:root {
  --dark-green: #1B4332;
  --secondary-green: #2D5A45;
  --gold: #D4A373;
  --sand: #E9D8A6;
  --dark-gray: #2D3436;
  --medium-gray: #636E72;
  --light-gray: #F7F7F7;
  --white: #ffffff;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 28px;

  --container: 1200px;
}

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

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--light-gray);
  color: var(--dark-gray);
  line-height: 1.6;
}

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

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

main {
  overflow-x: hidden;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: var(--radius-lg);
  font-weight: 600;
  transition: all 0.25s ease;
  cursor: pointer;
}

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

.btn.primary:hover {
  background: #c18f5f;
  transform: translateY(-2px);
}

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

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

/* ---------- Layout ---------- */
.section {
  padding: 80px 24px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: white;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: -1;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.45);
}

.hero-content {
  max-width: 900px;
  padding: 24px;
  z-index: 1;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  margin-bottom: 16px;
}

.hero p {
  font-size: 1.1rem;
  max-width: 700px;
  margin: 0 auto 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Stats ---------- */
.stats {
  background: var(--dark-green);
  color: white;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 32px;
  padding: 64px 24px;
  text-align: center;
}

.stat strong {
  font-size: 3rem;
  color: var(--gold);
  display: block;
}

/* ---------- Grid ---------- */
.grid {
  display: grid;
  gap: 32px;
}

.services-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.projects-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

/* ---------- Cards ---------- */
.card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 24px 50px rgba(0,0,0,0.12);
}

/* ---------- CTA ---------- */
.cta {
  background: var(--dark-green);
  color: white;
  text-align: center;
  padding: 96px 24px;
}

.cta h2 {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

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

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 14px;
  border-radius: var(--radius-sm);
  border: 1px solid #ccc;
  font-size: 1rem;
  margin-bottom: 16px;
}

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

.contact-form button {
  width: 100%;
  background: var(--dark-green);
  color: white;
  border: none;
  padding: 14px;
  border-radius: var(--radius-lg);
  font-size: 1rem;
}

/* ---------- 404 ---------- */
.page-404 {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 48px;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .section {
    padding: 64px 20px;
  }

  .stats {
    gap: 24px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}

.custom-select {
  position: relative;
}

.custom-select select {
  appearance: none;
  width: 100%;
  padding: 14px;
  border-radius: 10px;
  border: 1px solid #ccc;
  background: white;
  font-size: 1rem;
  cursor: pointer;
}

.custom-select::after {
  content: "▾";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  font-size: 1.1rem;
  color: var(--dark-green);
}

.custom-select select:focus {
  outline: none;
  border-color: var(--gold);
}