5;
}

.footer-contact-item strong {
  color: #ffffff;
}

.footer-bottom-bar {
  padding-top: 2rem;
  border-top: 1px solid var(--border-dark);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  text-align: center;
  font-size: 0.8125rem;
  color: #71717a;
}

@media (min-width: 768px) {
  .footer-bottom-bar {
    flex-direction: row;
    text-align: start;
  }
}

.footer-credits {
  font-size: 0.75rem;
  color: #71717a;
}

/* ==========================================================================
   STICKY BOTTOM ACTION BAR (Mobile Trades Playbook Rule)
   ========================================================================== */

.mobile-sticky-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 900;
  height: var(--bottom-bar-height);
  background: rgba(18, 19, 22, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top: 1px solid var(--border-dark);
  display: flex;
  align-items: center;
  padding-inline: 1rem;
  gap: 0.75rem;
}

@media (min-width: 768px) {
  .mobile-sticky-bar {
    display: none;
  }
}

.mobile-sticky-bar .btn {
  flex: 1;
  min-height: 44px;
  font-size: 0.875rem;
  padding: 0.5rem 0.75rem;
}

/* ==========================================================================
   BACK TO TOP BUTTON
   ========================================================================== */

.back-to-top {
  position: fixed;
  bottom: calc(var(--bottom-bar-height) + 1rem);
  right: 1.25rem;
  z-index: 850;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--dark);
  color: var(--darkText);
  border: 1px solid var(--border-dark);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-fast);
}

@media (min-width: 768px) {
  .back-to-top {
    bottom: 2rem;
    right: 2rem;
  }
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
  transform: translateY(-2px);
}

/* ==========================================================================
   LIGHTBOX / MODAL COMPONENT (Accessible Project Gallery View)
   ========================================================================== */

.lightbox-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(18, 19, 22, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.lightbox-modal.is-active {
  opacity: 1;
  visibility: visible;
}

.lightbox-dialog {
  max-width: 900px;
  width: 100%;
  background: var(--surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-dark);
}

.lightbox-img-box {
  width: 100%;
  aspect-ratio: 16 / 10;
  max-height: 540px;
  background: #000;
}

.lightbox-img-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.lightbox-content {
  padding: 1.5rem;
}

.lightbox-close-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(18, 19, 22, 0.8);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  cursor: pointer;
  z-index: 10;
}

/* ==========================================================================
   MOTION & ACCESSIBILITY PREFERENCES
   ========================================================================== */

@media (prefers-reduced-motion: no-preference) {
  .reveal-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .reveal-on-scroll.is-revealed {
    opacity: 1;
    transform: translateY(0);
  }
}

@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;
  }
}