/* ==========================================================================
   ENTERIOR — Luxury Interior Design & Custom Renovation
   Design System & Styling
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

:root {
  /* Colors */
  --c-dark-bg: #141312;
  --c-dark-surface: #1C1B19;
  --c-dark-card: #23221F;
  --c-dark-border: rgba(255, 255, 255, 0.08);
  --c-dark-text: #F3EFE6;
  --c-dark-muted: #9E988D;

  --c-light-bg: #F7F4EC;
  --c-light-surface: #FFFFFF;
  --c-light-card: #FAF8F2;
  --c-light-border: #E5DFD1;
  --c-light-text: #1C1A17;
  --c-light-muted: #555047;

  --c-accent-gold: #C5A47E;
  --c-accent-gold-hover: #B5936C;
  --c-accent-gold-light: rgba(197, 164, 126, 0.15);
  --c-accent-copper: #D48C5B;

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

  /* Transitions & Curves (Emil Kowalski Design Engineering) */
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
  --ease-drawer: cubic-bezier(0.32, 0.72, 0, 1);
  --ease-spring: cubic-bezier(0.175, 0.885, 0.32, 1.15);

  --tr-fast: transform 160ms var(--ease-out), opacity 160ms var(--ease-out), background-color 160ms var(--ease-out), border-color 160ms var(--ease-out), color 160ms var(--ease-out);
  --tr-smooth: transform 220ms var(--ease-out), opacity 220ms var(--ease-out), background-color 220ms var(--ease-out), border-color 220ms var(--ease-out), box-shadow 220ms var(--ease-out);

  /* Geometry & Shadows */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --shadow-subtle: 0 10px 30px rgba(0, 0, 0, 0.04);
  --shadow-premium: 0 24px 60px rgba(0, 0, 0, 0.08);
  --shadow-dark: 0 30px 80px rgba(0, 0, 0, 0.4);
}

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

::selection {
  background: rgba(197, 164, 126, 0.3);
  color: #FFFFFF;
}

:focus-visible {
  outline: 2px solid var(--c-accent-gold);
  outline-offset: 3px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--c-dark-bg);
  color: var(--c-dark-text);
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
  overflow-x: hidden;
}

body {
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  width: 100%;
}

body.nav-drawer-open {
  overflow: hidden;
  touch-action: none;
}

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

a {
  color: inherit;
  text-decoration: none;
  touch-action: manipulation;
}

button, input, select, textarea {
  font-family: inherit;
  border: none;
  outline: none;
  touch-action: manipulation;
}

/* Prevent auto-zoom on iOS Safari */
input, select, textarea {
  font-size: 16px;
}

button {
  cursor: pointer;
}

.container {
  max-width: 1340px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
}

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

/* Architectural Hairline Grid Decorators */
.hairline-grid {
  position: relative;
}

.hairline-grid::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 15%;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--c-dark-border), transparent);
  pointer-events: none;
}

.hairline-grid::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  right: 15%;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--c-dark-border), transparent);
  pointer-events: none;
}

/* Section Decorators */
.crosshair {
  position: absolute;
  width: 15px;
  height: 15px;
  pointer-events: none;
  opacity: 0.35;
}
.crosshair::before {
  content: '';
  position: absolute;
  top: 7px;
  left: 0;
  right: 0;
  height: 1px;
  background-color: currentColor;
}
.crosshair::after {
  content: '';
  position: absolute;
  left: 7px;
  top: 0;
  bottom: 0;
  width: 1px;
  background-color: currentColor;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px 36px;
  background-color: var(--c-accent-gold);
  color: #171512;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  transition: transform 160ms var(--ease-out), background-color 160ms var(--ease-out), box-shadow 160ms var(--ease-out);
  box-shadow: 0 8px 24px rgba(197, 164, 126, 0.25);
  position: relative;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
}

.btn-primary::after {
  content: '';
  position: absolute;
  top: 0;
  left: -120%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.28), transparent);
  transform: skewX(-20deg);
  transition: left 650ms var(--ease-out);
  pointer-events: none;
}

@media (hover: hover) and (pointer: fine) {
  .btn-primary:hover {
    background-color: var(--c-accent-gold-hover);
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(197, 164, 126, 0.35);
  }
  .btn-primary:hover::after {
    left: 150%;
  }
}

.btn-primary:active {
  transform: scale(0.97) translateY(0);
  transition-duration: 80ms;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 32px;
  background: transparent;
  color: var(--c-dark-text);
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  border-radius: var(--radius-sm);
  transition: transform 160ms var(--ease-out), border-color 160ms var(--ease-out), color 160ms var(--ease-out), background-color 160ms var(--ease-out);
  user-select: none;
  -webkit-user-select: none;
}

@media (hover: hover) and (pointer: fine) {
  .btn-secondary:hover {
    border-color: var(--c-accent-gold);
    color: var(--c-accent-gold);
    background-color: rgba(197, 164, 126, 0.06);
    transform: translateY(-1px);
  }
}

.btn-secondary:active {
  transform: scale(0.97);
  transition-duration: 80ms;
}

.btn-light {
  background-color: var(--c-accent-gold);
  color: #1A1916;
  transition: transform 160ms var(--ease-out), background-color 160ms var(--ease-out);
  user-select: none;
  -webkit-user-select: none;
}

@media (hover: hover) and (pointer: fine) {
  .btn-light:hover {
    background-color: var(--c-accent-gold-hover);
    transform: translateY(-1px);
  }
}

.btn-light:active {
  transform: scale(0.97);
  transition-duration: 80ms;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
/* ==========================================================================
   Header & Navigation (Architectural Precision & Perfect Alignment)
   ========================================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 18px 0;
  transition: var(--tr-smooth);
  background: rgba(20, 19, 18, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header.scrolled {
  padding: 12px 0;
  background-color: rgba(18, 17, 16, 0.96);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.logo-block {
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  white-space: nowrap;
}

.logo-title {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: #FFFFFF;
  text-transform: uppercase;
  line-height: 1;
}

.logo-subtitle {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-accent-gold);
  margin-top: 4px;
  line-height: 1;
}

/* ==========================================================================
   Navigation (Desktop Header Navigation & Mobile Drawer Panel)
   ========================================================================== */

/* Mobile Drawer Overlay Backdrop */
.nav-drawer-backdrop {
  display: block;
  position: fixed;
  inset: 0;
  background: rgba(14, 13, 12, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1040;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 280ms var(--ease-out), visibility 280ms;
}
.nav-drawer-backdrop.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* Mobile Slide-out Drawer Panel */
.nav-menu {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(320px, 85vw);
  background: #181715;
  border-left: 1px solid rgba(197, 164, 126, 0.25);
  z-index: 1050;
  padding: max(24px, env(safe-area-inset-top, 24px)) 24px max(24px, env(safe-area-inset-bottom, 24px));
  display: flex;
  flex-direction: column;
  transform: translateX(105%);
  transition: transform 300ms cubic-bezier(0.23, 1, 0.32, 1);
  box-shadow: -15px 0 40px rgba(0, 0, 0, 0.8);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  gap: 0;
}
.nav-menu.is-open {
  transform: translateX(0);
}

.nav-drawer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 16px;
}

.nav-drawer-brand {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  color: var(--c-accent-gold);
  letter-spacing: 0.08em;
  font-weight: 500;
}

.nav-drawer-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  color: #FFFFFF;
  font-size: 2rem;
  cursor: pointer;
  border-radius: 50%;
  transition: color 140ms var(--ease-out), transform 140ms var(--ease-out);
}
.nav-drawer-close:active {
  transform: scale(0.9);
}

.nav-links-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-grow: 1;
}

.nav-links-list .nav-link {
  display: flex;
  align-items: center;
  min-height: 44px;
  font-size: 1.05rem;
  color: #E2DFD8;
  padding: 10px 14px;
  border-radius: 4px;
  transition: background-color 140ms, color 140ms;
}
.nav-links-list .nav-link:active {
  background-color: rgba(197, 164, 126, 0.12);
  color: var(--c-accent-gold);
}

