/* ============================================
   ЮЛИЯ СОЗИНОВА / SERM & Digital
   Design System & Styles
   ============================================ */

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  /* Brand Colors */
  --color-cream: #F7F4F1;
  --color-warm-beige: #E9D7C7;
  --color-coffee: #8B6B5C;
  --color-graphite: #2C2C2C;
  --color-white: #FFFFFF;
  --color-coffee-light: #A8897B;
  --color-coffee-dark: #6B4F43;
  --color-cream-dark: #EDE5DC;
  --color-overlay: rgba(44, 44, 44, 0.6);
  --color-glass: rgba(255, 255, 255, 0.12);
  --color-glass-border: rgba(255, 255, 255, 0.18);
  --color-success: #4A8C6F;
  --color-danger: #C0392B;

  /* Typography */
  --font-heading: 'GFS Didot', 'Didot', 'Playfair Display', Georgia, serif;
  --font-body: 'Manrope', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Layout */
  --container-max: 1200px;
  --container-narrow: 900px;
  --header-height: 80px;

  /* Borders & Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(44, 44, 44, 0.06);
  --shadow-md: 0 4px 20px rgba(44, 44, 44, 0.08);
  --shadow-lg: 0 8px 40px rgba(44, 44, 44, 0.12);
  --shadow-xl: 0 16px 60px rgba(44, 44, 44, 0.16);
  --shadow-glow: 0 0 40px rgba(139, 107, 92, 0.15);

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--color-graphite);
  background-color: var(--color-cream);
  line-height: 1.7;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.6rem);
}

p {
  font-size: clamp(0.95rem, 1.2vw, 1.05rem);
  line-height: 1.75;
}

/* --- Utility Classes --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding: var(--space-5xl) 0;
  position: relative;
}

.section--cream {
  background-color: var(--color-cream);
}

.section--white {
  background-color: var(--color-white);
}

.section--graphite {
  background-color: var(--color-graphite);
  color: var(--color-cream);
}

.section--warm {
  background: linear-gradient(180deg, var(--color-cream) 0%, var(--color-cream-dark) 100%);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-coffee);
  margin-bottom: var(--space-lg);
}

.section-label::before {
  content: '';
  display: block;
  width: 32px;
  height: 1px;
  background: var(--color-coffee);
}

.section-title {
  margin-bottom: var(--space-lg);
}

.section-subtitle {
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.3vw, 1.1rem);
  color: var(--color-coffee-light);
  max-width: 640px;
  line-height: 1.7;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.btn:hover::before {
  opacity: 1;
}

.btn--primary {
  background: var(--color-graphite);
  color: var(--color-cream);
  box-shadow: var(--shadow-md);
}

.btn--primary:hover {
  background: var(--color-coffee-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--secondary {
  background: transparent;
  color: var(--color-graphite);
  border: 1.5px solid var(--color-graphite);
}

.btn--secondary:hover {
  background: var(--color-graphite);
  color: var(--color-cream);
  transform: translateY(-2px);
}

.btn--accent {
  background: linear-gradient(135deg, var(--color-coffee) 0%, var(--color-coffee-dark) 100%);
  color: var(--color-cream);
  box-shadow: var(--shadow-md);
}

.btn--accent:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn--light {
  background: var(--color-cream);
  color: var(--color-graphite);
}

.btn--light:hover {
  background: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--sm {
  padding: 10px 22px;
  font-size: 0.82rem;
}

.btn--icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 50%;
}

/* --- Scroll Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-scale.visible {
  opacity: 1;
  transform: scale(1);
}

/* stagger delays */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

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

.header.scrolled {
  background: rgba(247, 244, 241, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  box-shadow: 0 1px 20px rgba(44, 44, 44, 0.06);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-family: var(--font-heading);
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  z-index: 1001;
}

.header__logo-img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.header__logo-name {
  font-weight: 400;
  font-size: 1rem;
}

.header__logo-descriptor {
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-coffee);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
}

