/* WebDevIn_100Days - Main Styles */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* Color scheme and variables */
:root {
  /* Brand colors */
  --primary-color: #6366f1;
  --primary-hover: #4f46e5;
  --primary-light: #e0e7ff;
  
  /* Accent colors */
  --secondary-color: #10b981;
  --secondary-hover: #059669;
  --secondary-light: #d1fae5;
  
  /* Grays */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-accent: #f1f5f9;
  
  /* Dark Mode Colors */
  --dark-bg-primary: #0f172a;
  --dark-bg-secondary: #1e293b;
  --dark-bg-accent: #334155;
  --dark-text-primary: #f1f5f9;
  --dark-text-secondary: #cbd5e1;
  
  /* Text Colors */
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-accent: #475569;
  
  /* 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;
  
  /* Section padding */
  --section-padding: 4rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* 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);
  
  /* Typography */
  --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow-x: hidden;
}

/* Dark theme support */
[data-theme="dark"] {
  --bg-primary: var(--dark-bg-primary);
  --bg-secondary: var(--dark-bg-secondary);
  --bg-accent: var(--dark-bg-accent);
  --text-primary: var(--dark-text-primary);
  --text-secondary: var(--dark-text-secondary);
}

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

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-md);
  }
}

/* Button styles */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-primary);
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.5;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
  outline: none;
  position: relative;
  overflow: hidden;
}

.btn:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
  background: var(--secondary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
}

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

/* Card components */
.card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all 0.3s ease;
  border: 1px solid var(--gray-200);
}

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

.card-header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--gray-200);
}

.card-content {
  padding: var(--space-lg);
}

.card-footer {
  padding: var(--space-lg);
  border-top: 1px solid var(--gray-200);
  background: var(--bg-secondary);
}

/* Typography */
.heading-1 {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

.heading-2 {
  font-size: 2.25rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
}

.heading-3 {
  font-size: 1.875rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
}

.text-large {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

.text-base {
  font-size: 1rem;
  color: var(--text-secondary);
}

.text-small {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Grid layout system */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid-cols-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-cols-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid-cols-4,
  .grid-cols-3,
  .grid-cols-2 { 
    grid-template-columns: repeat(1, 1fr); 
  }
}

/* Flexbox Utilities */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* Spacing Utilities */
.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }
.p-xl { padding: var(--space-xl); }

.m-sm { margin: var(--space-sm); }
.m-md { margin: var(--space-md); }
.m-lg { margin: var(--space-lg); }
.m-xl { margin: var(--space-xl); }

/* Text Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Form elements */
.input {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-family: var(--font-primary);
  font-size: 0.875rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  background: var(--bg-primary);
  color: var(--text-primary);
}

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

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

/* Badge Component */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.badge-primary {
  background: var(--primary-light);
  color: var(--primary-color);
}

.badge-secondary {
  background: var(--secondary-light);
  color: var(--secondary-color);
}

/* Animation Utilities */
.animate-fade-in {
  animation: fadeIn 0.5s ease-in;
}

.animate-slide-up {
  animation: slideUp 0.6s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Loading States */
.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* About the Challenge Section */
.about-challenge-section {
  padding: var(--section-padding) 0;
  background: linear-gradient(135deg, var(--dark-bg-primary) 0%, var(--dark-bg-secondary) 100%);
  color: var(--dark-text-primary);
  position: relative;
  overflow: hidden;
}

[data-theme="light"] .about-challenge-section {
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  color: var(--text-primary);
}

.about-challenge-section::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="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.3;
}

[data-theme="light"] .about-challenge-section::before {
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(0,0,0,0.05)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
}

.about-challenge-header {
  text-align: center;
  margin-bottom: 4rem;
  position: relative;
  z-index: 1;
}

.about-challenge-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #ff0080 0%, #7928ca 50%, #ff0080 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-align: center;
}

.challenge-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
  position: relative;
  z-index: 1;
}

.challenge-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 1rem;
  padding: 2rem;
  text-align: center;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

[data-theme="light"] .challenge-card {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: var(--shadow-md);
}

.challenge-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.challenge-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

[data-theme="light"] .challenge-card:hover {
  border-color: rgba(0, 0, 0, 0.2);
  box-shadow: var(--shadow-xl);
}

.challenge-card:hover::before {
  opacity: 1;
}

.challenge-icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
}

.challenge-icon svg {
  width: 2rem;
  height: 2rem;
}

.challenge-card-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--dark-text-primary);
}

