:root {
  --bg: #0c0c0c;
  --bg-elevated: #141414;
  --bg-card: #1a1a1a;
  --text: #f5f0e8;
  --text-muted: #a89f92;
  --gold: #c9a962;
  --gold-hover: #dbbc78;
  --border: rgba(201, 169, 98, 0.25);
  --radius: 4px;
  --font-display: "Cormorant Garamond", Georgia, serif;
  --font-body: "Inter", system-ui, sans-serif;
  --header-h: 72px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1200px, calc(100% - 48px));
  margin-inline: auto;
}

.section {
  padding: 96px 0;
}

.section-label {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 500;
  line-height: 1.15;
  margin: 0 0 24px;
  letter-spacing: 0.02em;
}

.section-subtitle {
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 0 48px;
}

/* Header */
.header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-h);
  background: rgba(12, 12, 12, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.logo__name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.logo__tag {
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.nav {
  display: flex;
  gap: 28px;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

.header__phone {
  font-size: 14px;
  white-space: nowrap;
}

.header__phone a {
  color: var(--gold);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 24px;
  cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
}

.btn--gold {
  background: var(--gold);
  color: #0c0c0c;
}

.btn--gold:hover {
  background: var(--gold-hover);
  transform: translateY(-1px);
}

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

.btn--outline:hover {
  background: rgba(201, 169, 98, 0.1);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(12, 12, 12, 0.4) 0%, rgba(12, 12, 12, 0.85) 60%, var(--bg) 100%),
    url("../images/hero-kitchen.jpg") center/cover;
  transform: scale(1.05);
  animation: heroZoom 20s ease-in-out infinite alternate;
}

@keyframes heroZoom {
  to { transform: scale(1.12); }
}

.hero__content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 64px;
  align-items: center;
  padding: 80px 0;
}

.hero__label {
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 500;
  line-height: 1.1;
  margin: 0 0 24px;
  text-transform: uppercase;
}

.hero__lead {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 32px;
  max-width: 520px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
}

.hero__tiles {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.tile {
  padding: 20px 16px;
  background: rgba(26, 26, 26, 0.7);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
  transition: border-color var(--transition), transform var(--transition);
}

.tile:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
}

.tile__title {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 8px;
}

.tile__text {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Form card */
.form-card {
  background: rgba(20, 20, 20, 0.92);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  backdrop-filter: blur(16px);
}

.form-card__title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin: 0 0 8px;
}

.form-card__subtitle {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font: inherit;
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--gold);
}

.form-card .btn {
  width: 100%;
  margin-top: 8px;
}

.form-message {
  margin-top: 12px;
  font-size: 14px;
  min-height: 1.4em;
}

.form-message--ok { color: #7cb87c; }
.form-message--err { color: #c87c7c; }

/* Split choice */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.split__panel {
  position: relative;
  min-height: 480px;
  padding: 48px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background-size: cover;
  background-position: center;
  isolation: isolate;
}

.split__panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(12, 12, 12, 0.2) 0%,
    rgba(12, 12, 12, 0.72) 40%,
    rgba(12, 12, 12, 0.96) 100%
  );
  z-index: 0;
}

.split__panel > * {
  position: relative;
  z-index: 1;
}

.split__panel--m {
  background-image: url("../images/panel-matte.jpg");
}

.split__panel--x {
  background-image: url("../images/panel-gloss.jpg");
}

.split__badge {
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--gold);
  margin-bottom: 12px;
}

.split__panel h3 {
  font-family: var(--font-display);
  font-size: 2rem;
  margin: 0 0 16px;
  color: var(--text);
}

.split__panel p {
  color: rgba(245, 240, 232, 0.82);
  margin-bottom: 20px;
}

.split__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.tag {
  font-size: 11px;
  padding: 6px 12px;
  border: 1px solid rgba(201, 169, 98, 0.45);
  border-radius: 999px;
  color: rgba(245, 240, 232, 0.88);
  background: rgba(12, 12, 12, 0.35);
}

.split__panel .btn--outline {
  border-color: var(--gold);
  color: var(--gold);
  background: rgba(12, 12, 12, 0.45);
}

/* Features grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.feature-item {
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.feature-item__num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  color: var(--gold);
  opacity: 0.5;
  line-height: 1;
  margin-bottom: 16px;
}

.feature-item h4 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 0 0 12px;
}