.header__menu {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.header__menu a {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  position: relative;
  padding: var(--space-xs) 0;
}

.header__menu a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--color-coffee);
  transition: width var(--transition-base);
}

.header__menu a:hover::after {
  width: 100%;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

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

.header__social-link {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(44, 44, 44, 0.06);
  transition: all var(--transition-fast);
  font-size: 0.85rem;
}

.header__social-link:hover {
  background: var(--color-graphite);
  color: var(--color-cream);
  transform: scale(1.08);
}

/* Burger Menu */
.header__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  z-index: 1001;
}

.header__burger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-graphite);
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}

.header__burger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.header__burger.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.header__burger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu Overlay */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: rgba(247, 244, 241, 0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-slow);
}

.mobile-menu.open {
  opacity: 1;
  visibility: visible;
}

.mobile-menu a {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-base);
}

.mobile-menu.open a {
  opacity: 1;
  transform: translateY(0);
}

.mobile-menu.open a:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu.open a:nth-child(2) { transition-delay: 0.15s; }
.mobile-menu.open a:nth-child(3) { transition-delay: 0.2s; }
.mobile-menu.open a:nth-child(4) { transition-delay: 0.25s; }
.mobile-menu.open a:nth-child(5) { transition-delay: 0.3s; }

.mobile-menu__cta {
  margin-top: var(--space-xl);
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-base);
}

.mobile-menu.open .mobile-menu__cta {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.35s;
}

/* ============================================
   2. HERO SECTION
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  position: relative;
  overflow: hidden;
  background: var(--color-cream);
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60%;
  height: 140%;
  background: radial-gradient(ellipse at center, var(--color-warm-beige) 0%, transparent 70%);
  opacity: 0.4;
  pointer-events: none;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero__content {
  padding: var(--space-3xl) 0;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 8px 16px;
  background: rgba(139, 107, 92, 0.08);
  border: 1px solid rgba(139, 107, 92, 0.15);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-coffee);
  margin-bottom: var(--space-xl);
  animation: fadeInDown 0.8s ease forwards;
}

.hero__badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-coffee);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero__title {
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.8s 0.2s ease both;
}

.hero__title em {
  font-style: normal;
  color: var(--color-coffee);
  position: relative;
}

.hero__title em::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  width: 100%;
  height: 8px;
  background: var(--color-warm-beige);
  opacity: 0.5;
  z-index: -1;
  border-radius: 4px;
}

.hero__subtitle {
  font-size: clamp(0.95rem, 1.2vw, 1.05rem);
  color: var(--color-coffee-light);
  margin-bottom: var(--space-2xl);
  max-width: 480px;
  animation: fadeInUp 0.8s 0.4s ease both;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero__cta-group {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
  animation: fadeInUp 0.8s 0.5s ease both;
}

.hero__trust-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  animation: fadeInUp 0.8s 0.6s ease both;
}

.hero__trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-coffee-light);
}

.hero__trust-item .icon {
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-coffee);
}

.hero__image {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  animation: fadeInRight 1s 0.3s ease both;
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

.hero__image-wrapper {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  max-width: 420px;
  width: 100%;
}

.hero__image-wrapper::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(44, 44, 44, 0.1) 100%);
  pointer-events: none;
}

.hero__image-wrapper img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 6s ease;
}

.hero__image-wrapper:hover img {
  transform: scale(1.03);
}

.hero__image-decoration {
  position: absolute;
  width: 200px;
  height: 200px;
  border: 1.5px solid var(--color-warm-beige);
  border-radius: var(--radius-xl);
  top: -20px;
  right: -20px;
  z-index: -1;
  opacity: 0.6;
}

.hero__floating-card {
  position: absolute;
  bottom: 40px;
  left: -40px;
  background: var(--color-white);
  padding: 16px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  animation: floatCard 4s ease-in-out infinite;
  z-index: 2;
}

@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.hero__floating-card .stat-value {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  color: var(--color-coffee);
  line-height: 1;
}

