:root {
  --container: 1080px;
  --spacing: clamp(1.25rem, 4vw, 2.5rem);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.55;
}

h1, h2, h3 { font-family: var(--font-heading); line-height: 1.2; margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); }

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

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

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: .8rem 0; gap: 1rem;
}
.logo {
  font-family: var(--font-heading); font-weight: 700; font-size: 1.3rem;
  color: var(--color-text); text-decoration: none;
}
.logo span { color: var(--color-accent); }
.site-nav { display: flex; gap: 1.1rem; align-items: center; font-size: .95rem; flex-wrap: wrap; }
.site-nav a { color: var(--color-muted); text-decoration: none; transition: color .15s; }
.site-nav a:hover { color: var(--color-text); }
.site-nav a.phone { color: var(--color-accent); font-weight: 600; }

/* ---------- hero ---------- */
.hero {
  padding: clamp(3rem, 8vw, 6rem) 0;
  background:
    radial-gradient(60% 80% at 70% 0%, color-mix(in srgb, var(--color-accent) 14%, transparent), transparent 60%),
    var(--color-bg);
}
.hero-sub { max-width: 44ch; color: var(--color-muted); font-size: 1.05rem; }
.hero-actions { display: flex; gap: .8rem; flex-wrap: wrap; margin: 1.5rem 0 2rem; }
.hero-facts {
  list-style: none; padding: 0; margin: 0;
  display: flex; gap: 2rem; flex-wrap: wrap;
}
.hero-facts li { color: var(--color-muted); }
.hero-facts strong { color: var(--color-text); display: block; font-size: 1.1rem; }

/* ---------- buttons ---------- */
.btn {
  display: inline-block; border-radius: var(--radius);
  padding: .75rem 1.5rem; font-weight: 600; font-size: 1rem;
  text-decoration: none; cursor: pointer; border: 1px solid transparent;
  transition: transform .12s, background .15s, border-color .15s;
}
.btn:active { transform: scale(.98); }
.btn-primary { background: var(--color-accent); color: var(--color-bg); }
.btn-primary:hover { background: color-mix(in srgb, var(--color-accent) 85%, var(--color-text)); }
.btn-ghost { border-color: var(--color-border); color: var(--color-text); background: transparent; }
.btn-ghost:hover { border-color: var(--color-accent); color: var(--color-accent); }
.btn-block { width: 100%; }

/* ---------- sections ---------- */
.section { padding: clamp(2.5rem, 6vw, 4.5rem) 0; }
.section-sub { color: var(--color-muted); margin-top: -.25rem; }
.section-constructor { background: var(--color-surface); border-top: 1px solid var(--color-border); }
.section-form { background: var(--color-bg); border-top: 1px solid var(--color-border); }

.grid {
  display: grid; gap: 1.2rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.3rem;
}
.section-constructor .card, .section-constructor .builder-group {
  background: var(--color-bg);
}
.card-icon { font-size: 1.6rem; display: block; margin-bottom: .6rem; }
.card h3 { font-size: 1.1rem; margin-bottom: .4rem; }
.card p { color: var(--color-muted); font-size: .95rem; margin: 0; }

/* ---------- kitchen plans ---------- */
.plan {
  margin: 0; background: var(--color-bg); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 1.4rem; display: flex; flex-direction: column; gap: 1rem;
}
.plan figcaption { color: var(--color-muted); font-size: .9rem; text-align: center; }
.plan-shape {
  height: 70px; margin: 0 auto; position: relative; width: 100%; max-width: 150px;
  background: color-mix(in srgb, var(--color-accent) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-accent) 40%, transparent);
}
.plan-line { height: 16px !important; }
.plan-l { clip-path: polygon(0 0, 100% 0, 100% 35%, 40% 35%, 40% 100%, 0 100%); }
.plan-u { clip-path: polygon(0 0, 25% 0, 25% 35%, 75% 35%, 75% 0, 100% 0, 100% 100%, 0 100%); }
.plan-island { clip-path: polygon(0 0, 100% 0, 100% 25%, 0 25%, 35% 60%, 65% 60%, 65% 100%, 35% 100%); }

/* ---------- kitchen builder / конструктор ---------- */
.builder {
  display: grid; grid-template-columns: 1.6fr 1fr; gap: 1.5rem;
  margin-top: 1.8rem; align-items: start;
}
@media (max-width: 860px) { .builder { grid-template-columns: 1fr; } }

.builder-steps {
  display: grid; gap: 1rem;
}

.builder-group {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  margin: 0; display: grid; gap: .8rem; align-content: start;
}
.builder-group legend {
  font-family: var(--font-heading); font-weight: 600; font-size: 1rem;
  color: var(--color-text); padding: 0 .4rem;
}
.builder-group .builder-output { color: var(--color-accent); font-weight: 600; }