.nav-drawer-footer {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: auto;
}
.nav-drawer-phone {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--c-accent-gold);
  text-decoration: none;
  font-weight: 500;
}
.nav-drawer-city {
  font-size: 0.8rem;
  color: var(--c-dark-muted);
}
.nav-drawer-call-btn {
  width: 100%;
  text-align: center;
  justify-content: center;
  margin-top: 8px;
  padding: 12px 20px;
}

/* Desktop Header Navigation */
.desktop-nav {
  display: block;
}

.desktop-nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.desktop-nav-links .nav-link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--c-dark-muted);
  letter-spacing: 0.04em;
  transition: color 140ms var(--ease-out);
  position: relative;
  padding: 6px 0;
  white-space: nowrap;
  display: inline-block;
}

@media (hover: hover) and (pointer: fine) {
  .desktop-nav-links .nav-link:hover, .desktop-nav-links .nav-link.active {
    color: #FFFFFF;
  }
}

.desktop-nav-links .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1.5px;
  background-color: var(--c-accent-gold);
  transition: width 180ms var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .desktop-nav-links .nav-link:hover::after, .desktop-nav-links .nav-link.active::after {
    width: 100%;
  }
}

@media (min-width: 1081px) {
  .nav-menu,
  .nav-drawer-backdrop {
    display: none !important;
  }
}

.header-contacts {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-shrink: 0;
  white-space: nowrap;
}

.header-phone-box {
  text-align: right;
  display: flex;
  flex-direction: column;
  justify-content: center;
  white-space: nowrap;
  flex-shrink: 0;
}

.header-phone {
  display: block;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #FFFFFF;
  line-height: 1.2;
  white-space: nowrap;
  transition: color 140ms var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .header-phone:hover {
    color: var(--c-accent-gold);
  }
}

.header-city-badge {
  font-size: 0.72rem;
  color: var(--c-dark-muted);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  margin-top: 3px;
  line-height: 1;
  white-space: nowrap;
}

.header-city-badge span {
  width: 6px;
  height: 6px;
  background-color: #2ECC71;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.header-phone-icon-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  min-width: 40px;
  min-height: 40px;
  border-radius: var(--radius-sm);
  background: rgba(197, 164, 126, 0.12);
  border: 1px solid rgba(197, 164, 126, 0.28);
  color: var(--c-accent-gold);
  transition: transform 140ms var(--ease-out), background-color 140ms var(--ease-out), border-color 140ms var(--ease-out);
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  -webkit-user-select: none;
  flex-shrink: 0;
}

.header-phone-icon-btn:active {
  transform: scale(0.94);
  background: rgba(197, 164, 126, 0.25);
}

.btn-header-call {
  padding: 10px 20px;
  background: transparent;
  color: var(--c-accent-gold);
  border: 1px solid var(--c-accent-gold);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: transform 140ms var(--ease-out), background-color 140ms var(--ease-out), color 140ms var(--ease-out);
  white-space: nowrap;
  flex-shrink: 0;
  user-select: none;
  -webkit-user-select: none;
}

@media (hover: hover) and (pointer: fine) {
  .btn-header-call:hover {
    background-color: var(--c-accent-gold);
    color: #171512;
    transform: translateY(-1px);
  }
}

.btn-header-call:active {
  transform: scale(0.96);
  transition-duration: 70ms;
}

.burger-btn {
  display: none;
  background: transparent;
  border: none;
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  padding: 0;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  z-index: 1060;
  border-radius: var(--radius-sm);
  transition: background-color 140ms var(--ease-out), transform 140ms var(--ease-out);
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.burger-btn:active {
  transform: scale(0.92);
}

.burger-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: #FFFFFF;
  border-radius: 2px;
  transition: transform 220ms var(--ease-out), opacity 200ms var(--ease-out), background-color 200ms var(--ease-out);
}

.burger-btn.active .burger-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  background-color: var(--c-accent-gold);
}

.burger-btn.active .burger-bar:nth-child(2) {
  opacity: 0;
}

.burger-btn.active .burger-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
  background-color: var(--c-accent-gold);
}

/* ==========================================================================
   Hero Section (Dark Editorial Luxury with "E" Monogram)
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: 100vh;
  padding: 160px 0 100px;
  background-color: var(--c-dark-bg);
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg-glow {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(197, 164, 126, 0.12) 0%, rgba(20, 19, 18, 0) 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-accent-gold);
  margin-bottom: 24px;
}
.hero-tag::before {
  content: '';
  width: 24px;
  height: 1px;
  background-color: var(--c-accent-gold);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 4.4rem;
  line-height: 1.05;
  font-weight: 400;
  color: #FFFFFF;
  margin-bottom: 28px;
  letter-spacing: -0.02em;
}

.hero-title em {
  font-style: italic;
  font-weight: 300;
  color: var(--c-accent-gold);
}

.hero-desc {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--c-dark-muted);
  max-width: 540px;
  margin-bottom: 38px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 50px;
  flex-wrap: wrap;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  padding-top: 36px;
  border-top: 1px solid var(--c-dark-border);
}

.metric-item-num {
  font-family: var(--font-serif);
  font-size: 2.3rem;
  font-weight: 500;
  color: var(--c-accent-gold);
  line-height: 1.1;
  display: flex;
  align-items: baseline;
  gap: 2px;
}
.metric-item-label {
  font-size: 0.8rem;
  color: var(--c-dark-muted);
  line-height: 1.35;
  margin-top: 6px;
}

/* Bespoke Monogram "E" Frame */
.hero-visual {
  position: relative;
}

.hero-monogram-container {
  position: relative;
  width: 100%;
  aspect-ratio: 4/5;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-dark);
}

.hero-image-underlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.hero-monogram-container:hover .hero-image-underlay {
  transform: scale(1.04);
}

/* Cutout "E" architectural mask overlay */
.hero-monogram-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(20, 19, 18, 0.4) 0%, rgba(20, 19, 18, 0.85) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.hero-architectural-e {
  font-family: var(--font-serif);
  font-size: 32rem;
  font-weight: 300;
  line-height: 0.8;
  color: rgba(255, 255, 255, 0.95);
  position: absolute;
  right: -5%;
  bottom: -5%;
  user-select: none;
  opacity: 0.15;
}

.hero-floating-badge {
  position: absolute;
  bottom: 30px;
  left: 20px;
  background: rgba(28, 27, 25, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 18px 24px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(197, 164, 126, 0.3);
  max-width: 300px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.floating-badge-badge {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--c-accent-gold);
  font-weight: 700;
  margin-bottom: 4px;
}

.floating-badge-text {
  font-size: 0.86rem;
  color: #FFFFFF;
  line-height: 1.4;
  font-weight: 400;
}

/* ==========================================================================
   Section 2: Interactive Catalog Album (Light Cashmere Zone)
   ========================================================================== */
.light-zone,
.quiz-section,
.stages-section,
.workshop-section,
.showroom-section,
.faq-section {
  color: var(--c-light-text);
}

.light-zone h1, .light-zone h2, .light-zone h3, .light-zone h4,
.quiz-section h1, .quiz-section h2, .quiz-section h3, .quiz-section h4,
.stages-section h1, .stages-section h2, .stages-section h3, .stages-section h4,
.workshop-section h1, .workshop-section h2, .workshop-section h3, .workshop-section h4,
.showroom-section h1, .showroom-section h2, .showroom-section h3, .showroom-section h4,
.faq-section h1, .faq-section h2, .faq-section h3, .faq-section h4 {
  color: var(--c-light-text);
}

.light-zone {
  background-color: var(--c-light-bg);
  position: relative;
  padding: 120px 0;
}

.section-head-center {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-block;
  font-size: 0.76rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-accent-copper);
  font-weight: 600;
  margin-bottom: 14px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 3.2rem;
  line-height: 1.15;
  font-weight: 400;
  color: var(--c-light-text);
  margin-bottom: 20px;
}
.section-title.dark-text {
  color: var(--c-light-text);
}
.section-title.light-text {
  color: #FFFFFF;
}