.hero__floating-card .stat-label {
  font-size: 0.72rem;
  color: var(--color-coffee-light);
  font-weight: 500;
}

/* ============================================
   3. POSITIONING SECTION
   ============================================ */
.positioning {
  background: var(--color-white);
}

.positioning__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  margin-top: var(--space-3xl);
}

.positioning__card {
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}

.positioning__card--bad {
  background: rgba(192, 57, 43, 0.04);
  border: 1px solid rgba(192, 57, 43, 0.1);
}

.positioning__card--good {
  background: rgba(74, 140, 111, 0.04);
  border: 1px solid rgba(74, 140, 111, 0.1);
}

.positioning__card-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.positioning__card-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.positioning__card--bad .positioning__card-icon {
  background: rgba(192, 57, 43, 0.1);
}

.positioning__card--good .positioning__card-icon {
  background: rgba(74, 140, 111, 0.1);
}

.positioning__card h3 {
  font-size: 1.1rem;
}

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

.positioning__card-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: 0.9rem;
  line-height: 1.6;
}

.positioning__card-list li .check {
  flex-shrink: 0;
  margin-top: 3px;
}

.positioning__card--bad .check { color: var(--color-danger); }
.positioning__card--good .check { color: var(--color-success); }

/* ============================================
   4. SERVICES SECTION
   ============================================ */
.services__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
}

.service-card {
  position: relative;
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  background: var(--color-white);
  border: 1px solid rgba(44, 44, 44, 0.06);
  transition: all var(--transition-base);
  overflow: hidden;
  cursor: pointer;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-coffee), var(--color-warm-beige));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.service-card__number {
  font-family: var(--font-heading);
  font-size: 3rem;
  color: var(--color-warm-beige);
  line-height: 1;
  margin-bottom: var(--space-md);
  opacity: 0.6;
}

.service-card__title {
  font-size: 1.2rem;
  margin-bottom: var(--space-md);
}

.service-card__description {
  font-size: 0.88rem;
  color: var(--color-coffee-light);
  margin-bottom: var(--space-lg);
}

.service-card__features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.service-card__tag {
  padding: 4px 12px;
  background: rgba(139, 107, 92, 0.06);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-coffee);
}

.service-card__arrow {
  position: absolute;
  top: var(--space-xl);
  right: var(--space-xl);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(44, 44, 44, 0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  font-size: 0.9rem;
}

.service-card:hover .service-card__arrow {
  background: var(--color-graphite);
  color: var(--color-cream);
  transform: translate(2px, -2px);
}

/* ============================================
   5. CASES SECTION
   ============================================ */
.cases {
  background: var(--color-graphite);
  color: var(--color-cream);
}

.cases .section-label {
  color: var(--color-warm-beige);
}

.cases .section-label::before {
  background: var(--color-warm-beige);
}

.cases .section-subtitle {
  color: rgba(247, 244, 241, 0.6);
}

.cases__tabs {
  display: flex;
  gap: var(--space-sm);
  margin: var(--space-2xl) 0;
  flex-wrap: wrap;
}

.cases__tab {
  padding: 10px 22px;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 500;
  color: rgba(247, 244, 241, 0.6);
  border: 1px solid rgba(247, 244, 241, 0.15);
  transition: all var(--transition-base);
  cursor: pointer;
}

.cases__tab:hover {
  color: var(--color-cream);
  border-color: rgba(247, 244, 241, 0.3);
}

.cases__tab.active {
  background: var(--color-cream);
  color: var(--color-graphite);
  border-color: transparent;
}

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

.case-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition: all var(--transition-base);
  backdrop-filter: blur(8px);
}

.case-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-4px);
}

.case-card__industry {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-warm-beige);
  margin-bottom: var(--space-lg);
}

.case-card__metrics {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.case-card__metric {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.case-card__metric-label {
  font-size: 0.78rem;
  color: rgba(247, 244, 241, 0.5);
  min-width: 80px;
}

