:root {
  --black: #000000;
  --white: #ffffff;
  --silver: #c0c0c0;
  --charcoal: #1a1a1a;
  --graphite: #333333;
  --body-font: "Montserrat", "Inter", "Open Sans", system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  --max-width: 1200px;
  --transition: 220ms ease;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--body-font);
  background: var(--black);
  color: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

main {
  overflow: hidden;
}

section {
  padding: 5rem 5vw;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  font-size: clamp(2rem, 3vw, 2.75rem);
  margin: 0.5rem 0 0;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.75rem;
  color: var(--silver);
}

/* Accessibility */
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  position: static;
  width: auto;
  height: auto;
  padding: 1rem;
  background: var(--white);
  color: var(--black);
  z-index: 999;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 5vw;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(16px);
  z-index: 10;
  border-bottom: 1px solid rgba(192, 192, 192, 0.15);
}

.logo-group {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.logo {
  width: 52px;
  height: 52px;
  object-fit: contain;
}

.logo-title {
  display: block;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.logo-subtitle {
  font-size: 0.85rem;
  color: var(--silver);
  letter-spacing: 0.35em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.main-nav a {
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  transition: color var(--transition);
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--silver);
}

.btn {
  padding: 0.85rem 1.75rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

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

.btn-primary:hover,
.btn-primary:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(255, 255, 255, 0.15);
}

.btn-secondary {
  border-color: var(--silver);
  color: var(--white);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  color: var(--black);
  background: var(--silver);
}

.btn-tertiary {
  border-color: rgba(255, 255, 255, 0.35);
  color: var(--white);
  background: transparent;
}

.btn-tertiary:hover,
.btn-tertiary:focus-visible {
  border-color: var(--white);
  color: var(--black);
  background: var(--white);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  width: 44px;
  height: 44px;
  justify-content: center;
  align-items: center;
  cursor: pointer;
}

.nav-toggle span {
  width: 100%;
  height: 2px;
  background: var(--white);
  transition: transform var(--transition), opacity var(--transition);
}

/* Hero */
.hero {
  position: relative;
  min-height: 90vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 8rem 5vw;
  background-image: linear-gradient(
      120deg,
      rgba(0, 0, 0, 0.85),
      rgba(0, 0, 0, 0.6)
    ),
    url("https://images.unsplash.com/photo-1579758629938-03607ccdbaba?auto=format&fit=crop&w=1600&q=80");
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid rgba(192, 192, 192, 0.15);
}

.hero-content {
  max-width: 640px;
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: clamp(2.75rem, 5vw, 4.5rem);
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.subtitle {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.1rem;
}

.hero-cta {
  margin-top: 2rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

/* Services */
.services {
  background: var(--charcoal);
}

.service-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.service-card {
  padding: 2rem;
  border-radius: 1.5rem;
  background: linear-gradient(145deg, #0d0d0d, #1d1d1d);
  border: 1px solid rgba(192, 192, 192, 0.1);
  box-shadow: 0 20px 35px rgba(0, 0, 0, 0.45);
  transition: transform var(--transition), border-color var(--transition);
}

.service-card:hover,
.service-card:focus-within {
  transform: translateY(-8px);
  border-color: rgba(192, 192, 192, 0.4);
}

.service-card h3 {
  margin: 1.2rem 0 0.5rem;
  font-size: 1.3rem;
  letter-spacing: 0.04em;
}

.icon {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.06);
  display: grid;
  place-items: center;
}

.icon svg {
  width: 36px;
  height: 36px;
  fill: var(--silver);
  stroke: var(--silver);
}

/* About */
.about {
  background: var(--black);
}

.about-content {
  max-width: 840px;
  margin: 0 auto;
  display: grid;
  gap: 1.5rem;
}

/* Testimonials */
.testimonials {
  background: var(--charcoal);
}

.testimonial-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.testimonial-grid figure {
  margin: 0;
  padding: 2rem;
  border-radius: 1.5rem;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(192, 192, 192, 0.15);
}

blockquote {
  margin: 0 0 1rem;
  font-size: 1.05rem;
  font-weight: 500;
}

figcaption {
  color: var(--silver);
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* Contact */
.contact {
  background: var(--black);
}

.contact-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  gap: 3rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.contact-form {
  display: grid;
  gap: 1.25rem;
}

.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.9rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.contact-form input,
.contact-form textarea {
  border: 1px solid rgba(192, 192, 192, 0.3);
  background: rgba(255, 255, 255, 0.02);
  color: var(--white);
  padding: 0.85rem 1rem;
  border-radius: 0.75rem;
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition), background var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--silver);
  background: rgba(255, 255, 255, 0.08);
}

.contact-info h3 {
  text-transform: uppercase;
  letter-spacing: 0.25em;
  font-size: 0.85rem;
  color: var(--silver);
}

.contact-info p,
.contact-info a {
  margin: 0.35rem 0;
  color: rgba(255, 255, 255, 0.9);
}

.hours {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.6rem;
}

.hours li {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid rgba(192, 192, 192, 0.1);
  padding-bottom: 0.4rem;
}

.social-link {
  margin-top: 0.6rem;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.4rem;
  border-radius: 999px;
  border: 1px solid rgba(192, 192, 192, 0.25);
  transition: border-color var(--transition);
}

.social-link:hover,
.social-link:focus-visible {
  border-color: var(--silver);
}

.social-link svg {
  width: 22px;
  height: 22px;
  fill: var(--silver);
}

/* Footer */
.site-footer {
  padding: 2.5rem 5vw;
  background: var(--graphite);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(192, 192, 192, 0.25);
}

.privacy-link {
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* Responsive */
@media (max-width: 900px) {
  .main-nav {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    transform: translateX(100%);
    transition: transform var(--transition);
  }

  .main-nav.is-open {
    transform: translateX(0);
  }

  .main-nav .btn {
    font-size: 0.85rem;
  }

  .nav-toggle {
    display: flex;
  }
}

@media (max-width: 640px) {
  section {
    padding: 4rem 1.5rem;
  }

  .hero {
    padding: 6rem 1.5rem;
  }

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

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