/* 
  ===================================
  REACH Capstone Website - Custom CSS
  ===================================
  
  This stylesheet provides custom styling for the REACH Capstone project website.
  It includes comprehensive dark mode support for Bootstrap 4 components,
  custom component styling, and responsive design enhancements.
  
  Author: REACH Development Team
  Version: 1.0
  Last Updated: 2024
*/

/* Import Bootstrap CSS framework for base styling */
@import url('bootstrap.min.css');

/* ===================================
   DARK MODE FOR BOOTSTRAP 4
   =================================== */
/*
  This section provides comprehensive dark mode styling for Bootstrap 4.
  Since Bootstrap 4 doesn't have built-in dark mode support, we override
  the default light theme colors with dark alternatives.
*/

/* 
  Base dark mode styles for the entire page
  Sets the foundation for all dark theme elements
*/
body {
  background-color: #1a1a1a;
  color: #e0e0e0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
}

/* 
  Heading elements styling for dark mode
  All heading levels get white color for maximum contrast
*/
h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
  color: #ffffff;
}

/* 
  Text utility classes for dark mode
  Overrides Bootstrap's default text colors
*/
.text-muted {
  color: #999999 !important;
}

.text-dark {
  color: #e0e0e0 !important;
}

.lead {
  color: #d0d0d0;
}

/* 
  Link styling for dark mode
  Uses blue accent colors that work well on dark backgrounds
*/
a {
  color: #6ea8fe;
}

a:hover {
  color: #9ec5fe;
}

/* 
  Card component styling for dark mode
  Cards are a major component used throughout the site
*/
.card {
  background-color: #2d2d2d;
  border-color: #404040;
  color: #e0e0e0;
}

.card-header {
  background-color: #252525;
  border-bottom-color: #404040;
  color: #ffffff;
}

.card-footer {
  background-color: #252525;
  border-top-color: #404040;
}

.card-title {
  color: #ffffff;
}

.card-text {
  color: #d0d0d0;
}

/* 
  Navigation bar styling for dark mode
  Provides consistent dark theme for site navigation
*/
.navbar-dark {
  background-color: #0a1929 !important;
}

.navbar-light {
  background-color: #2d2d2d !important;
}

.navbar-light .navbar-brand,
.navbar-light .navbar-nav .nav-link {
  color: #b0c4de !important;
}

.navbar-light .navbar-nav .nav-link:hover,
.navbar-light .navbar-nav .nav-link.active {
  color: #ffffff !important;
}

/* 
  Button styling for dark mode
  Overrides Bootstrap button colors for dark theme
*/
.btn-light {
  background-color: #404040;
  border-color: #505050;
  color: #ffffff;
}

.btn-light:hover {
  background-color: #505050;
  border-color: #606060;
  color: #ffffff;
}

.btn-outline-light {
  color: #f8f9fa;
  border-color: #f8f9fa;
}

.btn-outline-light:hover {
  background-color: #f8f9fa;
  color: #1a1a1a;
}

/* 
  Table styling for dark mode
  Ensures tables are readable and consistent with dark theme
*/
.table {
  color: #e0e0e0;
  border-color: #404040;
}

.table thead th {
  border-bottom-color: #404040;
  color: #ffffff;
}

.table td, .table th {
  border-top-color: #404040;
}

.table-striped tbody tr:nth-of-type(odd) {
  background-color: rgba(255, 255, 255, 0.05);
}

.table-hover tbody tr:hover {
  background-color: rgba(255, 255, 255, 0.075);
  color: #ffffff;
}

/* 
  Form control styling for dark mode
  Makes form inputs consistent with dark theme
*/
.form-control {
  background-color: #2d2d2d;
  border-color: #404040;
  color: #e0e0e0;
}

.form-control:focus {
  background-color: #353535;
  border-color: #6ea8fe;
  color: #ffffff;
}

.form-control::placeholder {
  color: #999999;
}

.form-control:disabled,
.form-control[readonly] {
  background-color: #252525;
  color: #666666;
}

/* 
  Input group styling for dark mode
  Ensures input group addons match the dark theme
*/
.input-group-text {
  background-color: #2d2d2d;
  border-color: #404040;
  color: #e0e0e0;
}

