/* ==========================================================================
   DESIGNTERIO PVT. LTD - MASTER DESIGN SYSTEM & STYLESHEET
   Aesthetics: Haute Architectural Luxury, Editorial Minimalism, Rich Warm Metals
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Variables & Theme Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Brand Accents - Champagne & Brushed Gold */
  --color-accent: #cfa85a;
  --color-accent-light: #e5c583;
  --color-accent-dark: #a88235;
  --color-accent-rgb: 207, 168, 90;
  --color-accent-glow: rgba(207, 168, 90, 0.22);

  /* Dark Mode: Haute Architectural Velvet Noir & Warm Espresso */
  --bg-primary: #0c0b09;
  --bg-secondary: #141310;
  --bg-tertiary: #1b1916;
  --bg-card: rgba(23, 21, 18, 0.78);
  --bg-card-hover: rgba(32, 29, 25, 0.92);
  --bg-glass: rgba(12, 11, 9, 0.88);

  --text-primary: #faf8f5;
  --text-secondary: #d1cbc0;
  --text-muted: #958d7f;

  --border-light: rgba(255, 255, 255, 0.07);
  --border-accent: rgba(207, 168, 90, 0.28);
  --border-card: rgba(255, 255, 255, 0.05);

  --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.65);
  --shadow-glow: 0 0 40px rgba(207, 168, 90, 0.12);

  /* Typography */
  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Syne', sans-serif;

  /* Transitions & Spacing */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-base: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 9999px;

  --container-max: 1360px;
}

/* Light Mode Overrides (Warm Italian Travertine & Alabaster) */
[data-theme="light"] {
  --bg-primary: #faf8f4;
  --bg-secondary: #f3efe6;
  --bg-tertiary: #ebe5d8;
  --bg-card: rgba(255, 255, 255, 0.92);
  --bg-card-hover: #ffffff;
  --bg-glass: rgba(250, 248, 244, 0.9);

  --text-primary: #191816;
  --text-secondary: #48443d;
  --text-muted: #7d776c;

  --border-light: rgba(0, 0, 0, 0.07);
  --border-accent: rgba(184, 142, 60, 0.4);
  --border-card: rgba(0, 0, 0, 0.06);

  --shadow-sm: 0 4px 15px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 35px rgba(184, 142, 60, 0.15);
}

/* --------------------------------------------------------------------------
   2. Reset & Global 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);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  transition: background-color var(--transition-base), color var(--transition-base);
}

section[id] {
  scroll-margin-top: 90px;
}

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

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

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  outline: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

ul {
  list-style: none;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 9px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: 6px;
  border: 2px solid var(--bg-primary);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent);
}

/* Selection */
::selection {
  background: var(--color-accent);
  color: #0d0f12;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

/* --------------------------------------------------------------------------
   3. Typography & Badges
   -------------------------------------------------------------------------- */
h1,
h2,
h3,
h4,
.font-serif {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.18;
  letter-spacing: -0.01em;
}

.font-display {
  font-family: var(--font-display);
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-display);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  margin-bottom: 1.1rem;
  font-weight: 600;
}

.section-tag::before {
  content: '';
  display: inline-block;
  width: 18px;
  height: 1.5px;
  background: var(--color-accent);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 4.2vw, 3.8rem);
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  line-height: 1.14;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.section-title span.accent {
  color: var(--color-accent);
  font-style: italic;
  font-weight: 400;
}

.section-desc {
  font-size: 1.08rem;
  color: var(--text-muted);
  max-width: 660px;
  margin-bottom: 3.5rem;
  font-weight: 400;
  line-height: 1.7;
}

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

.section-header-center .section-desc {
  margin-left: auto;
  margin-right: auto;
}

.section-header-center .section-tag::after {
  content: '';
  display: inline-block;
  width: 18px;
  height: 1.5px;
  background: var(--color-accent);
}

