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

:root {
  --color-dark: #1a1a2e;
  --color-blue: #0077cc;
  --color-blue-hover: #005fa3;
  --color-white: #ffffff;
  --color-light-gray: #f5f5f5;
  --color-text: #333333;
  --color-muted: #666666;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 70px;
}

body {
  font-family: var(--font-family);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-white);
}

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

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

a:hover {
  color: var(--color-blue-hover);
}

h1, h2, h3 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-dark);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.25rem; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.btn {
  display: inline-block;
  padding: 14px 28px;
  background: var(--color-blue);
  color: var(--color-white);
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: 600;
  border-radius: 6px;
  text-decoration: none;
  transition: background 0.2s;
}

.btn:hover {
  background: var(--color-blue-hover);
  color: var(--color-white);
}

/* ---- Header ---- */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-dark);
  padding: 0 20px;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-white);
  text-decoration: none;
  font-size: 1.25rem;
  font-weight: 700;
}

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

.logo svg {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.85);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: color 0.2s;
}

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

.nav-links .btn {
  padding: 10px 20px;
  font-size: 0.9rem;
}

.nav-toggle {
  display: none;
}

.nav-toggle-label {
  display: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle-label span,
.nav-toggle-label span::before,
.nav-toggle-label span::after {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  position: relative;
  transition: transform 0.3s;
}

.nav-toggle-label span::before,
.nav-toggle-label span::after {
  content: '';
  position: absolute;
}

.nav-toggle-label span::before { top: -7px; }
.nav-toggle-label span::after { top: 7px; }

.nav-toggle:checked ~ .nav-toggle-label span {
  background: transparent;
}

.nav-toggle:checked ~ .nav-toggle-label span::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle:checked ~ .nav-toggle-label span::after {
  top: 0;
  transform: rotate(-45deg);
}

/* ---- Hero ---- */

.hero {
  position: relative;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: url('images/hero.jpg') center/cover no-repeat;
  color: var(--color-white);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
}

.hero .container {
  position: relative;
  z-index: 1;
  padding: 80px 20px;
}

.hero h1 {
  color: var(--color-white);
  margin-bottom: 16px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero p {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 32px;
  max-width: 550px;
  margin-left: auto;
  margin-right: auto;
}

/* ---- Services ---- */

.services {
  padding: 80px 0;
  background: var(--color-white);
}

.services h2 {
  text-align: center;
  margin-bottom: 48px;
}

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

.service-card {
  padding: 28px 24px;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  transition: box-shadow 0.2s;
}

.service-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.service-card svg {
  width: 40px;
  height: 40px;
  margin-bottom: 12px;
  color: var(--color-blue);
}

.service-card h3 {
  margin-bottom: 8px;
}

.service-card p {
  color: var(--color-muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* ---- About ---- */

.about {
  padding: 80px 0;
  background: var(--color-light-gray);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about h2 {
  margin-bottom: 20px;
}

.about h3 {
  margin-top: 28px;
  margin-bottom: 12px;
  font-size: 1.3rem;
}

.about p {
  margin-bottom: 12px;
  color: var(--color-text);
}

.about-image {
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

/* ---- Contact / Footer ---- */

.contact {
  padding: 80px 0 40px;
  background: var(--color-dark);
  color: var(--color-white);
  text-align: center;
}

.contact h2 {
  color: var(--color-white);
  margin-bottom: 8px;
}

.phone-number {
  display: inline-block;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-white);
  text-decoration: none;
  margin: 16px 0;
  transition: color 0.2s;
}

.phone-number:hover {
  color: var(--color-blue);
}

.contact .subtitle {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 8px;
}

.contact .business-info {
  color: rgba(255, 255, 255, 0.5);
  margin-top: 4px;
}

.footer {
  margin-top: 60px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.85rem;
}

/* ---- Responsive: Tablet (768px and below) ---- */

@media (max-width: 768px) {
  .nav-toggle-label {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--color-dark);
    flex-direction: column;
    padding: 16px 20px 24px;
    gap: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

  .nav-toggle:checked ~ .nav-links {
    display: flex;
  }

  .nav-links .btn {
    text-align: center;
    width: 100%;
  }

  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }

  .hero { min-height: 50vh; }

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

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

  .about-image {
    order: -1;
    max-height: 350px;
    object-fit: cover;
    width: 100%;
  }

  .phone-number {
    font-size: 2rem;
  }
}

/* ---- Responsive: Mobile (480px and below) ---- */

@media (max-width: 480px) {
  h1 { font-size: 1.6rem; }
  h2 { font-size: 1.35rem; }

  .hero .container { padding: 60px 16px; }
  .hero p { font-size: 1rem; }

  .services { padding: 60px 0; }
  .about { padding: 60px 0; }
  .contact { padding: 60px 0 32px; }

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

  .service-card {
    padding: 20px 18px;
  }

  .phone-number {
    font-size: 1.6rem;
  }

  .btn {
    padding: 12px 24px;
    width: 100%;
    text-align: center;
  }
}