/* =====================================================
   public.css — стили public-режима сайта
   Вектор Сборки / site-builder v1
   Mobile-first: base → @media (min-width: 768px) → @media (min-width: 1024px)
   ===================================================== */

/* --------------------------------------------------
   Site Header (public)
   -------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-bg);
  border-bottom: var(--border);
  transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.site-header.scrolled {
  background-color: rgba(240, 237, 230, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: var(--space-sm);
}

.header-logo {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: var(--ls-h3);
  white-space: nowrap;
  text-decoration: none;
}

.header-logo:hover {
  color: var(--color-accent);
}

.header-nav {
  display: none;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.btn-inside {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: transparent;
  color: var(--color-text-dim);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  border: var(--border);
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  text-decoration: none;
}

.btn-inside:hover {
  color: var(--color-accent-2);
  border-color: var(--color-accent-2);
}

.btn-inside-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent);
  display: inline-block;
}

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  padding: 4px;
  cursor: pointer;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 1.5px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.hamburger.is-active span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.hamburger.is-active span:nth-child(2) {
  opacity: 0;
}

.hamburger.is-active span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile nav overlay */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 99;
  background-color: var(--color-bg);
  padding: 80px var(--space-md) var(--space-lg);
  flex-direction: column;
  gap: var(--space-sm);
}

.mobile-nav.is-open {
  display: flex;
}

.mobile-nav a {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 400;
  color: var(--color-text);
  text-decoration: none;
  padding-block: var(--space-xs);
  letter-spacing: var(--ls-h3);
  transition: color var(--transition-fast);
}

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

.mobile-nav .mobile-nav-divider {
  border: none;
  border-top: var(--border-dim);
  margin-block: var(--space-xs);
}

.mobile-nav .mobile-nav-inside {
  color: var(--color-text-dim);
  font-size: 18px;
}

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

#hero {
  background-color: var(--color-deep);
  padding-block: var(--space-2xl);
  position: relative;
  overflow: hidden;
}

/* Photo background layer (parallax target) */
#hero-bg-photo {
  position: absolute;
  inset: -15% 0;           /* oversized so parallax never shows edge */
  background-image: url('../images/hero-notebook.jpg');
  background-size: cover;
  background-position: center 30%;
  will-change: transform;
  pointer-events: none;
}

/* Dark overlay on top of photo */
#hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(22, 19, 15, 0.82) 0%,
    rgba(22, 19, 15, 0.70) 60%,
    rgba(22, 19, 15, 0.78) 100%
  );
  pointer-events: none;
  z-index: 0;
}

/* Subtle topographic texture overlay */
#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 39px,
      rgba(250, 248, 244, 0.03) 39px,
      rgba(250, 248, 244, 0.03) 40px
    );
  pointer-events: none;
  z-index: 1;
}

/* --------------------------------------------------
   Reveal animation (driven by IntersectionObserver in site.js)
   -------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Stagger delays for .stagger-group children */
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }
.reveal[data-delay="5"] { transition-delay: 0.40s; }
.reveal[data-delay="6"] { transition-delay: 0.48s; }

/* Prefers-reduced-motion: disable all animation */
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  #hero-bg-photo { will-change: auto; }
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 820px;
}

.hero-label {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--ls-label);
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 600;
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-hero);
  color: var(--color-text-inv);
  margin-bottom: var(--space-md);
}

.hero-subtitle {
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.65;
  color: rgba(250, 248, 244, 0.75);
  margin-bottom: var(--space-sm);
  max-width: 640px;
}

.hero-meta {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: rgba(250, 248, 244, 0.45);
  margin-bottom: var(--space-lg);
  letter-spacing: 0.01em;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-items: center;
}

/* --------------------------------------------------
   Section: For Whom
   -------------------------------------------------- */

#for-whom {
  background-color: var(--color-bg);
}

.for-whom-intro {
  max-width: 720px;
  margin-bottom: var(--space-lg);
}

.for-whom-intro p {
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-text-dim);
}

.for-whom-scenarios {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.scenario-item {
  padding: var(--space-md);
  background-color: var(--color-surface);
  border: var(--border);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-border);
  transition: border-left-color var(--transition-base), box-shadow var(--transition-base);
}

.scenario-item:hover {
  border-left-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.scenario-item p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
}

.scenario-item p::before {
  content: '—';
  color: var(--color-accent);
  margin-right: 8px;
  font-weight: 500;
}

.for-whom-conclusion {
  margin-top: var(--space-lg);
  padding: var(--space-md);
  border-left: 2px solid var(--color-accent);
  background-color: var(--color-surface);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.for-whom-conclusion p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text-dim);
  font-style: italic;
  font-family: var(--font-accent);
  font-size: 20px;
}

/* --------------------------------------------------
   Section: How It Works (Methodology)
   -------------------------------------------------- */