/* --------------------------------------------------------------------------
   4. Buttons & Interactive Elements
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.9rem 2rem;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-accent) 60%, var(--color-accent-dark) 100%);
  color: #0b0a08;
  box-shadow: 0 6px 20px rgba(var(--color-accent-rgb), 0.35);
  font-weight: 700;
}

.btn-primary::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: 0.5s ease;
  z-index: -1;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(var(--color-accent-rgb), 0.45);
}

.btn-primary:hover::after {
  left: 100%;
}

.btn-outline {
  border: 1px solid var(--border-accent);
  color: var(--text-primary);
  background: rgba(var(--color-accent-rgb), 0.04);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  background: var(--color-accent);
  color: #0b0a08;
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(var(--color-accent-rgb), 0.25);
}

.btn-ghost {
  color: var(--text-primary);
  padding: 0.5rem 1rem;
}

.btn-ghost:hover {
  color: var(--color-accent);
}

.btn-sm {
  padding: 0.6rem 1.25rem;
  font-size: 0.82rem;
}

/* --------------------------------------------------------------------------
   5. Header & Navigation (Luxury Atelier Edition)
   -------------------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--bg-glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border-light);
  transition: all var(--transition-base);
}

.header.scrolled {
  background: var(--bg-glass);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  border-bottom-color: rgba(var(--color-accent-rgb), 0.2);
}

/* Wide, fluid container for maximum breathing room */
.header .container {
  max-width: 1560px;
  width: 100%;
  padding-left: clamp(1.5rem, 3.5vw, 3.5rem);
  padding-right: clamp(1.5rem, 3.5vw, 3.5rem);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 86px;
  gap: 2rem;
  transition: height var(--transition-base);
}

.header.scrolled .nav-container {
  height: 72px;
}

/* Brand Monogram & Title */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
  text-decoration: none;
}

.brand-symbol {
  width: 44px;
  height: 44px;
  border: 1.5px solid var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(var(--color-accent-rgb), 0.16) 0%, transparent 100%);
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.brand-symbol::before {
  content: '';
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--color-accent);
  transform: rotate(45deg);
  transition: transform var(--transition-base);
}

.brand-logo:hover .brand-symbol::before {
  transform: rotate(135deg);
}

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

.brand-title {
  font-family: var(--font-display);
  font-size: 1.38rem;
  letter-spacing: 0.2em;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.1;
}

.brand-sub {
  font-size: 0.64rem;
  text-transform: uppercase;
  letter-spacing: 0.26em;
  color: var(--color-accent);
  font-weight: 600;
  margin-top: 2px;
}

/* Desktop Curated Navigation Menu */
.nav-menu {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(1.5rem, 2.2vw, 2.8rem);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  position: relative;
  padding: 0.5rem 0.2rem;
  white-space: nowrap;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-fast);
  border-radius: 2px;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Header Right Actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  flex-shrink: 0;
}

/* Direct Phone Call Chip */
.nav-phone-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  background: rgba(var(--color-accent-rgb), 0.08);
  border: 1px solid rgba(var(--color-accent-rgb), 0.28);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
}

.nav-phone-chip svg {
  color: var(--color-accent);
}

.nav-phone-chip:hover {
  background: var(--color-accent);
  color: #0b0a08;
  border-color: var(--color-accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(var(--color-accent-rgb), 0.35);
}

.nav-phone-chip:hover svg {
  color: #0b0a08;
}

/* Theme Toggle Button */
.theme-toggle-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-light);
  background: var(--bg-card);
  color: var(--text-primary);
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.theme-toggle-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: rotate(15deg);
}

/* Hamburger Mobile Toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  padding: 9px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.mobile-toggle:hover {
  border-color: var(--color-accent);
}

.mobile-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  transition: all var(--transition-fast);
  border-radius: 2px;
}