/* 
  Modal dialog styling for dark mode
  Makes modal dialogs consistent with dark theme
*/
.modal-content {
  background-color: #2d2d2d;
  border-color: #404040;
  color: #e0e0e0;
}

.modal-header {
  border-bottom-color: #404040;
}

.modal-footer {
  border-top-color: #404040;
}

.close {
  color: #ffffff;
  text-shadow: none;
}

/* 
  Dropdown menu styling for dark mode
  Ensures dropdown menus are consistent with dark theme
*/
.dropdown-menu {
  background-color: #2d2d2d;
  border-color: #404040;
}

.dropdown-item {
  color: #e0e0e0;
}

.dropdown-item:hover,
.dropdown-item:focus {
  background-color: #404040;
  color: #ffffff;
}

.dropdown-divider {
  border-top-color: #404040;
}

/* 
  Alert component styling for dark mode
  Makes alerts consistent with dark theme
*/
.alert {
  border-color: #404040;
}

.alert-light {
  background-color: #2d2d2d;
  border-color: #404040;
  color: #e0e0e0;
}

/* 
  Badge component styling for dark mode
  Ensures badges are visible on dark backgrounds
*/
.badge-light {
  background-color: #404040;
  color: #ffffff;
}

/* 
  List group styling for dark mode
  Ensures list groups are consistent with dark theme
*/
.list-group-item {
  background-color: #2d2d2d;
  border-color: #404040;
  color: #e0e0e0;
}

.list-group-item:hover {
  background-color: #353535;
}

.list-group-item.active {
  background-color: #0d6efd;
  border-color: #0d6efd;
}

/* 
  Breadcrumb navigation styling for dark mode
  Makes breadcrumbs consistent with dark theme
*/
.breadcrumb {
  background-color: #2d2d2d;
}

.breadcrumb-item + .breadcrumb-item::before {
  color: #999999;
}

/* 
  Pagination component styling for dark mode
  Ensures pagination is visible and consistent
*/
.page-link {
  background-color: #2d2d2d;
  border-color: #404040;
  color: #6ea8fe;
}

.page-link:hover {
  background-color: #404040;
  border-color: #505050;
  color: #9ec5fe;
}

.page-item.active .page-link {
  background-color: #0d6efd;
  border-color: #0d6efd;
}

.page-item.disabled .page-link {
  background-color: #252525;
  border-color: #404040;
  color: #666666;
}

/* 
  Progress bar styling for dark mode
  Ensures progress bars are visible on dark backgrounds
*/
.progress {
  background-color: #2d2d2d;
}

/* 
  Jumbotron component styling for dark mode
  Makes jumbotrons consistent with dark theme
*/
.jumbotron {
  background-color: #2d2d2d;
  color: #e0e0e0;
}

/* 
  Border utility styling for dark mode
  Overrides default border colors
*/
.border {
  border-color: #404040 !important;
}

/* 
  Background utility classes for dark mode
  Overrides Bootstrap's default background colors
*/
.bg-light {
  background-color: #e0e0e0 !important;
}

.bg-white {
  background-color: #1a1a1a !important;
}

.bg-dark {
  background-color: #0a0a0a !important;
}

/* 
  Text selection styling for dark mode
  Makes selected text visible and consistent
*/
::selection {
  background-color: #6ea8fe;
  color: #ffffff;
}

/* 
  Scrollbar styling for dark mode (webkit browsers only)
  Customizes scrollbar appearance to match dark theme
*/
::-webkit-scrollbar {
  width: 12px;
}

::-webkit-scrollbar-track {
  background: #1a1a1a;
}

::-webkit-scrollbar-thumb {
  background: #404040;
  border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
  background: #505050;
}

/* ===================================
   CUSTOM STYLES FOR REACH WEBSITE
   =================================== */
/*
  This section contains custom styling specific to the REACH website
  that enhances the Bootstrap components and provides unique design elements.
*/

/* 
  Navigation brand styling
  Customizes the navbar brand appearance
*/
.navbar-brand {
  font-size: 1.5rem;
}

/* 
  Card hover effects
  Adds smooth transitions and hover animations to cards
*/
.card {
  transition: transform 0.2s ease-in-out;
}

.card:hover {
  transform: translateY(-2px);
}

/* 
  Hero section styling
  Creates an attractive gradient background for hero sections
*/
.hero-section {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 4rem 0;
}

