/* ===== Self-hosted Inter font ===== */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/Inter-Regular.woff2') format('woff2');
}

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/Inter-Medium.woff2') format('woff2');
}

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('fonts/Inter-SemiBold.woff2') format('woff2');
}

@font-face {
  font-family: 'Inter';
  font-style: italic;
  font-weight: 600;
  font-display: swap;
  src: url('fonts/Inter-SemiBoldItalic.woff2') format('woff2');
}

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('fonts/Inter-Bold.woff2') format('woff2');
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    Helvetica, Arial, sans-serif;
  color: #131314;
  background: #ffffff;
  font-size: 1.125rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

strong {
  font-weight: 700;
}

/* ===== Container ===== */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ===== Nav ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: #666;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: #131314;
}

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 0 6rem;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw + 1rem, 5rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  max-width: 900px;
}

.hero-title strong {
  font-style: italic;
}

.hero-sub {
  margin-top: 2rem;
  font-size: clamp(1.125rem, 1.5vw + 0.5rem, 1.375rem);
  color: #666;
  max-width: 600px;
  line-height: 1.6;
}

/* ===== Section shared ===== */
.section-label {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #999;
  margin-bottom: 3rem;
}

/* ===== Services ===== */
.services {
  padding: 5rem 0 8rem;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem 4rem;
}

.service-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.service-card p {
  color: #666;
  font-size: 1rem;
  line-height: 1.65;
}

/* ===== About ===== */
.about {
  padding: 8rem 0;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.about-text {
  font-size: clamp(1.25rem, 2vw + 0.5rem, 1.75rem);
  line-height: 1.6;
  max-width: 780px;
  color: #333;
}

/* ===== Footer ===== */
.footer {
  padding: 4rem 0;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 1.5rem 3rem;
}

.footer-brand {
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.footer-contact a {
  font-size: 0.9375rem;
  color: #666;
  transition: color 0.2s;
}

.footer-contact a:hover {
  color: #131314;
}

.footer-copy {
  font-size: 0.8125rem;
  color: #999;
  margin-left: auto;
}

/* ===== Fade-in animation ===== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .hero {
    min-height: 85vh;
    padding: 7rem 0 4rem;
  }

  .services {
    padding: 5rem 0;
  }

  .services-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .about {
    padding: 5rem 0;
  }

  .footer-inner {
    flex-direction: column;
    gap: 1rem;
  }

  .footer-copy {
    margin-left: 0;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1.25rem;
  }

  .nav-inner {
    padding: 0 1.25rem;
  }

  .nav-links {
    gap: 1.25rem;
  }

  .nav-links a {
    font-size: 0.8125rem;
  }
}