/* ===== ATELIER LINE — design studio test bench ===== */

:root {
  --bg: #f7f3ec;
  --bg-alt: #efe8db;
  --surface: #ffffff;
  --text: #2b2620;
  --text-muted: #6b6257;
  --accent: #b5622f;
  --accent-dark: #8f4c23;
  --border: #e3dbca;
  --radius-s: 6px;
  --radius-m: 12px;
  --radius-l: 20px;
  --shadow: 0 10px 30px -14px rgba(43, 38, 32, 0.25);
  --serif: Georgia, "Times New Roman", "PT Serif", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --max-width: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

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

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

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.2;
  margin: 0 0 .5em;
}

p {
  margin: 0 0 1em;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 12px;
}

.section {
  padding: 72px 0;
}

.section-head {
  max-width: 640px;
  margin: 0 0 40px;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

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

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .15s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-dark);
}

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

.btn-outline:hover {
  background: var(--text);
  color: var(--bg);
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: .6;
  cursor: not-allowed;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 243, 236, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
  gap: 24px;
}

.brand {
  font-family: var(--serif);
  font-size: 22px;
  letter-spacing: .08em;
  white-space: nowrap;
}

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

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.main-nav a {
  font-size: 15px;
  color: var(--text);
  position: relative;
  padding: 4px 0;
}

.main-nav a.active,
.main-nav a:hover {
  color: var(--accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
}

.lang-switch a {
  padding: 4px 7px;
  border-radius: 6px;
  color: var(--text-muted);
}

.lang-switch a.active {
  color: var(--text);
  background: var(--bg-alt);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  font-size: 18px;
}

/* ---------- Hero ---------- */

.hero {
  padding: 88px 0 64px;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 48px;
  align-items: center;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: 20px;
}

.hero p.lead {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 46ch;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-art {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.hero-art img {
  border-radius: var(--radius-m);
  box-shadow: var(--shadow);
  height: 100%;
  object-fit: cover;
}

.hero-art a:nth-child(1) {
  grid-row: 1 / 3;
}

/* ---------- Stats ---------- */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 40px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stat {
  text-align: center;
}

.stat strong {
  display: block;
  font-family: var(--serif);
  font-size: 34px;
  color: var(--accent);
}

.stat span {
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: .03em;
}

/* ---------- Grids / cards ---------- */

.grid {
  display: grid;
  gap: 28px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.project-card {
  background: var(--surface);
  border-radius: var(--radius-m);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: transform .18s ease;
}

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

.project-card .thumb {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.project-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s ease;
}

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

.project-card .body {
  padding: 20px 22px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-card .tag {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 6px;
}

.project-card h3 {
  font-size: 20px;
  margin-bottom: 8px;
}

.project-card .meta {
  margin-top: auto;
  padding-top: 14px;
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  border-top: 1px dashed var(--border);
}

/* ---------- Filters ---------- */

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}

.filters a {
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 14px;
  color: var(--text-muted);
}

.filters a.active,
.filters a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ---------- Steps ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.step {
  position: relative;
  padding-left: 4px;
}

.step .num {
  font-family: var(--serif);
  font-size: 40px;
  color: var(--accent);
  opacity: .5;
  margin-bottom: 8px;
}

.step h3 {
  font-size: 19px;
  margin-bottom: 8px;
}

.step p {
  color: var(--text-muted);
  font-size: 15px;
  margin: 0;
}

/* ---------- Project detail ---------- */

.breadcrumb {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.breadcrumb a:hover {
  color: var(--accent);
}

.project-hero img {
  width: 100%;
  border-radius: var(--radius-l);
  box-shadow: var(--shadow);
  aspect-ratio: 16/9;
  object-fit: cover;
  margin-bottom: 40px;
}

.project-meta-bar {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  padding: 24px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
}

.project-meta-bar div span {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.project-meta-bar div strong {
  font-size: 16px;
  font-weight: 600;
}

.project-body {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 48px;
  margin-bottom: 56px;
}