.case-card__metric-value {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.case-card__metric-old {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: rgba(247, 244, 241, 0.4);
  text-decoration: line-through;
}

.case-card__metric-arrow {
  color: var(--color-warm-beige);
  font-size: 0.8rem;
}

.case-card__metric-new {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  color: var(--color-warm-beige);
}

.case-card__result {
  padding: var(--space-md);
  background: rgba(74, 140, 111, 0.12);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  text-align: center;
  font-weight: 600;
  color: #7CD4A8;
}

.case-card__summary {
  font-size: 0.85rem;
  color: rgba(247, 244, 241, 0.6);
  margin-top: var(--space-lg);
  line-height: 1.6;
}

/* ============================================
   6. METHODOLOGY SECTION
   ============================================ */
.methodology__steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
  position: relative;
}

.methodology__steps::before {
  content: '';
  position: absolute;
  top: 35px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-warm-beige), var(--color-coffee), var(--color-warm-beige));
  opacity: 0.3;
}

.method-step {
  text-align: center;
  position: relative;
}

.method-step__number {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: var(--color-white);
  border: 2px solid var(--color-warm-beige);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-xl);
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: var(--color-coffee);
  position: relative;
  z-index: 1;
  transition: all var(--transition-base);
}

.method-step:hover .method-step__number {
  background: var(--color-coffee);
  color: var(--color-cream);
  border-color: var(--color-coffee);
  transform: scale(1.1);
  box-shadow: var(--shadow-glow);
}

.method-step__title {
  font-size: 1.05rem;
  margin-bottom: var(--space-sm);
}

.method-step__desc {
  font-size: 0.82rem;
  color: var(--color-coffee-light);
  line-height: 1.6;
}

/* ============================================
   7. EXPERT SECTION
   ============================================ */
.expert__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-4xl);
  align-items: center;
  margin-top: var(--space-3xl);
}

.expert__image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.expert__image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 6s ease;
}

.expert__image:hover img {
  transform: scale(1.03);
}

.expert__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

.expert__stat {
  padding: var(--space-lg);
  background: rgba(139, 107, 92, 0.05);
  border-radius: var(--radius-md);
  text-align: center;
  transition: all var(--transition-base);
}

.expert__stat:hover {
  background: rgba(139, 107, 92, 0.1);
  transform: translateY(-2px);
}

.expert__stat-value {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--color-coffee);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.expert__stat-label {
  font-size: 0.78rem;
  color: var(--color-coffee-light);
  font-weight: 500;
}

.expert__text p {
  margin-bottom: var(--space-lg);
  color: var(--color-coffee-light);
}

.expert__principles {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.expert__principle {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.expert__principle:hover {
  background: rgba(139, 107, 92, 0.04);
}

.expert__principle-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(139, 107, 92, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--color-coffee);
}

.expert__principle-text {
  font-size: 0.88rem;
  line-height: 1.5;
}

/* ============================================
   8. QUIZ SECTION
   ============================================ */
.quiz {
  background: linear-gradient(135deg, var(--color-graphite) 0%, #1a1a1a 100%);
  color: var(--color-white);
  overflow: hidden;
  position: relative;
}

.quiz::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(ellipse at center, rgba(139, 107, 92, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.quiz .section-label {
  color: var(--color-warm-beige);
}

.quiz .section-label::before {
  background: var(--color-warm-beige);
}

.quiz__container {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

.quiz__progress {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  margin: var(--space-2xl) 0;
}

.quiz__progress-dot {
  width: 40px;
  height: 4px;
  border-radius: 2px;
  background: rgba(247, 244, 241, 0.15);
  transition: all var(--transition-base);
}

.quiz__progress-dot.active {
  background: var(--color-warm-beige);
  width: 60px;
}

.quiz__progress-dot.completed {
  background: var(--color-coffee);
}

.quiz__step {
  display: none;
}

.quiz__step.active {
  display: block;
  animation: fadeInUp 0.5s ease;
}

.quiz__question {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin-bottom: var(--space-2xl);
}

