:root {
  --orange: #FF8C00;
  --dark: #1a1a1a;
  --text: #333;
  --light: #f7f7f7;
  --border: #e5e5e5;
}

/* ============ RESET ============ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.6;
}

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

/* ============ HEADER / NAV ============ */
header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 0;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--dark);
}

.logo span {
  color: var(--orange);
}

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 15px;
}

.nav-links a {
  text-decoration: none;
  font-weight: 600;
  color: var(--text);
}

.nav-btn {
  background: var(--orange);
  color: #fff !important;
  padding: 8px 16px;
  border-radius: 5px;
}

.nav-btn-outline {
  border: 1px solid var(--orange);
  color: var(--orange) !important;
  padding: 7px 15px;
  border-radius: 5px;
}

/* ============ HERO ============ */
.hero {
  height: 75vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: 15px;
}

.hero p {
  font-size: 18px;
}

.hero-btns {
  margin-top: 25px;
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

.orange {
  color: var(--orange);
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-block;
  padding: 12px 30px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 700;
  transition: 0.3s;
  cursor: pointer;
  text-align: center;
}

.btn-orange {
  background: var(--orange);
  color: #fff;
}

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

/* ============ SECTIONS ============ */
.section-title {
  text-align: center;
  font-size: 32px;
  margin-bottom: 50px;
  font-weight: 700;
}

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

/* ============ GRID ============ */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

/* ============ CARDS ============ */
.service-card,
.project-card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0,0,0,0.06);
}

.service-card {
  padding: 35px 25px;
  text-align: center;
  border-top: 4px solid var(--orange);
}

.service-card .icon {
  font-size: 38px;
  margin-bottom: 15px;
}

.project-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.p-content {
  padding: 20px;
}

/* ============ TAGS ============ */
.tag {
  font-size: 10px;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 8px;
}

.qgis { background:#fff0e0; color:#ff8c00; }
.rs { background:#e0f0ff; color:#007bff; }
.gee { background:#e0ffe0; color:#28a745; }
.design { background:#ffe0f0; color:#d63384; }
.survey { background:#f0e0ff; color:#6f42c1; }

/* ============ ORDER FORM ============ */
.order-form {
  max-width: 600px;
  margin: auto;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px;
  font-size: 15px;
  border: 1px solid var(--border);
  border-radius: 6px;
}

.form-group textarea {
  resize: vertical;
}

.order-btn {
  width: 100%;
  margin-top: 10px;
}

/* ============ FOOTER ============ */
footer {
  border-top: 1px solid var(--border);
  background: #fff;
}

footer p {
  opacity: 0.7;
}

/* ============ MOBILE ============ */
@media (max-width: 768px) {
  .hero {
    height: auto;
    padding: 100px 0;
  }

  .hero h1 {
    font-size: 32px;
  }

  .section-title {
    font-size: 26px;
  }

  .btn {
    width: 100%;
  }

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

@media (max-width: 480px) {
  .logo {
    font-size: 20px;
  }

  .hero h1 {
    font-size: 26px;
  }

  .container {
    padding: 0 15px;
  }
}