/* ============================================================
   НЕЙРОМИКА v3 — NEO-MINIMALISM / APPLE & STRIPE
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ── CSS Variables ── */
:root {
  --white: #FFFFFF;
  --silver: #F5F5F7;
  --titanium: #8E8E93;
  --graphite: #1C1C1E;
  --accent: rgba(142, 142, 147, 0.15);
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.4);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--graphite);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ── Typography ── */
h1, h2, h3, h4, h5 {
  letter-spacing: -0.5px;
  line-height: 1.15;
  font-weight: 600;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.5rem); }

.overline {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--titanium);
  margin-bottom: 12px;
}

/* ── Container ── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  z-index: 1000;
  display: flex;
  align-items: center;
  background: transparent;
  transition: var(--transition);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-text {
  font-weight: 600;
  font-size: 18px;
  letter-spacing: 3px;
  color: var(--graphite);
  text-transform: uppercase;
}

.logo-svg {
  width: 40px;
  height: 40px;
  transition: var(--transition);
}

/* Nav */
.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--graphite);
  padding: 8px 14px;
  border-radius: 8px;
  transition: var(--transition);
  position: relative;
}

.site-nav a:hover {
  background: var(--accent);
}

.site-nav a.active {
  color: var(--graphite);
  background: var(--accent);
}

/* CTA Button */
.btn-audit {
  background: var(--graphite);
  color: var(--white) !important;
  border-radius: 980px;
  padding: 10px 22px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
  white-space: nowrap;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
}

.btn-audit:hover {
  transform: scale(1.02);
  box-shadow: 0 4px 20px rgba(28, 28, 30, 0.25);
  background: var(--graphite) !important;
}

/* Burger */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border: none;
  background: none;
  z-index: 1100;
}

.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--graphite);
  border-radius: 2px;
  transition: var(--transition);
}

.burger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.burger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu Overlay */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 1050;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}

.mobile-menu a {
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.5px;
  color: var(--graphite);
  transition: var(--transition);
}

.mobile-menu a:hover { color: var(--titanium); }

.mobile-menu .btn-audit {
  font-size: 1rem;
  padding: 14px 32px;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: 100px 24px 80px;
}

/* Grid Background */
.hero-grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 860px;
  width: 100%;
}

.hero-logo-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 40px;
}

.hero-logo-svg {
  width: 80px;
  height: 80px;
  transition: transform 0.1s ease;
}

.hero-logo-name {
  font-weight: 600;
  font-size: 20px;
  letter-spacing: 4px;
  color: var(--graphite);
  text-transform: uppercase;
}

.hero h1 {
  margin-bottom: 24px;
  color: var(--graphite);
  max-width: 800px;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--titanium);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--titanium);
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  animation: scrollBounce 2s ease-in-out infinite;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--titanium);
  border-bottom: 2px solid var(--titanium);
  transform: rotate(45deg);
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* Inner page hero */
.hero-inner {
  padding: 140px 24px 80px;
  background: var(--silver);
  text-align: center;
}

.hero-inner h1 {
  margin-bottom: 16px;
}

.hero-inner .hero-subtitle {
  margin: 0 auto;
}

/* ============================================================
   SECTIONS
   ============================================================ */
section { padding: 100px 0; }

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header h2 { margin-bottom: 16px; }
.section-header p {
  font-size: 1.1rem;
  color: var(--titanium);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================================
   GLASSMORPHISM CARDS
   ============================================================ */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: 20px;
  padding: 32px;
  transition: var(--transition);
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

/* ============================================================
   FLIP CARDS (MANIFEST BLOCK)
   ============================================================ */
.manifest-section { background: var(--white); }

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

.flip-card {
  perspective: 1000px;
  height: 280px;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner {
  transform: rotateY(180deg);
}

.flip-front, .flip-back {
  position: absolute;
  inset: 0;
  border-radius: 20px;
  padding: 32px;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.flip-front {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

.flip-back {
  background: var(--graphite);
  color: var(--white);
  transform: rotateY(180deg);
}

.flip-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.flip-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--graphite);
}

.flip-pain {
  font-size: 0.875rem;
  color: var(--titanium);
  line-height: 1.6;
}

.flip-back-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 12px;
}

.flip-solution {
  font-size: 0.95rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.9);
}

/* ============================================================
   NEUROVORONKA BLOCK
   ============================================================ */
.neurovoronka-section {
  background: var(--silver);
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.neurovoronka-text p {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #3a3a3c;
}

.metrics-col {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.metric-item {
  border-left: 3px solid var(--graphite);
  padding-left: 24px;
}

.metric-value {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -2px;
  color: var(--graphite);
  line-height: 1;
}