#how-it-works {
  background-color: var(--color-surface);
}

.section-eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--ls-label);
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-size: var(--text-h2);
  font-weight: 600;
  margin-bottom: var(--space-md);
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-h2);
}

.section-lead {
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-text-dim);
  max-width: 640px;
  margin-bottom: var(--space-lg);
}

.layers-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.layer-card {
  background-color: var(--color-bg);
  border: var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  position: relative;
  overflow: hidden;
}

.layer-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background-color: var(--color-accent);
  opacity: 0.4;
}

.layer-number {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.layer-name {
  font-size: var(--text-h3);
  font-weight: 600;
  margin-bottom: 4px;
  letter-spacing: var(--ls-h3);
}

.layer-role {
  font-size: var(--text-sm);
  color: var(--color-text-dim);
  margin-bottom: var(--space-sm);
  letter-spacing: var(--ls-caption);
}

.layer-description {
  font-size: var(--text-base);
  line-height: var(--lh-body);
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.layer-output {
  font-size: var(--text-sm);
  color: var(--color-text-dim);
  line-height: 1.55;
  padding-top: var(--space-sm);
  border-top: var(--border-dim);
}

.layer-output strong {
  color: var(--color-text);
  font-weight: 500;
}

.methodology-note {
  padding: var(--space-md);
  background-color: var(--color-bg);
  border: var(--border);
  border-radius: var(--radius-md);
}

.methodology-note h3 {
  font-size: var(--text-h4);
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.methodology-note p {
  font-size: var(--text-base);
  color: var(--color-text-dim);
  line-height: var(--lh-body);
}

/* --------------------------------------------------
   Section: Deliverables
   -------------------------------------------------- */

#deliverables {
  background-color: var(--color-bg);
}

.deliverables-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.deliverable-item {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-surface);
  border: var(--border);
  border-radius: var(--radius-md);
  align-items: flex-start;
}

.deliverable-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(168, 92, 66, 0.08);
  border-radius: var(--radius-sm);
  margin-top: 2px;
}

.deliverable-icon svg {
  width: 18px;
  height: 18px;
  stroke: var(--color-accent);
  fill: none;
}

.deliverable-content {
  flex: 1;
}

.deliverable-title {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 4px;
}

.deliverable-desc {
  font-size: var(--text-sm);
  color: var(--color-text-dim);
  line-height: 1.55;
}

.deliverables-pullquote {
  border-left: 2px solid var(--color-accent);
  padding-left: var(--space-md);
  font-family: var(--font-accent);
  font-style: italic;
  font-size: 22px;
  line-height: 1.45;
  color: var(--color-text);
  max-width: 640px;
}

/* --------------------------------------------------
   Section: Team
   -------------------------------------------------- */

#team {
  background-color: var(--color-surface);
}

.team-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.team-card {
  background-color: var(--color-bg);
  border: var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.team-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.team-card-name {
  font-size: var(--text-h3);
  font-weight: 600;
  margin-bottom: 4px;
  letter-spacing: var(--ls-h3);
}

.team-card-meta {
  font-size: var(--text-sm);
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
  font-weight: 500;
  letter-spacing: var(--ls-caption);
}

.team-card-section {
  margin-bottom: var(--space-sm);
}

.team-card-section:last-child {
  margin-bottom: 0;
}

.team-card-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--ls-label);
  color: var(--color-text-dim);
  margin-bottom: 6px;
  display: block;
}

.team-card-text {
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-text);
}

/* --------------------------------------------------
   Section: Pricing
   -------------------------------------------------- */

#pricing {
  background-color: var(--color-bg);
}

.pricing-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.pricing-card {
  background-color: var(--color-surface);
  border: var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  position: relative;
}

.pricing-card--active {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.pricing-badge {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--ls-label);
  background-color: var(--color-accent);
  color: var(--color-text-inv);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-sm);
}

.pricing-type {
  font-size: var(--text-h3);
  font-weight: 600;
  margin-bottom: var(--space-xs);
  letter-spacing: var(--ls-h3);
}

.pricing-amount {
  font-family: var(--font-display);
  font-size: 38px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.1;
  margin-bottom: var(--space-xs);
  letter-spacing: var(--ls-h1);
}

.pricing-note {
  font-size: var(--text-sm);
  color: var(--color-text-dim);
  line-height: 1.55;
  margin-bottom: var(--space-md);
}

.pricing-cta {
  margin-top: var(--space-sm);
}

.pricing-structure {
  padding: var(--space-md);
  background-color: var(--color-surface);
  border: var(--border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
}

.pricing-structure h3 {
  font-size: var(--text-h4);
  margin-bottom: var(--space-sm);
}

.pricing-structure p {
  font-size: var(--text-base);
  color: var(--color-text-dim);
  margin-bottom: var(--space-sm);
  line-height: var(--lh-body);
}

.pricing-structure p:last-child {
  margin-bottom: 0;
}

.pricing-first-step {
  padding: var(--space-md);
  background-color: rgba(168, 92, 66, 0.06);
  border: 1px solid rgba(168, 92, 66, 0.2);
  border-radius: var(--radius-md);
}

