:root {
  /* Color Palette */
  --color-primary: #1E1E1E;      /* Charcoal Black */
  --color-secondary: #2C3E50;    /* Deep Slate Blue */
  --color-accent: #1B3A34;       /* Dark Forest Green */
  --color-neutral: #2F4F4F;      /* Gunmetal Gray */
  --color-dark: #4A1F2F;         /* Dark Burgundy */
  --color-light: #F5F5F5;        /* Light Gray for backgrounds */
  --color-white: #FFFFFF;        /* White */
  
  /* Typography */
  --font-primary: 'Montserrat', sans-serif;
  --font-secondary: 'Playfair Display', serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-xxl: 3rem;
  
  /* Borders & Radiuses */
  --border-thin: 1px solid var(--color-neutral);
  --border-thick: 2px solid var(--color-primary);
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-circle: 50%;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Container widths */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  color: var(--color-primary);
  background-color: var(--color-light);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.2;
  color: var(--color-primary);
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.75rem;
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1rem;
}

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

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

a:hover, a:focus {
  color: var(--color-secondary);
}

ul, ol {
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
}

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

/* Container */
.container {
  width: 100%;
  max-width: var(--container-lg);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Section styles */
.section {
  padding: var(--space-xl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-xl);
  position: relative;
}

.section-title:after {
  content: '';
  display: block;
  width: 50px;
  height: 3px;
  background-color: var(--color-accent);
  margin: var(--space-sm) auto 0;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  background-color: var(--color-accent);
  color: var(--color-light);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-weight: 600;
  text-align: center;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.btn:hover, .btn:focus {
  background-color: var(--color-secondary);
  color: var(--color-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}

.btn-secondary:hover, .btn-secondary:focus {
  background-color: var(--color-accent);
  color: var(--color-light);
}

.btn-large {
  padding: var(--space-md) var(--space-xl);
  font-size: 1.1rem;
}

/* Header and Navigation */
.header {
  position: relative;
  padding: var(--space-md) 0;
  background-color: var(--color-light);
  transition: all var(--transition-normal);
  z-index: 100;
}

.header-compact {
  transform: translateY(-100%);
}

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

.logo {
  font-family: var(--font-secondary);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.logo-link {
  color: var(--color-primary);
  text-decoration: none;
}

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

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

.nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  margin-left: var(--space-lg);
}

.nav-link {
  color: var(--color-primary);
  font-weight: 500;
  text-decoration: none;
  position: relative;
  padding: var(--space-xs) 0;
}

.nav-link:before {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 0;
  background-color: var(--color-accent);
  transition: width var(--transition-normal);
}

.nav-link:hover:before, 
.nav-link:focus:before,
.nav-link.active:before {
  width: 100%;
}

/* Hero Section */
.hero {
  height: 80vh;
  min-height: 500px;
  position: relative;
  display: flex;
  align-items: center;
  background-color: var(--color-primary);
  background-size: cover;
  background-position: center;
  color: var(--color-light);
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}

.hero-title {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  color: var(--color-light);
}

.hero-subtitle {
  font-size: 1.5rem;
  margin-bottom: var(--space-xl);
  color: var(--color-light);
}

/* Grid system */
.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-md);
}

/* Card styles */
.card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-content {
  padding: var(--space-lg);
}

.card-title {
  margin-bottom: var(--space-sm);
  font-size: 1.25rem;
}

.card-price {
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
  font-size: 1.1rem;
}

.card-text {
  margin-bottom: var(--space-lg);
}

/* Course grid */
.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-lg);
}

/* Features section */
.features {
  background-color: var(--color-light);
}

.feature-item {
  text-align: center;
  padding: var(--space-lg);
}

.feature-icon {
  font-size: 2.5rem;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.feature-title {
  margin-bottom: var(--space-sm);
}

/* Testimonials section */
.testimonial {
  text-align: center;
  padding: var(--space-lg);
}

.testimonial-text {
  font-style: italic;
  font-size: 1.1rem;
  margin-bottom: var(--space-md);
}

.testimonial-author {
  font-weight: 700;
}

/* Contact Form */
.contact-form {
  background-color: var(--color-white);
  padding: var(--space-xl);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

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

.form-label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 500;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-sm);
  border: 1px solid var(--color-neutral);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
  transition: border var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.form-checkbox input {
  margin-top: 0.25rem;
}

/* Footer */
.footer {
  background-color: var(--color-secondary);
  color: var(--color-light);
  padding: var(--space-lg) 0;
}

.footer-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
}

.footer-logo {
  color: var(--color-light);
  font-family: var(--font-secondary);
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
}

.footer-contact {
  margin-bottom: var(--space-md);
}

.footer-contact-item {
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.footer-contact-icon {
  color: var(--color-light);
  font-size: 1.1rem;
}

.footer-menu {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-menu-item {
  margin-bottom: var(--space-sm);
}

.footer-menu-link {
  color: var(--color-light);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.footer-menu-link:hover {
  opacity: 0.8;
  color: var(--color-light);
}

.footer-bottom {
  margin-top: var(--space-xl);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.footer-copyright {
  font-size: 0.9rem;
}

/* Cookies notice */
.cookies-notice {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-secondary);
  color: var(--color-light);
  padding: var(--space-lg);
  z-index: 1000;
  display: none;
}

.cookies-notice.active {
  display: block;
}

.cookies-notice-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-lg);
}

.cookies-buttons {
  display: flex;
  gap: var(--space-sm);
}

/* Map container */
.map-container {
  height: 400px;
  margin-bottom: var(--space-lg);
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: none;
  border-radius: var(--radius-md);
}

/* Thank you page */
.thank-you {
  text-align: center;
  padding: var(--space-xxl) 0;
}

.thank-you-icon {
  font-size: 4rem;
  color: var(--color-accent);
  margin-bottom: var(--space-lg);
}

/* 404 page */
.error-page {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.error-code {
  font-size: 8rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.error-title {
  margin-bottom: var(--space-lg);
}

/* Responsiveness */
@media (max-width: 1024px) {
  html {
    font-size: 15px;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.3rem;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  .nav-toggle {
    display: block;
  }
  
  .nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--color-light);
    flex-direction: column;
    justify-content: center;
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
    z-index: 200;
  }
  
  .nav.active {
    transform: translateX(0);
  }
  
  .nav-list {
    flex-direction: column;
    align-items: center;
  }
  
  .nav-item {
    margin: var(--space-md) 0;
  }
  
  .hero-title {
    font-size: 2.2rem;
  }
  
  .hero-subtitle {
    font-size: 1.2rem;
  }
  
  .section {
    padding: var(--space-lg) 0;
  }
  
  .footer-container {
    grid-template-columns: 1fr;
  }
  
  .cookies-notice-container {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 576px) {
  html {
    font-size: 13px;
  }
  .grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
  }
  .hero {
    min-height: 400px;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
  
  .btn {
    padding: var(--space-xs) var(--space-md);
  }
  
  .card-img {
    height: 180px;
  }
  
  .footer-bottom {
    margin-top: var(--space-lg);
  }
}

@media (max-width: 320px) {
  html {
    font-size: 12px;
  }
  .grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
  }
  .container {
    padding: 0 var(--space-sm);
  }
  
  .logo {
    font-size: 1.3rem;
  }
  
  .hero-title {
    font-size: 1.8rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .section-title {
    font-size: 1.8rem;
  }
}