.project-body .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.project-body .tags span {
  font-size: 13px;
  padding: 6px 14px;
  background: var(--bg-alt);
  border-radius: 999px;
  color: var(--text-muted);
}

.gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 56px;
}

.gallery img {
  border-radius: var(--radius-m);
  box-shadow: var(--shadow);
  aspect-ratio: 4/3;
  object-fit: cover;
}

/* ---------- CTA band ---------- */

.cta-band {
  background: var(--text);
  color: var(--bg);
  border-radius: var(--radius-l);
  padding: 56px;
  text-align: center;
}

.cta-band h2 {
  color: #fff;
}

.cta-band p {
  color: #d9d3c6;
  max-width: 50ch;
  margin: 0 auto 28px;
}

.cta-band .btn-outline {
  border-color: #fff;
  color: #fff;
}

.cta-band .btn-outline:hover {
  background: #fff;
  color: var(--text);
}

/* ---------- FAQ ---------- */

.faq-list {
  max-width: 780px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-item summary {
  cursor: pointer;
  padding: 22px 0;
  font-family: var(--serif);
  font-size: 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 22px;
  color: var(--accent);
  margin-left: 16px;
  transition: transform .2s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  padding-bottom: 22px;
  color: var(--text-muted);
  max-width: 68ch;
}

/* ---------- Pricing ---------- */

.price-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 56px;
}

.price-card {
  background: var(--surface);
  border-radius: var(--radius-m);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  border: 2px solid transparent;
  display: flex;
  flex-direction: column;
}

.price-card.popular {
  border-color: var(--accent);
}

.price-card .badge {
  align-self: flex-start;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.price-card h3 {
  font-size: 22px;
  margin-bottom: 6px;
}

.price-card .price {
  font-family: var(--serif);
  font-size: 32px;
  color: var(--accent);
  margin-bottom: 4px;
}

.price-card .price small {
  font-size: 14px;
  color: var(--text-muted);
  font-family: var(--sans);
}

.price-card .desc {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 20px;
}

.price-card ul {
  margin-bottom: 24px;
  flex: 1;
}

.price-card li {
  padding: 8px 0;
  border-top: 1px dashed var(--border);
  font-size: 14px;
}

.price-card li:first-child {
  border-top: none;
}

.addons-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border-radius: var(--radius-m);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.addons-table td {
  padding: 16px 22px;
  border-bottom: 1px solid var(--border);
  font-size: 15px;
}

.addons-table tr:last-child td {
  border-bottom: none;
}

.addons-table td:last-child {
  text-align: right;
  color: var(--accent);
  font-weight: 600;
  white-space: nowrap;
}

.note-box {
  margin-top: 24px;
  padding: 18px 22px;
  background: var(--bg-alt);
  border-radius: var(--radius-m);
  color: var(--text-muted);
  font-size: 14px;
}

/* ---------- Calculator ---------- */

.calc-layout {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 40px;
  align-items: flex-start;
}

.calc-card {
  background: var(--surface);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow);
  padding: 32px;
}

.field-group {
  margin-bottom: 26px;
}

.field-group label.main-label {
  display: block;
  font-weight: 600;
  margin-bottom: 12px;
  font-size: 15px;
}

.range-row {
  display: flex;
  align-items: center;
  gap: 16px;
}

.range-row input[type="range"] {
  flex: 1;
  accent-color: var(--accent);
}

.range-row output {
  min-width: 72px;
  text-align: right;
  font-family: var(--serif);
  font-size: 20px;
  color: var(--accent);
}

.pill-options {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.pill-options input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.pill-options label {
  padding: 10px 18px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 14px;
  cursor: pointer;
  transition: all .15s ease;
}

.pill-options input:checked + label {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.checkbox-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.checkbox-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-s);
  font-size: 14px;
}

.checkbox-list li span.hint {
  margin-left: auto;
  color: var(--text-muted);
  font-size: 13px;
  white-space: nowrap;
}