.pricing-first-step h3 {
  font-size: var(--text-h4);
  margin-bottom: var(--space-xs);
  color: var(--color-accent);
}

.pricing-first-step p {
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: 1.6;
}

/* --------------------------------------------------
   Section: FAQ
   -------------------------------------------------- */

#faq {
  background-color: var(--color-surface);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: var(--border);
}

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

.faq-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-sm) 0;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  gap: var(--space-sm);
  transition: color var(--transition-fast);
}

.faq-trigger:hover .faq-question {
  color: var(--color-accent);
}

.faq-question {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.45;
  transition: color var(--transition-fast);
}

.faq-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-dim);
  transition: transform var(--transition-base), color var(--transition-fast);
}

.faq-item[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
  color: var(--color-accent);
}

.faq-item[aria-expanded="true"] .faq-question {
  color: var(--color-accent);
}

.faq-body {
  overflow: hidden;
  height: 0;
  transition: height var(--transition-slow);
}

.faq-answer {
  padding-bottom: var(--space-sm);
  font-size: var(--text-base);
  color: var(--color-text-dim);
  line-height: var(--lh-body);
}

.faq-answer p + p {
  margin-top: var(--space-sm);
}

/* --------------------------------------------------
   Section: Application / CTA
   -------------------------------------------------- */

#application {
  background-color: var(--color-deep);
  padding-block: var(--space-xl);
}

.application-inner {
  max-width: 680px;
}

.application-title {
  font-size: var(--text-h2);
  font-weight: 600;
  color: var(--color-text-inv);
  margin-bottom: var(--space-sm);
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-h2);
}

.application-lead {
  font-size: 17px;
  line-height: 1.7;
  color: rgba(250, 248, 244, 0.7);
  margin-bottom: var(--space-lg);
}

.application-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-items: center;
  margin-bottom: var(--space-md);
}

.application-divider {
  font-size: var(--text-sm);
  color: rgba(250, 248, 244, 0.4);
}

.application-direct {
  font-size: var(--text-sm);
  color: rgba(250, 248, 244, 0.5);
}

.application-direct a {
  color: var(--color-accent);
  font-weight: 500;
}

.application-direct a:hover {
  color: rgba(168, 92, 66, 0.8);
}

.application-footnote {
  margin-top: var(--space-md);
  font-size: var(--text-sm);
  color: rgba(250, 248, 244, 0.35);
  font-style: italic;
  line-height: 1.55;
}

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

.site-footer {
  background-color: var(--color-deep);
  border-top: 1px solid rgba(250, 248, 244, 0.08);
  padding-block: var(--space-lg);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-inv);
  letter-spacing: var(--ls-h3);
}

.footer-meta {
  font-size: var(--text-sm);
  color: var(--color-text-dim);
  line-height: 1.5;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-items: center;
}

.footer-links a {
  font-size: var(--text-sm);
  color: var(--color-accent-2);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-text-inv);
}

.footer-inside-link {
  font-size: var(--text-sm);
  color: var(--color-accent-2);
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
  transition: color var(--transition-fast);
  padding: 0;
}

.footer-inside-link:hover {
  color: var(--color-text-inv);
}

/* --------------------------------------------------
   Tablet and up (768px+)
   -------------------------------------------------- */

@media (min-width: 768px) {
  .header-nav {
    display: flex;
    align-items: center;
    gap: var(--space-md);
  }

  .header-nav a {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition-fast);
    letter-spacing: 0.01em;
  }

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

  .hamburger {
    display: none;
  }

  .layers-grid {
    gap: var(--space-md);
  }

  .footer-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
  }
}

/* --------------------------------------------------
   Desktop (1024px+)
   -------------------------------------------------- */

@media (min-width: 1024px) {
  .layers-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
  }

  .team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
  }

  .pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }

  .deliverables-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
  }

  /* Layer card equal height */
  .layer-card {
    display: flex;
    flex-direction: column;
  }

  .layer-description {
    flex: 1;
  }
}

/* --------------------------------------------------
   Mode toggle (Public | Inside pill)
   -------------------------------------------------- */

.mode-toggle {
  display: flex;
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 3px;
  gap: 2px;
}

.mode-toggle-pill {
  padding: 5px 14px;
  border-radius: 16px;
  font-size: 13px;
  font-family: var(--font-body);
  font-weight: 500;
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--color-text-dim);
  transition: all 0.2s;
  white-space: nowrap;
}

.mode-toggle-pill.active {
  background: var(--color-text);
  color: var(--color-bg);
  cursor: default;
}

.mode-toggle-inside:hover { color: var(--color-text); }

/* --------------------------------------------------
   Team tags
   -------------------------------------------------- */

.team-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.team-tag {
  font-size: 11px;
  padding: 3px 10px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  color: var(--color-text-dim);
}