/* 
 * AI Website Development - Main Stylesheet
 * Custom styling for the presentation platform
 */

:root {
  /* Color scheme as defined in the plan */
  --primary: #2563EB;     /* Royal Blue */
  --secondary: #7C3AED;   /* Purple */
  --accent: #F59E0B;      /* Amber */
  --dark: #1E293B;        /* Slate */
  --light: #F8FAFC;       /* Gray */
  --success: #10B981;     /* Emerald */
  --warning: #F59E0B;     /* Amber */
  --error: #EF4444;       /* Red */
  
  /* Spacing variables */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  
  /* Shadow variables */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1), 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
  
  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
}

/* Base styling */
body {
  background-color: var(--light);
  color: var(--dark);
  padding-top: 60px; /* Account for fixed navbar */
  scroll-behavior: smooth;
  scroll-padding-top: 70px;
}

/* Typography enhancements */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
}

code, pre {
  border-radius: var(--radius-sm);
}

/* Gradient text for title slides */
.gradient-text {
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Slide styling */
.slide {
  min-height: 100vh;
  padding: var(--spacing-lg) 0;
  position: relative;
  scroll-margin-top: 70px;
}

.slide-content {
  max-width: 1200px;
  margin: 0 auto;
}

.title-slide {
  background: linear-gradient(135deg, #f5f7fa 0%, #e4e7eb 100%);
  position: relative;
}

.title-slide::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('../images/backgrounds/grid-pattern.svg');
  background-size: 20px 20px;
  opacity: 0.4;
  z-index: 0;
}

.title-slide .slide-content {
  position: relative;
  z-index: 1;
}

/* Card styling */
.card {
  border: none;
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-title {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

/* Button enhancements */
.btn {
  border-radius: var(--radius-sm);
  font-weight: 500;
  padding: 0.5rem 1.25rem;
  transition: all 0.2s ease;
}

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

.btn-primary:hover {
  background-color: #1d4ed8; /* Slightly darker */
  border-color: #1d4ed8;
  box-shadow: 0 4px 8px rgba(37, 99, 235, 0.2);
}

.btn-outline-secondary {
  color: var(--secondary);
  border-color: var(--secondary);
}

.btn-outline-secondary:hover {
  background-color: var(--secondary);
  color: white;
}

/* Navigation */
.navigation-controls button {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Slide navigation sidebar */
#slideNav .list-group-item.active {
  background-color: var(--primary);
  border-color: var(--primary);
}

/* Placeholder for images/diagrams */
.placeholder-box {
  border: 2px dashed #cbd5e1;
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  text-align: center;
  background-color: #f1f5f9;
  margin: var(--spacing-md) 0;
}

.placeholder-box i {
  font-size: 2rem;
  color: #94a3b8;
  margin-bottom: var(--spacing-sm);
}

.placeholder-box h4 {
  margin-bottom: var(--spacing-sm);
  color: #64748b;
}

.placeholder-box p {
  color: #64748b;
  max-width: 80%;
  margin: 0 auto;
}

/* Code box styling */
.code-box {
  position: relative;
  margin: var(--spacing-md) 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.code-box pre {
  margin-bottom: 0;
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
}

.code-box .code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem var(--spacing-sm);
  background-color: #2d3748;
  color: white;
  font-size: 0.85rem;
}

.code-box .copy-btn {
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.code-box .copy-btn:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

/* Progress bar styling */
.progress {
  height: 4px;
  background-color: rgba(0, 0, 0, 0.1);
}

.progress-bar {
  background-color: var(--primary);
}

/* List styling enhancements */
.list-group-item {
  border-left: none;
  border-right: none;
  padding: var(--spacing-sm) var(--spacing-md);
  transition: all 0.2s ease;
}

.list-group-item:hover {
  background-color: rgba(0, 0, 0, 0.02);
}

.list-group-item i {
  flex-shrink: 0;
  width: 24px;
  text-align: center;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .slide {
    padding: var(--spacing-md) var(--spacing-sm);
  }
  
  .display-1 {
    font-size: 2.5rem;
  }
  
  .display-4 {
    font-size: 1.75rem;
  }
  
  .card {
    margin-bottom: var(--spacing-md);
  }
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.5s ease forwards;
}

/* Dark mode (will be toggled via JavaScript) */
body.dark-mode {
  background-color: var(--dark);
  color: var(--light);
}

body.dark-mode .card {
  background-color: #293548;
  color: var(--light);
}

body.dark-mode .list-group-item {
  background-color: #293548;
  color: var(--light);
  border-color: #374151;
}

body.dark-mode .title-slide {
  background: linear-gradient(135deg, #1a202c 0%, #2d3748 100%);
}

/* Exercise box */
.exercise-box {
  background-color: rgba(16, 185, 129, 0.1);
  border-left: 4px solid var(--success);
  padding: var(--spacing-md);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: var(--spacing-md) 0;
}

/* Key takeaway box */
.key-takeaway {
  background-color: rgba(124, 58, 237, 0.1);
  border-left: 4px solid var(--secondary);
  padding: var(--spacing-md);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: var(--spacing-md) 0;
}

/* Comparison table */
.comparison-table th {
  background-color: var(--primary);
  color: white;
  padding: var(--spacing-sm);
}

.comparison-table td {
  padding: var(--spacing-sm);
  vertical-align: middle;
}

.comparison-table tr:nth-child(even) {
  background-color: rgba(0, 0, 0, 0.02);
}

/* Tab navigation for content slides */
.slide-tabs .nav-link {
  color: var(--dark);
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  transition: all 0.2s ease;
}

.slide-tabs .nav-link.active {
  background-color: var(--primary);
  color: white;
}

.slide-tabs .tab-content {
  padding: var(--spacing-md);
  border: 1px solid #e2e8f0;
  border-radius: 0 var(--radius-md) var(--radius-md) var(--radius-md);
}