/* ============================================
   Slick CSS Overhaul for Project Site
   Modern, responsive, and visually appealing
   ============================================ */

/* Base Styles & Variables */
:root {
  /* Color Palette */
  --primary: #4361ee;
  --primary-dark: #3a56d4;
  --secondary: #7209b7;
  --accent: #f72585;
  --light: #f8f9fa;
  --dark: #212529;
  --gray: #6c757d;
  --light-gray: #e9ecef;
  --success: #4cc9f0;
  --warning: #ffbe0b;
  
  /* Typography */
  --font-main: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-heading: 'Montserrat', 'Segoe UI', sans-serif;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-main);
  line-height: 1.6;
  color: var(--dark);
  background-color: #fefefe;
  overflow-x: hidden;
}

/* Typography Enhancements */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  color: var(--dark);
}

h1 {
  font-size: 2.8rem;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-sm);
}

h2 {
  font-size: 2.2rem;
  position: relative;
  display: inline-block;
  margin-bottom: var(--space-lg);
}

h2:after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 70px;
  height: 4px;
  background: linear-gradient(to right, var(--primary), var(--accent));
  border-radius: 2px;
}

h3 {
  font-size: 1.5rem;
  color: var(--primary-dark);
}

p {
  margin-bottom: var(--space-md);
  color: var(--gray);
  font-size: 1.05rem;
}

/* Layout Improvements */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Header Styling */
header {
  background: linear-gradient(135deg, var(--dark) 0%, #343a40 100%);
  color: white;
  padding: var(--space-lg) 0;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

header:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 Z" fill="rgba(255,255,255,0.05)"/></svg>');
  background-size: cover;
}

header .container {
  position: relative;
  z-index: 1;
}

/* Main Content Area */
main {
  padding: var(--space-xl) 0;
  background-color: white;
}

/* Section Styling */
section {
  margin-bottom: var(--space-xl);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  background: white;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

section:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

/* Form Improvements */
form {
  background: linear-gradient(to bottom right, white, var(--light-gray));
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 600;
  color: var(--dark);
}

input, textarea, select {
  width: 100%;
  padding: 12px 16px;
  margin-bottom: var(--space-md);
  border: 2px solid var(--light-gray);
  border-radius: var(--radius-sm);
  font-family: var(--font-main);
  font-size: 1rem;
  transition: all var(--transition-fast);
  background-color: white;
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.2);
}

/* Button Overhaul */
button, .btn {
  display: inline-block;
  background: linear-gradient(to right, var(--primary), var(--secondary));
  color: white;
  border: none;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  text-align: center;
  letter-spacing: 0.5px;
  position: relative;
  overflow: hidden;
  z-index: 1;
  box-shadow: var(--shadow-sm);
}

button:before, .btn:before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, var(--secondary), var(--primary));
  transition: left var(--transition-normal);
  z-index: -1;
}

button:hover, .btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

button:hover:before, .btn:hover:before {
  left: 0;
}

button:active, .btn:active {
  transform: translateY(0);
}

/* Table Enhancements */
table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

th {
  background: linear-gradient(to right, var(--primary), var(--primary-dark));
  color: white;
  text-align: left;
  padding: 16px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--light-gray);
  transition: background-color var(--transition-fast);
}

tr:nth-child(even) {
  background-color: rgba(67, 97, 238, 0.03);
}

tr:hover td {
  background-color: rgba(67, 97, 238, 0.08);
}

/* List Improvements */
ul, ol {
  margin-left: var(--space-lg);
  margin-bottom: var(--space-md);
}

li {
  margin-bottom: var(--space-xs);
  padding-left: var(--space-xs);
}

/* Footer Styling */
footer {
  background: linear-gradient(135deg, var(--dark) 0%, #2d3436 100%);
  color: white;
  padding: var(--space-lg) 0;
  text-align: center;
}

footer p {
  color: rgba(255, 255, 255, 0.8);
}

/* Image Styling */
img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  transition: transform var(--transition-normal);
}

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

/* Link Styling */
a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
  font-weight: 500;
}

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

/* Utility Classes */
.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.mt-1 { margin-top: var(--space-xs); }
.mt-2 { margin-top: var(--space-sm); }
.mt-3 { margin-top: var(--space-md); }
.mt-4 { margin-top: var(--space-lg); }
.mt-5 { margin-top: var(--space-xl); }

.mb-1 { margin-bottom: var(--space-xs); }
.mb-2 { margin-bottom: var(--space-sm); }
.mb-3 { margin-bottom: var(--space-md); }
.mb-4 { margin-bottom: var(--space-lg); }
.mb-5 { margin-bottom: var(--space-xl); }

.highlight {
  background: linear-gradient(120deg, rgba(67, 97, 238, 0.15) 0%, rgba(114, 9, 183, 0.15) 100%);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 500;
}

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

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

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}

.slide-in-left {
  animation: slideInLeft 0.5s ease forwards;
}

/* Responsive Design */
@media (max-width: 992px) {
  h1 { font-size: 2.4rem; }
  h2 { font-size: 1.9rem; }
  
  section {
    padding: var(--space-md);
  }
}

@media (max-width: 768px) {
  :root {
    --space-lg: 2rem;
    --space-xl: 3rem;
  }
  
  h1 { font-size: 2rem; }
  h2 { font-size: 1.7rem; }
  
  header, main, footer {
    padding-left: var(--space-sm);
    padding-right: var(--space-sm);
  }
  
  table {
    display: block;
    overflow-x: auto;
  }
}

@media (max-width: 576px) {
  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.5rem; }
  
  button, .btn {
    width: 100%;
    margin-bottom: var(--space-xs);
  }
  
  form {
    padding: var(--space-md);
  }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--light-gray);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(to bottom, var(--primary), var(--secondary));
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(to bottom, var(--primary-dark), var(--secondary));
}

/* Focus Styles for Accessibility */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}