/* 
   EduCzech - Základní styly
   Vytvořeno: 25.03.2025
*/

/* Reset a základní nastavení */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  :root {
    /* Primární barevná paleta */
    --color-primary: #6a4c93;
    --color-primary-light: #9d81ba;
    --color-primary-dark: #4a2d73;
    
    /* Sekundární barevná paleta */
    --color-secondary: #f2b705;
    --color-secondary-light: #ffce4b;
    --color-secondary-dark: #c79201;
    
    /* Neutrální barvy */
    --color-text: #333333;
    --color-text-light: #666666;
    --color-background: #ffffff;
    --color-background-light: #f9f9f9;
    --color-background-dark: #e9e9e9;
    
    /* Akcentní barvy */
    --color-accent: #ff6b6b;
    --color-success: #4caf50;
    --color-info: #2196f3;
    --color-warning: #ff9800;
    --color-error: #f44336;
    
    /* Stíny */
    --shadow-small: 0 2px 5px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-large: 0 8px 24px rgba(0, 0, 0, 0.2);
    
    /* Přechody */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
    
    /* Typografie */
    --font-family-base: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-family-heading: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.5;
  }
  
  html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
  }
  
  body {
    font-family: var(--font-family-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-background);
    overflow-x: hidden;
  }
  
  a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
  }
  
  a:hover {
    color: var(--color-primary-dark);
  }
  
  h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
    font-weight: 600;
    line-height: 1.2;
  }
  
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  h3 {
    font-size: 1.5rem;
  }
  
  p {
    margin-bottom: var(--spacing-md);
  }
  
  ul, ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
  }
  
  /* Container */
  .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
  }
  
  /* Tlačítka */
  .btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    background-color: var(--color-primary);
    color: white;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    outline: none;
    text-decoration: none;
  }
  
  .btn:hover {
    background-color: var(--color-primary-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
  }
  
  .btn-primary {
    background-color: var(--color-primary);
  }
  
  .btn-secondary {
    background-color: var(--color-secondary);
    color: var(--color-text);
  }
  
  .btn-secondary:hover {
    background-color: var(--color-secondary-dark);
    color: var(--color-text);
  }
  
  /* Header */
  .main-header {
    background-color: var(--color-background);
    box-shadow: var(--shadow-small);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
  }
  
  .main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .logo a {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary);
  }
  
  .main-nav ul {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
  }
  
  .main-nav li {
    margin-left: var(--spacing-lg);
  }
  
  .main-nav a {
    font-weight: 500;
    position: relative;
  }
  
  .main-nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--color-primary);
    transition: width var(--transition-medium);
  }
  
  .main-nav a:hover::after {
    width: 100%;
  }
  
  .menu-toggle {
    display: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--color-primary);
  }
  
  /* Footer */
  .main-footer {
    background-color: var(--color-primary-dark);
    color: var(--color-background);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xl);
  }
  
  .footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
  }
  
  .footer-section {
    flex: 1;
    min-width: 250px;
    margin-bottom: var(--spacing-lg);
  }
  
  .footer-section h3 {
    color: var(--color-background);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  
  .footer-section p {
    margin-bottom: var(--spacing-sm);
  }
  
  .footer-section p i {
    margin-right: var(--spacing-sm);
  }
  
  .footer-links {
    list-style: none;
    padding: 0;
  }
  
  .footer-links li {
    margin-bottom: var(--spacing-sm);
  }
  
  .footer-links a {
    color: var(--color-background-light);
    transition: color var(--transition-fast);
  }
  
  .footer-links a:hover {
    color: var(--color-secondary);
  }
  
  /* Cookie banner */
  .cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-background);
    box-shadow: var(--shadow-medium);
    padding: var(--spacing-md);
    z-index: 1001;
    display: none;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
  }
  
  .cookie-banner.visible {
    display: flex;
  }
  
  .cookie-banner p {
    margin: 0 var(--spacing-md) var(--spacing-sm) 0;
    flex: 1;
  }
  
  .cookie-banner .btn {
    white-space: nowrap;
  }
  
  /* Hero sekce */
  .hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-background);
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-xl);
    text-align: center;
  }
  
