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

:root {
  --teal: #0D9488;
  --teal-dark: #0F766E;
  --teal-light: #14B8A6;
  --teal-50: #F0FDFA;
  --teal-100: #CCFBF1;
  --slate-50: #F8FAFC;
  --slate-100: #F1F5F9;
  --slate-200: #E2E8F0;
  --slate-300: #CBD5E1;
  --slate-400: #94A3B8;
  --slate-500: #64748B;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1E293B;
  --slate-900: #0F172A;
  --white: #FFFFFF;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Playfair Display', Georgia, serif;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(15,23,42,0.08);
  --shadow-md: 0 4px 20px rgba(15,23,42,0.1);
  --shadow-lg: 0 10px 40px rgba(15,23,42,0.12);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-body);
  color: var(--slate-800);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* HEADER */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--slate-200);
  transition: var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--slate-900);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.logo--light {
  color: var(--white);
}

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

.logo--light .logo-icon {
  color: var(--teal-light);
}

.nav ul {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav a {
  text-decoration: none;
  color: var(--slate-600);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav a:hover {
  color: var(--teal);
  background: var(--teal-50);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-family: var(--font-body);
}

.btn--primary {
  background: var(--teal);
  color: var(--white);
}

.btn--primary:hover {
  background: var(--teal-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(13,148,136,0.35);
}

.btn--nav {
  background: var(--slate-900);
  color: var(--white);
  padding: 10px 20px;
}

.btn--nav:hover {
  background: var(--slate-700);
  color: var(--white);
}

.btn--outline {
  border: 2px solid rgba(255,255,255,0.5);
  color: var(--white);
  background: transparent;
}

.btn--outline:hover {
  border-color: var(--white);
  background: rgba(255,255,255,0.1);
}

.btn--light {
  background: var(--white);
  color: var(--teal-dark);
}

.btn--light:hover {
  background: var(--teal-50);
  transform: translateY(-1px);
}

.btn--outline-light {
  border: 2px solid rgba(255,255,255,0.4);
  color: var(--white);
  background: transparent;
}

.btn--outline-light:hover {
  border-color: var(--white);
  background: rgba(255,255,255,0.1);
}

.btn--full {
  width: 100%;
  justify-content: center;
  padding: 14px 24px;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--slate-700);
  border-radius: 2px;
  transition: var(--transition);
}

/* MOBILE NAV */
.mobile-nav {
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: var(--white);
  border-bottom: 1px solid var(--slate-200);
  box-shadow: var(--shadow-lg);
  z-index: 999;
  transform: translateY(-120%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-nav.active {
  transform: translateY(0);
}

.mobile-nav-inner {
  display: flex;
  flex-direction: column;
  padding: 16px 24px 24px;
  gap: 4px;
}

.mobile-nav a {
  text-decoration: none;
  color: var(--slate-700);
  font-size: 1rem;
  font-weight: 500;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.mobile-nav a:hover {
  color: var(--teal);
  background: var(--teal-50);
}

.btn--mobile {
  margin-top: 8px;
  justify-content: center;
}

/* HERO */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 72px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,23,42,0.82) 0%, rgba(15,23,42,0.55) 50%, rgba(13,148,136,0.3) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 80px 24px;
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--white);
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 28px;
  backdrop-filter: blur(8px);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.2rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.text-teal {
  color: var(--teal-light);
}

.hero-sub {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.8);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 56px;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.85);
  font-size: 0.9rem;
  font-weight: 500;
}

.trust-item svg {
  color: var(--teal-light);
}

/* SECTION COMMON */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--teal);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-label::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--teal);
  border-radius: 2px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--slate-900);
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--slate-500);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 48px;
}

/* SERVICES */
.services {
  padding: 100px 0;
  background: var(--slate-50);
}

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

.service-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  border: 1px solid var(--slate-200);
  transition: var(--transition);
}

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

.service-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--teal-50);
  border-radius: var(--radius-sm);
  color: var(--teal);
  margin-bottom: 20px;
  transition: var(--transition);
}

.service-card:hover .service-icon {
  background: var(--teal);
  color: var(--white);
}

.service-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 10px;
}

.service-card p {
  font-size: 0.95rem;
  color: var(--slate-500);
  line-height: 1.65;
}

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

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

.about-image {
  position: relative;
}

.about-image img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.about-stat {
  position: absolute;
  bottom: -24px;
  right: -24px;
  background: var(--teal);
  color: var(--white);
  padding: 24px 32px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.85rem;
  opacity: 0.9;
  line-height: 1.4;
}