/* Mobile Off-Canvas Drawer Styles */
.nav-backdrop {
  display: none;
}

.nav-drawer {
  display: none;
}

/* --------------------------------------------------------------------------
   6. Hero Section
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 120px;
  padding-bottom: 70px;
  overflow: hidden;
}

.hero-bg-accent {
  position: absolute;
  top: 10%;
  right: -5%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(var(--color-accent-rgb), 0.12) 0%, rgba(12, 11, 9, 0) 70%);
  pointer-events: none;
  filter: blur(60px);
  z-index: 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  align-items: center;
  gap: 4rem;
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 650px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-full);
  background: rgba(var(--color-accent-rgb), 0.12);
  border: 1px solid var(--border-accent);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 1.75rem;
}

.hero-badge .pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 10px var(--color-accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    transform: scale(0.95);
    opacity: 0.8;
  }

  50% {
    transform: scale(1.3);
    opacity: 1;
    box-shadow: 0 0 14px var(--color-accent);
  }

  100% {
    transform: scale(0.95);
    opacity: 0.8;
  }
}

.hero-title {
  font-size: clamp(2.8rem, 5.2vw, 4.6rem);
  line-height: 1.08;
  margin-bottom: 1.75rem;
  color: var(--text-primary);
  font-weight: 400;
}

.hero-title em {
  font-style: italic;
  font-family: var(--font-serif);
  color: var(--color-accent);
  font-weight: 500;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2.5rem;
  max-width: 540px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-bottom: 3.5rem;
}

/* Stats Counter Ribbon */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-light);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 0.4rem;
}

.stat-number span {
  color: var(--color-accent);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
}

/* Hero Visual Showcase */
.hero-visual-wrapper {
  position: relative;
}

.hero-image-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-card);
}

.hero-image-card img {
  width: 100%;
  height: 540px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.hero-image-card:hover img {
  transform: scale(1.03);
}

.hero-floating-badge {
  position: absolute;
  bottom: 24px;
  left: 24px;
  right: 24px;
  padding: 1.25rem 1.6rem;
  border-radius: var(--radius-sm);
  background: rgba(12, 11, 9, 0.88);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.hfb-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: #ffffff;
  margin-bottom: 0.2rem;
}

.hfb-meta {
  font-size: 0.8rem;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hfb-action {
  font-size: 0.85rem;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  transition: color var(--transition-fast);
}

.hero-floating-badge:hover .hfb-action {
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   7. Atelier Distinctions & Credentials Bar
   -------------------------------------------------------------------------- */
.distinctions-section {
  padding: 2.8rem 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.distinctions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2.25rem;
  align-items: center;
}

.distinction-item {
  display: flex;
  align-items: flex-start;
  gap: 1.1rem;
}

.distinction-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(207, 168, 90, 0.1);
  border: 1px solid rgba(207, 168, 90, 0.22);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.distinction-content h4 {
  font-family: var(--font-display);
  font-size: 0.94rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.distinction-content p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* --------------------------------------------------------------------------
   8. Studio Philosophy & About Section
   -------------------------------------------------------------------------- */
.section {
  padding: 7.5rem 0;
  position: relative;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.about-images-col {
  position: relative;
}

.about-main-img-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-card);
}

.about-main-img-card img {
  width: 100%;
  height: 480px;
  object-fit: cover;
}

.about-overlap-card {
  position: absolute;
  bottom: -40px;
  right: -30px;
  width: 260px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 2px solid var(--color-accent);
}

.about-overlap-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.about-experience-badge {
  position: absolute;
  top: 30px;
  left: -25px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-accent);
  padding: 1.25rem 1.75rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
}

.aeb-number {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.aeb-text {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  margin-top: 0.25rem;
}

.about-features-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem;
  margin-top: 2.5rem;
  margin-bottom: 2.5rem;
}

