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

:root {
  --color-bg: #12131C;
  --color-surface: #1C1D28;
  --color-surface-alt: #1A1B26;
  --color-surface-hover: #262734;
  --color-primary: #00D4B8;
  --color-primary-dark: #00B89F;
  --color-primary-glow: rgba(0, 212, 184, 0.18);
  --color-secondary: #C084FC;
  --color-secondary-glow: rgba(192, 132, 252, 0.15);
  --color-text: #ECEBF2;
  --color-text-secondary: #B0AFBC;
  --color-text-muted: #9190A0;
  --color-border: #292836;
  --color-border-light: #333246;
  --color-accent: #FF7043;
  --color-accent-glow: rgba(255, 112, 67, 0.15);
  --font-sans: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica Neue, Arial, sans-serif;
  --font-mono: JetBrains Mono, Fira Code, Consolas, Monaco, monospace;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.6);
  --shadow-glow-primary: 0 0 30px rgba(0, 212, 184, 0.25);
  --shadow-glow-secondary: 0 0 30px rgba(192, 132, 252, 0.2);
  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
}

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

a:hover {
  color: var(--color-primary-dark);
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 28px;
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.6rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 620px;
  line-height: 1.7;
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-sans);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  letter-spacing: 0.01em;
}

.btn-primary {
  background: var(--color-primary);
  color: #0D0E15;
  box-shadow: 0 0 24px var(--color-primary-glow);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-primary);
  color: #0D0E15;
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-border-light);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 17px 40px;
  font-size: 1.08rem;
}

/* ---------- NAVIGATION ---------- */
.main-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(18, 19, 28, 0.85);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: all var(--transition);
}

.main-nav.scrolled {
  background: rgba(18, 19, 28, 0.95);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.main-nav .nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 28px;
  height: 70px;
}

.main-nav .nav-logo {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 10px;
}

.main-nav .nav-logo .logo-dot {
  width: 10px;
  height: 10px;
  background: var(--color-primary);
  border-radius: 50%;
  box-shadow: 0 0 14px var(--color-primary-glow);
}

.main-nav .nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.main-nav .nav-links a {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition);
  position: relative;
}

.main-nav .nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
  border-radius: 2px;
}

.main-nav .nav-links a:hover {
  color: var(--color-text);
}

.main-nav .nav-links a:hover::after {
  width: 100%;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 6px;
  z-index: 1001;
}

.mobile-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

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

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

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

/* ---------- HERO ---------- */
.hero-section {
  padding: 180px 0 120px;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, var(--color-primary-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-section::after {
  content: '';
  position: absolute;
  bottom: -150px;
  left: -150px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-secondary-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-section .container {
  position: relative;
  z-index: 1;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: center;
}

.hero-content h1 {
  font-size: 3.6rem;
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero-content h1 .highlight {
  color: var(--color-primary);
}

.hero-content .hero-desc {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: 36px;
  max-width: 520px;
}

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

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  width: 100%;
  max-width: 440px;
}

.hero-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  transition: all var(--transition);
}

.hero-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow-primary);
  transform: translateY(-4px);
}

.hero-card .card-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.hero-card .card-value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.hero-card .card-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

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

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: center;
}

.about-text .section-title {
  margin-bottom: 24px;
}

.about-text p {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 18px;
}

.about-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.metric-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: center;
  transition: all var(--transition);
}

.metric-card:hover {
  border-color: var(--color-secondary);
  box-shadow: var(--shadow-glow-secondary);
  transform: translateY(-2px);
}

.metric-card .metric-number {
  font-size: 2.4rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 8px;
}

.metric-card .metric-label {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ---------- SERVICES ---------- */
.services-section {
  padding: 100px 0;
}

.services-section .section-header {
  text-align: center;
  margin-bottom: 60px;
}

.services-section .section-header .section-subtitle {
  margin: 0 auto;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px 30px;
  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-primary), var(--color-secondary));
  opacity: 0;
  transition: opacity var(--transition);
}

.service-card:hover::before {
  opacity: 1;
}

.service-card:hover {
  border-color: var(--color-border-light);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.service-card .service-icon {
  width: 56px;
  height: 56px;
  background: var(--color-primary-glow);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 24px;
  transition: all var(--transition);
}

.service-card:hover .service-icon {
  background: rgba(0, 212, 184, 0.25);
  box-shadow: var(--shadow-glow-primary);
}

.service-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-text);
}

.service-card p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ---------- DIFFERENTIATORS ---------- */
.differentiators-section {
  padding: 100px 0;
  background: var(--color-surface-alt);
}

.differentiators-section .section-header {
  text-align: center;
  margin-bottom: 60px;
}

.differentiators-section .section-header .section-subtitle {
  margin: 0 auto;
}

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

.feature-item {
  text-align: center;
  padding: 36px 24px;
}

.feature-item .feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  transition: all var(--transition);
}

.feature-item:hover .feature-icon {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow-primary);
  transform: scale(1.08);
}

.feature-item h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-item p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ---------- CTA ---------- */
.cta-section {
  padding: 100px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--color-primary-glow) 0%, transparent 60%);
  pointer-events: none;
}

.cta-section .container {
  position: relative;
  z-index: 1;
}

.cta-content {
  max-width: 680px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}

.cta-content p {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: 36px;
  line-height: 1.7;
}

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

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

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info h2 {
  font-size: 2.6rem;
  font-weight: 800;
  margin-bottom: 24px;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.contact-info .contact-desc {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 32px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-item .contact-icon {
  width: 48px;
  height: 48px;
  background: var(--color-primary-glow);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.contact-item p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.contact-form-wrapper {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 16px;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  transition: all var(--transition);
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.form-group textarea {
  min-height: 130px;
}

.form-submit-row {
  display: flex;
  justify-content: flex-end;
}

.form-status {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  display: none;
}

.form-status.success {
  display: block;
  background: rgba(0, 212, 184, 0.12);
  color: var(--color-primary);
  border: 1px solid rgba(0, 212, 184, 0.3);
}

.form-status.error {
  display: block;
  background: rgba(255, 112, 67, 0.12);
  color: var(--color-accent);
  border: 1px solid rgba(255, 112, 67, 0.3);
}

/* ---------- FOOTER ---------- */
.site-footer {
  padding: 60px 0 40px;
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 50px;
  margin-bottom: 40px;
}

.footer-brand .footer-logo {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 18px;
  color: var(--color-text-secondary);
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.footer-col ul li a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.footer-bottom .footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-bottom .footer-links a {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

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

/* ---------- SCROLL ANIMATIONS ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

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

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1024px) {
  .hero-grid,
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 50px;
  }

  .hero-visual {
    order: -1;
  }

  .hero-card-grid {
    max-width: 380px;
  }

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

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

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

  .section-title {
    font-size: 2.2rem;
  }

  .hero-content h1 {
    font-size: 2.8rem;
  }
}

@media (max-width: 768px) {
  .main-nav .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-surface);
    flex-direction: column;
    padding: 100px 32px 40px;
    gap: 28px;
    transition: right var(--transition);
    box-shadow: var(--shadow-lg);
    border-left: 1px solid var(--color-border);
  }

  .main-nav .nav-links.active {
    right: 0;
  }

  .mobile-toggle {
    display: flex;
  }

  .hero-section {
    padding: 140px 0 80px;
  }

  .hero-content h1 {
    font-size: 2.2rem;
  }

  .section-title {
    font-size: 1.9rem;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

  .hero-card-grid {
    grid-template-columns: 1fr;
    max-width: 240px;
  }

  .about-grid {
    gap: 40px;
  }

  .contact-form-wrapper {
    padding: 28px 20px;
  }

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