.metric-label {
  font-size: 0.9rem;
  color: var(--titanium);
  margin-top: 6px;
}

/* ============================================================
   ROI CALCULATOR
   ============================================================ */
.roi-section { background: var(--white); }

.roi-inner {
  max-width: 800px;
  margin: 0 auto;
}

.slider-group {
  margin-bottom: 40px;
}

.slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.slider-label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--graphite);
}

.slider-value {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--graphite);
  background: var(--silver);
  padding: 4px 12px;
  border-radius: 20px;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 4px;
  background: var(--silver);
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--graphite);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  transition: var(--transition);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--graphite);
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.roi-results {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
  padding: 48px;
  background: var(--silver);
  border-radius: 24px;
}

.roi-result-item {
  text-align: center;
}

.roi-result-number {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -1px;
  color: var(--graphite);
  line-height: 1.2;
}

.roi-result-label {
  font-size: 0.8rem;
  color: var(--titanium);
  margin-top: 6px;
  line-height: 1.4;
}

.roi-cta {
  text-align: center;
  margin-top: 40px;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  background: var(--graphite);
  color: var(--white);
  border-radius: 980px;
  padding: 14px 32px;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  text-decoration: none;
}

.btn-primary:hover {
  transform: scale(1.02);
  box-shadow: 0 8px 30px rgba(28, 28, 30, 0.3);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  background: transparent;
  color: var(--graphite);
  border-radius: 980px;
  padding: 14px 32px;
  font-size: 0.95rem;
  font-weight: 500;
  border: 1.5px solid var(--graphite);
  transition: var(--transition);
  cursor: pointer;
  text-decoration: none;
}

.btn-outline:hover {
  background: var(--graphite);
  color: var(--white);
  transform: scale(1.02);
}

.btn-white {
  display: inline-flex;
  align-items: center;
  background: var(--white);
  color: var(--graphite);
  border-radius: 980px;
  padding: 14px 32px;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  text-decoration: none;
}

.btn-white:hover {
  transform: scale(1.02);
  box-shadow: 0 8px 30px rgba(255, 255, 255, 0.3);
}

/* ============================================================
   SERVICES PAGE
   ============================================================ */

/* Chain diagram */
.chain-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  margin-top: 40px;
}

.chain-item {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: 16px;
  padding: 20px 28px;
  text-align: center;
  min-width: 180px;
}

.chain-item-title {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--titanium);
  margin-bottom: 4px;
}

.chain-item-desc {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--graphite);
}

.chain-arrow {
  font-size: 1.5rem;
  color: var(--titanium);
  padding: 0 8px;
}

/* Featured card */
.featured-card {
  background: var(--graphite);
  color: var(--white);
  border-radius: 28px;
  padding: 56px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 80px;
  position: relative;
  overflow: hidden;
}

.featured-card::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(142, 142, 147, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  border-radius: 980px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  width: fit-content;
}

.badge-white {
  border: 1.5px solid rgba(255, 255, 255, 0.6);
  color: rgba(255, 255, 255, 0.8);
}

.featured-card h2 {
  color: var(--white);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.featured-details {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 1px;
}

.featured-price {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -2px;
  color: var(--white);
}

.featured-text {
  font-size: 1rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.75);
  max-width: 600px;
}

/* Service category */
.service-category { margin-bottom: 72px; }

.service-category .overline {
  font-size: 0.7rem;
  letter-spacing: 3px;
  border-left: 3px solid var(--graphite);
  padding-left: 12px;
  margin-bottom: 32px;
}

.services-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.services-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.services-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
  border-radius: 20px;
  padding: 32px;
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.1);
}

.service-card h3 {
  margin-bottom: 12px;
  font-size: 1rem;
  font-weight: 600;
}

.service-card p {
  font-size: 0.875rem;
  color: var(--titanium);
  line-height: 1.6;
}

/* ============================================================
   PHILOSOPHY PAGE
   ============================================================ */

.manifesto-section {
  background: var(--white);
  text-align: center;
}

.manifesto-quote {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: -0.5px;
  color: var(--graphite);
  max-width: 700px;
  margin: 0 auto 32px;
  font-style: italic;
}

.manifesto-sub {
  font-size: 1rem;
  color: var(--titanium);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

.timeline-section { background: var(--silver); }

.timeline {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--graphite), var(--titanium));
}

.timeline-item {
  padding: 0 0 48px 40px;
  position: relative;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -5px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--graphite);
}

.timeline-year {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--titanium);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.timeline-text {
  font-size: 1.05rem;
  color: var(--graphite);
  line-height: 1.7;
}