.section-desc {
  font-size: 1.05rem;
  color: #555047;
  line-height: 1.65;
}

/* Book Presentation Card */
.catalog-album-wrap {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 50px;
  background-color: var(--c-light-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--c-light-border);
  box-shadow: var(--shadow-premium);
  overflow: hidden;
  align-items: center;
  padding: 40px;
}

.catalog-book-visual {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.catalog-book-visual img {
  width: 100%;
  border-radius: var(--radius-sm);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
  transition: transform 0.5s ease;
}

.catalog-book-visual:hover img {
  transform: scale(1.02);
}

/* Interactive pins on sketchbook */
.pin-point {
  position: absolute;
  width: 32px;
  height: 32px;
  background-color: var(--c-accent-gold);
  color: #FFFFFF;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: 0 0 0 6px rgba(197, 164, 126, 0.28);
  cursor: pointer;
  transition: transform 160ms var(--ease-out), box-shadow 160ms var(--ease-out);
  user-select: none;
  -webkit-user-select: none;
}

@media (hover: hover) and (pointer: fine) {
  .pin-point:hover {
    transform: scale(1.15);
    box-shadow: 0 0 0 10px rgba(197, 164, 126, 0.45);
  }
}

.pin-point:active {
  transform: scale(0.96);
  transition-duration: 70ms;
}

.pin-point-1 { top: 25%; left: 30%; }
.pin-point-2 { top: 40%; right: 28%; }
.pin-point-3 { bottom: 25%; right: 35%; }

.pin-tooltip {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(4px) scale(0.95);
  transform-origin: bottom center;
  background: rgba(23, 21, 18, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(197, 164, 126, 0.35);
  color: #FFFFFF;
  padding: 8px 14px;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: transform 140ms var(--ease-out), opacity 140ms var(--ease-out), visibility 140ms;
  pointer-events: none;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.4);
}

.pin-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: rgba(23, 21, 18, 0.96);
}

@media (hover: hover) and (pointer: fine) {
  .pin-point:hover .pin-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0) scale(1);
  }
}

.catalog-form-col {
  padding-left: 20px;
}

.catalog-form-title {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 500;
  line-height: 1.2;
  margin-bottom: 14px;
  color: var(--c-light-text);
}

.catalog-features-list {
  list-style: none;
  margin: 24px 0 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.catalog-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--c-light-text);
}

.catalog-feature-item svg {
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--c-accent-copper);
}

.lead-form-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.input-field {
  width: 100%;
  padding: 16px 20px;
  background-color: var(--c-light-card);
  border: 1px solid var(--c-light-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  color: var(--c-light-text);
  transition: var(--tr-fast);
}

.input-field:focus {
  border-color: var(--c-accent-gold);
  background-color: #FFFFFF;
  box-shadow: 0 0 0 3px rgba(197, 164, 126, 0.15);
}

.form-privacy-note {
  font-size: 0.75rem;
  color: var(--c-light-muted);
  line-height: 1.4;
  margin-top: 8px;
}

/* ==========================================================================
   Section 3: Interactive 4-Step Renovation Calculator (Editorial Architectural Layout)
   ========================================================================== */
.quiz-section {
  padding: 120px 0;
  background-color: var(--c-light-bg);
  position: relative;
  border-top: 1px solid var(--c-light-border);
}

.calculator-editorial-container {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 36px;
  align-items: stretch;
}

/* Left Side Teaser Card (Inspired by Remontus Editorial Reference) */
.calc-side-teaser {
  background-color: #FFFFFF;
  border: 1px solid var(--c-light-border);
  border-radius: var(--radius-sm);
  padding: 38px 30px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-subtle);
  position: relative;
}

.teaser-discount-badge {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-accent-copper);
  margin-bottom: 8px;
}

.teaser-big-num {
  font-family: var(--font-serif);
  font-size: 5.6rem;
  line-height: 0.92;
  font-weight: 400;
  letter-spacing: -0.02em;
  font-variant-numeric: lining-nums proportional-nums;
  font-feature-settings: "lnum" 1, "pnum" 1;
  color: var(--c-light-text);
  margin-bottom: 12px;
}

.teaser-big-num em {
  font-style: italic;
  color: var(--c-accent-copper);
}

.teaser-highlight-title {
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--c-light-text);
  margin-bottom: 10px;
}

.teaser-subtext {
  font-size: 0.88rem;
  color: var(--c-light-muted);
  line-height: 1.5;
  margin-bottom: 24px;
}

.teaser-blueprint-preview {
  background-color: #FAF8F4;
  border: 1px solid #EAE3D6;
  border-radius: 4px;
  padding: 18px;
  margin-top: auto;
  margin-bottom: 20px;
}

.blueprint-svg {
  width: 100%;
  height: auto;
  display: block;
}

.blueprint-svg text {
  stroke: none !important;
  fill: #6A655C;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 7.5px;
  letter-spacing: 0.03em;
}

.blueprint-caption {
  font-size: 0.76rem;
  color: var(--c-light-muted);
  text-align: center;
  margin-top: 10px;
}

.blueprint-caption strong {
  color: var(--c-light-text);
}

.teaser-guarantee-note {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--c-light-text);
  border-top: 1px solid var(--c-light-border);
  padding-top: 18px;
}

.teaser-guarantee-note svg {
  color: var(--c-accent-gold);
  flex-shrink: 0;
}

/* Right Main Console */
.calc-main-console {
  background-color: #FFFFFF;
  border: 1px solid var(--c-light-border);
  border-radius: var(--radius-sm);
  padding: 44px 48px;
  box-shadow: var(--shadow-premium);
  display: flex;
  flex-direction: column;
}

/* Header Meta & Timeline */
.calc-header-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--c-light-border);
  margin-bottom: 32px;
}

.calc-step-counter {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.step-num-active {
  font-family: var(--font-serif);
  font-size: 1.85rem;
  font-weight: 600;
  color: var(--c-accent-copper);
  line-height: 1;
}

.step-num-total {
  font-size: 0.85rem;
  color: var(--c-light-muted);
  font-weight: 500;
}

.step-meta-label {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-light-muted);
  font-weight: 600;
  margin-left: 12px;
}

.calc-timeline-progress {
  width: 180px;
}

.timeline-track {
  height: 3px;
  background-color: #EFE9DF;
  border-radius: 2px;
  overflow: hidden;
}

.timeline-bar {
  height: 100%;
  width: 25%;
  background: var(--c-accent-copper);
  transition: width 0.4s ease;
}

/* Calc Step Panes */
.calc-step-pane {
  display: none;
}

.calc-step-pane.active {
  display: block;
  animation: stepEntrance 200ms var(--ease-out) forwards;
}

@keyframes stepEntrance {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Question Title */
.console-question-title {
  font-family: var(--font-serif);
  font-size: 2.15rem;
  line-height: 1.2;
  font-weight: 400;
  color: var(--c-light-text);
  margin-bottom: 28px;
  letter-spacing: -0.01em;
}

/* Options Grid */
.architectural-options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-bottom: 32px;
}

.arch-option-tile {
  background-color: #FAF8F5;
  border: 1px solid #E5DFD1;
  border-radius: 4px;
  padding: 22px 24px;
  cursor: pointer;
  transition: transform 160ms var(--ease-out), border-color 160ms var(--ease-out), background-color 160ms var(--ease-out), box-shadow 160ms var(--ease-out);
  position: relative;
  display: flex;
  flex-direction: column;
  user-select: none;
  -webkit-user-select: none;
}

@media (hover: hover) and (pointer: fine) {
  .arch-option-tile:hover {
    background-color: #FFFFFF;
    border-color: var(--c-accent-gold);
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.04);
  }
}

.arch-option-tile:active {
  transform: scale(0.985);
  transition-duration: 70ms;
}

.arch-option-tile.selected {
  background-color: #FFFFFF;
  border: 1.5px solid var(--c-accent-copper);
  box-shadow: 0 10px 30px rgba(212, 140, 91, 0.12);
}

