/* Custom CSS Variables for Theme */
:root {
  --primary-color: #007bff;
  --secondary-color: #6c757d;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --warning-color: #ffc107;
  --info-color: #17a2b8;
  --light-color: #f8f9fa;
  --dark-color: #343a40;
  --white: #ffffff;
  --black: #000000;
}

[data-theme="dark"] {
  --bs-body-bg: #1a1a1a;
  --bs-body-color: #ffffff;
  --bs-card-bg: #2d2d2d;
  --bs-navbar-bg: #212529;
}

/* Global Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  padding-top: 76px; /* Account for fixed navbar */
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
}

.display-1, .display-2, .display-3, .display-4, .display-5 {
  font-weight: 700;
}

/* Navigation */
.navbar {
  backdrop-filter: blur(10px);
  background: rgba(33, 37, 41, 0.95) !important;
  transition: all 0.3s ease;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.5rem;
}

.nav-link {
  font-weight: 500;
  position: relative;
  transition: color 0.3s ease;
}

.nav-link.active {
  color: var(--primary-color) !important;
}

.nav-link:hover {
  color: var(--primary-color) !important;
}

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-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 1000 1000"><polygon fill="rgba(255,255,255,0.05)" points="0,1000 1000,0 1000,1000"/></svg>');
  background-size: cover;
}

.hero-section .container {
  position: relative;
  z-index: 2;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
}

.animate-bounce {
  animation: bounce 2s infinite;
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.3s ease;
}

.animate-bounce:hover {
  color: white;
}

@keyframes bounce {
  0%, 20%, 53%, 80%, 100% {
    transform: translate3d(0, 0, 0);
  }
  40%, 43% {
    transform: translate3d(0, -20px, 0);
  }
  70% {
    transform: translate3d(0, -10px, 0);
  }
  90% {
    transform: translate3d(0, -4px, 0);
  }
}

/* Skills Visualization */
.skills-visualization {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  max-width: 400px;
  margin: 0 auto;
}

.skill-item {
  text-align: center;
  padding: 1rem;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease;
}

.skill-item:hover {
  transform: translateY(-5px);
}

/* Cards */
.card {
  border: none;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
  border-radius: 10px;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

/* Project Cards */
.project-card {
  position: relative;
  overflow: hidden;
}

.card-img-container {
  position: relative;
  overflow: hidden;
  height: 200px;
}

.card-img-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.card-img-overlay {
  background: rgba(0, 0, 0, 0.7);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.project-card:hover .card-img-overlay {
  opacity: 1;
}

.project-card:hover .card-img-container img {
  transform: scale(1.1);
}

/* Tech Stack Badges */
.badge {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.5em 0.75em;
}

/* Technology Stats */
.tech-stats .tech-item {
  transition: transform 0.3s ease;
}

.tech-stats .tech-item:hover {
  transform: scale(1.05);
}

.tech-circle {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--primary-color);
  color: white;
  font-size: 1.2rem;
}

/* Contact Form */
.contact-form {
  background: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.form-control {
  border: 2px solid #e9ecef;
  border-radius: 8px;
  padding: 0.75rem 1rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

/* Contact Info */
.contact-item {
  padding: 1rem;
  border-radius: 8px;
  transition: background-color 0.3s ease;
}

.contact-item:hover {
  background-color: rgba(0, 123, 255, 0.05);
}

.contact-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 123, 255, 0.1);
  border-radius: 50%;
}

/* Resume Styles */
.resume-preview {
  background: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  margin-bottom: 2rem;
}

.resume-header {
  border-bottom: 2px solid var(--primary-color);
}

.resume-section {
  page-break-inside: avoid;
}

.experience-item, .project-item {
  border-left: 3px solid var(--primary-color);
  padding-left: 1rem;
  margin-left: 0.5rem;
}

/* Social Links */
.social-links a {
  display: inline-block;
  width: 40px;
  height: 40px;
  line-height: 40px;
  text-align: center;
  border-radius: 50%;
  transition: all 0.3s ease;
  text-decoration: none;
}

.social-links a:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* Footer */
footer {
  background: #212529 !important;
}

footer .social-links a {
  font-size: 1.2rem;
  transition: color 0.3s ease;
}

footer .social-links a:hover {
  color: var(--primary-color) !important;
}

/* Buttons */
.btn {
  border-radius: 8px;
  font-weight: 500;
  padding: 0.75rem 1.5rem;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.btn-primary {
  background: linear-gradient(45deg, var(--primary-color), #0056b3);
  border-color: var(--primary-color);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 123, 255, 0.4);
}

.btn-outline-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 123, 255, 0.3);
}

/* Error Pages */
.error-content {
  padding: 3rem 0;
}

.error-icon {
  opacity: 0.8;
}

/* Dark Theme Styles */
[data-theme="dark"] {
  background-color: #1a1a1a;
  color: #ffffff;
}

