/* ============================================
   Custom Modern Styling for Jan-Eric Gaidusch Portfolio
   ============================================ */

/* Global Enhancements */
:root {
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --primary-color: #667eea;
  --secondary-color: #764ba2;
  --dark-text: #2c3e50;
  --light-text: #555;
  --border-radius: 12px;
  --shadow-sm: 0 2px 10px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.15);
  --transition: all 0.3s ease;
}

/* Smooth Scrolling */
html {
  scroll-behavior: smooth;
}

/* Enhanced Typography */
body {
  font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--light-text);
  line-height: 1.7;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--dark-text);
  font-weight: 700;
  line-height: 1.3;
}

/* Modern Link Styling */
a {
  color: var(--primary-color);
  transition: var(--transition);
}

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

/* Enhanced Navbar */
.navbar {
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
  background-color: rgba(255, 255, 255, 0.95) !important;
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.3rem;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-nav .nav-link {
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--primary-gradient);
  transition: width 0.3s ease;
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
  width: 80%;
}

/* Enhanced Header */
.intro-header {
  position: relative;
  overflow: hidden;
}

.intro-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.3) 0%, rgba(118, 75, 162, 0.3) 100%);
  z-index: 1;
}

.intro-header .page-heading,
.intro-header .post-heading {
  position: relative;
  z-index: 2;
}

/* Enhanced Page Heading */
.page-heading h1,
.post-heading h1 {
  font-size: 3rem;
  font-weight: 800;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

.page-heading .page-subheading,
.post-heading .post-subheading {
  font-size: 1.3rem;
  font-weight: 400;
  opacity: 0.95;
}

/* Modern Card Styling */
.card {
  border: none;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

/* Enhanced Buttons */
.btn {
  border-radius: 8px;
  font-weight: 600;
  padding: 0.7rem 1.8rem;
  transition: var(--transition);
  border: none;
}

.btn-primary {
  background: var(--primary-gradient);
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

/* Enhanced Footer */
.footer {
  background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
  padding: 3rem 0;
}

.footer .list-inline-item a {
  transition: var(--transition);
  color: rgba(255,255,255,0.8);
}

.footer .list-inline-item a:hover {
  color: var(--primary-color);
  transform: translateY(-3px);
  display: inline-block;
}

/* Blog Post Cards */
.post-preview {
  padding: 2rem;
  margin-bottom: 2rem;
  border-radius: var(--border-radius);
  background: white;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border-left: 4px solid transparent;
}

.post-preview:hover {
  box-shadow: var(--shadow-md);
  border-left-color: var(--primary-color);
  transform: translateX(5px);
}

.post-preview h2 a {
  color: var(--dark-text);
  text-decoration: none;
}

.post-preview h2 a:hover {
  color: var(--primary-color);
}

.post-meta {
  color: #888;
  font-size: 0.9rem;
}

/* Tags Styling */
.blog-tags a,
.tag-btn {
  display: inline-block;
  padding: 0.4rem 1rem;
  margin: 0.3rem;
  background: var(--primary-gradient);
  color: white !important;
  border-radius: 20px;
  font-size: 0.85rem;
  text-decoration: none;
  transition: var(--transition);
}

.blog-tags a:hover,
.tag-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

/* Code Blocks */
pre {
  border-radius: var(--border-radius);
  border: none;
  box-shadow: var(--shadow-sm);
}

code {
  background: #f8f9fa;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  color: #e83e8c;
  font-size: 0.9em;
}

/* Pagination */
.pagination .page-link {
  border-radius: 8px;
  margin: 0 0.3rem;
  border: 2px solid #e9ecef;
  color: var(--primary-color);
  transition: var(--transition);
}

.pagination .page-link:hover {
  background: var(--primary-gradient);
  color: white;
  border-color: transparent;
  transform: translateY(-2px);
}

.pagination .page-item.active .page-link {
  background: var(--primary-gradient);
  border-color: transparent;
}

/* Scroll to Top Button Enhancement */
#return-to-top {
  background: var(--primary-gradient);
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

#return-to-top:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

/* Loading Animation */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* Gradient Text Utility */
.gradient-text {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Modern Box Shadow Utilities */
.shadow-custom-sm {
  box-shadow: var(--shadow-sm);
}

.shadow-custom-md {
  box-shadow: var(--shadow-md);
}

.shadow-custom-lg {
  box-shadow: var(--shadow-lg);
}

/* Responsive Image Enhancement */
img {
  border-radius: var(--border-radius);
  transition: var(--transition);
}

img:hover {
  transform: scale(1.02);
}

/* Avatar Enhancement */
.avatar-img {
  border: 3px solid white;
  box-shadow: var(--shadow-md);
}

/* Social Media Icons Enhancement */
.social-icons a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: white;
  color: var(--primary-color);
  margin: 0 0.5rem;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.social-icons a:hover {
  background: var(--primary-gradient);
  color: white;
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* Blockquote Styling */
blockquote {
  border-left: 4px solid var(--primary-color);
  padding-left: 1.5rem;
  margin: 1.5rem 0;
  background: #f8f9fa;
  padding: 1rem 1.5rem;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

/* Form Enhancements */
.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

/* Table Enhancements */
.table {
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.table thead {
  background: var(--primary-gradient);
  color: white;
}

/* Alert Enhancements */
.alert {
  border-radius: var(--border-radius);
  border: none;
  box-shadow: var(--shadow-sm);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .page-heading h1,
  .post-heading h1 {
    font-size: 2rem;
  }

  .page-heading .page-subheading,
  .post-heading .post-subheading {
    font-size: 1.1rem;
  }
}

/* Dark Mode Support (Optional) */
@media (prefers-color-scheme: dark) {
  /* Add dark mode styles if needed */
}

/* Accessibility Enhancements */
*:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Print Styles */
@media print {
  .navbar,
  .footer,
  #return-to-top {
    display: none;
  }

  body {
    color: #000;
  }

  a {
    color: #000;
    text-decoration: underline;
  }
}

/* Selection Styling */
::selection {
  background: var(--primary-color);
  color: white;
}

::-moz-selection {
  background: var(--primary-color);
  color: white;
}

/* Smooth Transitions for All Interactive Elements */
button,
input,
select,
textarea,
a {
  transition: var(--transition);
}

/* Custom Scrollbar (Webkit browsers) */
::-webkit-scrollbar {
  width: 12px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: var(--primary-gradient);
  border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--secondary-color);
}