.quiz__options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.quiz__option {
  padding: var(--space-lg);
  border: 1px solid rgba(247, 244, 241, 0.15);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: left;
  color: var(--color-white);
}

.quiz__option:hover {
  border-color: var(--color-warm-beige);
  background: rgba(233, 215, 199, 0.08);
}

.quiz__option.selected {
  border-color: var(--color-warm-beige);
  background: rgba(233, 215, 199, 0.12);
}

.quiz__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-width: 400px;
  margin: 0 auto;
}

.quiz__input {
  padding: 14px 20px;
  border: 1px solid rgba(247, 244, 241, 0.2);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.quiz__input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.quiz__input:focus {
  outline: none;
  border-color: var(--color-warm-beige);
  background: rgba(255, 255, 255, 0.08);
}

/* ============================================
   9. REVIEWS SECTION
   ============================================ */
.reviews__carousel {
  display: flex;
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -ms-overflow-style: none;
  scrollbar-width: none;
  padding-bottom: var(--space-md);
}

.reviews__carousel::-webkit-scrollbar {
  display: none;
}

.review-card {
  min-width: 360px;
  max-width: 400px;
  flex-shrink: 0;
  scroll-snap-align: start;
  padding: var(--space-2xl);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(44, 44, 44, 0.05);
  transition: all var(--transition-base);
}

.review-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.review-card__stars {
  display: flex;
  gap: 2px;
  margin-bottom: var(--space-lg);
  color: var(--color-coffee);
  font-size: 0.9rem;
}

.review-card__text {
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: var(--space-xl);
  color: var(--color-graphite);
  font-style: italic;
}

.review-card__author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.review-card__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-warm-beige), var(--color-coffee));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--color-white);
}

.review-card__author-name {
  font-weight: 600;
  font-size: 0.88rem;
}

.review-card__author-role {
  font-size: 0.75rem;
  color: var(--color-coffee-light);
}

.reviews__nav {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-top: var(--space-2xl);
}

.reviews__nav-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1.5px solid var(--color-graphite);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  font-size: 1rem;
}

.reviews__nav-btn:hover {
  background: var(--color-graphite);
  color: var(--color-cream);
}

/* ============================================
   10. FAQ SECTION
   ============================================ */
.faq__list {
  max-width: 800px;
  margin: var(--space-3xl) auto 0;
}

.faq-item {
  border-bottom: 1px solid rgba(44, 44, 44, 0.08);
}

.faq-item__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xl) 0;
  font-size: 1rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.faq-item__question:hover {
  color: var(--color-coffee);
}

.faq-item__icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(139, 107, 92, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-base);
  font-size: 0.85rem;
}

.faq-item.open .faq-item__icon {
  background: var(--color-graphite);
  color: var(--color-cream);
  transform: rotate(45deg);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), padding var(--transition-slow);
}

.faq-item.open .faq-item__answer {
  max-height: 300px;
  padding-bottom: var(--space-xl);
}

.faq-item__answer p {
  font-size: 0.9rem;
  color: var(--color-coffee-light);
  line-height: 1.7;
}

/* ============================================
   11. FOOTER
   ============================================ */
.footer {
  background: var(--color-graphite);
  color: var(--color-cream);
  padding: var(--space-4xl) 0 var(--space-xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-family: var(--font-heading);
  font-size: 1.1rem;
}

.footer__logo-img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.footer__description {
  font-size: 0.85rem;
  color: rgba(247, 244, 241, 0.5);
  line-height: 1.7;
  max-width: 280px;
}

.footer__socials {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.footer__social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(247, 244, 241, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  transition: all var(--transition-base);
}

.footer__social-link:hover {
  background: var(--color-cream);
  color: var(--color-graphite);
  border-color: transparent;
}

.footer__column h4 {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-warm-beige);
  margin-bottom: var(--space-xl);
}