.feature-box {
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
}

.feature-box:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(var(--color-accent-rgb), 0.12);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.feature-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.feature-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   9. Interactive Before & After Transformation Slider
   -------------------------------------------------------------------------- */
.transformation-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.before-after-container {
  position: relative;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-accent);
  user-select: none;
  aspect-ratio: 16 / 9;
  cursor: ew-resize;
}

.comparison-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.comparison-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

.comparison-after-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 2;
  clip-path: polygon(0 0, 50% 0, 50% 100%, 0 100%);
  pointer-events: none;
  transition: clip-path 0.04s ease-out;
}

.comparison-after-wrapper .comparison-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.comparison-slider-handle {
  position: absolute;
  top: 0;
  left: 50%;
  bottom: 0;
  width: 2px;
  background: var(--color-accent);
  z-index: 10;
  cursor: ew-resize;
  transform: translateX(-50%);
  box-shadow: 0 0 12px rgba(207, 168, 90, 0.7);
}

.handle-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #0c0b09;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5), 0 0 16px rgba(207, 168, 90, 0.6);
  pointer-events: none;
  transition: transform var(--transition-fast);
}

.before-after-container:hover .handle-button {
  transform: translate(-50%, -50%) scale(1.08);
}

.slider-label {
  position: absolute;
  top: 20px;
  padding: 0.45rem 1.1rem;
  background: rgba(12, 11, 9, 0.85);
  backdrop-filter: blur(10px);
  color: #ffffff;
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  z-index: 5;
  border: 1px solid var(--border-light);
}

.slider-label.label-before {
  right: 20px;
}

.slider-label.label-after {
  left: 20px;
  color: var(--color-accent-light);
  border-color: var(--border-accent);
}

.transformation-meta-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1100px;
  margin: 1.75rem auto 0;
  padding: 1.25rem 2rem;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-card);
  flex-wrap: wrap;
  gap: 1rem;
}

.tmb-info h4 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--text-primary);
}

.tmb-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.tmb-stats {
  display: flex;
  gap: 2rem;
}

.tmb-stat-unit {
  text-align: right;
}

.tmb-stat-val {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-accent);
}

.tmb-stat-lbl {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   10. Services Suite
   -------------------------------------------------------------------------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  transition: all var(--transition-base);
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  background: var(--bg-card-hover);
}

.service-card:hover::before {
  opacity: 1;
}

.service-num {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
  opacity: 0.5;
  margin-bottom: 1.25rem;
}

.service-icon-box {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-sm);
  background: rgba(var(--color-accent-rgb), 0.1);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.75rem;
  border: 1px solid rgba(var(--color-accent-rgb), 0.22);
}

.service-title {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.service-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 2rem;
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2.25rem;
  border-top: 1px solid var(--border-light);
  padding-top: 1.5rem;
}

.service-features li {
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.service-features li svg {
  color: var(--color-accent);
  flex-shrink: 0;
}

.service-action {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  font-weight: 600;
}

.service-action svg {
  transition: transform var(--transition-fast);
}

.service-card:hover .service-action svg {
  transform: translateX(5px);
}

/* --------------------------------------------------------------------------
   11. Interactive Interior Budget Estimator
   -------------------------------------------------------------------------- */
.estimator-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.estimator-card {
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  padding: 3.5rem;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.estimator-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 3.5rem;
  align-items: start;
}

.estimator-step {
  margin-bottom: 2.25rem;
}

.step-label {
  font-family: var(--font-display);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  font-weight: 600;
  display: block;
  margin-bottom: 1rem;
}

/* Option Pill Selector */
.option-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.chip-option {
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-card);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.chip-option:hover {
  border-color: var(--border-accent);
  color: var(--text-primary);
}

.chip-option.active {
  background: rgba(var(--color-accent-rgb), 0.15);
  border-color: var(--color-accent);
  color: var(--color-accent-light);
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(var(--color-accent-rgb), 0.15);
}

