/* === CSS RESET & BASE === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-dark: #0b0e15;
  --bg-card: #161b26;
  --bg-card-alt: #1c2130;
  --primary: #00e699;
  --primary-hover: #00cc88;
  --secondary: #7c8cf8;
  --secondary-hover: #6678f0;
  --text: #f1f3f9;
  --text-muted: #8890a2;
  --text-dim: #5c6370;
  --border: #202538;
  --border-light: #2a3042;
  --light-bg: #f8f9fc;
  --light-text: #1a1f2e;
  --light-muted: #6b7280;
  --light-card: #ffffff;
  --light-border: #e5e7ec;
  --danger: #ff5c5c;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow: 0 4px 24px rgba(0,0,0,0.25);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.35);
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  background: var(--bg-dark);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

ul {
  list-style: none;
}

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

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

/* === SITE NAVIGATION (.site-nav CLASS SELECTOR) === */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(11,14,21,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: var(--transition);
}

.site-nav.scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.site-nav .nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.site-nav .nav-logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text);
}

.site-nav .nav-logo .logo-accent {
  color: var(--primary);
}

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

.site-nav .nav-links a {
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
  position: relative;
}

.site-nav .nav-links a::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.site-nav .nav-links a:hover,
.site-nav .nav-links a:focus {
  color: var(--text);
}

.site-nav .nav-links a:hover::after,
.site-nav .nav-links a:focus::after {
  transform: scaleX(1);
}

.site-nav .nav-links .btn-nav {
  background: var(--primary);
  color: #0b0e15;
  padding: 10px 22px;
  border-radius: 8px;
  font-weight: 600;
  transition: background var(--transition), transform var(--transition);
}

.site-nav .nav-links .btn-nav::after {
  display: none;
}

.site-nav .nav-links .btn-nav:hover {
  background: var(--primary-hover);
  color: #0b0e15;
  transform: translateY(-1px);
}

.site-nav .nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.site-nav .nav-toggle span {
  display: block;
  width: 26px;
  height: 2.5px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

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

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

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

/* === HERO SECTION === */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -15%;
  width: 70%;
  height: 100%;
  background: radial-gradient(ellipse at center, rgba(0,230,153,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-section::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 60%;
  height: 80%;
  background: radial-gradient(ellipse at center, rgba(124,140,248,0.06) 0%, transparent 70%);
  pointer-events: none;
}

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

.hero-text h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 24px;
}

.hero-text h1 .highlight {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-text p {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 36px;
  max-width: 520px;
  line-height: 1.8;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1.4;
}

.btn-primary {
  background: var(--primary);
  color: #0b0e15;
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,230,153,0.3);
}

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

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

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

.hero-illustration {
  width: 100%;
  max-width: 480px;
  aspect-ratio: 1;
  background: linear-gradient(135deg, rgba(0,230,153,0.12) 0%, rgba(124,140,248,0.12) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.hero-illustration::before {
  content: '';
  position: absolute;
  inset: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(0,230,153,0.18) 0%, rgba(124,140,248,0.18) 100%);
}

.hero-icon {
  font-size: 6rem;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 8px 24px rgba(0,230,153,0.2));
}

/* === ABOUT SECTION === */
.about-section {
  padding: 100px 0;
  background: var(--bg-card);
  position: relative;
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2.5px;
  color: var(--primary);
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
  line-height: 1.25;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 600px;
  margin-bottom: 48px;
  line-height: 1.7;
}

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

.about-text p {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 20px;
}

.about-text .highlight-box {
  background: rgba(0,230,153,0.08);
  border-left: 3px solid var(--primary);
  padding: 18px 20px;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-weight: 500;
  color: var(--text);
  margin-top: 28px;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.about-feature-card {
  background: var(--bg-card-alt);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.about-feature-card:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.about-feature-card .feature-icon {
  font-size: 2rem;
  margin-bottom: 14px;
}

.about-feature-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.about-feature-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* === SERVICES SECTION === */
.services-section {
  padding: 100px 0;
  position: relative;
}

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

.service-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 36px;
  border: 1px solid var(--border);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  opacity: 0;
  transition: opacity var(--transition);
}

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

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

.service-card .service-number {
  font-size: 3rem;
  font-weight: 900;
  color: #0A2422;
  line-height: 1;
  margin-bottom: 8px;
}

.service-card .service-icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

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

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

/* === STATS SECTION === */
.stats-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(0,230,153,0.04) 50%, var(--bg-card) 100%);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

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

.stat-item .stat-number {
  font-size: 3rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  margin-bottom: 8px;
}

.stat-item .stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* === WHY CHOOSE US SECTION === */
.whyus-section {
  padding: 100px 0;
  background: var(--bg-card);
}

.whyus-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.whyus-card {
  text-align: center;
  padding: 36px 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-card-alt);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.whyus-card:hover {
  border-color: var(--secondary);
  transform: translateY(-3px);
}

.whyus-card .icon-circle {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(0,230,153,0.15), rgba(124,140,248,0.15));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}

.whyus-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

.whyus-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* === CONTACT SECTION === */
.contact-section {
  padding: 100px 0;
}

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

.contact-info h2 {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}

.contact-info > p {
  color: var(--text-muted);
  margin-bottom: 36px;
  font-size: 1.05rem;
  line-height: 1.7;
}

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

.contact-detail-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.contact-detail-item .contact-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-detail-item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.contact-detail-item p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.contact-form-box {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid var(--border);
}

.contact-form-box h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--text);
}

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

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--primary);
}

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

.form-submit-btn {
  width: 100%;
  padding: 16px;
  background: var(--primary);
  color: #0b0e15;
  font-size: 1rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
}

.form-submit-btn:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.form-response {
  margin-top: 16px;
  padding: 14px 18px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  display: none;
}

.form-response.success {
  display: block;
  background: rgba(0,230,153,0.12);
  color: var(--primary);
  border: 1px solid rgba(0,230,153,0.25);
}

.form-response.error {
  display: block;
  background: rgba(255,92,92,0.12);
  color: var(--danger);
  border: 1px solid rgba(255,92,92,0.25);
}

/* === FOOTER === */
.site-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 48px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}

.footer-brand h3 {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text);
}

.footer-brand h3 .logo-accent {
  color: var(--primary);
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text);
  margin-bottom: 18px;
}

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

.footer-col ul li a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid var(--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(--text-dim);
}

.footer-bottom .footer-links {
  display: flex;
  gap: 20px;
}

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

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

/* === SCROLL REVEAL ANIMATION === */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* === RESPONSIVE === */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-text p {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-buttons {
    justify-content: center;
  }
  .hero-visual {
    order: -1;
  }
  .hero-illustration {
    max-width: 280px;
  }
  .hero-icon {
    font-size: 4rem;
  }
  .hero-text h1 {
    font-size: 2.5rem;
  }
  .about-grid {
    grid-template-columns: 1fr;
  }
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .whyus-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .site-nav .nav-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(11,14,21,0.98);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 28px;
    z-index: 999;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }

  .site-nav .nav-links.active {
    display: flex;
  }

  .site-nav .nav-links a {
    font-size: 1.1rem;
  }

  .site-nav .nav-toggle {
    display: flex;
  }

  .hero-text h1 {
    font-size: 2rem;
  }
  .hero-text p {
    font-size: 1rem;
  }
  .section-title {
    font-size: 1.8rem;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
  .whyus-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .hero-section {
    padding: 100px 0 60px;
    min-height: auto;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .btn {
    padding: 12px 20px;
    font-size: 0.9rem;
  }
}