[data-theme="light"] .challenge-card-title {
  color: var(--text-primary);
}

.challenge-card-description {
  color: var(--dark-text-secondary);
  line-height: 1.6;
  font-size: 1rem;
}

[data-theme="light"] .challenge-card-description {
  color: var(--text-secondary);
}

.challenge-stats {
  text-align: center;
  position: relative;
  z-index: 1;
  margin-bottom: 4rem;
}

.challenge-stats-title {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 2rem;
  color: var(--dark-text-primary);
}

[data-theme="light"] .challenge-stats-title {
  color: var(--text-primary);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  max-width: 1000px;
  margin: 0 auto;
}

.stat-item {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 1rem;
  padding: 2rem 1rem;
  text-align: center;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

[data-theme="light"] .stat-item {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: var(--shadow-md);
}

.stat-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.stat-item:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

[data-theme="light"] .stat-item:hover {
  border-color: rgba(0, 0, 0, 0.2);
  box-shadow: var(--shadow-xl);
}

.stat-item:hover::before {
  opacity: 1;
}

.stat-number {
  display: block;
  font-size: 3rem;
  font-weight: 700;
  background: linear-gradient(135deg, #ff0080 0%, #7928ca 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
  position: relative;
  z-index: 1;
}

.stat-label {
  color: var(--dark-text-secondary);
  font-size: 1rem;
  font-weight: 500;
  position: relative;
  z-index: 1;
}

[data-theme="light"] .stat-label {
  color: var(--text-secondary);
}

/* Responsive Design for About Challenge */
@media (max-width: 768px) {
  .about-challenge-title {
    font-size: 2.5rem;
  }
  
  .challenge-cards {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-bottom: 3rem;
  }
  
  .challenge-card {
    padding: 1.5rem;
  }
  
  .challenge-stats-title {
    font-size: 1.5rem;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
  
  .stat-item {
    padding: 1.5rem 1rem;
  }
  
  .stat-number {
    font-size: 2.5rem;
  }
}

@media (max-width: 480px) {
  .about-challenge-title {
    font-size: 2rem;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }
  
  .stat-item {
    padding: 1rem 0.5rem;
  }
  
  .stat-number {
    font-size: 2rem;
  }
  
  .stat-label {
    font-size: 0.875rem;
  }
}

/* Modern Navigation Styles */
.modern-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 1000;
  transition: all 0.3s ease;
}

[data-theme="light"] .modern-nav {
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--dark-text-primary);
  font-size: 1.25rem;
  font-weight: 600;
  transition: color 0.3s ease;
}

[data-theme="light"] .nav-brand {
  color: var(--text-primary);
}

.nav-logo {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
}

.nav-links {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 2rem;
}

.nav-link {
  text-decoration: none;
  color: var(--dark-text-secondary);
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

[data-theme="light"] .nav-link {
  color: var(--text-secondary);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.theme-toggle {
  background: none;
  border: none;
  color: var(--dark-text-secondary);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

[data-theme="light"] .theme-toggle {
  color: var(--text-secondary);
}

.theme-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--primary-color);
  transform: rotate(180deg);
}

[data-theme="light"] .theme-toggle:hover {
  background: rgba(0, 0, 0, 0.1);
}

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

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  gap: 3px;
}

.mobile-menu-btn span {
  width: 25px;
  height: 3px;
  background: var(--dark-text-secondary);
  transition: all 0.3s ease;
  border-radius: 3px;
}

[data-theme="light"] .mobile-menu-btn span {
  background: var(--text-secondary);
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

.mobile-nav {
  display: none;
  background: rgba(15, 23, 42, 0.98);
  backdrop-filter: blur(10px);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1rem 0;
}

[data-theme="light"] .mobile-nav {
  background: rgba(255, 255, 255, 0.98);
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.mobile-nav.active {
  display: block;
}

.mobile-nav-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.mobile-nav-link {
  text-decoration: none;
  color: var(--dark-text-secondary);
  font-weight: 500;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  transition: all 0.3s ease;
}

[data-theme="light"] .mobile-nav-link {
  color: var(--text-secondary);
}

.mobile-nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--primary-color);
}

[data-theme="light"] .mobile-nav-link:hover {
  background: rgba(0, 0, 0, 0.1);
}

/* Modern Footer Styles */
.modern-footer {
  background: linear-gradient(135deg, var(--dark-bg-primary) 0%, var(--dark-bg-secondary) 100%);
  color: var(--dark-text-primary);
  padding: 3rem 0 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .modern-footer {
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  color: var(--text-primary);
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 2rem;
}