/* 
  Primary outline button styling
  Customizes the appearance of outline primary buttons
*/
.btn-outline-primary {
  border-color: #0d6efd;
  color: #0d6efd;
}

.btn-outline-primary:hover {
  background-color: #0d6efd;
  border-color: #0d6efd;
}

/* 
  Team member card styling
  Special styling for team member cards with enhanced shadows
*/
.team-card {
  border: none;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.team-card img {
  border: 3px solid #f8f9fa;
}

/* 
  Responsive design adjustments
  Optimizes typography and spacing for mobile devices
*/
@media (max-width: 768px) {
  .display-4 {
    font-size: 2rem;
  }
  
  .lead {
    font-size: 1rem;
  }
}

/* 
  Content section styling
  Provides consistent spacing for content sections
*/
.content-section {
  padding: 3rem 0;
}

/* 
  Section header styling
  Creates distinctive headers with blue underline
*/
.section-header {
  border-bottom: 3px solid #0d6efd;
  padding-bottom: 1rem;
  margin-bottom: 2rem;
}

/* 
  Timeline component styling
  Creates a visual timeline with dots and connecting lines
*/
.timeline-item {
  position: relative;
  padding-left: 2rem;
  margin-bottom: 2rem;
}

/* 
  Timeline dot (before pseudo-element)
  Creates the circular dot for each timeline item
*/
.timeline-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 12px;
  height: 12px;
  background-color: #0d6efd;
  border-radius: 50%;
}

/* 
  Timeline connecting line (after pseudo-element)
  Creates the vertical line connecting timeline items
*/
.timeline-item::after {
  content: '';
  position: absolute;
  left: 5px;
  top: 12px;
  width: 2px;
  height: calc(100% + 1rem);
  background-color: #dee2e6;
}

/* 
  Remove connecting line from last timeline item
  Prevents line from extending beyond the last item
*/
.timeline-item:last-child::after {
  display: none;
}

/* 
  Placeholder content styling
  Creates styled placeholders for content that will be added later
*/
.placeholder {
  background-color: #f8f9fa;
  border: 2px dashed #dee2e6;
  padding: 2rem;
  text-align: center;
  color: #6c757d;
  border-radius: 0.375rem;
}

.placeholder h4 {
  color: #495057;
  margin-bottom: 1rem;
}

/* 
  Technology card styling
  Creates distinctive left border for technology cards
*/
.tech-card {
  border-left: 4px solid #0d6efd;
}

/* 
  Document list item styling
  Creates consistent spacing and borders for document lists
*/
.document-item {
  border-bottom: 1px solid #dee2e6;
  padding: 1rem 0;
}

/* 
  Remove border from last document item
  Prevents double border at the end of the list
*/
.document-item:last-child {
  border-bottom: none;
}

/* Custom white outline button */
.btn-outline-white {
  color: #ffffff;              /* text white */
  border-color: #ffffff;       /* border white */
}

.btn-outline-white:hover,
.btn-outline-white:focus,
.btn-outline-white:active {
  color: #000000 !important;   /* text black */
  background-color: #ffffff !important; /* background white */
  border-color: #ffffff !important;     /* keep border white */
}

/* ===================================
   CYBERPUNK ACCENTS - PROFESSIONAL EDGE
   =================================== */

/* 
  Subtle neon accent colors for cyberpunk feel
  Using cyan, electric blue, and neon green sparingly
*/
:root {
  --cyberpunk-cyan: #00ffff;
  --cyberpunk-blue: #0080ff;
  --cyberpunk-green: #00ff80;
  --cyberpunk-purple: #8000ff;
  --cyberpunk-glow: rgba(0, 255, 255, 0.3);
}

/* 
  Enhanced section headers with subtle neon glow
  Adds cyberpunk feel while maintaining professionalism
*/
.section-header {
  border-bottom: 3px solid #0d6efd;
  padding-bottom: 1rem;
  margin-bottom: 2rem;
  position: relative;
}

.section-header::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--cyberpunk-cyan), transparent);
  animation: neon-pulse 3s ease-in-out infinite;
}