.option {
  display: flex; gap: .55rem; align-items: baseline; cursor: pointer;
  padding: .45rem .6rem; border-radius: calc(var(--radius) * .6);
  border: 1px solid transparent; transition: border-color .15s, background .15s;
}
.option:hover { background: color-mix(in srgb, var(--color-accent) 8%, transparent); }
.option:has(input:checked) {
  border-color: var(--color-accent);
  background: color-mix(in srgb, var(--color-accent) 12%, transparent);
}
.option input { width: auto; accent-color: var(--color-accent); }
.option span { font-size: .95rem; }
.option-note { color: var(--color-muted); font-size: .8rem; }

.builder-group input[type="range"] { width: 100%; padding: 0; border: none; accent-color: var(--color-accent); }

/* summary panel */
.builder-summary {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.4rem; display: grid; gap: 1.1rem;
  position: sticky; top: 70px;
}
@media (max-width: 860px) { .builder-summary { position: static; } }
.builder-summary h3 { font-size: 1.15rem; margin: 0; }

.summary-list {
  margin: 0; display: grid; gap: .55rem;
}
.summary-list > div {
  display: flex; justify-content: space-between; gap: 1rem;
  border-bottom: 1px dashed var(--color-border); padding-bottom: .45rem;
}
.summary-list dt { color: var(--color-muted); font-size: .88rem; }
.summary-list dd { margin: 0; font-size: .88rem; font-weight: 600; text-align: right; }

.summary-price {
  border: 1px solid color-mix(in srgb, var(--color-accent) 45%, transparent);
  background: color-mix(in srgb, var(--color-accent) 10%, transparent);
  border-radius: var(--radius);
  padding: 1rem; display: grid; gap: .25rem;
}
.summary-price span { color: var(--color-muted); font-size: .82rem; }
.summary-price strong { font-family: var(--font-heading); font-size: 1.7rem; color: var(--color-text); }
.summary-price small { color: var(--color-muted); font-size: .78rem; }

.builder-note { color: var(--color-muted); font-size: .82rem; margin: 0; }

/* ---------- form ---------- */
.form-wrap {
  display: grid; grid-template-columns: 1fr 1.2fr; gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
@media (max-width: 760px) { .form-wrap { grid-template-columns: 1fr; } }

.form-intro p { color: var(--color-muted); }
.steps { list-style: none; padding: 0; margin: 1.2rem 0 0; }
.steps li {
  color: var(--color-muted); padding: .55rem 0; border-bottom: 1px solid var(--color-border);
  display: flex; gap: .6rem; align-items: baseline;
}
.steps li strong { color: var(--color-accent); }

.form { display: grid; gap: 1.1rem; }
.field { display: grid; gap: .4rem; }
.field label { font-size: .9rem; color: var(--color-text); font-weight: 500; }

input, select, textarea {
  background: var(--color-bg); color: var(--color-text);
  border: 1px solid var(--color-border); border-radius: var(--radius);
  padding: .7rem .9rem; font: inherit; width: 100%;
  transition: border-color .15s;
}
.section-constructor input, .section-constructor select { background: var(--color-surface); }
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--color-accent);
}
textarea { resize: vertical; min-height: 80px; }
input::placeholder, textarea::placeholder { color: var(--color-muted); opacity: .7; }

.field.invalid input, .field.invalid select { border-color: #e2635f; }
.error { color: #e2635f; font-size: .82rem; min-height: 1em; }

.check { display: flex; gap: .55rem; align-items: flex-start; font-size: .85rem; color: var(--color-muted); }
.check input { width: auto; margin-top: .2rem; accent-color: var(--color-accent); }
.check .error { flex: 1; }
.check.invalid span.error { display: block; }

.form-note { color: var(--color-muted); font-size: .85rem; margin: 0; text-align: center; }

.form-filled {
  border-color: var(--color-accent);
}
.form-filled .field {
  animation: flash .8s ease;
}
@keyframes flash {
  0% { background: color-mix(in srgb, var(--color-accent) 25%, transparent); }
  100% { background: transparent; }
}

/* success state */
.form-success {
  background: var(--color-bg); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 2rem; text-align: center; display: grid; gap: .8rem; justify-items: center;
}
.form-success-icon {
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--color-accent); color: var(--color-bg);
  display: grid; place-items: center; font-size: 1.5rem; font-weight: 700;
}
.form-success p { color: var(--color-muted); margin: 0; }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--color-border); padding: 1.4rem 0; }
.footer-inner { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; color: var(--color-muted); font-size: .9rem; }
.footer-inner a { color: var(--color-accent); text-decoration: none; }

/* ---------- 3D projects ---------- */
.project-thumb {
  height: 150px; margin: 0 0 1rem;
  border-radius: var(--radius); overflow: hidden; position: relative;
  display: grid; place-items: center; font-size: 2.2rem;
  background:
    linear-gradient(135deg, var(--thumb-a, #2b3340) 0%, var(--thumb-b, #6fbf8b) 100%);
}
.project-thumb::after {
  content: "3D"; position: absolute; right: 10px; bottom: 8px;
  font-family: var(--font-heading); font-weight: 700; font-size: .75rem;
  letter-spacing: .08em;
  background: color-mix(in srgb, var(--color-bg) 70%, transparent);
  border: 1px solid var(--color-border);
  border-radius: 6px; padding: .15rem .45rem;
  color: var(--color-muted);
}
.gallery-note { color: var(--color-muted); font-size: .9rem; margin: 1.2rem 0 0; }