/* Slider Controls */
.range-slider-wrapper {
  margin-top: 0.75rem;
}

.range-slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.range-slider-val {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-accent);
}

input[type="range"].luxury-range {
  width: 100%;
  -webkit-appearance: none;
  height: 6px;
  background: var(--bg-tertiary);
  border-radius: 3px;
  outline: none;
}

input[type="range"].luxury-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-accent);
  cursor: pointer;
  border: 3px solid var(--bg-primary);
  box-shadow: 0 0 10px rgba(var(--color-accent-rgb), 0.6);
  transition: transform var(--transition-fast);
}

input[type="range"].luxury-range::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* Estimator Live Output Receipt Card */
.estimator-result-panel {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  position: relative;
}

.estimator-result-panel::before {
  content: 'ESTIMATE PREVIEW';
  position: absolute;
  top: 15px;
  right: 20px;
  font-family: var(--font-display);
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

.erp-title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.price-display-box {
  padding: 1.5rem;
  background: rgba(12, 11, 9, 0.55);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-accent);
  margin-bottom: 2rem;
}

.price-range-text {
  font-family: var(--font-display);
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.1;
  margin-bottom: 0.35rem;
}

.price-subtext {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.breakdown-list {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  margin-bottom: 2.25rem;
  border-top: 1px dashed var(--border-light);
  padding-top: 1.5rem;
}

.breakdown-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
}

.breakdown-row span:first-child {
  color: var(--text-muted);
}

.breakdown-row span:last-child {
  color: var(--text-primary);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   12. Curated Portfolio Gallery & Filter
   -------------------------------------------------------------------------- */
.portfolio-filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 3.5rem;
}

.filter-btn {
  padding: 0.65rem 1.6rem;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: all var(--transition-fast);
}

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

.filter-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #0b0a08;
  font-weight: 700;
  box-shadow: 0 4px 18px rgba(var(--color-accent-rgb), 0.35);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 2rem;
}

.portfolio-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  transition: all var(--transition-base);
}

.portfolio-item:hover {
  transform: translateY(-8px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-lg);
}

.portfolio-img-box {
  position: relative;
  height: 320px;
  overflow: hidden;
}

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

.portfolio-item:hover .portfolio-img-box img {
  transform: scale(1.08);
}

.portfolio-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(12, 11, 9, 0.05) 0%, rgba(12, 11, 9, 0.9) 100%);
  display: flex;
  align-items: flex-end;
  padding: 1.75rem;
  opacity: 1;
  transition: opacity var(--transition-base);
}

.portfolio-details {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.portfolio-tag {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent-light);
  font-family: var(--font-display);
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.portfolio-name {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: #ffffff;
}

.portfolio-quick-view-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.portfolio-item:hover .portfolio-quick-view-btn {
  background: var(--color-accent);
  color: #0d0f12;
  transform: rotate(45deg);
}

/* --------------------------------------------------------------------------
   13. Materials & Haute Curation
   -------------------------------------------------------------------------- */
.materials-section {
  position: relative;
}

.materials-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4.5rem;
  align-items: center;
}

.materials-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.material-card {
  display: flex;
  align-items: flex-start;
  gap: 1.4rem;
  padding: 1.35rem 1.6rem;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
}

.material-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
  transform: translateX(6px);
  box-shadow: var(--shadow-sm);
}

.mat-badge {
  font-family: var(--font-display);
  font-size: 0.8rem;
  color: var(--color-accent);
  font-weight: 700;
  padding: 0.35rem 0.65rem;
  background: rgba(207, 168, 90, 0.12);
  border: 1px solid rgba(207, 168, 90, 0.2);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.mat-info h4 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
  font-weight: 600;
}

.mat-info p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   14. The 4-D Process Methodology
   -------------------------------------------------------------------------- */
.process-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.75rem;
  position: relative;
}

.process-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 2.4rem 1.8rem;
  position: relative;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.process-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