.tile-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.tile-index {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--c-accent-copper);
}

.tile-icon {
  color: var(--c-light-text);
  transition: var(--tr-fast);
}

.arch-option-tile.selected .tile-icon {
  color: var(--c-accent-copper);
}

.tile-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--c-light-text);
  margin-bottom: 6px;
  line-height: 1.3;
}

.tile-desc {
  font-size: 0.84rem;
  color: #6E685F;
  line-height: 1.45;
}

.tile-radio-indicator {
  position: absolute;
  top: 22px;
  right: 22px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1.5px solid #D5CEBF;
  display: none; /* Icon replaces standard radio */
}

/* Step 2: Square Control */
.square-control-editorial {
  margin-bottom: 32px;
}

.square-gauge-card {
  background-color: #FAF8F5;
  border: 1px solid #E5DFD1;
  border-radius: 4px;
  padding: 26px 32px;
  margin-bottom: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.gauge-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-light-muted);
  font-weight: 600;
}

.gauge-digit-row {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.gauge-huge-num {
  font-family: var(--font-serif);
  font-size: 4.8rem;
  font-weight: 500;
  line-height: 0.9;
  color: var(--c-light-text);
}

.gauge-unit {
  font-size: 1.1rem;
  color: var(--c-accent-copper);
  font-weight: 600;
}

.gauge-sub-info {
  font-size: 0.92rem;
  color: var(--c-light-muted);
}

.slider-track-wrap {
  margin-bottom: 28px;
}

.editorial-range-slider {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: #E5DFD1;
  outline: none;
  -webkit-appearance: none;
  cursor: pointer;
}

.editorial-range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--c-accent-copper);
  cursor: pointer;
  box-shadow: 0 0 0 6px rgba(212, 140, 91, 0.2);
  transition: var(--tr-fast);
}

.editorial-range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.slider-ruler-ticks {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--c-light-muted);
  margin-top: 10px;
  font-weight: 500;
}

.presets-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.presets-label {
  font-size: 0.84rem;
  color: var(--c-light-muted);
  font-weight: 500;
  margin-right: 6px;
}

.preset-btn {
  padding: 8px 16px;
  border: 1px solid #E5DFD1;
  background-color: #FFFFFF;
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--c-light-text);
  cursor: pointer;
  transition: transform 140ms var(--ease-out), border-color 140ms var(--ease-out), background-color 140ms var(--ease-out), color 140ms var(--ease-out);
  user-select: none;
  -webkit-user-select: none;
}

@media (hover: hover) and (pointer: fine) {
  .preset-btn:hover {
    border-color: var(--c-accent-gold);
    color: var(--c-accent-copper);
    transform: translateY(-1px);
  }
}

.preset-btn:active {
  transform: scale(0.95);
  transition-duration: 70ms;
}

.preset-btn.active {
  background-color: rgba(212, 140, 91, 0.08);
  border-color: var(--c-accent-copper);
  color: var(--c-accent-copper);
}

/* Step 4: Package Options */
.package-options-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 32px;
}

.arch-package-card {
  background-color: #FAF8F5;
  border: 1px solid #E5DFD1;
  border-radius: 4px;
  padding: 24px 28px;
  cursor: pointer;
  transition: transform 160ms var(--ease-out), border-color 160ms var(--ease-out), background-color 160ms var(--ease-out), box-shadow 160ms var(--ease-out);
  position: relative;
  user-select: none;
  -webkit-user-select: none;
}

@media (hover: hover) and (pointer: fine) {
  .arch-package-card:hover {
    background-color: #FFFFFF;
    border-color: var(--c-accent-gold);
    transform: translateY(-1px);
  }
}

.arch-package-card:active {
  transform: scale(0.985);
  transition-duration: 70ms;
}

.arch-package-card.selected {
  background-color: #FFFFFF;
  border: 1.5px solid var(--c-accent-copper);
  box-shadow: 0 10px 30px rgba(212, 140, 91, 0.12);
}

.pkg-top-tag {
  display: inline-block;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--c-accent-copper);
  margin-bottom: 8px;
}

.pkg-title-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 8px;
}

.pkg-name {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--c-light-text);
}

.pkg-description {
  font-size: 0.88rem;
  color: #6E685F;
  line-height: 1.5;
  margin-left: 40px;
  margin-bottom: 10px;
}

.pkg-perk-badge {
  margin-left: 40px;
  display: inline-flex;
  font-size: 0.8rem;
  font-weight: 600;
  color: #27AE60;
  background-color: rgba(39, 174, 96, 0.08);
  padding: 4px 10px;
  border-radius: 4px;
}

/* Step 5: Final Result */
.calc-final-result-card {
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.result-top-badge {
  display: inline-block;
  font-size: 0.74rem;
  letter-spacing: 0.15em;
  font-weight: 700;
  color: #27AE60;
  background-color: rgba(39, 174, 96, 0.08);
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 20px;
}

.result-price-label {
  font-size: 0.95rem;
  color: var(--c-light-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.result-price-val {
  font-family: var(--font-serif);
  font-size: 4rem;
  font-weight: 500;
  line-height: 1;
  color: var(--c-accent-copper);
  margin: 10px 0;
}

.result-price-note {
  font-size: 0.82rem;
  color: var(--c-light-muted);
}

.result-included-strip {
  display: flex;
  justify-content: center;
  gap: 24px;
  background-color: #FAF8F5;
  border: 1px solid #E5DFD1;
  border-radius: 4px;
  padding: 16px 20px;
  margin: 26px 0 32px;
  flex-wrap: wrap;
}

.strip-item {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--c-light-text);
  display: flex;
  align-items: center;
  gap: 6px;
}

.strip-item span {
  color: #27AE60;
}

.result-form-lead {
  text-align: left;
}

.result-form-title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--c-light-text);
  margin-bottom: 6px;
  text-align: center;
}

.result-form-sub {
  font-size: 0.88rem;
  color: var(--c-light-muted);
  text-align: center;
  margin-bottom: 20px;
}

.form-row-dual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

/* Console Footer Navigation */
.calc-console-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--c-light-border);
  padding-top: 24px;
  margin-top: auto;
}

.btn-calc-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--c-light-muted);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: color 140ms var(--ease-out), transform 140ms var(--ease-out);
  user-select: none;
  -webkit-user-select: none;
}

@media (hover: hover) and (pointer: fine) {
  .btn-calc-back:hover {
    color: var(--c-light-text);
    transform: translateX(-2px);
  }
}

.btn-calc-back:active {
  transform: scale(0.95);
  transition-duration: 70ms;
}

.calc-footer-info {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  color: var(--c-light-muted);
}

.info-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--c-accent-copper);
}

.btn-calc-next {
  padding: 14px 34px;
}

@media (max-width: 1024px) {
  .calculator-editorial-container {
    grid-template-columns: 1fr;
  }
  .calc-side-teaser {
    order: 2;
  }
  .calc-main-console {
    order: 1;
    padding: 30px;
  }
}

@media (max-width: 768px) {
  .architectural-options-grid {
    grid-template-columns: 1fr;
  }
  .console-question-title {
    font-size: 1.7rem;
  }
  .gauge-huge-num {
    font-size: 3.5rem;
  }
  .calc-header-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }
  .calc-timeline-progress {
    width: 100%;
  }
  .form-row-dual {
    grid-template-columns: 1fr;
  }
  .pkg-description {
    margin-left: 0;
  }
  .pkg-perk-badge {
    margin-left: 0;
  }
}

/* ==========================================================================
   Section 4: Dark Contrast Highlight (2900 ₽ / м²)
   ========================================================================== */
.price-banner-section {
  background-color: var(--c-dark-bg);
  padding: 100px 0;
  position: relative;
  border-top: 1px solid var(--c-dark-border);
  border-bottom: 1px solid var(--c-dark-border);
}

.price-banner-box {
  border: 1px solid rgba(197, 164, 126, 0.35);
  padding: 70px 40px;
  position: relative;
  text-align: center;
  background: radial-gradient(circle at center, rgba(35, 34, 31, 0.9) 0%, rgba(20, 19, 18, 0.95) 100%);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-dark);
}

