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

:root {
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary-color: #10b981;
  --accent-color: #f59e0b;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-light: #9ca3af;
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-dark: #111827;
  --border-color: #e5e7eb;
  --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);
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  margin: 0;
  padding: 0;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 1rem 0;
  color: var(--text-primary);
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: 2rem;
  color: var(--primary-color);
  border-bottom: 2px solid var(--primary-color);
  padding-bottom: 0.5rem;
  margin-bottom: 2rem;
}

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

h4 {
  font-size: 1.25rem;
  color: var(--secondary-color);
  font-weight: 500;
}

p {
  margin: 0 0 1rem 0;
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
}

/* Links */
a {
  color: var(--primary-color);
  text-decoration: none;
  transition: all 0.3s ease;
  border-bottom: 1px solid transparent;
}

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

/* Professional Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--gradient-primary);
  color: white;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
}

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

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

/* Layout Components */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.section {
  padding: 4rem 0;
}

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

.section-header h2 {
  border: none;
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Card Styles */
.card {
  background: var(--bg-primary);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
  margin-bottom: 2rem;
}

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

.card-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.card-icon {
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.card-subtitle {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin: 0;
}

/* Project Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.project-card {
  background: var(--bg-primary);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}

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

.project-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 1px solid var(--border-color);
}

.project-content {
  padding: 1.5rem;
}

.project-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.project-description {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tech-tag {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
}

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

.project-links a {
  font-size: 0.875rem;
  font-weight: 500;
}

/* Skills Section */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.skill-category {
  background: var(--bg-secondary);
  padding: 1.5rem;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.skill-category h4 {
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

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

.skill-list li {
  padding: 0.5rem 0;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
}

.skill-list li:last-child {
  border-bottom: none;
}

/* Contact Form */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.3s ease;
  background: var(--bg-primary);
  color: var(--text-primary);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

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

/* Social Links */
.social-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 2rem;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  color: white;
  border-radius: 50%;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
}

.social-link:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: white;
}

/* Header Styles */
.header {
  background: var(--bg-primary);
  padding: 2rem 0;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.header-content {
  max-width: 800px;
  margin: 0 auto;
}

.header-avatar {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  margin: 0 auto 2rem;
  border: 4px solid var(--primary-color);
  object-fit: cover;
  box-shadow: 0 4px 16px rgba(0,0,0,0.10);
  background: #fff;
  display: block;
}

.header-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-subtitle {
  font-size: 1.25rem;
  color: var(--secondary-color);
  margin-bottom: 1rem;
  font-weight: 500;
}

.header-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2rem;
}

/* Navigation */
.nav {
  background: var(--bg-primary);
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: all 0.3s ease;
}

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

/* Logo in Navigation */
.nav-logo {
  height: 40px;
  width: auto;
  margin-right: 1.5rem;
  vertical-align: middle;
  display: block;
  object-fit: contain;
  background: #fff;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  padding: 2px 6px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }
  
  .section {
    padding: 2rem 0;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
  
  .nav-container {
    flex-direction: column;
    justify-content: center;
    gap: 0.5rem;
  }
  
  .header-avatar {
    width: 100px;
    height: 100px;
  }
  .nav-logo {
    height: 32px;
    margin-right: 0.5rem;
    padding: 1px 3px;
  }
  .nav-links {
    gap: 0.5rem;
    margin: 0;
  }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-light: #9ca3af;
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --border-color: #374151;
  }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* Print styles */
@media print {
  .nav,
  .social-links,
  .btn {
    display: none;
  }
  
  body {
    background: white;
    color: black;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #ccc;
  }
}