  .hero-content {
    max-width: 800px;
    margin: 0 auto;
  }
  
  .hero h1 {
    font-size: 3rem;
    color: var(--color-background);
    margin-bottom: var(--spacing-md);
    animation: fadeInDown 1s ease-out;
  }
  
  .hero p {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 1s ease-out 0.3s;
    animation-fill-mode: both;
  }
  
  .hero .btn {
    animation: fadeInUp 1s ease-out 0.6s;
    animation-fill-mode: both;
  }
  
  /* Features sekce */
  .features {
    padding: var(--spacing-xl) 0;
  }
  
  .section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
  }
  
  .section-title::after {
    content: '';
    position: absolute;
    width: 60px;
    height: 4px;
    background-color: var(--color-primary);
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
  }
  
  .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
  }
  
  .feature-card {
    padding: var(--spacing-lg);
    border-radius: 8px;
    background-color: var(--color-background);
    box-shadow: var(--shadow-small);
    text-align: center;
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
  }
  
  .feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-medium);
  }
  
  .feature-card i {
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
  }
  
  .feature-card h3 {
    margin-bottom: var(--spacing-sm);
  }
  
  /* Kurzy sekce */
  .popular-courses, .courses-list {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-background-light);
  }
  
  .courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
  }
  
  .course-card {
    background-color: var(--color-background);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-small);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
  }
  
  .course-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
  }
  
  .course-info {
    padding: var(--spacing-lg);
  }
  
  .course-info h3 {
    margin-bottom: var(--spacing-sm);
  }
  
  .course-meta {
    display: flex;
    justify-content: space-between;
    margin: var(--spacing-md) 0;
    color: var(--color-text-light);
    font-size: 0.9rem;
  }
  
  .course-meta span i {
    margin-right: var(--spacing-xs);
  }
  
  .course-price {
    font-weight: 700;
    color: var(--color-primary);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
  }
  
  .course-level {
    display: inline-block;
    background-color: var(--color-primary-light);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    margin-bottom: var(--spacing-sm);
  }
  
  .courses-cta {
    text-align: center;
    margin-top: var(--spacing-xl);
  }
  
  /* Testimonials sekce */
  .testimonials {
    padding: var(--spacing-xl) 0;
  }
  
  .testimonials-slider {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: var(--spacing-lg);
    padding: var(--spacing-md) 0;
    scrollbar-width: none;
  }
  
  .testimonials-slider::-webkit-scrollbar {
    display: none;
  }
  
  .testimonial {
    flex: 0 0 auto;
    width: 100%;
    max-width: 500px;
    scroll-snap-align: start;
    padding: var(--spacing-lg);
    background-color: var(--color-background);
    border-radius: 8px;
    box-shadow: var(--shadow-small);
    margin: 0 auto;
  }
  
  .testimonial-content {
    font-style: italic;
    margin-bottom: var(--spacing-md);
    position: relative;
  }
  
  .testimonial-content p {
    margin-bottom: 0;
  }
  
  .testimonial-content::before {
    content: '\201C';
    font-size: 4rem;
    position: absolute;
    left: -20px;
    top: -20px;
    color: var(--color-primary-light);
    opacity: 0.3;
  }
  
  .testimonial-author {
    text-align: right;
    font-weight: 600;
  }
  
  /* Newsletter sekce */
  .newsletter {
    background-color: var(--color-secondary-light);
    padding: var(--spacing-xl) 0;
  }
  
  .newsletter-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
  }
  
  .newsletter-form {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: var(--spacing-lg);
  }
  
  .newsletter-form input {
    flex: 1;
    min-width: 200px;
    padding: 0.75rem;
    border: none;
    border-radius: 4px 0 0 4px;
  }
  
  .newsletter-form button {
    border-radius: 0 4px 4px 0;
  }
  
  /* Page header */
  .page-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-background);
    padding: var(--spacing-xl) 0;
    text-align: center;
    margin-bottom: var(--spacing-xl);
  }
  
  .page-header h1 {
    color: var(--color-background);
    margin-bottom: var(--spacing-sm);
  }
  