.price-accent-number {
  font-family: var(--font-serif);
  font-size: 7rem;
  font-weight: 400;
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.price-accent-number em {
  font-style: italic;
  color: var(--c-accent-gold);
}

.price-banner-sub {
  font-size: 1.35rem;
  color: var(--c-dark-muted);
  max-width: 600px;
  margin: 0 auto 34px;
}

.price-banner-sub strong {
  color: #FFFFFF;
}

/* ==========================================================================
   Section 5: Isometric Cutaway & Stage Breakdown
   ========================================================================== */
.stages-section {
  padding: 120px 0;
  background-color: var(--c-light-bg);
}

.stages-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.isometric-visual-box {
  position: relative;
  background: #FFFFFF;
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--c-light-border);
  box-shadow: var(--shadow-premium);
}

.isometric-img {
  width: 100%;
  border-radius: var(--radius-sm);
  transition: transform 0.6s ease;
}

.isometric-visual-box:hover .isometric-img {
  transform: scale(1.02);
}

.stage-pills-list {
  display: flex;
  gap: 10px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.stage-pill-btn {
  padding: 10px 18px;
  background-color: var(--c-light-card);
  border: 1px solid var(--c-light-border);
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--c-light-muted);
  transition: transform 140ms var(--ease-out), background-color 140ms var(--ease-out), border-color 140ms var(--ease-out), color 140ms var(--ease-out);
  user-select: none;
  -webkit-user-select: none;
  cursor: pointer;
}

@media (hover: hover) and (pointer: fine) {
  .stage-pill-btn:hover {
    background-color: var(--c-accent-gold);
    border-color: var(--c-accent-gold);
    color: #171512;
    transform: translateY(-1px);
  }
}

.stage-pill-btn:active {
  transform: scale(0.95);
  transition-duration: 70ms;
}

.stage-pill-btn.active {
  background-color: var(--c-accent-gold);
  border-color: var(--c-accent-gold);
  color: #171512;
}

.stage-details-card {
  background-color: #FFFFFF;
  color: var(--c-light-text);
  border-radius: var(--radius-sm);
  padding: 32px;
  border: 1px solid var(--c-light-border);
  box-shadow: var(--shadow-subtle);
  transition: opacity 160ms var(--ease-out), filter 160ms var(--ease-out), transform 160ms var(--ease-out);
}

.stage-content-title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--c-light-text);
  margin-bottom: 12px;
}

#stageDescription {
  color: #555047 !important;
  font-size: 0.95rem;
  line-height: 1.6;
}

.stage-checklist {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 20px 0 28px;
}

.stage-check-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--c-light-text);
}

.stage-check-item span {
  color: var(--c-light-text);
}

.stage-check-item svg {
  color: #27AE60;
  flex-shrink: 0;
}

/* ==========================================================================
   Section 6: Portfolio Showcase (Masonry / Editorial Grid)
   ========================================================================== */
.portfolio-section {
  padding: 120px 0;
  background-color: var(--c-dark-bg);
}

.portfolio-filter-tabs {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 24px;
  background: transparent;
  border: 1px solid var(--c-dark-border);
  color: var(--c-dark-muted);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: transform 140ms var(--ease-out), border-color 140ms var(--ease-out), color 140ms var(--ease-out), background-color 140ms var(--ease-out);
  user-select: none;
  -webkit-user-select: none;
  cursor: pointer;
}

@media (hover: hover) and (pointer: fine) {
  .filter-btn:hover {
    border-color: var(--c-accent-gold);
    color: #FFFFFF;
    background-color: rgba(197, 164, 126, 0.1);
    transform: translateY(-1px);
  }
}

.filter-btn:active {
  transform: scale(0.95);
  transition-duration: 70ms;
}

.filter-btn.active {
  border-color: var(--c-accent-gold);
  color: #FFFFFF;
  background-color: rgba(197, 164, 126, 0.15);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.project-card {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: var(--c-dark-surface);
  border: 1px solid var(--c-dark-border);
  transition: transform 200ms var(--ease-out), border-color 200ms var(--ease-out), box-shadow 200ms var(--ease-out);
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

@media (hover: hover) and (pointer: fine) {
  .project-card:hover {
    transform: translateY(-5px);
    border-color: rgba(197, 164, 126, 0.45);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
  }
}

.project-card:active {
  transform: scale(0.985);
  transition-duration: 70ms;
}

.project-thumb-box {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
}

.project-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 450ms var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .project-card:hover .project-thumb {
    transform: scale(1.05);
  }
}

.project-overlay-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background-color: rgba(20, 19, 18, 0.8);
  backdrop-filter: blur(8px);
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.72rem;
  color: var(--c-accent-gold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}

.project-info-box {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-name {
  font-family: var(--font-serif);
  font-size: 1.55rem;
  font-weight: 500;
  color: #FFFFFF;
  margin-bottom: 8px;
}

.project-sub {
  font-size: 0.84rem;
  color: var(--c-dark-muted);
  margin-bottom: 18px;
}

.project-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--c-dark-border);
  padding-top: 16px;
  margin-top: auto;
}

.project-meta-val {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--c-accent-gold);
}

.project-meta-label {
  font-size: 0.75rem;
  color: var(--c-dark-muted);
}

/* ==========================================================================
   Section 7: Transparent Video & Digital Control
   ========================================================================== */
.control-section {
  padding: 120px 0;
  background-color: #171614;
  position: relative;
  overflow: hidden;
}

.control-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 60px;
  align-items: center;
}

.control-cams-card {
  background-color: var(--c-dark-surface);
  border: 1px solid var(--c-dark-border);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-dark);
}

.cam-monitor-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--c-dark-border);
  margin-bottom: 14px;
}

.cam-live-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 700;
  color: #E74C3C;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: #E74C3C;
  border-radius: 50%;
  animation: liveBlink 1.5s infinite;
}

@keyframes liveBlink {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.3; transform: scale(1.3); }
}

.cam-stream-player {
  position: relative;
  aspect-ratio: 16/10;
  background-color: #000000;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.cam-stream-player img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.85;
  transition: opacity 160ms var(--ease-out), filter 160ms var(--ease-out);
}

.cam-controls-bar {
  display: flex;
  gap: 8px;
  margin-top: 14px;
}

.cam-selector-btn {
  flex: 1;
  padding: 8px;
  background-color: var(--c-dark-card);
  border: 1px solid var(--c-dark-border);
  border-radius: var(--radius-sm);
  font-size: 0.76rem;
  color: var(--c-dark-muted);
  transition: transform 140ms var(--ease-out), border-color 140ms var(--ease-out), color 140ms var(--ease-out);
  user-select: none;
  -webkit-user-select: none;
  cursor: pointer;
}

@media (hover: hover) and (pointer: fine) {
  .cam-selector-btn:hover {
    border-color: var(--c-accent-gold);
    color: #FFFFFF;
    transform: translateY(-1px);
  }
}

.cam-selector-btn:active {
  transform: scale(0.96);
  transition-duration: 70ms;
}

.cam-selector-btn.active {
  border-color: var(--c-accent-gold);
  color: #FFFFFF;
}

/* ==========================================================================
   Section 8: Own Furniture Manufacturing Workshop
   ========================================================================== */
.workshop-section {
  padding: 120px 0;
  background-color: var(--c-light-bg);
}

.workshop-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.workshop-visual-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-premium);
}

.workshop-badge {
  position: absolute;
  top: 24px;
  right: 24px;
  background: rgba(20, 19, 18, 0.9);
  backdrop-filter: blur(12px);
  color: var(--c-accent-gold);
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(197, 164, 126, 0.4);
  text-align: center;
}

.workshop-badge-num {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
}

.workshop-badge-label {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.workshop-perks-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 32px 0 40px;
}