.footer-challenge {
  max-width: 400px;
}

.footer-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--dark-text-primary);
}

[data-theme="light"] .footer-title {
  color: var(--text-primary);
}

.footer-description {
  color: var(--dark-text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

[data-theme="light"] .footer-description {
  color: var(--text-secondary);
}

.footer-social {
  display: flex;
  gap: 1rem;
}

.social-link {
  color: var(--dark-text-secondary);
  transition: all 0.3s ease;
  padding: 0.5rem;
  border-radius: 50%;
}

[data-theme="light"] .social-link {
  color: var(--text-secondary);
}

.social-link:hover {
  color: var(--primary-color);
  transform: translateY(-2px);
}

.social-link svg {
  width: 20px;
  height: 20px;
}

.footer-section {
  display: flex;
  flex-direction: column;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-link {
  color: var(--dark-text-secondary);
  text-decoration: none;
  transition: color 0.3s ease;
}

[data-theme="light"] .footer-link {
  color: var(--text-secondary);
}

.footer-link:hover {
  color: var(--primary-color);
}

.tech-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.tech-badge {
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary-color);
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.75rem;
  font-weight: 500;
}

.footer-copyright {
  margin-top: auto;
}

.footer-copyright p {
  color: var(--dark-text-secondary);
  font-size: 0.875rem;
}

[data-theme="light"] .footer-copyright p {
  color: var(--text-secondary);
}

/* Scroll Progress Bar */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: rgba(255, 255, 255, 0.1);
  z-index: 1001;
}

.scroll-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  width: 0%;
  transition: width 0.1s ease;
}

/* Responsive Design for Navigation */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .mobile-menu-btn {
    display: flex;
  }
  
  .footer-main {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }
  
  .footer-social {
    justify-content: center;
  }
}

/* Hero Section Styles */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: linear-gradient(135deg, var(--dark-bg-primary) 0%, var(--dark-bg-secondary) 100%);
  color: var(--dark-text-primary);
  overflow: hidden;
}

[data-theme="light"] .hero-section {
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  color: var(--text-primary);
}

.hero-bg {
  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="grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.5;
}

[data-theme="light"] .hero-bg {
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="rgba(0,0,0,0.03)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
}

.hero-content {
  text-align: center;
  max-width: 800px;
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: 4rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--dark-text-secondary);
  margin-bottom: 2.5rem;
  line-height: 1.6;
}

[data-theme="light"] .hero-subtitle {
  color: var(--text-secondary);
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Search Section Styles */
.search-section {
  padding: 3rem 0;
  background: var(--bg-secondary);
}

[data-theme="dark"] .search-section {
  background: var(--dark-bg-secondary);
}

.search-container {
  max-width: 600px;
  margin: 0 auto;
}

.search-form {
  display: flex;
  gap: 0.5rem;
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: 0.5rem;
  box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .search-form {
  background: var(--dark-bg-primary);
}

.search-input {
  flex: 1;
  border: none;
  background: transparent;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  color: var(--text-primary);
  outline: none;
}

.search-input::placeholder {
  color: var(--text-secondary);
}

.search-btn {
  padding: 0.75rem 1.5rem;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.search-btn:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

/* Projects Section Styles */
.projects-section {
  padding: 4rem 0;
  background: var(--bg-primary);
}

[data-theme="dark"] .projects-section {
  background: var(--dark-bg-primary);
}

.projects-header {
  text-align: center;
  margin-bottom: 3rem;
}

.projects-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.projects-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Filter Tabs */
.filter-tabs {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-tab {
  padding: 0.75rem 1.5rem;
  background: transparent;
  border: 2px solid var(--gray-300);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 500;
}

[data-theme="dark"] .filter-tab {
  border-color: var(--gray-600);
  color: var(--dark-text-secondary);
}

.filter-tab:hover,
.filter-tab.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Projects Table Styles */
.projects-table-container {
  overflow-x: auto;
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  margin-bottom: 2rem;
}

[data-theme="dark"] .projects-table-container {
  background: var(--dark-bg-secondary);
}

.projects-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.projects-table th {
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: 1rem;
  text-align: left;
  font-weight: 600;
  border-bottom: 2px solid var(--gray-200);
  position: sticky;
  top: 0;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.2s ease;
}

[data-theme="dark"] .projects-table th {
  background: var(--dark-bg-accent);
  color: var(--dark-text-primary);
  border-bottom-color: var(--gray-600);
}

