/* ==========================================================================
   CSS Variables & Theming
   ========================================================================== */
:root {
  /* Brand Colors */
  --primary-color: #166534; /* Dark Blue/Slate */
  --primary-light: #334155;
  --accent-color: #BE123C;  /* Bright Blue */
  --accent-hover: #292524;
  --whatsapp-green: #25d366;
  --whatsapp-hover: #128c7e;

  /* Typography */
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --text-dark: #1e293b;
  --text-muted: #64748b;
  --text-light: #f8fafc;
  
  /* Layout & Backgrounds */
  --bg-color: white;
  --bg-alt: #f1f5f9;
  --container-width: 1200px;
  --border-radius: 8px;
  --transition: all 0.3s ease;
  --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  color: var(--text-dark);
  background-color: var(--bg-color);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

.container {
  width: 90%;
  max-width: var(--container-width);
  margin: 0 auto;
}

/* Typography */
h1, h2, h3, h4 {
  color: var(--primary-color);
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; text-align: center; margin-bottom: 2rem; }
h3 { font-size: 1.5rem; }

section {
  padding: 5rem 0;
}

.section-bg-alt {
  background-color: var(--bg-alt);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

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

.btn-primary:hover {
  background-color: var(--accent-hover);
  color: #fff;
}

.btn-whatsapp {
  background-color: var(--whatsapp-green);
  color: #fff;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  justify-content: center;
}

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

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
header {
  background-color: var(--bg-color);
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  transition: var(--transition);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}
.logo img {
  max-height: 80px; /* Keeps the logo cleanly inside the 80px navbar */
  width: auto;      /* Maintains the correct proportions */
  display: block;
}

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

.nav-links a {
  color: var(--text-dark);
  font-weight: 500;
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--primary-color);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  padding-top: 120px; /* Offset for sticky header */
  padding-bottom: 6rem;
  background: linear-gradient(rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.8)), url('../images/hero.jpg') center/cover;
  color: var(--text-light);
  text-align: center;
  min-height: 80vh;
  display: flex;
  align-items: center;
}

.hero h1 {
  color: var(--text-light);
  font-size: 3rem;
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-btns {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ==========================================================================
   Grids (Services, Gallery, Features)
   ========================================================================== */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--bg-color);
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  text-align: center;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.card-icon {
  font-size: 2.5rem;
  color: var(--accent-color);
  margin-bottom: 1rem;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1rem;
}

.gallery-item {
  border-radius: var(--border-radius);
  overflow: hidden;
  aspect-ratio: 1 / 1;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.gallery-item:hover img {
  transform: scale(1.05);
}

/* ==========================================================================
   Contact & Footer
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.contact-info {
  background: var(--bg-alt);
  padding: 2rem;
  border-radius: var(--border-radius);
}

.contact-info p {
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-control {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid #cbd5e1;
  border-radius: var(--border-radius);
  font-family: var(--font-main);
}

footer {
  background-color: var(--primary-color);
  color: var(--text-light);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-col h4 {
  color: var(--text-light);
  margin-bottom: 1.5rem;
}

.footer-col a {
  color: #94a3b8;
  display: block;
  margin-bottom: 0.5rem;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--primary-light);
  color: #94a3b8;
  font-size: 0.9rem;
}

/* ==========================================================================
   Media Queries (Mobile First approach naturally scales up, adjusting down here)
   ========================================================================== */
@media (max-width: 768px) {
  .mobile-menu-btn {
    display: block;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background-color: var(--bg-color);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    padding: 1rem 0;
    text-align: center;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links a {
    padding: 1rem;
    display: block;
  }

  .hero h1 { font-size: 2rem; }
  .contact-grid { grid-template-columns: 1fr; }
  
  .btn { width: 100%; margin-bottom: 0.5rem; } /* Large mobile buttons */
}