  /* Contact page */
  .contact-section {
    padding: var(--spacing-xl) 0;
  }
  
  .contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
  }
  
  .contact-info, .contact-form-container {
    padding: var(--spacing-lg);
    background-color: var(--color-background);
    border-radius: 8px;
    box-shadow: var(--shadow-small);
  }
  
  .contact-details {
    margin: var(--spacing-lg) 0;
  }
  
  .contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
  }
  
  .contact-item i {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-right: var(--spacing-md);
    width: 24px;
    text-align: center;
  }
  
  .contact-time {
    font-size: 0.9rem;
    color: var(--color-text-light);
  }
  
  .contact-map {
    margin-top: var(--spacing-lg);
    border-radius: 8px;
    overflow: hidden;
  }
  
  .contact-form .form-group {
    margin-bottom: var(--spacing-md);
  }
  
  .contact-form label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
  }
  
  .contact-form input, .contact-form textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-background-dark);
    border-radius: 4px;
    transition: border-color var(--transition-fast);
  }
  
  .contact-form input:focus, .contact-form textarea:focus {
    outline: none;
    border-color: var(--color-primary);
  }
  
  .checkbox-group {
    display: flex;
    align-items: flex-start;
  }
  
  .checkbox-group input {
    width: auto;
    margin-right: var(--spacing-sm);
    margin-top: 0.25rem;
  }
  
  .checkbox-group label {
    margin-bottom: 0;
  }
  
  /* FAQ section */
  .faq-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-background-light);
  }
  
  .faq-container {
    max-width: 800px;
    margin: 0 auto;
  }
  
  .faq-item {
    margin-bottom: var(--spacing-md);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-small);
    background-color: var(--color-background);
  }
  
  .faq-question {
    padding: var(--spacing-md);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color var(--transition-fast);
  }
  
  .faq-question:hover {
    background-color: rgba(0, 0, 0, 0.02);
  }
  
  .faq-question h3 {
    margin: 0;
    font-size: 1.1rem;
  }
  
  .faq-toggle {
    transition: transform var(--transition-fast);
  }
  
  .faq-question.active .faq-toggle {
    transform: rotate(45deg);
  }
  
  .faq-answer {
    padding: 0 var(--spacing-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-medium), padding var(--transition-medium);
  }
  
  .faq-item.active .faq-answer {
    padding: 0 var(--spacing-md) var(--spacing-md);
    max-height: 500px;
  }
  
  /* About page */
  .about-section {
    padding: var(--spacing-xl) 0;
  }
  
  .about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
  }
  
  .about-text h2 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
  }
  
  .about-text h2:first-child {
    margin-top: 0;
  }
  
  .about-text ul {
    margin-bottom: var(--spacing-lg);
  }
  
  .about-text li {
    margin-bottom: var(--spacing-sm);
  }
  
  /* Blog page */
  .blog-content {
    padding: var(--spacing-xl) 0;
  }
  
  .blog-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
  }
  
  .blog-post {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-background-dark);
  }
  
  .post-meta {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
  }
  
  .post-category {
    background-color: var(--color-primary-light);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    margin-left: var(--spacing-sm);
  }
  
  .post-title {
    margin-bottom: var(--spacing-md);
  }
  
  .sidebar-widget {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background-color: var(--color-background);
    border-radius: 8px;
    box-shadow: var(--shadow-small);
  }
  
  .sidebar-widget h3 {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-background-dark);
  }
  
  .search-form {
    display: flex;
    margin-top: var(--spacing-md);
  }
  
  .search-form input {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid var(--color-background-dark);
    border-radius: 4px 0 0 4px;
    border-right: none;
  }
  
  .search-form button {
    background-color: var(--color-primary);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
  }
  
  .categories-list {
    list-style: none;
    padding: 0;
  }
  
  .categories-list li {
    margin-bottom: var(--spacing-sm);
    display: flex;
    justify-content: space-between;
  }
  
  .popular-post {
    margin-bottom: var(--spacing-md);
  }
  
  .popular-post h4 {
    margin-bottom: var(--spacing-xs);
    font-size: 1rem;
  }
  
  .post-date {
    font-size: 0.8rem;
    color: var(--color-text-light);
  }
  
  /* Legal pages */
  .privacy-content, .terms-content, .cookie-content {
    padding: var(--spacing-xl) 0;
  }
  