.workshop-perk-item {
  display: flex;
  gap: 16px;
}

.workshop-perk-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(197, 164, 126, 0.12);
  border: 1px solid rgba(197, 164, 126, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-accent-copper);
  flex-shrink: 0;
  transition: transform 160ms var(--ease-out), border-color 160ms var(--ease-out), background-color 160ms var(--ease-out);
}

.workshop-perk-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--c-accent-copper);
}

.workshop-perk-item:hover .workshop-perk-icon {
  transform: translateY(-2px);
  border-color: var(--c-accent-copper);
  background: rgba(197, 164, 126, 0.22);
}

.workshop-perk-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--c-light-text);
  margin-bottom: 5px;
  line-height: 1.3;
}

.workshop-perk-desc {
  font-size: 0.92rem;
  color: #555047;
  line-height: 1.55;
}

/* ==========================================================================
   Section 9: Showroom & Complimentary Taxi in Kurgan
   ========================================================================== */
.showroom-section {
  padding: 110px 0;
  background-color: #FFFFFF;
}

.showroom-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: stretch;
  background-color: var(--c-light-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--c-light-border);
  padding: 44px;
  box-shadow: var(--shadow-premium);
}

.showroom-photo-wrap {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
  min-height: 440px;
  display: flex;
}

.showroom-photo-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}

.showroom-photo-wrap:hover img {
  transform: scale(1.025);
}

.showroom-photo-badge {
  position: absolute;
  bottom: 18px;
  left: 18px;
  background: rgba(20, 19, 18, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: #FFFFFF;
  padding: 8px 16px;
  border-radius: 50px;
  border: 1px solid rgba(197, 164, 126, 0.4);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.35);
  pointer-events: none;
}

.showroom-form-wrap {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 8px 0 8px 12px;
}

.showroom-title {
  font-size: 2.35rem;
  line-height: 1.18;
  margin-bottom: 12px;
}

.showroom-desc {
  font-size: 0.98rem;
  color: #555047;
  line-height: 1.55;
  margin-bottom: 22px;
}

.showroom-form-wrap .lead-form-stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.taxi-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: rgba(212, 140, 91, 0.12);
  color: #8A4B20;
  border: 1px solid rgba(212, 140, 91, 0.3);
  font-weight: 600;
  font-size: 0.82rem;
  padding: 7px 16px;
  border-radius: 50px;
  margin-bottom: 16px;
  align-self: flex-start;
}

.taxi-badge svg {
  color: var(--c-accent-copper);
  flex-shrink: 0;
}

/* ==========================================================================
   Section 10: Location, Map & Footer
   ========================================================================== */
.map-section {
  padding: 100px 0;
  background-color: var(--c-dark-bg);
  position: relative;
}

.map-card-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background-color: var(--c-dark-surface);
  border: 1px solid var(--c-dark-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-dark);
}

.map-info-col {
  padding: 60px;
}

.map-contact-item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.map-contact-icon {
  width: 40px;
  height: 40px;
  background-color: var(--c-dark-card);
  border: 1px solid var(--c-dark-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-accent-gold);
  flex-shrink: 0;
}

.map-mockup-frame {
  position: relative;
  background-color: #21201D;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.map-mockup-frame iframe {
  width: 100%;
  height: 100%;
  border: none;
  filter: grayscale(0.8) contrast(1.2) invert(0.9);
}

/* Footer */
.footer {
  padding: 60px 0 40px;
  background-color: #0E0D0C;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  margin-bottom: 30px;
  flex-wrap: wrap;
  gap: 30px;
}

.footer-socials {
  display: flex;
  gap: 14px;
}

.social-link-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background-color: var(--c-dark-surface);
  border: 1px solid var(--c-dark-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  transition: var(--tr-fast);
}

.social-link-btn:hover {
  background-color: var(--c-accent-gold);
  color: #171512;
  transform: translateY(-2px);
}

.footer-nav-row {
  margin-bottom: 30px;
  padding-bottom: 25px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-nav-list a {
  color: var(--c-dark-muted);
  font-size: 0.88rem;
  transition: var(--tr-fast);
  text-decoration: none;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--c-dark-muted);
  flex-wrap: wrap;
  gap: 20px;
}

/* ==========================================================================
   Modals & Toast System
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(14, 13, 12, 0.84);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 220ms var(--ease-out), visibility 220ms var(--ease-out);
}

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

.modal-window {
  background-color: var(--c-dark-surface);
  border: 1px solid rgba(197, 164, 126, 0.35);
  border-radius: var(--radius-md);
  padding: 44px;
  max-width: 540px;
  width: 100%;
  position: relative;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.65), 0 0 35px rgba(197, 164, 126, 0.08);
  transform: translateY(12px) scale(0.96);
  opacity: 0;
  transform-origin: center center;
  transition: transform 220ms var(--ease-out), opacity 220ms var(--ease-out);
}

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

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--c-dark-border);
  border-radius: 50%;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  transition: transform 140ms var(--ease-out), background-color 140ms var(--ease-out), color 140ms var(--ease-out);
  user-select: none;
  -webkit-user-select: none;
}

@media (hover: hover) and (pointer: fine) {
  .modal-close-btn:hover {
    background-color: var(--c-accent-gold);
    color: #171512;
    transform: rotate(90deg);
  }
}

.modal-close-btn:active {
  transform: scale(0.92);
  transition-duration: 70ms;
}

/* Toast (Sonner Principles) */
.toast-notice {
  position: fixed;
  bottom: 28px;
  right: 28px;
  background: rgba(31, 30, 27, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(197, 164, 126, 0.4);
  color: #FFFFFF;
  padding: 16px 24px;
  border-radius: var(--radius-sm);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6), 0 0 20px rgba(197, 164, 126, 0.12);
  z-index: 2000;
  display: flex;
  align-items: center;
  gap: 14px;
  transform: translateY(16px) scale(0.96);
  opacity: 0;
  visibility: hidden;
  transition: transform 220ms var(--ease-out), opacity 200ms var(--ease-out), visibility 220ms;
}

.toast-notice.show {
  transform: translateY(0) scale(1);
  opacity: 1;
  visibility: visible;
}

/* ==========================================================================
   Section 10: FAQ Accordion (SEO & Knowledge Authority)
   ========================================================================== */
.faq-section {
  padding: 120px 0;
  background-color: var(--c-light-bg);
  position: relative;
  border-top: 1px solid var(--c-light-border);
}

.faq-accordion-container {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-accordion-item {
  background-color: #FFFFFF;
  border: 1px solid var(--c-light-border);
  border-radius: 4px;
  overflow: hidden;
  transition: border-color 180ms var(--ease-out), box-shadow 180ms var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .faq-accordion-item:hover {
    border-color: var(--c-accent-gold);
  }
}

.faq-accordion-item.active {
  border-color: var(--c-accent-copper);
  box-shadow: 0 10px 30px rgba(212, 140, 91, 0.08);
}

.faq-accordion-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 28px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  user-select: none;
  -webkit-user-select: none;
  transition: background-color 140ms var(--ease-out);
}

.faq-accordion-trigger:active {
  background-color: rgba(0, 0, 0, 0.02);
}

.faq-q-text {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--c-light-text);
  line-height: 1.3;
}

.faq-accordion-icon {
  font-size: 1.6rem;
  color: var(--c-accent-copper);
  transition: transform 220ms var(--ease-out);
  flex-shrink: 0;
  margin-left: 16px;
  font-weight: 300;
  line-height: 1;
}

.faq-accordion-item.active .faq-accordion-icon {
  transform: rotate(45deg);
}

.faq-accordion-content {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 220ms var(--ease-out), padding 220ms var(--ease-out);
  padding: 0 28px;
}

.faq-accordion-content > p {
  overflow: hidden;
  font-size: 0.95rem;
  color: #3D3933;
  line-height: 1.65;
}

.faq-accordion-item.active .faq-accordion-content {
  grid-template-rows: 1fr;
  padding: 0 28px 24px;
}

.faq-accordion-content p {
  font-size: 0.95rem;
  color: #6E685F;
  line-height: 1.65;
}