/* 
  Subtle neon pulse animation for accent elements
*/
@keyframes neon-pulse {
  0%, 100% {
    opacity: 0.6;
    box-shadow: 0 0 5px var(--cyberpunk-glow);
  }
  50% {
    opacity: 1;
    box-shadow: 0 0 15px var(--cyberpunk-glow);
  }
}

/* 
  Enhanced card hover effects with subtle glow
  Adds cyberpunk edge while maintaining elegance
*/
.card {
  transition: transform 0.2s ease-in-out, box-shadow 0.3s ease;
  position: relative;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 255, 255, 0.1);
}

/* 
  Cyberpunk accent for tech cards
  Adds neon left border with subtle glow
*/
.tech-card {
  border-left: 4px solid var(--cyberpunk-cyan);
  position: relative;
}

.tech-card::before {
  content: '';
  position: absolute;
  left: -4px;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--cyberpunk-cyan), var(--cyberpunk-blue));
  box-shadow: 0 0 10px var(--cyberpunk-glow);
}

/* 
  Enhanced team cards with subtle cyberpunk accents
*/
.team-card {
  border: none;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  position: relative;
  overflow: hidden;
}

.team-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyberpunk-cyan), transparent);
  transition: left 0.5s ease;
}

.team-card:hover::before {
  left: 100%;
}

/* 
  Cyberpunk accent for buttons
  Subtle glow on hover for primary buttons
*/
.btn-primary {
  background: linear-gradient(135deg, #0d6efd, var(--cyberpunk-blue));
  border: none;
  position: relative;
  overflow: hidden;
}

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

.btn-primary:hover {
  box-shadow: 0 0 20px rgba(13, 110, 253, 0.5);
}

/* 
  Enhanced outline buttons with cyberpunk glow
*/
.btn-outline-primary {
  border-color: var(--cyberpunk-blue);
  color: var(--cyberpunk-blue);
  position: relative;
}

.btn-outline-primary:hover {
  background-color: var(--cyberpunk-blue);
  border-color: var(--cyberpunk-blue);
  box-shadow: 0 0 15px rgba(0, 128, 255, 0.4);
}

/* 
  Cyberpunk accent for navigation links
  Subtle glow on active/hover states
*/
.nav-link {
  color: #001f4d !important; /* Ensure nav links remain visible */
}

.nav-link:hover,
.nav-link.active {
  color: #001f4d !important; /* Keep original navy color */
  text-shadow: 0 0 10px rgba(0, 31, 77, 0.3); /* Subtle navy glow */
}

/* 
  Enhanced timeline with cyberpunk dots
*/
.timeline-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 12px;
  height: 12px;
  background: radial-gradient(circle, var(--cyberpunk-cyan), var(--cyberpunk-blue));
  border-radius: 50%;
  box-shadow: 0 0 10px var(--cyberpunk-glow);
}

/* 
  Cyberpunk accent for links
*/
a {
  color: #6ea8fe;
  position: relative;
}

a:hover {
  color: var(--cyberpunk-cyan);
  text-shadow: 0 0 5px rgba(0, 255, 255, 0.3);
}

/* 
  Subtle cyberpunk background pattern
  Very subtle grid pattern for depth
*/
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(0, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
  z-index: -1;
}

/* 
  Enhanced scrollbar with cyberpunk colors
*/
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--cyberpunk-cyan), var(--cyberpunk-blue));
  border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--cyberpunk-blue), var(--cyberpunk-purple));
}

/* 
  Cyberpunk accent for form focus states
*/
.form-control:focus {
  background-color: #353535;
  border-color: var(--cyberpunk-cyan);
  color: #ffffff;
  box-shadow: 0 0 10px rgba(0, 255, 255, 0.2);
}

/* 
  Subtle cyberpunk accent for table hover
*/
.table-hover tbody tr:hover {
  background-color: rgba(0, 255, 255, 0.05);
  color: #ffffff;
}

/* 
  Professional cyberpunk footer accent
*/
footer {
  position: relative;
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyberpunk-cyan), transparent);
}

/* 
  Responsive adjustments for cyberpunk effects
*/
@media (max-width: 768px) {
  .section-header::after {
    width: 40px;
  }
  
  .card:hover {
    box-shadow: 0 4px 15px rgba(0, 255, 255, 0.1);
  }
  
  body::before {
    background-size: 30px 30px;
  }
}