/* Thesis section */
.thesis-section { background: var(--white); }

.thesis-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}

.thesis-item {}

.thesis-number {
  font-size: 5rem;
  font-weight: 700;
  letter-spacing: -4px;
  color: rgba(28, 28, 30, 0.06);
  line-height: 1;
  margin-bottom: 16px;
}

.thesis-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 14px;
}

.thesis-text {
  font-size: 0.9rem;
  color: var(--titanium);
  line-height: 1.8;
}

/* ============================================================
   CONTACTS PAGE
   ============================================================ */

.ecosystem-section { background: var(--silver); }

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

.ecosystem-card {
  border: 1.5px solid rgba(28, 28, 30, 0.12);
  border-radius: 20px;
  padding: 40px;
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
  background: var(--white);
}

.ecosystem-card:hover {
  background: var(--graphite);
  color: var(--white);
  border-color: var(--graphite);
  transform: translateY(-4px);
}

.ecosystem-card:hover .ecosystem-icon,
.ecosystem-card:hover .ecosystem-title,
.ecosystem-card:hover .ecosystem-desc {
  color: var(--white);
}

.ecosystem-card:hover .eco-btn {
  background: rgba(255, 255, 255, 0.15);
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.3);
}

.ecosystem-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
  color: var(--graphite);
  transition: var(--transition);
}

.ecosystem-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--graphite);
  transition: var(--transition);
}

.ecosystem-desc {
  font-size: 0.875rem;
  color: var(--titanium);
  margin-bottom: 24px;
  line-height: 1.6;
  transition: var(--transition);
}

.eco-btn {
  display: inline-flex;
  align-items: center;
  padding: 10px 20px;
  border-radius: 980px;
  font-size: 0.8rem;
  font-weight: 500;
  border: 1.5px solid rgba(28, 28, 30, 0.2);
  color: var(--graphite);
  transition: var(--transition);
}

/* Contact form */
.contact-section { background: var(--white); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--graphite);
  letter-spacing: 0.5px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  border: 1.5px solid rgba(28, 28, 30, 0.12);
  border-radius: 12px;
  font-family: var(--font);
  font-size: 0.95rem;
  color: var(--graphite);
  background: var(--white);
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--graphite);
  box-shadow: 0 0 0 3px rgba(28, 28, 30, 0.06);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-info {
  padding-top: 8px;
}

.contact-info-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 32px;
}

.contact-info-items {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.contact-info-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-info-text {
  font-size: 0.95rem;
  color: var(--graphite);
  line-height: 1.6;
}

.contact-info-text span {
  display: block;
  font-size: 0.75rem;
  color: var(--titanium);
  margin-top: 2px;
}

.response-time {
  margin-top: 32px;
  padding: 16px 20px;
  background: var(--silver);
  border-radius: 12px;
  font-size: 0.875rem;
  color: var(--titanium);
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--graphite);
  color: var(--silver);
  padding: 80px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 48px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-col-title {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 20px;
}

.footer-logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-logo-text {
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--white);
}

.footer-slogan {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.6;
  margin-bottom: 12px;
}

.footer-copy {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.3);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}

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

.footer-contacts {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-contact-item {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
}

.footer-legal-items {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-legal-item {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
  line-height: 1.5;
}

.footer-legal-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
}

.footer-legal-links a {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.35);
  transition: var(--transition);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.footer-legal-links a:hover { color: rgba(255, 255, 255, 0.7); }

.footer-bottom {
  padding-top: 32px;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.2);
}

/* ============================================================
   AI ASSISTANT WIDGET
   ============================================================ */
.ai-widget {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
}

.ai-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--graphite);
  color: var(--white);
  border: none;
  cursor: pointer;
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 24px rgba(28, 28, 30, 0.35);
  transition: var(--transition);
}

.ai-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 8px 32px rgba(28, 28, 30, 0.4);
}

.ai-bubble {
  position: absolute;
  bottom: 68px;
  right: 0;
  width: 320px;
  height: 420px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
  border-radius: 24px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  opacity: 0;
  transform: translateY(16px) scale(0.96);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.ai-bubble.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: all;
}

.ai-bubble-header {
  background: var(--graphite);
  color: var(--white);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.ai-bubble-header-icon {
  font-size: 1.2rem;
}

.ai-bubble-header-title {
  font-size: 0.875rem;
  font-weight: 600;
}

.ai-bubble-header-sub {
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.5);
  margin-left: auto;
}

.ai-bubble-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.ai-message {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--graphite);
  background: var(--silver);
  padding: 12px 16px;
  border-radius: 16px 16px 16px 4px;
  max-width: 90%;
}