/* ==========================================================================
   Responsive Adaptations & Mobile Experience
   ========================================================================== */

/* --- 1240px Breakpoint (Laptops & Small Desktops) --- */
@media (max-width: 1240px) {
  .nav-links-list {
    gap: 16px;
  }
  .nav-link {
    font-size: 0.82rem;
  }
  .header-contacts {
    gap: 14px;
  }
  .btn-header-call {
    padding: 8px 16px;
    font-size: 0.76rem;
  }
}

/* --- 1080px Breakpoint (Tablets & Mobile Drawer Activation) --- */
@media (max-width: 1080px) {
  .desktop-nav {
    display: none !important;
  }
  .header-contacts .btn-header-call {
    display: none;
  }
  .burger-btn {
    display: flex;
  }
  .header-inner {
    justify-content: space-between;
  }
}

/* --- 1024px Breakpoint (Tablet Landscape) --- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-title {
    font-size: 3.4rem;
  }
  .hero-monogram-container {
    max-width: 500px;
    margin: 0 auto;
  }
  .catalog-album-wrap, .stages-grid, .workshop-grid, .showroom-grid, .map-card-box, .control-grid {
    grid-template-columns: 1fr;
    padding: 30px;
  }
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .showroom-form-wrap {
    padding-left: 0;
    margin-top: 24px;
  }
  .calculator-editorial-container {
    grid-template-columns: 1fr;
  }
  .calc-side-teaser {
    order: 2;
  }
  .calc-main-console {
    order: 1;
    padding: 30px;
  }
}

/* --- 768px Breakpoint (Tablet Portrait & Large Phones) --- */
@media (max-width: 768px) {
  /* Hide decorative hairline grid on narrow viewports to avoid visual clutter */
  .hairline-grid::before,
  .hairline-grid::after {
    display: none !important;
  }

  /* Compact, unified vertical rhythm across all sections — fixes "endless ribbon" */
  .catalog-section,
  .quiz-section,
  .stages-section,
  .portfolio-section,
  .control-section,
  .workshop-section,
  .showroom-section,
  .faq-section {
    padding: 56px 0 !important;
  }

  .price-banner-section,
  .map-section {
    padding: 48px 0 !important;
  }

  .section-head-center {
    margin: 0 auto 30px;
  }
  .section-tag {
    margin-bottom: 8px;
    font-size: 0.72rem;
  }
  .section-title {
    font-size: clamp(1.85rem, 6.2vw, 2.35rem);
    line-height: 1.18;
    margin-bottom: 12px;
  }
  .section-desc {
    font-size: 0.95rem;
    line-height: 1.5;
  }

  .header {
    padding-top: max(14px, env(safe-area-inset-top, 14px));
    padding-bottom: 14px;
  }
  .header-phone-box {
    display: none;
  }
  .header-phone-icon-btn {
    display: inline-flex;
  }

  .hero-section {
    padding: 105px 0 48px;
    min-height: auto;
  }
  .hero-title {
    font-size: clamp(2.1rem, 7.5vw, 2.9rem);
    line-height: 1.15;
    margin-bottom: 16px;
  }
  .hero-desc {
    font-size: 0.98rem;
    line-height: 1.55;
    margin-bottom: 24px;
  }
  .hero-actions {
    margin-bottom: 32px;
  }
  .hero-architectural-e {
    font-size: clamp(12rem, 35vw, 20rem);
  }

  .price-accent-number {
    font-size: clamp(2.4rem, 10vw, 4.4rem);
    line-height: 1;
    word-break: normal;
  }
  .price-banner-box {
    padding: 40px 22px;
  }
  .price-banner-sub {
    font-size: 1.05rem;
    margin-bottom: 24px;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
    gap: 16px;
    padding-top: 22px;
  }

  /* Portfolio compact rhythm */
  .portfolio-filter-tabs {
    margin-bottom: 24px;
    gap: 8px;
  }
  .portfolio-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  /* Universal card padding and gap compaction */
  .catalog-album-wrap,
  .stages-grid,
  .workshop-grid,
  .showroom-grid,
  .map-card-box,
  .control-grid {
    gap: 24px;
    padding: 24px;
  }

  /* Calculator compaction */
  .calculator-card {
    padding: 22px;
  }
  .architectural-options-grid {
    grid-template-columns: 1fr;
    gap: 12px;
    margin-bottom: 20px;
  }
  .console-question-title {
    font-size: 1.5rem;
    margin-bottom: 18px;
  }
  .gauge-huge-num {
    font-size: clamp(2.4rem, 9.5vw, 3.2rem);
  }
  .calc-header-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 22px;
  }
  .calc-timeline-progress {
    width: 100%;
  }
  .form-row-dual {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .pkg-description,
  .pkg-perk-badge {
    margin-left: 0;
  }

  /* Showroom block on tablets */
  .showroom-photo-wrap {
    min-height: 280px;
    max-height: 380px;
  }
  .showroom-form-wrap {
    padding: 0;
  }
  .showroom-title {
    font-size: 2rem;
  }
  .showroom-desc {
    margin-bottom: 20px;
  }

  /* Stages & Workshop compacting */
  .stage-details-card {
    padding: 22px;
  }
  .workshop-perks-list {
    margin: 20px 0 26px;
    gap: 16px;
  }

  /* Map column */
  .map-info-col {
    padding: 28px 22px;
  }
  .map-mockup-frame {
    min-height: 300px;
  }

  /* Modal & Toast on mobile */
  .modal-window {
    padding: 30px 20px;
    max-width: calc(100vw - 32px);
  }
  .modal-close-btn {
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    font-size: 1.5rem;
  }
  .toast-notice {
    left: 16px;
    right: 16px;
    bottom: max(16px, env(safe-area-inset-bottom, 16px));
    justify-content: center;
  }
}

/* --- 600px Breakpoint (Phablets & Compact Screens) --- */
@media (max-width: 600px) {
  .cam-controls-bar {
    flex-direction: column;
    gap: 8px;
  }
  .cam-selector-btn {
    padding: 10px 14px;
    text-align: center;
  }
  .calc-console-footer {
    flex-wrap: wrap;
    gap: 12px;
    padding-top: 18px;
  }
  .btn-calc-next {
    width: 100%;
    justify-content: center;
  }
  .calc-footer-info {
    width: 100%;
    justify-content: center;
    font-size: 0.8rem;
    order: -1;
  }
  .btn-calc-back {
    padding: 8px 0;
  }
}

/* --- 480px Breakpoint (Standard Mobile Devices e.g. iPhone 14/15, Pixel) --- */
@media (max-width: 480px) {
  /* Dense, premium mobile vertical rhythm — eliminates empty scroll ribbon */
  .catalog-section,
  .quiz-section,
  .stages-section,
  .portfolio-section,
  .control-section,
  .workshop-section,
  .showroom-section,
  .faq-section {
    padding: 42px 0 !important;
  }

  .price-banner-section,
  .map-section {
    padding: 34px 0 !important;
  }

  /* Safe Area Horizontal Insets: 20-24px generous breathing room */
  .container {
    padding-left: max(20px, env(safe-area-inset-left, 20px));
    padding-right: max(20px, env(safe-area-inset-right, 20px));
  }
  .header {
    padding-top: max(14px, env(safe-area-inset-top, 14px));
    padding-bottom: 14px;
    padding-left: 0;
    padding-right: 0;
  }
  .header-inner {
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
  }
  .logo-block {
    display: flex;
    flex-direction: column;
    flex-shrink: 1;
    min-width: 0;
    max-width: calc(100% - 95px);
  }
  .logo-title {
    font-size: 1.35rem;
    letter-spacing: 0.06em;
    line-height: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .logo-subtitle {
    font-size: 0.52rem;
    letter-spacing: 0.1em;
    margin-top: 3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .header-city-badge {
    display: none;
  }
  .header-phone-box {
    display: none !important;
  }
  .btn-header-call {
    display: none !important;
  }
  .header-contacts {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
  }
  .header-phone-icon-btn {
    display: inline-flex;
    width: 38px;
    height: 38px;
    min-width: 38px;
    min-height: 38px;
  }
  .burger-btn {
    width: 38px;
    height: 38px;
    min-width: 38px;
    min-height: 38px;
  }

