/* 
 * Custom CSS for Farma U Zvědavé Kozy
 * Modern styling with Bootstrap 5.3 integration
 * Updated: January 2026
 */

/* ========================================
   CSS Variables - Design System
   ======================================== */
:root {
  /* Color Palette - Modernized */
  --primary-green: #99CC66;
  --primary-green-dark: #7AB33D;
  --primary-green-light: #B8E086;
  
  --secondary-green: #5C743D;
  --secondary-green-dark: #4A5F30;
  
  --accent-brown: #993300;
  --accent-brown-hover: #CC4400;
  
  --bg-cream: #F4FFE4;
  --bg-light-green: #D5EDB3;
  --bg-white: #FFFFFF;
  
  --text-dark: #333333;
  --text-medium: #666666;
  --text-light: #999999;
  
  /* Typography */
  --font-primary: 'Inter', 'Segoe UI', Arial, sans-serif;
  --font-headings: 'Poppins', 'Helvetica Neue', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* ========================================
   Global Styles
   ======================================== */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-primary);
  color: var(--text-dark);
  background-color: var(--bg-cream);
  line-height: 1.6;
  font-size: 16px;
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headings);
  font-weight: 600;
  color: var(--secondary-green);
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
}

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(--spacing-sm);
  color: var(--text-medium);
}

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

a:hover,
a:focus {
  color: var(--accent-brown-hover);
  text-decoration: underline;
}

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

/* ========================================
   Header Styles
   ======================================== */
.site-header {
  background: linear-gradient(135deg, var(--bg-light-green) 0%, var(--primary-green-light) 100%);
  padding: var(--spacing-md) 0;
  box-shadow: var(--shadow-md);
}

.site-header .header-banner {
  background-color: var(--bg-light-green);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--spacing-md);
}

.site-header .header-banner img {
  width: 100%;
  height: auto;
  display: block;
}

/* ========================================
   Navigation Styles
   ======================================== */
.navbar {
  background-color: var(--secondary-green) !important;
  box-shadow: var(--shadow-md);
  padding: 0;
}

.navbar-brand {
  font-family: var(--font-headings);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--bg-light-green) !important;
  letter-spacing: 0.05em;
  padding: var(--spacing-sm) var(--spacing-md);
}

.navbar-nav .nav-link {
  color: var(--bg-light-green) !important;
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 2px solid transparent;
  transition: all var(--transition-normal);
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus,
.navbar-nav .nav-link.active {
  background-color: var(--primary-green);
  color: var(--accent-brown) !important;
  border-bottom-color: var(--accent-brown);
}

.navbar-toggler {
  border-color: var(--bg-light-green);
  padding: 0.5rem;
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23D5EDB3' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ========================================
   Main Content Styles
   ======================================== */
.main-content {
  background-color: var(--bg-white);
  padding: var(--spacing-xl) 0;
  min-height: 60vh;
}

.content-section {
  background-color: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

/* ========================================
   Sidebar / News Section
   ======================================== */
.sidebar {
  background-color: var(--bg-cream);
  border-left: 3px solid var(--primary-green);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.sidebar h3 {
  color: var(--primary-green);
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px dashed var(--primary-green);
}

.news-item {
  background-color: var(--bg-white);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent-brown);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.news-item:hover {
  transform: translateX(5px);
  box-shadow: var(--shadow-md);
}

.news-date {
  color: var(--accent-brown);
  font-weight: 700;
  font-size: 0.875rem;
  margin-bottom: var(--spacing-xs);
  display: block;
}

.news-content {
  font-size: 0.9rem;
  color: var(--text-medium);
  line-height: 1.5;
}

.news-link {
  display: inline-block;
  margin-top: var(--spacing-xs);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary-green);
}

.news-link:hover {
  color: var(--primary-green-dark);
}

/* ========================================
   Cards & Product Styles
   ======================================== */
.card {
  border: none;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  overflow: hidden;
  height: 100%;
}

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

.card-header {
  background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-dark) 100%);
  color: var(--bg-white);
  font-weight: 600;
  padding: var(--spacing-md);
  border-bottom: none;
}

.card-body {
  padding: var(--spacing-lg);
}

.card-title {
  color: var(--secondary-green);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.card-text {
  color: var(--text-medium);
  font-size: 0.95rem;
}

/* ========================================
   Buttons
   ======================================== */
.btn-primary {
  background-color: var(--primary-green);
  border-color: var(--primary-green);
  color: var(--bg-white);
  font-weight: 600;
  padding: 0.625rem 1.5rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.9rem;
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--primary-green-dark);
  border-color: var(--primary-green-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--accent-brown);
  border-color: var(--accent-brown);
  color: var(--bg-white);
}

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

/* ========================================
   Footer
   ======================================== */
.site-footer {
  background-color: var(--secondary-green);
  color: var(--bg-light-green);
  padding: var(--spacing-lg) 0;
  margin-top: var(--spacing-xl);
  border-top: 3px solid var(--primary-green);
}

.site-footer p {
  color: var(--bg-light-green);
  margin-bottom: var(--spacing-xs);
}

.site-footer a {
  color: var(--bg-white);
}

.site-footer a:hover {
  color: var(--primary-green-light);
}

/* ========================================
   Utility Classes
   ======================================== */
.text-primary-green {
  color: var(--primary-green) !important;
}

.text-secondary-green {
  color: var(--secondary-green) !important;
}

.bg-cream {
  background-color: var(--bg-cream) !important;
}

.bg-light-green {
  background-color: var(--bg-light-green) !important;
}

.separator {
  height: 2px;
  background: linear-gradient(to right, transparent, var(--primary-green), transparent);
  margin: var(--spacing-lg) 0;
  border: none;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 991.98px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
  
  .sidebar {
    margin-top: var(--spacing-lg);
    border-left: none;
    border-top: 3px solid var(--primary-green);
  }
  
  .content-section {
    padding: var(--spacing-md);
  }
}

@media (max-width: 767.98px) {
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.5rem; }
  
  .main-content {
    padding: var(--spacing-lg) 0;
  }
  
  .navbar-nav .nav-link {
    border-bottom: 1px solid rgba(213, 237, 179, 0.2);
    padding: var(--spacing-sm);
  }
  
  .navbar-nav .nav-link:hover,
  .navbar-nav .nav-link.active {
    border-bottom-color: var(--accent-brown);
  }
}

@media (max-width: 575.98px) {
  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }
  
  .content-section {
    padding: var(--spacing-sm);
  }
  
  .news-item {
    padding: var(--spacing-sm);
  }
}

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

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
  .navbar,
  .site-footer,
  .sidebar {
    display: none;
  }
  
  body {
    background-color: white;
  }
  
  .main-content {
    padding: 0;
  }
}