/* Modern Design System for Random Things To Do */

/* CSS Custom Properties */
:root {
  /* Color Palette */
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --secondary: #64748b;
  --accent: #f59e0b;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #06b6d4;
  
  /* Neutral Colors */
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
}

/* Import Modern Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600&display=swap');

/* Reset and Base Styles */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.6;
  color: var(--gray-800);
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
  margin: 0;
  padding: 0;
  min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 var(--space-md) 0;
  color: var(--gray-900);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

p {
  margin: 0 0 var(--space-md) 0;
  color: var(--gray-700);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-dark);
}

/* Modern Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Modern Navbar */
.navbar {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-md) 0;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar-brand {
  display: flex;
  align-items: center;
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--gray-900);
  text-decoration: none;
}

.navbar-brand img {
  height: 60px;
  margin-right: var(--space-md);
  border-radius: 50%;
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.navbar-brand img:hover {
  transform: scale(1.05);
}

.navbar-nav {
  display: flex;
  align-items: center;
  margin-left: auto;
}

/* Search Container */
.search-container {
  display: flex;
  align-items: center;
  position: relative;
}

/* Mobile Search Toggle Button */
.search-toggle-btn {
  display: none;
  background: var(--primary);
  border: none;
  border-radius: var(--radius-lg);
  padding: var(--space-sm);
  color: var(--white);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.search-toggle-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.search-toggle-btn svg {
  width: 20px;
  height: 20px;
}

/* Search Input Wrapper */
.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  transition: all var(--transition-normal);
}

.search-icon {
  position: absolute;
  left: var(--space-md);
  color: var(--gray-400);
  pointer-events: none;
  z-index: 1;
}

.search-input {
  background: var(--white);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-sm) var(--space-md) var(--space-sm) calc(var(--space-md) + 20px);
  font-size: 0.875rem;
  color: var(--gray-700);
  width: 280px;
  transition: all var(--transition-fast);
  font-family: var(--font-sans);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
  width: 320px;
}

.search-input:focus ~ .search-icon {
  color: var(--primary);
}

.search-input::placeholder {
  color: var(--gray-400);
}

/* Responsive Design */
@media (max-width: 768px) {
  .search-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .search-input-wrapper {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--space-sm);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    z-index: 1000;
  }
  
  .search-input-wrapper.expanded {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  
  .search-input {
    width: 280px;
    box-shadow: var(--shadow-lg);
  }
  
  .search-input:focus {
    width: 280px;
  }
  
  .navbar-brand span {
    font-size: 1.2rem;
  }
  
  .navbar-brand img {
    height: 50px;
    margin-right: var(--space-sm);
  }
}

@media (max-width: 480px) {
  .search-input {
    width: 250px;
  }
  
  .search-input:focus {
    width: 250px;
  }
  
  .navbar-brand span {
    font-size: 1rem;
  }
  
  .navbar-brand img {
    height: 45px;
  }
}

/* Modern Cards */
.card {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: all var(--transition-normal);
}

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

.card-body {
  padding: var(--space-xl);
}

.card-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--gray-900);
}

.card-text {
  color: var(--gray-600);
  line-height: 1.7;
}

/* Modern Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--white);
  color: var(--gray-700);
  border: 2px solid var(--gray-200);
}

.btn-secondary:hover {
  background: var(--gray-50);
  border-color: var(--gray-300);
  color: var(--gray-800);
}

.btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: 1.125rem;
}









/* Main Content Layout */
.main-content {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-2xl);
  align-items: start;
}

.content-section {
  max-width: 800px;
}

@media (max-width: 1024px) {
  .main-content {
    grid-template-columns: 1fr;
  }
}



/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-sm);
  }
  
  .content-box {
    padding: var(--space-lg);
    margin: var(--space-md) 0;
  }
  
  .content-box h1 {
    font-size: 2rem;
  }
  
  .content-box .content-text {
    font-size: 1.25rem;
    padding: var(--space-md);
  }
  
  .nav-buttons {
    flex-direction: column;
  }
  
  .nav-btn {
    text-align: center;
    justify-content: center;
  }
  
  .page-links-grid {
    grid-template-columns: 1fr;
  }
  
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
  .navbar-brand {
    font-size: 1.25rem;
  }
  
  .navbar-brand img {
    height: 32px;
  }
  
  .content-box {
    padding: var(--space-md);
  }
  
  .content-box h1 {
    font-size: 1.75rem;
  }
  
  .content-box .content-text {
    font-size: 1.125rem;
  }
}

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

.mt-0 { margin-top: 0; }
.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-0 { margin-bottom: 0; }
.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); }

.p-0 { padding: 0; }
.p-1 { padding: var(--space-xs); }
.p-2 { padding: var(--space-sm); }
.p-3 { padding: var(--space-md); }
.p-4 { padding: var(--space-lg); }
.p-5 { padding: var(--space-xl); }

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

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

/* Form Controls */
.form-control {
  display: block;
  width: 100%;
  padding: var(--space-md);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--gray-700);
  background-color: var(--white);
  background-clip: padding-box;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  font-family: var(--font-sans);
}

.form-control:focus {
  color: var(--gray-700);
  background-color: var(--white);
  border-color: var(--primary);
  outline: 0;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-control::placeholder {
  color: var(--gray-400);
  opacity: 1;
}