.about-content .section-desc {
  margin-bottom: 28px;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 36px;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--slate-700);
  font-weight: 500;
}

.feature-item svg {
  color: var(--teal);
  flex-shrink: 0;
  margin-top: 2px;
}

/* PROJECTS */
.projects {
  padding: 100px 0;
  background: var(--slate-50);
}

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

.project-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 4/3;
}

.project-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-card:hover img {
  transform: scale(1.08);
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15,23,42,0.9) 0%, rgba(15,23,42,0.3) 50%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px;
  transition: var(--transition);
}

.project-tag {
  display: inline-block;
  background: var(--teal);
  color: var(--white);
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
  width: fit-content;
}

.project-overlay h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}

.project-overlay p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.75);
  line-height: 1.6;
}

/* TESTIMONIALS */
.testimonials {
  padding: 100px 0;
  background: var(--white);
}

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

.testimonial-card {
  background: var(--slate-50);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  border: 1px solid var(--slate-200);
  transition: var(--transition);
}

.testimonial-card:hover {
  border-color: var(--teal-100);
  box-shadow: var(--shadow-md);
}

.testimonial-stars {
  display: flex;
  gap: 4px;
  color: #FBBF24;
  margin-bottom: 20px;
}

.testimonial-text {
  font-size: 1rem;
  color: var(--slate-700);
  line-height: 1.7;
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.author-name {
  font-weight: 700;
  color: var(--slate-900);
  font-size: 0.95rem;
}

.author-detail {
  font-size: 0.85rem;
  color: var(--slate-400);
}

/* CTA */
.cta {
  padding: 80px 0;
  background: var(--slate-900);
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.cta-content {
  flex: 1;
  min-width: 280px;
}

.cta-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.cta-text {
  font-size: 1.05rem;
  color: var(--slate-400);
  line-height: 1.7;
}

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

/* CONTACT */
.contact {
  padding: 100px 0;
  background: var(--slate-50);
}

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

.contact-desc {
  font-size: 1.05rem;
  color: var(--slate-500);
  line-height: 1.7;
  margin-bottom: 36px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 32px;
}

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

.contact-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--teal-50);
  border-radius: var(--radius-sm);
  color: var(--teal);
  flex-shrink: 0;
}

.contact-item strong {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--slate-500);
  margin-bottom: 4px;
  font-weight: 600;
}

.contact-item span {
  color: var(--slate-800);
  font-size: 0.95rem;
  line-height: 1.5;
}

.contact-map {
  overflow: hidden;
}

.contact-form-wrap {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid var(--slate-200);
  box-shadow: var(--shadow-md);
}

.contact-form h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 6px;
}

.form-note {
  font-size: 0.85rem;
  color: var(--slate-400);
  margin-bottom: 28px;
}

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

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

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--slate-700);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--slate-200);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: var(--font-body);
  color: var(--slate-800);
  transition: var(--transition);
  background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(13,148,136,0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--slate-400);
}

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

.form-success {
  display: none;
  text-align: center;
  padding: 40px 20px;
  color: var(--teal-dark);
}

.form-success.show {
  display: block;
}

.form-success svg {
  color: var(--teal);
  margin-bottom: 16px;
}

.form-success p {
  font-size: 1rem;
  color: var(--slate-700);
  line-height: 1.6;
}

/* FOOTER */
.footer {
  background: var(--slate-900);
  color: var(--slate-400);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand p {
  margin-top: 16px;
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 280px;
}

.footer-col h4 {
  color: var(--white);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 20px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  color: var(--slate-400);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--teal-light);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding: 24px 0;
  font-size: 0.85rem;
}

/* ANIMATIONS */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

  .about-grid {
    gap: 40px;
  }
}

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

  .menu-toggle {
    display: flex;
  }

  .hero-content {
    padding: 60px 24px;
  }

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

  .hero-actions .btn {
    justify-content: center;
  }

  .hero-trust {
    gap: 20px;
  }

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

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

  .about-image {
    order: -1;
  }

  .about-image img {
    height: 350px;
  }

  .about-stat {
    right: 16px;
    bottom: -16px;
  }

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

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

  .contact-form-wrap {
    padding: 28px;
  }

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

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

  .cta-actions {
    justify-content: center;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

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

  .section-title {
    font-size: 1.8rem;
  }

  .service-card {
    padding: 28px 24px;
  }
}