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

:root {
  --color-dark: #0C0E17;
  --color-dark-secondary: #111420;
  --color-darker: #07060D;
  --color-accent: #FF3860;
  --color-accent-dark: #D62D52;
  --color-accent-light: #FF5C7A;
  --color-secondary: #6366F1;
  --color-secondary-dark: #4F46E5;
  --color-light: #FBF9FE;
  --color-white: #FFFFFF;
  --color-text: #1C1A2E;
  --color-text-muted: #5B5874;
  --color-text-light: #8E8BA3;
  --color-border: #E8E6F5;
  --color-border-light: #F0EEF8;
  --color-card: #FFFFFF;
  --color-success: #10B981;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text);
  background-color: var(--color-light);
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  font-family: var(--font-sans);
  line-height: 1.2;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: var(--color-white);
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(255, 56, 96, 0.32);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 56, 96, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
  border-color: var(--color-white);
  background: rgba(255, 255, 255, 0.08);
}

.btn-full {
  width: 100%;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.18;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 17px;
  color: var(--color-text-muted);
  max-width: 640px;
  line-height: 1.7;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header .section-desc {
  margin: 0 auto;
}

/* NAVBAR */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(12, 14, 23, 0.82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background 0.3s ease;
}

.navbar.scrolled {
  background: rgba(12, 14, 23, 0.96);
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.15);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 68px;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
  color: var(--color-white);
  letter-spacing: -0.01em;
}

.navbar-logo-icon {
  font-size: 22px;
  color: var(--color-accent);
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.navbar-link {
  font-size: 14.5px;
  font-weight: 500;
  color: #b3b3bd;
  transition: color var(--transition);
  position: relative;
}

.navbar-link:hover,
.navbar-link:focus {
  color: var(--color-white);
}

.navbar-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}

.navbar-link:hover::after {
  width: 100%;
}

.navbar-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.navbar-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  border-radius: 1px;
  transition: all var(--transition);
}

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

.navbar-toggle.active .navbar-toggle-bar:nth-child(2) {
  opacity: 0;
}

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

/* HERO */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(160deg, var(--color-dark) 0%, #151929 40%, var(--color-dark-secondary) 100%);
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero-bg-shape {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.hero-bg-shape-1 {
  top: -120px;
  right: -80px;
  width: 560px;
  height: 560px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.13) 0%, transparent 70%);
}

.hero-bg-shape-2 {
  bottom: -100px;
  left: -60px;
  width: 440px;
  height: 440px;
  background: radial-gradient(circle, rgba(255, 56, 96, 0.1) 0%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.hero-badge {
  display: inline-block;
  padding: 8px 18px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--color-accent-light);
  background: rgba(255, 56, 96, 0.1);
  border: 1px solid rgba(255, 56, 96, 0.22);
  border-radius: 50px;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 900;
  color: var(--color-white);
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 17px;
  color: #a3a3ad;
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.hero-scroll-arrow {
  display: block;
  width: 28px;
  height: 28px;
  border-right: 2px solid rgba(255, 255, 255, 0.35);
  border-bottom: 2px solid rgba(255, 255, 255, 0.35);
  transform: rotate(45deg);
  animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50% { transform: rotate(45deg) translateY(8px); }
}

/* SERVICES */
.services-section {
  padding: 100px 0;
  background: var(--color-light);
}

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

.service-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 32px 28px 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.service-card:hover {
  border-color: var(--color-border-light);
  box-shadow: 0 12px 40px rgba(12, 14, 23, 0.08);
  transform: translateY(-4px);
}

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

.service-card-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(255, 56, 96, 0.08), rgba(99, 102, 241, 0.08));
  border-radius: 12px;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.service-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.service-card-text {
  font-size: 14.5px;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ABOUT */
.about-section {
  padding: 100px 0;
  background: var(--color-dark);
  color: var(--color-white);
}

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

.about-section .section-desc {
  color: #a8a8b2;
}

.about-section .section-tag {
  color: var(--color-accent-light);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 220px 220px;
  gap: 16px;
}

.about-visual-block {
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.about-visual-block-a {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  grid-row: 1 / 3;
}

.about-visual-block-b {
  background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-dark));
  grid-row: 1 / 3;
}

.about-visual-inner {
  text-align: center;
  color: var(--color-white);
}

.about-stat-big {
  display: block;
  font-size: 48px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 6px;
}

.about-stat-label {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.about-text p {
  font-size: 15.5px;
  color: #a3a3ad;
  line-height: 1.72;
  margin-bottom: 14px;
}

