/**
 * Z-TECH — лучшие приёмы Neura / ITECH / Aeroidea
 */

/* ── Hero editorial (Neura) ── */
.hero-editorial {
  max-width: 42rem;
}

.hero-editorial__kicker {
  display: block;
  font-family: var(--linear-mono, monospace);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #52525b;
  margin-bottom: 1.25rem;
}

.hero-rotator-line {
  display: block;
  font-size: clamp(2.25rem, 6vw, 4.25rem);
  font-weight: 600;
  letter-spacing: -0.05em;
  line-height: 1.05;
  color: var(--linear-text, #ededed);
}

.hero-rotator-wrap {
  display: inline-flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.12em;
  min-height: 1.15em;
}

.hero-rotator {
  display: inline-block;
  background: linear-gradient(180deg, #fff 0%, #a1a1aa 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  transition: opacity 0.35s ease, transform 0.45s var(--linear-ease, cubic-bezier(0.16, 1, 0.3, 1));
}

.hero-rotator.is-out {
  opacity: 0;
  transform: translateY(12px);
}

.hero-rotator-cursor {
  display: inline-block;
  width: 3px;
  height: 0.9em;
  margin-left: 2px;
  background: var(--linear-accent, #f43f5e);
  animation: ref-cursor-blink 1s step-end infinite;
  vertical-align: baseline;
}

@keyframes ref-cursor-blink {
  50% { opacity: 0; }
}

.hero-editorial__sub {
  display: block;
  margin-top: 1.25rem;
  max-width: 28rem;
  font-size: 1.125rem;
  line-height: 1.55;
  color: var(--linear-muted, #8b8b93);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--linear-mono, monospace);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  color: #3f3f46;
  animation: ref-scroll-hint 2.5s ease-in-out infinite;
}

@keyframes ref-scroll-hint {
  0%, 100% { opacity: 0.35; transform: translateX(-50%) translateY(0); }
  50% { opacity: 0.85; transform: translateX(-50%) translateY(6px); }
}

body.ref-studio.linear-tier .hero-title-line,
body.ref-studio.linear-tier .hero-title-wrap,
body.ref-studio.linear-tier .hero-shimmer-line {
  display: none !important;
}

body.ref-studio .hero-desc {
  border: none;
  padding: 0;
  max-width: 32rem;
}

/* ── Section index (Neura 01 / 02) ── */
.sec-head {
  display: grid;
  gap: 0.75rem 1.5rem;
  max-width: 40rem;
}

@media (min-width: 768px) {
  .sec-head {
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto auto;
    column-gap: 1.5rem;
  }

  .sec-head__index {
    grid-row: 1 / span 3;
  }
}

.sec-head__index {
  font-family: var(--linear-mono, monospace);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--linear-accent, #f43f5e);
}

.sec-head__tag {
  font-family: var(--linear-mono, monospace);
  font-size: 0.625rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #52525b;
}

.sec-head__title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.1;
  color: var(--linear-text, #ededed);
}

.sec-head__title em {
  font-style: normal;
  color: #71717a;
}

.sec-head__lead {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--linear-muted, #8b8b93);
  max-width: 36rem;
}

@media (min-width: 768px) {
  .sec-head__lead {
    grid-column: 2;
  }
}

/* ── Ref metrics band (ITECH) ── */
.ref-metrics {
  border-y: 1px solid var(--linear-border, rgba(255, 255, 255, 0.09));
  background: rgba(255, 255, 255, 0.02);
}

.ref-metrics__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--linear-border);
}

@media (min-width: 1024px) {
  .ref-metrics__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.ref-metrics__cell {
  background: var(--linear-bg, #09090b);
  padding: 1.75rem 1.25rem;
  text-align: center;
}

.ref-metrics__val {
  display: block;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  color: var(--linear-text, #ededed);
}

.ref-metrics__key {
  display: block;
  margin-top: 0.35rem;
  font-family: var(--linear-mono, monospace);
  font-size: 0.625rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #52525b;
}

/* ── Case tags (Neura slash tags) ── */
.ref-case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.5rem;
  margin-top: 1rem;
  font-family: var(--linear-mono, monospace);
  font-size: 0.6875rem;
  color: #71717a;
}

.ref-case-tags span:not(:last-child)::after {
  content: "/";
  margin-left: 0.5rem;
  color: #3f3f46;
}

.ref-case-editorial {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--linear-border);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--linear-muted);
}

/* ── Workflow 3 steps (Neura) ── */
.ref-workflow {
  display: grid;
  gap: 1px;
  background: var(--linear-border);
  border: 1px solid var(--linear-border);
  border-radius: 12px;
  overflow: hidden;
}

@media (min-width: 768px) {
  .ref-workflow {
    grid-template-columns: repeat(3, 1fr);
  }
}

.ref-workflow__step {
  background: rgba(255, 255, 255, 0.02);
  padding: 2rem 1.75rem;
  transition: background 0.25s ease;
}

.ref-workflow__step:hover {
  background: rgba(255, 255, 255, 0.045);
}

.ref-workflow__num {
  font-family: var(--linear-mono, monospace);
  font-size: 0.6875rem;
  color: var(--linear-accent);
}

.ref-workflow__title {
  display: block;
  margin-top: 1rem;
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--linear-text);
}

.ref-workflow__text {
  margin-top: 0.65rem;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--linear-muted);
}

/* ── Timeline process (Neura week style) ── */
.ref-timeline {
  display: grid;
  gap: 0;
  border: 1px solid var(--linear-border);
  border-radius: 12px;
  overflow: hidden;
}

@media (min-width: 1024px) {
  .ref-timeline {
    grid-template-columns: repeat(4, 1fr);
  }
}

.ref-timeline__item {
  position: relative;
  padding: 1.75rem 1.5rem;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--linear-border);
}

@media (min-width: 1024px) {
  .ref-timeline__item {
    border-bottom: none;
    border-right: 1px solid var(--linear-border);
  }

  .ref-timeline__item:last-child {
    border-right: none;
  }
}

.ref-timeline__day {
  font-family: var(--linear-mono, monospace);
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #52525b;
}

.ref-timeline__title {
  display: block;
  margin-top: 0.75rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--linear-text);
}

.ref-timeline__text {
  margin-top: 0.5rem;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--linear-muted);
}

/* ── Stack grid ITECH ── */
.ref-stack {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 1024px) {
  .ref-stack {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }
}

.ref-stack__group {
  border: 1px solid var(--linear-border);
  border-radius: 12px;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.02);
}

.ref-stack__label {
  font-family: var(--linear-mono, monospace);
  font-size: 0.625rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #52525b;
  margin-bottom: 1rem;
}

.ref-stack__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.ref-stack__chip {
  padding: 0.35rem 0.65rem;
  border-radius: 6px;
  border: 1px solid var(--linear-border);
  background: rgba(0, 0, 0, 0.25);
  font-family: var(--linear-mono, monospace);
  font-size: 0.6875rem;
  color: #a1a1aa;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.ref-stack__chip:hover {
  border-color: var(--linear-border-hover);
  color: var(--linear-text);
}

/* ── Pricing note (Neura clarity) ── */
.ref-pricing-note {
  margin-top: 2rem;
  font-family: var(--linear-mono, monospace);
  font-size: 0.75rem;
  color: #52525b;
  max-width: 36rem;
}

/* Hide duplicate legacy when ref-studio on */
body.ref-studio .fx-process.fx-stagger.grid {
  display: none;
}

body.ref-studio #stack .fx-stagger.grid {
  display: none;
}

body.ref-studio .marquee-section {
  display: none;
}