.projects-table th:hover {
  background: var(--gray-100);
}

[data-theme="dark"] .projects-table th:hover {
  background: var(--gray-700);
}

.sortable {
  cursor: pointer;
  position: relative;
}

.sort-icon {
  margin-left: 0.5rem;
  opacity: 0.5;
  transition: opacity 0.2s ease;
}

.sortable:hover .sort-icon {
  opacity: 1;
}

.projects-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--gray-200);
  vertical-align: top;
}

[data-theme="dark"] .projects-table td {
  border-bottom-color: var(--gray-700);
}

.table-row:hover {
  background: var(--gray-50);
}

[data-theme="dark"] .table-row:hover {
  background: var(--gray-800);
}

.day-cell {
  font-weight: 600;
  color: var(--primary-color);
  white-space: nowrap;
}

.name-cell {
  min-width: 250px;
}

.project-name {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.project-desc {
  color: var(--text-secondary);
  font-size: 0.8rem;
  line-height: 1.4;
}

.category-cell {
  white-space: nowrap;
}

.category-badge {
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: capitalize;
}

.category-basic {
  background: rgba(34, 197, 94, 0.1);
  color: #059669;
}

.category-games {
  background: rgba(236, 72, 153, 0.1);
  color: #be185d;
}

.category-utilities {
  background: rgba(59, 130, 246, 0.1);
  color: #1d4ed8;
}

.category-education {
  background: rgba(245, 101, 101, 0.1);
  color: #ffaa00;
}
.category-productivity {
  background: rgba(130, 245, 101, 0.1);
  color: #f700b5;
}
.category-entertainment{
  background: rgba(101, 185, 245, 0.1);
  color: #ae00ff;
}
.category-creativity{
  background: rgba(101, 149, 245, 0.1);
  color: #1aff00;
}

.tech-cell {
  min-width: 150px;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.tech-tag-small {
  background: var(--primary-light);
  color: var(--primary-color);
  padding: 0.125rem 0.5rem;
  border-radius: 0.75rem;
  font-size: 0.7rem;
  font-weight: 500;
}

.features-cell {
  min-width: 180px;
}

.features-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.feature-tag {
  background: var(--gray-100);
  color: var(--gray-700);
  padding: 0.125rem 0.5rem;
  border-radius: 0.75rem;
  font-size: 0.7rem;
}

[data-theme="dark"] .feature-tag {
  background: var(--gray-700);
  color: var(--gray-300);
}

.feature-more {
  color: var(--text-secondary);
  font-size: 0.7rem;
  font-style: italic;
}

.demo-cell {
  white-space: nowrap;
}

.demo-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--primary-color);
  color: white;
  text-decoration: none;
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

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

/* Pagination Styles */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2rem;
}

.pagination-btn {
  padding: 0.5rem 1rem;
  background: var(--bg-primary);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s ease;
  font-weight: 500;
}

[data-theme="dark"] .pagination-btn {
  background: var(--dark-bg-secondary);
  border-color: var(--gray-600);
  color: var(--dark-text-primary);
}

.pagination-btn:hover:not(:disabled) {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
}

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

.pagination-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.pagination-info {
  color: var(--text-secondary);
  font-size: 0.875rem;
  padding: 0.5rem;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  display: none;
}

.empty-state.show {
  display: block;
}

.empty-icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1.5rem;
  color: var(--gray-400);
}

.empty-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.empty-description {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Scroll to Top Button */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 3rem;
  height: 3rem;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  transition: all 0.3s ease;
  opacity: 0;
  visibility: hidden;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.scroll-top svg {
  width: 1.25rem;
  height: 1.25rem;
}

/* Responsive Design for Home Page */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .projects-title {
    font-size: 2rem;
  }
  
  .filter-tabs {
    gap: 0.25rem;
  }
  
  .filter-tab {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
  }
  
  .projects-table {
    font-size: 0.8rem;
  }
  
  .projects-table th,
  .projects-table td {
    padding: 0.75rem 0.5rem;
  }
  
  .name-cell {
    min-width: 200px;
  }
  
  .tech-cell,
  .features-cell {
    min-width: 120px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .search-form {
    flex-direction: column;
  }
  
  .projects-table {
    font-size: 0.75rem;
  }
  
  .projects-table th,
  .projects-table td {
    padding: 0.5rem 0.25rem;
  }
  
  .scroll-top {
    bottom: 1rem;
    right: 1rem;
    width: 2.5rem;
    height: 2.5rem;
  }
}