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

.footer__links a {
  font-size: 0.88rem;
  color: rgba(247, 244, 241, 0.6);
  transition: all var(--transition-fast);
}

.footer__links a:hover {
  color: var(--color-cream);
  transform: translateX(4px);
}

.footer__bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(247, 244, 241, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer__legal {
  font-size: 0.75rem;
  color: rgba(247, 244, 241, 0.35);
  line-height: 1.6;
}

.footer__legal a {
  color: rgba(247, 244, 241, 0.5);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.footer__legal a:hover {
  color: var(--color-cream);
}

/* ============================================
   FLOATING MESSENGER BAR
   ============================================ */
.messenger-bar {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  align-items: flex-end;
}

.messenger-bar__toggle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-coffee) 0%, var(--color-coffee-dark) 100%);
  color: var(--color-cream);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
  cursor: pointer;
}

.messenger-bar__toggle:hover {
  transform: scale(1.08);
  box-shadow: var(--shadow-glow);
}

.messenger-bar__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  align-items: flex-end;
  opacity: 0;
  transform: translateY(10px);
  visibility: hidden;
  transition: all var(--transition-base);
}

.messenger-bar.open .messenger-bar__links {
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
}

.messenger-bar__link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px 18px;
  background: var(--color-white);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-md);
  font-size: 0.82rem;
  font-weight: 500;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.messenger-bar__link:hover {
  transform: translateX(-4px);
  box-shadow: var(--shadow-lg);
}

.messenger-bar__link-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: white;
}

.messenger-bar__link--tg .messenger-bar__link-icon {
  background: #229ED9;
}

.messenger-bar__link--vk .messenger-bar__link-icon {
  background: #0077FF;
}

.messenger-bar__link--whatsapp .messenger-bar__link-icon {
  background: #25D366;
}

/* ============================================
   CTA BANNER (before footer)
   ============================================ */
.cta-banner {
  background: linear-gradient(135deg, var(--color-coffee) 0%, var(--color-coffee-dark) 100%);
  color: var(--color-cream);
  text-align: center;
  padding: var(--space-4xl) 0;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(ellipse at center, rgba(255,255,255,0.08) 0%, transparent 60%);
  pointer-events: none;
}

.cta-banner__title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: var(--space-lg);
  position: relative;
}

.cta-banner__subtitle {
  font-size: 1rem;
  opacity: 0.8;
  margin-bottom: var(--space-2xl);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    text-align: center;
  }

  .hero__content {
    order: 1;
    padding: var(--space-xl) 0 0;
  }

  .hero__subtitle {
    margin: 0 auto var(--space-2xl);
  }

  .hero__cta-group {
    justify-content: center;
  }

  .hero__trust-bar {
    justify-content: center;
  }

  .hero__image {
    order: 2;
  }

  .hero__floating-card {
    left: auto;
    right: -10px;
    bottom: 20px;
  }

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

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

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

  .methodology__steps {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
  }

  .methodology__steps::before {
    display: none;
  }

  .expert__grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 68px;
  }

  .header__nav {
    display: none;
  }

  .header__actions .btn {
    display: none;
  }

  .header__burger {
    display: flex;
  }

  .hero {
    min-height: auto;
    padding-top: calc(var(--header-height) + var(--space-2xl));
    padding-bottom: var(--space-3xl);
  }

  .hero__image-wrapper {
    max-width: 300px;
  }

  .hero__floating-card {
    display: none;
  }

  .hero__image-decoration {
    display: none;
  }

  .section {
    padding: var(--space-3xl) 0;
  }

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

  .methodology__steps {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

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

  .review-card {
    min-width: 300px;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }

  .messenger-bar {
    bottom: 16px;
    right: 16px;
  }

  .messenger-bar__toggle {
    width: 50px;
    height: 50px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }

  h1 {
    font-size: 1.8rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .hero__cta-group {
    flex-direction: column;
    width: 100%;
  }

  .hero__cta-group .btn {
    width: 100%;
  }

  .hero__trust-bar {
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
  }

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