/* Modern Portfolio CSS - Based on Reference Design */

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

:root {
  /* Colors */
  --bg-primary: #0a0a0f;
  --bg-secondary: #1a1a2e;
  --bg-card: #16213e;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-muted: #6b7280;
  --accent-primary: #6366f1;
  --accent-secondary: #8b5cf6;
  --accent-tertiary: #ec4899;
  --border-color: #2d3748;
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
  --gradient-secondary: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 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 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* Light Theme */
[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-card: #ffffff;
  --text-primary: #1a202c;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --border-color: #e2e8f0;
}

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

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 15, 0.9);
  backdrop-filter: blur(15px);
  border-bottom: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

[data-theme="light"] .header {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav {
  display: flex;
  gap: 2rem;
}

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

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width 0.3s ease;
}

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

.header-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.theme-toggle {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
}

.theme-toggle:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .theme-toggle:hover {
  background: rgba(0, 0, 0, 0.05);
}

.theme-toggle .sun-icon {
  display: none;
}

[data-theme="light"] .theme-toggle .sun-icon {
  display: block;
}

[data-theme="light"] .theme-toggle .moon-icon {
  display: none;
}

/* Mobile Menu */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--radius-md);
}

.mobile-menu-toggle:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .mobile-menu-toggle:hover {
  background: rgba(0, 0, 0, 0.05);
}

/* Main Content */
.main {
  margin-top: 80px;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  background: radial-gradient(circle at center, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
}

.hero-content {
  max-width: 800px;
  padding: 0 2rem;
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.1;
}

.hero-heading {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--accent-primary);
  margin-bottom: 1rem;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--font-size-2xl);
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-lg);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  font-size: var(--font-size-base);
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-secondary);
  border-color: var(--accent-primary);
}

.btn-github {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-color);
}

.btn-github:hover {
  background: var(--bg-secondary);
  border-color: var(--accent-primary);
}

/* Sections */
.section {
  padding: var(--spacing-2xl) 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-xl);
}



/* About Section */
.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-xl);
  align-items: start;
}

.about-text p {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.highlight {
  color: var(--accent-primary);
  font-weight: 600;
}

.profile-picture {
  display: flex;
  justify-content: center;
}

.profile-img {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  
  border: 4px solid var(--accent-primary);
  box-shadow: var(--shadow-lg);
}

/* Skills Section */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.skill-chip {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.3s ease;
}

.skill-chip:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-primary);
}

.skill-name {
  font-weight: 600;
  color: var(--text-primary);
}

.skill-level {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  background: var(--bg-secondary);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-md);
}

.resume-download {
  text-align: center;
  margin-top: var(--spacing-lg);
}

/* Projects Section */
.project-card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--spacing-lg);
}

.project-card.featured {
  position: relative;
}

.project-image {
  height: 400px;
  position: relative;
  overflow: hidden;
}

.project-screenshot {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.project-card:hover .project-screenshot {
  transform: scale(1.05);
}

.featured-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: var(--accent-primary);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  z-index: 10;
}

.project-details {
  padding: 2rem;
}

.project-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

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

.project-tech {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.tech-label {
  font-weight: 600;
  color: var(--text-primary);
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-tag {
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  border: 1px solid var(--border-color);
}

.project-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.more-projects {
  text-align: center;
  margin-top: var(--spacing-xl);
}

.coming-soon {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

/* Contact Section */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.contact-info h3,
.contact-form h3 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.contact-info p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.contact-social {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}

.social-link:hover {
  color: var(--accent-primary);
  background: var(--bg-secondary);
  border-color: var(--accent-primary);
}

.form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-input {
  width: 100%;
  padding: 0.75rem;
  margin-bottom: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: var(--font-size-base);
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-2xl);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.footer-name {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.footer-tagline {
  color: var(--text-secondary);
}

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

.footer-social {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s ease;
  padding: 0.5rem;
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
}

.footer-social:hover {
  color: var(--accent-primary);
  background: rgba(99, 102, 241, 0.1);
}

.footer-bottom {
  text-align: center;
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .container {
    padding: 0 1.5rem;
  }
  
  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .resume-grid {
    grid-template-columns: 1fr;
  }
  
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .profile-img {
    width: 180px;
    height: 180px;
  }
}

@media (max-width: 768px) {
  .header-content {
    padding: 1rem;
  }
  
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    flex-direction: column;
    padding: 1rem;
    border-top: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(15px);
  }

  [data-theme="light"] .nav {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  }
  
  .nav.nav-open {
    display: flex;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .hero-heading {
    font-size: var(--font-size-lg);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-lg);
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .section-title {
    font-size: var(--font-size-3xl);
  }
  
  .skills-grid {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  }
  
  .contact-content {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
  
  .project-image {
    height: 300px;
  }
  
  .project-details {
    padding: 1.5rem;
  }
  
  .resume-card {
    padding: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }
  
  .header-content {
    padding: 0.75rem 1rem;
  }
  
  .hero-content {
    padding: 0 1rem;
  }
  
  .hero-title {
    font-size: var(--font-size-2xl);
  }
  
  .hero-heading {
    font-size: var(--font-size-base);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-base);
  }
  
  .hero-description {
    font-size: var(--font-size-base);
  }
  
  .section-title {
    font-size: var(--font-size-2xl);
  }
  
  .btn {
    padding: 0.5rem 1rem;
    font-size: var(--font-size-sm);
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
  
  .project-image {
    height: 250px;
  }
  
  .project-details {
    padding: 1rem;
  }
  
  .resume-card {
    padding: 1rem;
  }
  
  .resume-card-title {
    font-size: var(--font-size-lg);
  }
  
  .profile-img {
    width: 150px;
    height: 150px;
  }
  
  .contact-social {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .social-link {
    justify-content: center;
  }
}

@media (max-width: 360px) {
  .hero-title {
    font-size: var(--font-size-xl);
  }
  
  .hero-heading {
    font-size: var(--font-size-sm);
  }
  
  .section-title {
    font-size: var(--font-size-xl);
  }
  
  .btn {
    padding: 0.5rem 0.75rem;
    font-size: var(--font-size-xs);
  }
  
  .project-image {
    height: 200px;
  }
  
  .resume-card-title {
    font-size: var(--font-size-base);
  }
  
  .profile-img {
    width: 120px;
    height: 120px;
  }
}