/* Ткань-Студио — страницы кейсов (общие стили) */
:root {
  --cream: #F5F2EC;
  --paper: #FAF7F1;
  --ink: #0A0A0A;
  --muted: #6B6357;
  --border: #DDD5C5;
  --accent: #FF3D2E;
  --r-lg: 22px;
  --container: 880px;
  --gutter: clamp(1.25rem, 4vw, 2rem);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body.case-page {
  font-family: 'Manrope', system-ui, sans-serif;
  background: var(--cream);
  color: var(--ink);
  line-height: 1.55;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.case-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px var(--gutter);
  background: rgba(245, 242, 236, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.case-nav-logo {
  height: 28px;
  width: auto;
}
.case-nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
  font-size: 14px;
  font-weight: 500;
}
.case-nav-links a:hover { color: var(--accent); }

.case-nav-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.7);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.case-nav-back:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: #fff;
}

.case-nav-start {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.case-nav-cta {
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff !important;
  font-weight: 600;
  font-size: 13px;
}
.case-nav-cta:hover { filter: brightness(0.95); }

.case-nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  cursor: pointer;
}
.case-nav-toggle span {
  display: block !important;
  position: static !important;
  width: 18px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transform: none !important;
  opacity: 1 !important;
}
.case-nav-toggle span + span { margin-top: 4px; }

.case-demo-cta {
  margin-top: 24px;
}
.case-demo-cta .case-nav-cta {
  display: inline-flex;
}

.case-hero {
  padding: clamp(48px, 8vw, 88px) var(--gutter) clamp(40px, 6vw, 64px);
  max-width: var(--container);
  margin: 0 auto;
}
.case-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}
.case-hero h1 {
  font-family: 'Unbounded', sans-serif;
  font-weight: 600;
  font-size: clamp(1.75rem, 4.5vw, 2.75rem);
  letter-spacing: -0.03em;
  line-height: 1.08;
  margin-bottom: 16px;
}
.case-hero .lead {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 52ch;
}
.case-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}
.case-meta-row strong {
  font-family: 'Unbounded', sans-serif;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.02em;
  text-transform: none;
  display: block;
  margin-top: 4px;
}

.case-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter) clamp(64px, 10vw, 100px);
}
.case-section {
  margin-bottom: clamp(40px, 6vw, 56px);
}
.case-section h2 {
  font-family: 'Unbounded', sans-serif;
  font-size: clamp(1.25rem, 2.4vw, 1.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--ink);
}
.case-section h3 {
  font-family: 'Unbounded', sans-serif;
  font-size: 1.05rem;
  font-weight: 600;
  margin: 24px 0 10px;
}
.case-section p,
.case-section li {
  color: #2b2b2b;
  max-width: 62ch;
}
.case-section ul {
  margin: 12px 0 0 1.25rem;
}
.case-section li { margin-bottom: 8px; }

.case-highlight {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 24px 28px;
  margin-top: 20px;
}
.case-highlight p { max-width: none; color: var(--ink); }

.case-visual {
  margin-top: 20px;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: linear-gradient(145deg, #1a1a1a 0%, #2d2d2d 100%);
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.45);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.case-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
  margin-top: 20px;
}
.case-metric {
  background: var(--ink);
  color: var(--cream);
  border-radius: 14px;
  padding: 20px;
}
.case-metric .val {
  font-family: 'Unbounded', sans-serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--accent);
  line-height: 1.1;
}
.case-metric .lbl {
  font-size: 12px;
  opacity: 0.75;
  margin-top: 8px;
}

.case-cta {
  margin-top: 48px;
  padding: 32px;
  border-radius: var(--r-lg);
  background: var(--ink);
  color: var(--cream);
  text-align: center;
}
.case-cta h2 {
  font-family: 'Unbounded', sans-serif;
  font-size: 1.35rem;
  margin-bottom: 12px;
  border: none;
  padding: 0;
}
.case-cta p {
  color: rgba(255,255,255,0.65);
  max-width: 44ch;
  margin: 0 auto 20px;
  font-size: 15px;
}
.case-cta a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  transition: transform 0.35s var(--ease);
}
.case-cta a:hover { transform: translateY(-2px); }

.case-footer-mini {
  text-align: center;
  padding: 24px var(--gutter);
  font-size: 12px;
  color: var(--muted);
  border-top: 1px solid var(--border);
}
.case-footer-mini a { text-decoration: underline; }

@media (max-width: 600px) {
  .case-nav-links { font-size: 13px; gap: 6px 12px; }
  .case-nav-cta { padding: 8px 14px; }
}

@media (max-width: 760px) {
  .case-nav {
    flex-wrap: wrap;
    gap: 10px;
  }

  .case-nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .case-nav-links {
    display: none;
    width: 100%;
    order: 3;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    margin-top: 2px;
    padding-top: 8px;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
  }

  .case-nav.is-open .case-nav-links {
    display: flex;
  }

  .case-nav-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.82);
    padding: 8px 12px;
  }
}