  .legal-content {
    max-width: 800px;
    margin: 0 auto;
  }
  
  .last-updated {
    font-style: italic;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
  }
  
  .section-block {
    margin-bottom: var(--spacing-xl);
  }
  
  .section-block h2 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
  }
  
  .section-block h3 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
  }
  
  .section-block ul {
    margin-bottom: var(--spacing-lg);
  }
  
  /* Thank you page */
  .thank-you-section {
    padding: var(--spacing-xl) 0;
    text-align: center;
  }
  
  .thank-you-content {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    background-color: var(--color-background);
    border-radius: 8px;
    box-shadow: var(--shadow-small);
  }
  
  .thank-you-icon {
    font-size: 5rem;
    color: var(--color-success);
    margin-bottom: var(--spacing-lg);
  }
  
  .thank-you-actions {
    margin-top: var(--spacing-xl);
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
  }
  
  /* Pagination */
  .pagination {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-xl);
  }
  
  .pagination a {
    display: inline-block;
    padding: 0.5rem 1rem;
    margin: 0 var(--spacing-xs);
    border-radius: 4px;
    background-color: var(--color-background);
    color: var(--color-text);
    box-shadow: var(--shadow-small);
    transition: all var(--transition-fast);
  }
  
  .pagination a:hover, .pagination a.active {
    background-color: var(--color-primary);
    color: white;
  }
  
  .pagination a.next {
    margin-left: var(--spacing-md);
  }
  
  /* CTA Section */
  .cta-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-primary-light);
    color: white;
  }
  
  .cta-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
  }
  
  .cta-content h2 {
    color: white;
    margin-bottom: var(--spacing-md);
  }
  
  .cta-content p {
    margin-bottom: var(--spacing-lg);
  }
  
  /* Courses filters */
  .courses-filters {
    padding: var(--spacing-lg) 0;
    background-color: var(--color-background);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-small);
  }
  
  .filters {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-md);
  }
  
  .filter-group {
    flex: 1;
    min-width: 200px;
  }
  
  .filter-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
  }
  
  .filter-group select {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--color-background-dark);
    border-radius: 4px;
    background-color: var(--color-background);
  }
  
  /* Animace */
  @keyframes fadeInDown {
    from {
      opacity: 0;
      transform: translateY(-20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  @keyframes fadeInUp {
    from {
      opacity: 0;
      transform: translateY(20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  /* Responsivní design */
  @media (max-width: 992px) {
    .blog-grid {
      grid-template-columns: 1fr;
    }
    
    .courses-grid {
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
  }
  
  @media (max-width: 768px) {
    .menu-toggle {
      display: block;
    }
    
    .main-nav {
      position: absolute;
      top: 100%;
      left: 0;
      width: 100%;
      background-color: var(--color-background);
      box-shadow: var(--shadow-medium);
      max-height: 0;
      overflow: hidden;
      transition: max-height var(--transition-medium);
    }
    
    .main-nav.active {
      max-height: 300px;
    }
    
    .main-nav ul {
      flex-direction: column;
      padding: var(--spacing-md);
    }
    
    .main-nav li {
      margin: 0 0 var(--spacing-sm) 0;
    }
    
    .hero h1 {
      font-size: 2.5rem;
    }
    
    .testimonial {
      max-width: 100%;
    }
    
    .footer-content {
      flex-direction: column;
    }
    
    .newsletter-form {
      flex-direction: column;
    }
    
    .newsletter-form input {
      width: 100%;
      margin-bottom: var(--spacing-sm);
      border-radius: 4px;
    }
    
    .newsletter-form button {
      width: 100%;
      border-radius: 4px;
    }
    
    .thank-you-actions {
      flex-direction: column;
    }
  }
  
  @media (max-width: 576px) {
    h1 {
      font-size: 2rem;
    }
    
    h2 {
      font-size: 1.75rem;
    }
    
    .hero h1 {
      font-size: 2rem;
    }
    
    .hero p {
      font-size: 1rem;
    }
    
    .features-grid {
      grid-template-columns: 1fr;
    }
    
    .contact-form-container, .contact-info {
      padding: var(--spacing-md);
    }
  }