/* ===============================================
   COLORFUL GRIDNEM THEME - Enhanced Styling
   =============================================== */

/* Color Variables for Consistency */
:root {
  /* Primary Color Palette */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --warning-gradient: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
  --danger-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
  
  /* Text Colors */
  --text-primary: #2d3748;
  --text-secondary: #4a5568;
  --text-accent: #667eea;
  --text-white: #ffffff;
  
  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f7fafc;
  --bg-accent: #edf2f7;
  
  /* Shadow System */
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
}

/* Enhanced Typography with Colorful Elements */
h1, h2, h3, h4, h5, h6 {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin-bottom: 1rem;
  position: relative;
  animation: fadeInUp 0.6s ease-out;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 2rem;
  background: var(--secondary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h3 {
  font-size: 1.75rem;
  background: var(--success-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h4 {
  font-size: 1.5rem;
  background: var(--warning-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h5 {
  font-size: 1.25rem;
  background: var(--danger-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h6 {
  font-size: 1.125rem;
  color: var(--text-accent);
}

/* Enhanced Link Styling */
a {
  color: var(--text-accent);
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
}

a:hover {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transform: translateY(-1px);
}

a:hover::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary-gradient);
  border-radius: 1px;
  animation: linkUnderline 0.3s ease-out;
}

/* Enhanced Card Styling */
.c-post-card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  border: 1px solid rgba(0, 0, 0, 0.05);
  overflow: hidden;
  position: relative;
}

.c-post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.c-post-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary-gradient);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.c-post-card:hover::before {
  opacity: 1;
}

/* Enhanced Header Styling */
.c-header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: var(--shadow-sm);
}

/* Enhanced Logo Styling */
.c-logo__link {
  font-size: 1.75rem;
  font-weight: 800;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-transform: uppercase;
  letter-spacing: -0.025em;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

/* Logo Symbol Animation */
.logo-symbol {
  font-size: 1.2em;
  animation: logoSparkle 3s ease-in-out infinite;
  filter: drop-shadow(0 2px 4px rgba(102, 126, 234, 0.3));
  background: linear-gradient(45deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4, #feca57);
  background-size: 300% 300%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@keyframes logoSparkle {
  0%, 100% {
    transform: scale(1) rotate(0deg);
    opacity: 0.8;
  }
  25% {
    transform: scale(1.1) rotate(5deg);
    opacity: 1;
  }
  50% {
    transform: scale(1.05) rotate(-5deg);
    opacity: 0.9;
  }
  75% {
    transform: scale(1.1) rotate(3deg);
    opacity: 1;
  }
}

/* Category Title Enhancement */
.category-title {
  position: relative;
  text-align: center;
  padding: 2rem 0;
}

.category-title::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80%;
  height: 3px;
  background: var(--primary-gradient);
  border-radius: 2px;
  z-index: -1;
  opacity: 0.3;
}

/* Enhanced Button Styling */
.btn-dwn {
  background: var(--primary-gradient);
  border: none;
  border-radius: var(--radius-md);
  padding: 0.75rem 1.5rem;
  color: var(--text-white);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.025em;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.btn-dwn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-dwn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.btn-dwn:hover::before {
  left: 100%;
}

/* Enhanced Image Styling */
.ddimage, .kg-image {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
}

.ddimage:hover, .kg-image:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

/* Enhanced Figure Caption */
figcaption {
  color: var(--text-secondary);
  font-style: italic;
  text-align: center;
  margin-top: 0.5rem;
  padding: 0.5rem;
  background: var(--bg-accent);
  border-radius: var(--radius-sm);
  border-left: 3px solid;
  border-image: var(--primary-gradient) 1;
}

/* Enhanced Post Meta */
.c-post-card__meta, .c-post-header__meta {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
}

.c-post-card__date, .c-post-header__date {
  background: var(--success-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 600;
}

.c-post-card__authors a, .c-post-header__authors a {
  background: var(--secondary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 600;
}

/* Enhanced Navigation */
.mynav {
  background: var(--primary-gradient);
  color: var(--text-white);
  border: none;
  border-radius: var(--radius-md);
  padding: 0.5rem 1rem;
  font-weight: 600;
  transition: all 0.3s ease;
}

.mynav:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Enhanced Dropdown */
.c-dropdown-menu {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.c-dropdown-item:hover {
  background: var(--primary-gradient);
  color: var(--text-white);
  border-radius: var(--radius-sm);
}

/* Enhanced Modal */
.modal {
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.modal-content {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.modal-content select, .modal-content input {
  border-radius: var(--radius-md);
  border: 2px solid rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.modal-content select:focus, .modal-content input:focus {
  border-image: var(--primary-gradient) 1;
  outline: none;
  box-shadow: var(--shadow-md);
}

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

@keyframes linkUnderline {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

/* Responsive Enhancements */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  h3 {
    font-size: 1.5rem;
  }
  
  .c-post-card {
    margin-bottom: 1.5rem;
  }
}

/* Additional Colorful Elements */
.highlight {
  background: var(--warning-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 600;
}

.accent-border {
  border-left: 4px solid;
  border-image: var(--primary-gradient) 1;
  padding-left: 1rem;
}

.gradient-bg {
  background: var(--primary-gradient);
  color: var(--text-white);
  padding: 2rem;
  border-radius: var(--radius-xl);
  text-align: center;
}

/* Loading Animation */
.loading {
  animation: pulse 2s infinite;
}

/* Enhanced Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

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

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