/* Base Styles and Variables */
:root {
  /* Color System */
  --color-primary-900: #0e1f16;
  --color-primary-800: #132c20;
  --color-primary-700: #1a3a2a;
  --color-primary-600: #224d38;
  --color-primary-500: #2a6046;
  --color-primary-400: #347357;
  --color-primary-300: #429870;
  --color-primary-200: #70c49a;
  --color-primary-100: #a8e0c4;
  --color-primary-50: #dcf5e9;
  
  --color-accent-500: #e9b949;
  --color-accent-300: #f1d18a;
  
  --color-neutral-900: #1a1a1a;
  --color-neutral-800: #333333;
  --color-neutral-700: #4d4d4d;
  --color-neutral-600: #666666;
  --color-neutral-500: #808080;
  --color-neutral-400: #999999;
  --color-neutral-300: #b3b3b3;
  --color-neutral-200: #cccccc;
  --color-neutral-100: #e6e6e6;
  --color-neutral-50: #f2f2f2;
  
  --color-success: #2a9d8f;
  --color-warning: #e9c46a;
  --color-error: #e76f51;
  
  /* Typography */
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --line-height-body: 1.5;
  --line-height-heading: 1.2;
  
  /* Spacing (8px system) */
  --space-1: 0.5rem;   /* 8px */
  --space-2: 1rem;     /* 16px */
  --space-3: 1.5rem;   /* 24px */
  --space-4: 2rem;     /* 32px */
  --space-5: 2.5rem;   /* 40px */
  --space-6: 3rem;     /* 48px */
  
  /* Other */
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  line-height: var(--line-height-body);
  color: var(--color-neutral-100);
  background-color: var(--color-primary-800);
  font-size: 16px;
}

h1, h2, h3, h4, h5, h6 {
  line-height: var(--line-height-heading);
  margin-bottom: var(--space-2);
  font-weight: 700;
  color: var(--color-neutral-50);
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
  margin-bottom: var(--space-3);
}

h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-2);
}

p {
  margin-bottom: var(--space-2);
}

a {
  color: var(--color-primary-200);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--color-accent-300);
}

ul {
  list-style: none;
}

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

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-2);
}

section {
  padding: var(--space-5) 0;
}

/* Header & Navigation */
header {
  background-color: var(--color-primary-900);
  position: fixed;
  width: 100%;
  top: 0;
  left: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  transition: var(--transition);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) var(--space-2);
}

.logo h1 {
  font-size: 1.5rem;
  margin: 0;
  letter-spacing: 1px;
  color: var(--color-primary-200);
}

nav ul {
  display: flex;
  gap: var(--space-3);
}

nav a {
  font-weight: 500;
  padding: var(--space-1);
  position: relative;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent-500);
  transition: var(--transition);
}

nav a:hover::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--color-neutral-100);
  transition: var(--transition);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-color: var(--color-primary-700);
  background-image: linear-gradient(
    to bottom right,
    var(--color-primary-800),
    var(--color-primary-600)
  );
  padding-top: 80px; /* Account for fixed header */
}

.hero-content {
  max-width: 700px;
}

.hero h2 {
  font-size: 3rem;
  margin-bottom: var(--space-3);
  animation: fadeInUp 1s ease-out;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: var(--space-4);
  color: var(--color-neutral-200);
  animation: fadeInUp 1s ease-out 0.2s backwards;
}

/* About Section */
.about {
  background-color: var(--color-primary-800);
  text-align: center;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.about-card {
  background-color: var(--color-primary-700);
  padding: var(--space-3);
  border-radius: var(--border-radius);
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.about-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-2);
}

/* Services Section */
.services {
  background-color: var(--color-primary-700);
  text-align: center;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.service-card {
  background-color: var(--color-primary-600);
  padding: var(--space-3);
  border-radius: var(--border-radius);
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  height: 100%;
}

.service-card:hover {
  background-color: var(--color-primary-500);
}

/* Contact Section */
.contact {
  background-color: var(--color-primary-800);
  text-align: center;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-4);
  text-align: left;
}

.contact-info {
  background-color: var(--color-primary-700);
  padding: var(--space-3);
  border-radius: var(--border-radius);
}

.social-links {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.social-link {
  padding: var(--space-1) var(--space-2);
  background-color: var(--color-primary-600);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.social-link:hover {
  background-color: var(--color-primary-500);
}

.contact-form {
  background-color: var(--color-primary-700);
  padding: var(--space-3);
  border-radius: var(--border-radius);
}

.form-group {
  margin-bottom: var(--space-2);
}

label {
  display: block;
  margin-bottom: var(--space-1);
  color: var(--color-neutral-200);
}

input,
textarea {
  width: 100%;
  padding: var(--space-1) var(--space-2);
  background-color: var(--color-primary-600);
  border: 1px solid var(--color-primary-500);
  border-radius: var(--border-radius);
  color: var(--color-neutral-100);
  font-family: var(--font-family);
  transition: var(--transition);
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-accent-500);
  background-color: var(--color-primary-500);
}

/* Footer */
footer {
  background-color: var(--color-primary-900);
  padding: var(--space-3) 0;
  text-align: center;
  color: var(--color-neutral-300);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background-color: var(--color-accent-500);
  color: var(--color-neutral-900);
  font-weight: 500;
  border-radius: var(--border-radius);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  font-family: var(--font-family);
  font-size: 1rem;
}

.btn:hover {
  background-color: var(--color-accent-300);
  color: var(--color-neutral-900);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive Styles */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .hero h2 {
    font-size: 2.25rem;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  nav {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--color-primary-900);
    padding: 0;
    height: 0;
    overflow: hidden;
    transition: var(--transition);
  }
  
  nav.active {
    height: auto;
    padding: var(--space-2) 0;
  }
  
  nav ul {
    flex-direction: column;
    gap: var(--space-2);
    padding: 0 var(--space-2);
  }
  
  .menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  
  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
}

@media (max-width: 480px) {
  section {
    padding: var(--space-4) 0;
  }
  
  .hero h2 {
    font-size: 1.75rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .about-grid,
  .services-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }
}