.calc-result {
  position: sticky;
  top: 100px;
  background: var(--text);
  color: var(--bg);
  border-radius: var(--radius-m);
  padding: 32px;
}

.calc-result h3 {
  color: #fff;
  font-size: 20px;
  margin-bottom: 20px;
}

.calc-result .row {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-top: 1px solid rgba(255,255,255,0.15);
  font-size: 14px;
  color: #d9d3c6;
}

.calc-result .row:first-of-type {
  border-top: none;
}

.calc-result .total {
  margin-top: 16px;
  padding-top: 18px;
  border-top: 1px solid rgba(255,255,255,0.25);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.calc-result .total strong {
  font-family: var(--serif);
  font-size: 30px;
  color: #fff;
}

.calc-result .placeholder {
  color: #b6ae9f;
  font-size: 14px;
}

.calc-result .disclaimer {
  margin-top: 20px;
  font-size: 12px;
  color: #a89f8f;
}

.calc-addon-line {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  font-size: 13px;
  color: #cfc8b9;
}

/* ---------- Contacts ---------- */

.contacts-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
}

.form-card {
  background: var(--surface);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow);
  padding: 32px;
}

.form-row {
  margin-bottom: 20px;
}

.form-row label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
}

.form-row input,
.form-row textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-s);
  font-family: var(--sans);
  font-size: 15px;
  background: var(--bg);
}

.form-row input:focus,
.form-row textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.form-row.has-error input,
.form-row.has-error textarea {
  border-color: #c0392b;
}

.field-error {
  color: #c0392b;
  font-size: 13px;
  margin-top: 6px;
}

.alert {
  padding: 16px 20px;
  border-radius: var(--radius-s);
  margin-bottom: 24px;
  font-size: 14px;
}

.alert-success {
  background: #e6f2e6;
  color: #2c5e2c;
  border: 1px solid #b6d9b6;
}

.info-list {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.info-list .item span.label {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.info-list .item strong {
  font-size: 16px;
}

.social-row {
  display: flex;
  gap: 10px;
  margin-top: 24px;
}

.social-row a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
}

.social-row a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.demo-note {
  margin-top: 28px;
  font-size: 12px;
  color: var(--text-muted);
  padding: 14px 16px;
  background: var(--bg-alt);
  border-radius: var(--radius-s);
}

/* ---------- 404 ---------- */

.not-found {
  padding: 120px 0;
  text-align: center;
}

.not-found .eyebrow {
  display: block;
}

.not-found h1 {
  font-size: 44px;
}

/* ---------- Footer ---------- */

.site-footer {
  background: var(--text);
  color: #cfc8b9;
  padding: 56px 0 28px;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-grid .brand {
  color: #fff;
  margin-bottom: 10px;
}

.footer-grid p {
  color: #a89f8f;
  font-size: 14px;
}

.site-footer h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 16px;
  font-family: var(--sans);
  font-weight: 600;
}

.site-footer ul li {
  margin-bottom: 10px;
  font-size: 14px;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: #8a806f;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- Responsive ---------- */

@media (max-width: 960px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-art { display: none; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); row-gap: 24px; }
  .steps { grid-template-columns: 1fr; }
  .project-body { grid-template-columns: 1fr; }
  .project-meta-bar { grid-template-columns: repeat(3, 1fr); }
  .price-cards { grid-template-columns: 1fr; }
  .calc-layout { grid-template-columns: 1fr; }
  .calc-result { position: static; }
  .contacts-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
  .main-nav { display: none; }
  .nav-toggle { display: block; }
  .site-header.open .main-nav {
    display: flex;
    position: absolute;
    top: 78px;
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 20px 24px 28px;
    border-bottom: 1px solid var(--border);
    gap: 18px;
  }
  .hero h1 { font-size: 34px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .project-meta-bar { grid-template-columns: repeat(2, 1fr); }
  .gallery { grid-template-columns: 1fr; }
  .cta-band { padding: 36px 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
}