/* Loading States */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xl);
  color: var(--gray-500);
}

.loading::after {
  content: '';
  width: 20px;
  height: 20px;
  border: 2px solid var(--gray-300);
  border-top: 2px solid var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-left: var(--space-sm);
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Enhanced Content Box */
.content-box {
  position: relative;
  background: var(--white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  padding: var(--space-2xl);
  margin: var(--space-xl) 0;
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.content-box:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl), 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.content-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 50%, var(--success) 100%);
}

.content-box h1 {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-lg);
  text-align: center;
}

.content-box .content-text {
  font-size: 1.5rem;
  line-height: 1.8;
  color: var(--gray-700);
  margin: var(--space-xl) 0;
  padding: var(--space-lg);
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--primary);
  text-align: center;
  font-weight: 500;
}

/* Enhanced Navigation Buttons */
.nav-buttons {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-xl);
  justify-content: center;
}

.nav-btn {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-xl);
  font-size: 1.25rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-lg);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  min-width: 140px;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.nav-btn::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;
}

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

.nav-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  color: var(--white);
}

.nav-btn.next::after {
  content: '→';
  font-size: 1.5rem;
  transition: transform var(--transition-fast);
}

.nav-btn.next:hover::after {
  transform: translateX(4px);
}

/* Enhanced List Box */
.list-box {
  background: var(--white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  margin: var(--space-xl) 0;
  transition: all var(--transition-normal);
  border: 1px solid var(--gray-200);
  position: relative;
}

.list-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 50%, var(--success) 100%);
}

.list-box:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl), 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.list-box-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  padding: var(--space-xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.list-box-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  opacity: 0.3;
}

.list-box-header h2 {
  color: var(--white) !important;
  margin: 0;
  font-size: 2rem;
  font-weight: 700;
  position: relative;
  z-index: 1;
}

.list-box-header h1,
.list-box-header h3,
.list-box-header h4,
.list-box-header h5,
.list-box-header h6 {
  color: var(--white) !important;
}

.list-box-content {
  padding: var(--space-xl);
}

.list-box-description {
  color: var(--gray-600);
  font-size: 1.125rem;
  line-height: 1.7;
  margin-bottom: var(--space-lg);
  text-align: center;
}

.list-box-image {
  width: auto;
  max-width: 400px;
  height: auto;
  border-radius: var(--radius-xl);
  margin: var(--space-lg) auto;
  display: block;
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-normal);
  object-fit: contain;
}

.list-box-image:hover {
  transform: scale(1.02);
}

/* Enhanced Page Links */
.page-links {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--space-xl);
  margin: var(--space-lg) 0;
  transition: all var(--transition-normal);
  border: 1px solid var(--gray-200);
  position: relative;
  overflow: hidden;
}

.page-links::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 50%, var(--success) 100%);
}

.page-links:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-xl);
}

.page-links h3 {
  color: var(--gray-900);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--gray-200);
  position: relative;
}

.page-links h3::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
}

/* Search Results Counter */
.search-results-counter {
  background: var(--primary);
  color: var(--white);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 500;
  display: inline-block;
  margin-bottom: var(--space-lg);
  box-shadow: var(--shadow-sm);
}

.page-links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
  transition: all var(--transition-normal);
}

.page-link-item {
  background: var(--gray-50);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  transition: all var(--transition-normal);
  text-decoration: none;
  color: var(--gray-700);
  position: relative;
  overflow: hidden;
  animation: fadeIn 0.3s ease-out;
}

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

.page-link-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary);
  transform: scaleY(0);
  transition: transform var(--transition-normal);
}

.page-link-item:hover::before {
  transform: scaleY(1);
}

.page-link-item:hover {
  background: var(--white);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.page-link-item strong {
  display: block;
  margin-bottom: var(--space-sm);
  font-size: 1.125rem;
  font-weight: 600;
}

/* No Results Message */
.no-results {
  text-align: center;
  padding: var(--space-2xl);
  color: var(--gray-500);
}

.no-results p:first-child {
  font-size: 1.125rem;
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.no-results p:last-child {
  font-size: 0.875rem;
  color: var(--gray-400);
}

/* Enhanced Footer */
.footer {
  background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
  color: var(--gray-300);
  padding: var(--space-2xl) 0;
  margin-top: var(--space-3xl);
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 50%, var(--success) 100%);
}

.footer-content {
  text-align: center;
  position: relative;
  z-index: 1;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  margin: var(--space-lg) 0;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--gray-400);
  transition: color var(--transition-fast);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.footer-links a:hover {
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
}

/* Enhanced Form in Footer */
.footer form {
  background: rgba(255, 255, 255, 0.05);
  padding: var(--space-xl);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
}

.footer h3 {
  color: var(--white);
  margin-bottom: var(--space-lg);
  font-size: 1.5rem;
  font-weight: 600;
}

.footer .form-control {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--white);
}

.footer .form-control:focus {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.footer .form-control::placeholder {
  color: var(--gray-400);
}

.footer .btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border: none;
  font-weight: 600;
  padding: var(--space-md) var(--space-xl);
}

/* Additional Enhancements */
.app-container {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
}

/* Smooth scrolling for the entire page */
html {
  scroll-behavior: smooth;
}

/* Enhanced focus states for accessibility */
*:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

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

::-webkit-scrollbar-track {
  background: var(--gray-100);
}

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

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

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

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