/* ---------- hero with photo ---------- */
.hero-grid {
  display: grid; grid-template-columns: 1.05fr .95fr;
  gap: clamp(2rem, 5vw, 3rem); align-items: center;
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
}
.hero-visual {
  margin: 0; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: 0 30px 60px -35px rgb(0 0 0 / .65);
}
.hero-visual img {
  width: 100%; aspect-ratio: 16 / 10; object-fit: cover;
}

/* ---------- project photos ---------- */
.project-thumb { height: 180px; }
.project-thumb img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; display: block;
}
.project-thumb::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, color-mix(in srgb, var(--color-bg) 55%, transparent));
  pointer-events: none;
}

/* ---------- project card buttons ---------- */
.project .viewer-btn { margin-top: 1rem; }

/* ---------- 3D viewer lightbox ---------- */
.lightbox { position: fixed; inset: 0; z-index: 100; }
.lightbox[hidden] { display: none; }
.lightbox-overlay { position: absolute; inset: 0; background: rgb(8 10 9 / .78); }

.lightbox-figure {
  position: relative;
  width: min(920px, 92vw);
  max-height: 84vh;
  margin: 0 auto;
  animation: lightbox-in .18s ease;
}
@keyframes lightbox-in {
  from { opacity: 0; transform: scale(.97); }
  to { opacity: 1; transform: none; }
}

.lightbox-figure img {
  width: 100%; max-height: calc(84vh - 56px);
  object-fit: cover; display: block;
  border-radius: var(--radius);
  background: var(--color-surface);
}

.lightbox-caption {
  position: absolute; left: 12px; bottom: 12px; right: 52px;
  margin: 0;
  background: color-mix(in srgb, var(--color-bg) 82%, transparent);
  border: 1px solid var(--color-border);
  border-radius: calc(var(--radius) * .6);
  padding: .45rem .7rem;
  font-size: .82rem; color: var(--color-muted);
  backdrop-filter: blur(6px);
}

.lightbox-close {
  position: absolute; top: 10px; right: 10px;
  width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid var(--color-border);
  background: color-mix(in srgb, var(--color-bg) 80%, transparent);
  color: var(--color-text); font-size: 1.3rem; line-height: 1; cursor: pointer;
  display: grid; place-items: center;
  transition: border-color .15s, color .15s;
}
.lightbox-close:hover { border-color: var(--color-accent); color: var(--color-accent); }

@media (max-width: 600px) {
  .lightbox-caption { right: 12px; bottom: -44px; }
}

/* ---------- styles section ---------- */
.style-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.style-card {
  display: flex; flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: .8rem;
}

.style-card img {
  width: 100%; aspect-ratio: 4 / 3;
  object-fit: cover; display: block;
  border-radius: calc(var(--radius) * .5);
}

.style-card h3 { margin: .8rem 0 .35rem; font-size: 1rem; }
.style-card p { margin: 0; font-size: .85rem; color: var(--color-muted); flex: 1; }
.style-card .style-order { margin-top: .9rem; }

@media (max-width: 900px) { .style-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .style-grid { grid-template-columns: 1fr; } }

/* ================= Конструктор: 3D-макет ================= */

.builder-3d {
  margin-top: calc(var(--space-l, 32px) * 1.2);
  padding: var(--space-m, 20px);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.builder-3d-head {
  max-width: 640px;
  margin-bottom: 14px;
}

.builder-3d-head h3 {
  margin: 0 0 6px;
  font-family: var(--font-heading);
  font-size: 1.15rem;
}

.builder-3d-head p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.builder-3d-view {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  max-width: 900px;
  margin: 0 auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: radial-gradient(circle at 50% 30%, #1a1d22, #0b0d10 75%);
  touch-action: none;
}

#kitchenCanvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: grab;
}

#kitchenCanvas:active {
  cursor: grabbing;
}

.builder-3d-hint {
  position: absolute;
  left: 10px;
  bottom: 10px;
  padding: 4px 10px;
  font-size: 0.72rem;
  color: var(--color-muted);
  background: color-mix(in srgb, var(--color-bg) 78%, transparent);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  pointer-events: none;
}

@media (max-width: 640px) {
  .builder-3d-view {
    aspect-ratio: 4 / 3;
  }
  .builder-3d-hint {
    display: none;
  }
}

/* миниатюры-образцы материалов и фурнитуры в конструкторе */
.option { align-items: flex-start; }
.option-thumb {
  flex: 0 0 auto; width: 44px; height: 44px; object-fit: cover;
  border-radius: calc(var(--radius) * .5);
  border: 1px solid var(--color-border);
  margin-top: .1rem;
}
@media (max-width: 480px) {
  .option-thumb { width: 38px; height: 38px; }
}

.form-error {
  color: #e2635f; font-size: .85rem; margin: .6rem 0 0; text-align: center;
  line-height: 1.4;
}

/* honeypot-поле против ботов: в DOM, но скрыто */
.form-hp { display: none; }