.process-step-num {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 1.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(207, 168, 90, 0.1);
  border: 1px solid var(--border-accent);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.process-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.process-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   15. Testimonials & Client Reviews
   -------------------------------------------------------------------------- */
.testimonials-slider-container {
  max-width: 950px;
  margin: 0 auto;
  position: relative;
}

.testimonials-track {
  display: flex;
  overflow: hidden;
  position: relative;
  min-height: 320px;
}

.testimonial-slide {
  min-width: 100%;
  opacity: 0;
  transform: translateX(30px);
  transition: all var(--transition-slow);
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 1rem;
}

.testimonial-slide.active {
  opacity: 1;
  transform: translateX(0);
  position: relative;
}

.stars-rating {
  color: var(--color-accent);
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  letter-spacing: 0.2em;
}

.testimonial-quote {
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 2.5vw, 1.85rem);
  font-style: italic;
  color: var(--text-primary);
  line-height: 1.45;
  margin-bottom: 2rem;
  max-width: 780px;
}

.client-author-info {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.client-name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.client-role {
  font-size: 0.85rem;
  color: var(--color-accent);
  margin-top: 0.2rem;
}

.testimonial-controls {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.test-btn {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--border-light);
  background: var(--bg-card);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.test-btn:hover {
  background: var(--color-accent);
  color: #0b0c0e;
  border-color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   16. Consultation Booking & Contact
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 4rem;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 3.5rem;
  box-shadow: var(--shadow-lg);
}

.contact-info-col h3 {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}

.contact-meta-items {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  margin: 2.5rem 0;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(var(--color-accent-rgb), 0.12);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.ci-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.ci-val {
  font-size: 1rem;
  color: var(--text-primary);
  font-weight: 500;
  margin-top: 0.15rem;
}

.form-group {
  margin-bottom: 1.4rem;
}

.form-group label {
  display: block;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  margin-bottom: 0.45rem;
  font-weight: 600;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.9rem 1.2rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 15px rgba(var(--color-accent-rgb), 0.2);
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

/* --------------------------------------------------------------------------
   17. Footer
   -------------------------------------------------------------------------- */
.footer {
  background: #080706;
  color: var(--text-primary);
  padding: 5rem 0 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 3.5rem;
  margin-bottom: 4rem;
}

.footer-brand p {
  color: #9da3af;
  font-size: 0.92rem;
  line-height: 1.7;
  margin-top: 1.25rem;
  max-width: 340px;
}

.footer-col h5 {
  font-family: var(--font-display);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: #ffffff;
  margin-bottom: 1.5rem;
  position: relative;
}

.footer-col h5::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 24px;
  height: 1.5px;
  background: var(--color-accent);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.footer-links a {
  color: #9da3af;
  font-size: 0.88rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-accent);
  transform: translateX(4px);
}

.footer-newsletter input {
  width: 100%;
  padding: 0.85rem 1.2rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  color: #ffffff;
  margin-bottom: 0.85rem;
}

.footer-newsletter input:focus {
  border-color: var(--color-accent);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.82rem;
  color: #6b7280;
  flex-wrap: wrap;
  gap: 1rem;
}

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

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

/* --------------------------------------------------------------------------
   18. Quick View Modal & Toast Notifications
   -------------------------------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(8, 10, 12, 0.88);
  backdrop-filter: blur(12px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.modal-backdrop.active {
  opacity: 1;
  pointer-events: all;
}

.modal-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  max-width: 820px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px) scale(0.96);
  transition: transform var(--transition-base);
}

.modal-backdrop.active .modal-box {
  transform: translateY(0) scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  z-index: 10;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background: var(--color-accent);
  color: #0b0c0e;
}

.modal-content {
  padding: 2.5rem;
}

/* Toast Message */
.toast-container {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 3000;
}