  /* Minimalist Luxurious Hero Section */
  .hero-section {
    padding: 86px 0 34px;
    min-height: auto;
    position: relative;
    overflow: hidden;
  }

  /* Ambient Interior sofa & space backdrop glowing gently behind the headline */
  .hero-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('assets/images/hero_interior.jpg');
    background-position: center 15%;
    background-size: cover;
    background-repeat: no-repeat;
    opacity: 0.15;
    mix-blend-mode: luminosity;
    pointer-events: none;
    mask-image: linear-gradient(180deg, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.35) 45%, transparent 80%);
    -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.35) 45%, transparent 80%);
    z-index: 1;
  }

  .hero-grid {
    position: relative;
    z-index: 2;
    gap: 20px;
  }

  .hero-tag {
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    margin-bottom: 14px;
  }
  .hero-tag::before {
    width: 16px;
  }

  /* Lightened, dignified editorial headline with generous air */
  .hero-title {
    font-size: clamp(1.75rem, 6.8vw, 2.15rem);
    line-height: 1.28;
    font-weight: 400;
    letter-spacing: 0.005em;
    color: #FFFFFF;
    margin-bottom: 16px;
    text-wrap: balance;
  }
  .hero-title em {
    font-style: italic;
    font-weight: 300;
    color: var(--c-accent-gold);
  }

  /* Airy, breathable editorial description */
  .hero-desc {
    font-size: 0.88rem;
    line-height: 1.7;
    letter-spacing: 0.025em;
    color: rgba(243, 239, 230, 0.72);
    font-weight: 300;
    max-width: 100%;
    margin-bottom: 22px;
    text-wrap: pretty;
  }

  /* Sleek, architectural, non-bulky buttons */
  .hero-actions {
    display: flex;
    flex-direction: column;
    width: 100%;
    gap: 9px;
    margin-bottom: 22px;
  }
  .hero-actions .btn-primary,
  .hero-actions .btn-secondary,
  .btn-primary,
  .btn-secondary {
    border-radius: 2px;
  }
  .hero-actions .btn-primary,
  .hero-actions .btn-secondary {
    width: 100%;
    justify-content: center;
    text-align: center;
    padding: 12px 18px;
    min-height: 45px;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    font-weight: 600;
  }
  .hero-actions .btn-primary {
    box-shadow: 0 4px 16px rgba(197, 164, 126, 0.2);
  }
  .hero-actions .btn-secondary {
    border-color: rgba(255, 255, 255, 0.16);
    color: rgba(243, 239, 230, 0.9);
  }

  /* Hero Visual Card with soft gradient fade into advantages */
  .hero-visual {
    position: relative;
    width: 100%;
    margin-bottom: 18px;
    z-index: 2;
  }
  .hero-monogram-container {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    max-height: 220px;
    border-radius: 3px;
    overflow: hidden;
    border: 1px solid rgba(197, 164, 126, 0.2);
    box-shadow: 0 14px 32px rgba(0, 0, 0, 0.4);
    mask-image: linear-gradient(to bottom, black 72%, rgba(0,0,0,0.2) 92%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, black 72%, rgba(0,0,0,0.2) 92%, transparent 100%);
  }
  .hero-image-underlay {
    object-position: center 25%;
  }
  .hero-architectural-e {
    font-size: clamp(6.5rem, 22vw, 9rem);
    opacity: 0.15;
    right: -2%;
    bottom: -6%;
  }
  .hero-floating-badge {
    left: 8px;
    right: 8px;
    bottom: 8px;
    max-width: none;
    padding: 8px 12px;
    background: rgba(24, 23, 21, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(197, 164, 126, 0.25);
    border-radius: 2px;
  }
  .floating-badge-badge {
    font-size: 0.58rem;
    letter-spacing: 0.12em;
    margin-bottom: 2px;
  }
  .floating-badge-text {
    font-size: 0.72rem;
    line-height: 1.35;
    color: rgba(255, 255, 255, 0.88);
  }

  /* Compact 3-Column Luxury Metrics Flow */
  .hero-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    z-index: 2;
  }
  .metric-item-num {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    font-weight: 500;
    line-height: 1.1;
    color: var(--c-accent-gold);
  }
  .metric-item-label {
    font-size: 0.65rem;
    line-height: 1.25;
    color: var(--c-dark-muted);
    margin-top: 3px;
  }

  /* Section headers compacting */
  .section-head-center {
    margin: 0 auto 22px;
  }
  .section-title {
    font-size: clamp(1.7rem, 6.4vw, 2.05rem);
    margin-bottom: 8px;
  }
  .section-desc {
    font-size: 0.88rem;
    line-height: 1.45;
  }

  /* Card boxes compacting */
  .catalog-album-wrap,
  .stages-grid,
  .workshop-grid,
  .showroom-grid,
  .map-card-box,
  .control-grid {
    gap: 18px;
    padding: 18px 14px;
    border-radius: 3px;
  }

  .calc-side-teaser {
    padding: 18px 14px;
  }
  .calc-main-console {
    padding: 18px 14px;
  }
  .arch-option-tile {
    padding: 14px 12px;
    border-radius: 3px;
  }
  .arch-package-card {
    padding: 14px 12px;
    border-radius: 3px;
  }
  .stage-details-card {
    padding: 18px 14px;
  }

  /* Showroom in compact mobile */
  .showroom-photo-wrap {
    min-height: 210px;
    max-height: 260px;
  }
  .showroom-title {
    font-size: 1.7rem;
    margin-bottom: 8px;
  }
  .showroom-desc {
    font-size: 0.9rem;
    margin-bottom: 16px;
    line-height: 1.45;
  }

  /* Portfolio compacting */
  .portfolio-filter-tabs {
    margin-bottom: 16px;
    gap: 6px;
  }
  .filter-btn {
    padding: 7px 13px;
    font-size: 0.76rem;
    border-radius: 2px;
  }
  .portfolio-grid {
    gap: 16px;
  }
  .project-info-box {
    padding: 16px 14px;
  }

  .workshop-badge {
    top: 10px;
    right: 10px;
    padding: 6px 10px;
    border-radius: 2px;
  }
  .workshop-badge-num {
    font-size: 1.35rem;
  }
  .workshop-perks-list {
    margin: 14px 0 18px;
    gap: 12px;
  }

  .stage-pills-list {
    gap: 6px;
    margin-bottom: 18px;
  }
  .stage-pill-btn {
    padding: 7px 12px;
    font-size: 0.76rem;
    border-radius: 2px;
  }

  .map-info-col {
    padding: 18px 14px;
  }
  .map-mockup-frame {
    min-height: 230px;
  }

  .faq-accordion-container {
    gap: 8px;
  }
  .faq-accordion-header {
    padding: 14px 16px;
    font-size: 0.95rem;
  }
  .faq-accordion-item.active .faq-accordion-content {
    padding: 0 16px 16px;
  }

  .modal-window {
    padding: 26px 18px;
    border-radius: 3px;
    max-width: calc(100vw - 44px);
  }

  .footer {
    padding: 34px 0 20px;
  }
  .footer-top {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding-bottom: 20px;
    margin-bottom: 16px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 8px;
  }
}

/* --- 360px Breakpoint (Compact Devices e.g. iPhone SE, Fold Clamshell) --- */
@media (max-width: 360px) {
  .logo-title {
    font-size: 1.3rem;
  }
  .hero-tag {
    font-size: 0.68rem;
  }
  .hero-title {
    font-size: 1.75rem;
    line-height: 1.25;
  }
  .price-accent-number {
    font-size: 2.15rem;
  }
  .teaser-big-num {
    font-size: 3.8rem;
  }
  .hero-metrics {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

/* ==========================================================================
   Accessibility & Reduced Motion (Emil Kowalski Philosophy)
   ========================================================================== */
@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;
  }
}