.about-text p:last-child {
  margin-bottom: 0;
}

/* APPROACH */
.approach-section {
  padding: 100px 0;
  background: var(--color-light);
}

.approach-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.approach-step {
  text-align: center;
  padding: 32px 20px;
  position: relative;
}

.approach-step::after {
  content: '';
  position: absolute;
  top: 28px;
  right: -16px;
  width: 32px;
  height: 1px;
  background: var(--color-border);
}

.approach-step:last-child::after {
  display: none;
}

.approach-step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
  color: var(--color-white);
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}

.approach-step-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.approach-step-text {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* STATS */
.stats-section {
  padding: 80px 0;
  background: var(--color-light);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item {
  padding: 36px 20px;
}

.stat-number {
  font-size: 52px;
  font-weight: 900;
  color: var(--color-accent);
  line-height: 1;
  letter-spacing: -0.03em;
  display: inline;
}

.stat-suffix {
  font-size: 40px;
  font-weight: 800;
  color: var(--color-accent);
  margin-left: 2px;
}

.stat-desc {
  display: block;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 10px;
}

/* CONTACT */
.contact-section {
  padding: 100px 0;
  background: var(--color-dark-secondary);
  color: var(--color-white);
}

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

.contact-section .section-title + p {
  color: #9e9ea7;
  font-size: 15.5px;
  line-height: 1.7;
  margin-bottom: 28px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: flex-start;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 8px;
}

.contact-detail-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.contact-detail-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent-light);
}

.contact-detail-link {
  font-size: 15px;
  color: #c2c2c9;
  transition: color var(--transition);
}

.contact-detail-link:hover {
  color: var(--color-white);
}

.contact-detail-text {
  font-size: 15px;
  color: #c2c2c9;
}

.contact-form {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 36px;
}

.contact-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.contact-form-field {
  margin-bottom: 18px;
}

.contact-form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: #b7b7bf;
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}

.contact-form-input,
.contact-form-textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 14.5px;
  font-family: var(--font-sans);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  color: var(--color-white);
  outline: none;
  transition: border-color var(--transition);
}

.contact-form-input:focus,
.contact-form-textarea:focus {
  border-color: var(--color-accent);
}

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

.contact-form-note {
  text-align: center;
  font-size: 13px;
  margin-top: 12px;
  color: #7d7d87;
}

.contact-form-note.success {
  color: var(--color-success);
}

/* FOOTER */
.site-footer {
  background: var(--color-darker);
  color: #9e9ea7;
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 44px;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 19px;
  color: var(--color-white);
  margin-bottom: 12px;
}

.footer-logo-icon {
  color: var(--color-accent);
}

.footer-brand-desc {
  font-size: 14px;
  line-height: 1.6;
  color: #73737d;
}

.footer-links-title {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-white);
  margin-bottom: 16px;
}

.footer-links-list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-link {
  font-size: 14px;
  color: #83838d;
  transition: color var(--transition);
}

.footer-link:hover {
  color: var(--color-accent-light);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 24px;
  text-align: center;
}

.footer-copy {
  font-size: 13px;
  color: #686873;
  margin-bottom: 6px;
}

.footer-address {
  font-size: 12px;
  color: #53535d;
}

/* FADE-UP ANIMATION */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

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

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

  .approach-step::after {
    display: none;
  }

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

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

@media (max-width: 768px) {
  .navbar-links {
    position: fixed;
    top: 68px;
    left: 0;
    width: 100%;
    background: rgba(12, 14, 23, 0.97);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    flex-direction: column;
    align-items: center;
    padding: 24px 0;
    gap: 20px;
    transform: translateY(-110%);
    opacity: 0;
    transition: all 0.35s ease;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .navbar-links.open {
    transform: translateY(0);
    opacity: 1;
  }

  .navbar-toggle {
    display: flex;
  }

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

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

  .about-visual {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 160px;
  }

  .about-visual-block-a,
  .about-visual-block-b {
    grid-row: 1;
  }

  .about-stat-big {
    font-size: 36px;
  }

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

  .approach-step::after {
    display: none;
  }

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

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

  .contact-form-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-links-list {
    align-items: center;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    text-align: center;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 30px;
  }

  .hero-subtitle {
    font-size: 15px;
  }

  .section-title {
    font-size: 26px;
  }

  .stat-number {
    font-size: 40px;
  }

  .stat-suffix {
    font-size: 30px;
  }
}