.toast {
  padding: 1.1rem 1.6rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-accent);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
  font-size: 0.92rem;
  display: flex;
  align-items: center;
  gap: 0.9rem;
  transform: translateY(30px);
  opacity: 0;
  transition: all var(--transition-base);
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* Floating Action / Back to Top */
.floating-actions {
  position: fixed;
  bottom: 30px;
  right: 30px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 999;
}

.fab-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #0b0a08;
  box-shadow: 0 4px 18px rgba(var(--color-accent-rgb), 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: all var(--transition-fast);
}

.fab-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 24px rgba(var(--color-accent-rgb), 0.6);
}

.back-to-top {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-light);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

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

.back-to-top:hover {
  background: var(--color-accent);
  color: #0b0a08;
}

/* --------------------------------------------------------------------------
   19. Responsive Media Queries
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {

  .hero-grid,
  .about-grid,
  .estimator-grid,
  .materials-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }

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

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

  .hero-image-card img {
    height: 420px;
  }

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

@media (max-width: 1140px) {
  .nav-menu {
    display: none;
  }

  .nav-phone-chip .phone-label {
    display: none;
  }

  .nav-phone-chip {
    padding: 0.55rem;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    justify-content: center;
  }

  .mobile-toggle {
    display: flex;
  }

  .mobile-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .mobile-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .mobile-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* Backdrop */
  .nav-backdrop {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(8, 10, 13, 0.76);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1040;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
  }

  .nav-backdrop.active {
    opacity: 1;
    pointer-events: all;
  }

  /* Off-Canvas Drawer */
  .nav-drawer {
    display: flex;
    position: fixed;
    top: 0;
    right: -100%;
    width: 340px;
    max-width: 88vw;
    height: 100vh;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-accent);
    flex-direction: column;
    justify-content: space-between;
    padding: 2.25rem 2rem;
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.6);
    transition: right var(--transition-base);
    z-index: 1050;
    overflow-y: auto;
  }

  .nav-drawer.active {
    right: 0;
  }

  .nav-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-light);
    margin-bottom: 1.5rem;
  }

  .nav-close-btn {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid var(--border-light);
  }

  .nav-close-btn:hover {
    background: var(--color-accent);
    color: #0b0c0e;
    border-color: var(--color-accent);
  }

  .nav-drawer-menu {
    display: flex;
    flex-direction: column;
    gap: 1.15rem;
    list-style: none;
    padding: 0;
    margin: 0;
  }

  .drawer-nav-link {
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-fast), transform var(--transition-fast);
    display: block;
    padding: 0.25rem 0;
    text-decoration: none;
  }

  .drawer-nav-link:hover,
  .drawer-nav-link.active {
    color: var(--color-accent);
    transform: translateX(6px);
  }

  .nav-drawer-footer {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-light);
    margin-top: 1.5rem;
  }

  .nav-drawer-phone {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.85rem;
    background: rgba(var(--color-accent-rgb), 0.1);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-sm);
    color: var(--color-accent-light);
    font-weight: 600;
    font-size: 0.92rem;
    transition: all var(--transition-fast);
    text-decoration: none;
  }

  .nav-drawer-phone:hover {
    background: var(--color-accent);
    color: #0b0a08;
  }
}

@media (max-width: 768px) {
  #navConsultBtn {
    display: none;
  }

  .brand-title {
    font-size: 1.18rem;
    letter-spacing: 0.16em;
  }

  .brand-sub {
    font-size: 0.58rem;
    letter-spacing: 0.2em;
  }

  .brand-symbol {
    width: 38px;
    height: 38px;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .section-title {
    font-size: 2.1rem;
  }

  .about-overlap-card {
    display: none;
  }

  .form-grid-2 {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 580px) {
  .hero-stats {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .about-features-list {
    grid-template-columns: 1fr;
  }

  .process-grid {
    grid-template-columns: 1fr;
  }

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

  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  .estimator-card,
  .contact-grid {
    padding: 1.8rem;
  }

  .transformation-meta-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .tmb-stats {
    width: 100%;
    justify-content: space-between;
  }
}