.feature-item p {
  color: var(--text-muted);
  font-size: 14px;
  margin: 0;
}

/* Comparison table */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.compare-table th,
.compare-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.compare-table th {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  background: var(--bg-elevated);
}

.compare-table td:first-child {
  color: var(--text-muted);
}

.compare-table .check {
  color: var(--gold);
}

/* Tabs & shades */
.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 32px;
}

.tab {
  padding: 10px 24px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: var(--radius);
  transition: all var(--transition);
}

.tab--active {
  background: var(--gold);
  border-color: var(--gold);
  color: #0c0c0c;
}

.shades-slider {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 16px;
  scroll-snap-type: x mandatory;
}

.shade {
  flex: 0 0 140px;
  scroll-snap-align: start;
  text-align: center;
}

.shade__swatch {
  width: 140px;
  height: 140px;
  border-radius: var(--radius);
  margin-bottom: 12px;
  border: 1px solid var(--border);
  transition: transform var(--transition);
}

.shade:hover .shade__swatch {
  transform: scale(1.05);
}

.shade__name {
  font-size: 13px;
  margin-bottom: 4px;
}

.shade__code {
  font-size: 11px;
  color: var(--text-muted);
}

/* Use cases */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.case-card {
  position: relative;
  aspect-ratio: 3/4;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elevated) center/cover no-repeat;
}

.case-card--1 { background-image: url("../images/case-kitchen.jpg"); }
.case-card--2 { background-image: url("../images/case-living.jpg"); }
.case-card--3 { background-image: url("../images/case-wardrobe.jpg"); }
.case-card--4 { background-image: url("../images/case-office.jpg"); }

.case-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(12, 12, 12, 0.9) 100%);
}

.case-card__content {
  position: absolute;
  inset: auto 0 0;
  z-index: 1;
  padding: 24px;
}

.case-card__num {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--gold);
  opacity: 0.6;
}

.case-card h4 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 8px 0;
}

.case-card p {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}

/* Choice cards */
.choice-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.choice-card {
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.choice-card h3 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: var(--gold);
  margin: 0 0 20px;
}

.choice-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.choice-card li {
  padding: 8px 0;
  padding-left: 20px;
  position: relative;
  color: var(--text-muted);
}

.choice-card li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--gold);
}

/* CTA band */
.cta-band {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  padding: 80px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.cta-band__image {
  aspect-ratio: 4/3;
  border-radius: var(--radius);
  background:
    url("../images/cta-samples.jpg") center/cover;
}

.cta-band__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 32px;
}

/* SEO block */
.seo-block {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
}

.seo-block details {
  margin-bottom: 16px;
}

.seo-block summary {
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 1.25rem;
  padding: 12px 0;
  color: var(--gold);
}

.seo-block p {
  color: var(--text-muted);
  font-size: 14px;
}

/* Footer */
.footer {
  padding: 64px 0 32px;
  border-top: 1px solid var(--border);
  background: var(--bg-elevated);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer h5 {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 16px;
}

.footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer li {
  margin-bottom: 8px;
}

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

.footer__bottom {
  padding-top: 32px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.socials {
  display: flex;
  gap: 16px;
  margin-top: 16px;
}

.socials a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  font-size: 12px;
  transition: border-color var(--transition);
}

.socials a:hover {
  border-color: var(--gold);
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-36px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Progress indicator */
.scroll-progress {
  position: fixed;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 50;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.scroll-progress__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  transition: all var(--transition);
}

.scroll-progress__dot--active {
  background: var(--gold);
  border-color: var(--gold);
  transform: scale(1.3);
}

.scroll-progress__num {
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  writing-mode: vertical-rl;
  margin-bottom: 8px;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero__content {
    grid-template-columns: 1fr;
  }

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

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

  .split,
  .choice-grid,
  .cta-band {
    grid-template-columns: 1fr;
  }

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

  .scroll-progress {
    display: none;
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
    position: fixed;
    inset: var(--header-h) 0 auto;
    flex-direction: column;
    padding: 24px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
  }

  .nav.open {
    display: flex;
  }

  .menu-toggle {
    display: block;
  }

  .header__phone span {
    display: none;
  }

  .features-grid,
  .cases-grid,
  .hero__tiles {
    grid-template-columns: 1fr;
  }

  .cta-band {
    padding: 32px;
  }

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