[data-theme="dark"] .card {
  background-color: #2d2d2d;
  color: #ffffff;
}

[data-theme="dark"] .navbar {
  background: rgba(13, 17, 23, 0.95) !important;
}

[data-theme="dark"] .bg-light {
  background-color: #2d2d2d !important;
}

[data-theme="dark"] .text-muted {
  color: #adb5bd !important;
}

[data-theme="dark"] .form-control {
  background-color: #2d2d2d;
  border-color: #495057;
  color: #ffffff;
}

[data-theme="dark"] .form-control:focus {
  background-color: #2d2d2d;
  border-color: var(--primary-color);
  color: #ffffff;
}

[data-theme="dark"] .resume-preview {
  background-color: #2d2d2d;
  color: #ffffff;
}

/* Contact Form Dark Theme Styles */
[data-theme="dark"] .contact-form {
  background-color: #2d2d2d !important;
  color: #ffffff !important;
}

[data-theme="dark"] .contact-form h3 {
  color: #ffffff !important;
}

[data-theme="dark"] .contact-form label {
  color: #ffffff !important;
}

[data-theme="dark"] .contact-form input[type="text"],
[data-theme="dark"] .contact-form input[type="email"],
[data-theme="dark"] .contact-form textarea {
  background-color: #1a1a1a !important;
  border-color: #495057 !important;
  color: #ffffff !important;
}

[data-theme="dark"] .contact-form input[type="text"]:focus,
[data-theme="dark"] .contact-form input[type="email"]:focus,
[data-theme="dark"] .contact-form textarea:focus {
  background-color: #1a1a1a !important;
  border-color: var(--primary-color) !important;
  color: #ffffff !important;
  box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25) !important;
}

[data-theme="dark"] .contact-form input::placeholder,
[data-theme="dark"] .contact-form textarea::placeholder {
  color: #adb5bd !important;
}

/* Contact form container */
[data-theme="dark"] .contact-grid > div:first-child > div {
  background-color: #2d2d2d !important;
}

/* Contact sidebar dark theme */
[data-theme="dark"] .contact-sidebar h3,
[data-theme="dark"] .contact-sidebar h6 {
  color: #ffffff !important;
}

[data-theme="dark"] .contact-sidebar p {
  color: #adb5bd !important;
}

[data-theme="dark"] .contact-sidebar small {
  color: #6c757d !important;
}

/* FAQ Section Dark Theme */
[data-theme="dark"] .contact-faq-section {
  background-color: #1a1a1a !important;
}

[data-theme="dark"] .contact-faq-section h3,
[data-theme="dark"] .contact-faq-section h5 {
  color: #ffffff !important;
}

[data-theme="dark"] .contact-faq-section p {
  color: #adb5bd !important;
}

[data-theme="dark"] .contact-faq-section > div > div > div > div {
  background-color: #2d2d2d !important;
  border-color: #495057 !important;
}

/* CTA Section Dark Theme */
[data-theme="dark"] .contact-cta-section h3 {
  color: #ffffff !important;
}

[data-theme="dark"] .contact-cta-section p {
  color: #adb5bd !important;
}

/* Success/Error Messages Dark Theme */
[data-theme="dark"] .contact-form div[style*="background-color: #d1edff"] {
  background-color: #1a4c5c !important;
  border-color: #2e7d93 !important;
  color: #a3d4e6 !important;
}

[data-theme="dark"] .contact-form div[style*="background-color: #f8d7da"] {
  background-color: #5c1a1a !important;
  border-color: #932e2e !important;
  color: #e6a3a3 !important;
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-section {
    min-height: 70vh;
    text-align: center;
  }
  
  .skills-visualization {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-top: 2rem;
  }
  
  .navbar-brand {
    font-size: 1.2rem;
  }
  
  .display-3 {
    font-size: 2.5rem;
  }
  
  .btn-lg {
    padding: 0.6rem 1.2rem;
    font-size: 1rem;
  }
  
  /* Fix about preview section spacing on mobile */
  #about-preview .row {
    gap: 2rem 0;
  }
}

@media (max-width: 576px) {
  body {
    padding-top: 60px;
  }
  
  .hero-section {
    min-height: 60vh;
  }
  
  .skills-visualization {
    grid-template-columns: 1fr;
    margin-top: 2rem;
  }
  
  .display-3 {
    font-size: 2rem;
  }
  
  .contact-info .contact-item {
    text-align: center;
    margin-bottom: 1rem;
  }
  
  .resume-preview {
    padding: 1rem;
  }
}

/* Animation Classes */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.6s ease forwards;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  animation: slideInLeft 0.6s ease forwards;
}

@keyframes slideInLeft {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  animation: slideInRight 0.6s ease forwards;
}

@keyframes slideInRight {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Loading Animation */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .animate-bounce {
    animation: none;
  }
}

/* Focus Styles */
.btn:focus,
.form-control:focus,
.nav-link:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Print Styles */
@media print {
  .navbar,
  .scroll-indicator,
  footer,
  .btn {
    display: none !important;
  }
  
  body {
    padding-top: 0;
  }
  
  .resume-preview {
    box-shadow: none;
    padding: 0;
  }
}