.ai-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.ai-option-btn {
  padding: 8px 14px;
  border-radius: 20px;
  border: 1.5px solid rgba(28, 28, 30, 0.15);
  background: var(--white);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  color: var(--graphite);
  font-family: var(--font);
}

.ai-option-btn:hover {
  background: var(--graphite);
  color: var(--white);
  border-color: var(--graphite);
}

.ai-option-btn.selected {
  background: var(--graphite);
  color: var(--white);
  border-color: var(--graphite);
}

.ai-email-form {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ai-email-input {
  padding: 10px 14px;
  border: 1.5px solid rgba(28, 28, 30, 0.15);
  border-radius: 10px;
  font-family: var(--font);
  font-size: 0.85rem;
  outline: none;
  transition: var(--transition);
  background: var(--white);
}

.ai-email-input:focus {
  border-color: var(--graphite);
}

.ai-submit-btn {
  padding: 10px 16px;
  background: var(--graphite);
  color: var(--white);
  border: none;
  border-radius: 10px;
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.ai-submit-btn:hover {
  transform: scale(1.02);
}

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }

  .thesis-grid {
    grid-template-columns: 1fr;
    gap: 48px;
    max-width: 600px;
    margin: 0 auto;
  }

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

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

@media (max-width: 768px) {
  .site-nav,
  .btn-audit {
    display: none;
  }

  .burger {
    display: flex;
  }

  .cards-grid {
    grid-template-columns: 1fr;
  }

  .flip-card { height: 240px; }

  .two-col {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .roi-results {
    grid-template-columns: 1fr;
    padding: 32px 24px;
    gap: 32px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .ecosystem-cards {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .chain-diagram {
    flex-direction: column;
  }

  .chain-arrow {
    transform: rotate(90deg);
  }

  .featured-card {
    padding: 32px 24px;
  }

  .services-grid-2,
  .services-grid-4,
  .services-grid-3 {
    grid-template-columns: 1fr;
  }

  .hero-logo-name {
    display: none;
  }

  .section-header h2 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
  section { padding: 72px 0; }
  .container { padding: 0 16px; }
  .hero { padding: 80px 16px 60px; }
  .ai-bubble { width: 290px; }
}

/* ===== FLAGSHIP CARDS (services.html) ===== */
.flagship-card {
  border-radius: 28px;
  padding: 56px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 40px;
  position: relative;
  overflow: hidden;
}

.flagship-dark {
  background: #1C1C1E;
  color: #fff;
}

.flagship-light {
  background: #F5F5F7;
  color: #1C1C1E;
}

.flagship-dark h2 {
  color: #fff;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
}

.flagship-light h2 {
  color: #1C1C1E;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
}

.flagship-sub {
  font-size: 1.05rem;
  opacity: 0.8;
  line-height: 1.6;
  max-width: 640px;
}

.flagship-benefits {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  margin: 4px 0;
}

.flagship-benefit-item {
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  opacity: 0.9;
}

/* Pill badges */
.badge-pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 18px;
  border-radius: 980px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  width: fit-content;
}

.badge-pill-white {
  border: 1.5px solid rgba(255,255,255,0.6);
  color: rgba(255,255,255,0.85);
}

.badge-pill-dark {
  border: 1.5px solid #1C1C1E;
  color: #1C1C1E;
}

/* Flagship CTA buttons */
.btn-flagship-white {
  display: inline-flex;
  align-items: center;
  padding: 14px 32px;
  border-radius: 980px;
  font-size: 0.9rem;
  font-weight: 600;
  background: #fff;
  color: #1C1C1E;
  text-decoration: none;
  width: fit-content;
  transition: opacity 0.2s;
  margin-top: 8px;
}
.btn-flagship-white:hover { opacity: 0.88; }

.btn-flagship-dark {
  display: inline-flex;
  align-items: center;
  padding: 14px 32px;
  border-radius: 980px;
  font-size: 0.9rem;
  font-weight: 600;
  background: #1C1C1E;
  color: #fff;
  text-decoration: none;
  width: fit-content;
  transition: opacity 0.2s;
  margin-top: 8px;
}
.btn-flagship-dark:hover { opacity: 0.82; }

/* Dark flagship details/price color fix */
.flagship-light .featured-details {
  color: rgba(28,28,30,0.55);
}
.flagship-light .featured-price {
  color: #1C1C1E;
}
.flagship-light .featured-text {
  color: rgba(28,28,30,0.75);
}

@media (max-width: 768px) {
  .flagship-card {
    padding: 36px 24px;
  }
  .flagship-benefits {
    flex-direction: column;
    gap: 8px;
  }
}

/* Glassmorphism card variant (neurovoronka.html direction A) */
.service-card-glass {
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(28, 28, 30, 0.1);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}