/* Custom CSS for Modern Professional Portfolio */

/* Global Styles */
:root {
  --primary-color: #667eea;
  --secondary-color: #764ba2;
  --accent-color: #f093fb;
  --text-color: #333;
  --text-light: #666;
  --bg-light: #f8f9fa;
  --border-color: #e9ecef;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 8px 25px rgba(0, 0, 0, 0.15);
  --border-radius: 12px;
  --transition: all 0.3s ease;
}

/* Typography */
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1rem;
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
}

h2 {
  font-size: 2rem;
  color: var(--text-color);
}

h3 {
  font-size: 1.5rem;
}

/* Navigation */
.site-header {
  background: white;
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.site-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

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

.site-nav li {
  margin: 0;
}

.site-nav a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  transition: var(--transition);
  position: relative;
}

.site-nav a:hover {
  color: var(--primary-color);
  background: rgba(102, 126, 234, 0.1);
}

.site-nav a.active {
  color: var(--primary-color);
  background: rgba(102, 126, 234, 0.15);
  font-weight: 600;
}

.site-nav a.active::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  background: var(--primary-color);
  border-radius: 50%;
}

.site-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
}

.site-title:hover {
  color: var(--secondary-color);
}

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

.trigger a {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

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

.trigger a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: var(--transition);
}

.trigger a:hover::after {
  width: 100%;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  border: 2px solid transparent;
  cursor: pointer;
  font-size: 1rem;
}

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

.btn-primary:hover {
  background: #5a6fd8;
  border-color: #5a6fd8;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

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

.btn-secondary:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

.btn-large {
  padding: 16px 32px;
  font-size: 1.1rem;
}

/* Cards */
.card {
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 2rem;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-color);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 1rem;
  transition: var(--transition);
  background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Work Items */
.work-item {
  background: white;
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
  margin-bottom: 2rem;
}

.work-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.work-item h3 {
  margin-bottom: 0.5rem;
}

.work-item h3 a {
  color: var(--text-color);
  text-decoration: none;
  transition: var(--transition);
}

.work-item h3 a:hover {
  color: var(--primary-color);
}

.work-date {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.read-more {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

.read-more:hover {
  text-decoration: underline;
}

/* Service Cards */
.service-card {
  padding: 2rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  transition: var(--transition);
  background: white;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.service-card h3 {
  color: var(--text-color);
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.service-card p {
  color: var(--text-light);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.service-card ul {
  list-style: none;
  padding: 0;
}

.service-card li {
  padding: 0.5rem 0;
  color: var(--text-light);
  position: relative;
  padding-left: 1.5rem;
}

.service-card li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #28a745;
  font-weight: bold;
}

/* Value Items */
.value-item {
  text-align: center;
  padding: 2rem;
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.value-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.value-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.value-item h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-color);
}

.value-item p {
  color: var(--text-light);
  line-height: 1.6;
}

/* Tech Stack */
.tech-stack {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.tech-category {
  padding: 1.5rem;
  background: var(--bg-light);
  border-radius: var(--border-radius);
}

.tech-category h3 {
  color: var(--text-color);
  margin-top: 0;
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

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

.tech-item {
  background: var(--primary-color);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.tech-item:hover {
  background: var(--secondary-color);
  transform: translateY(-2px);
}

/* Contact Form */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
  background: white;
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
}

/* Responsive Design */
@media (max-width: 768px) {
  .site-nav {
    flex-direction: column;
    gap: 1rem;
  }
  
  .site-nav ul {
    flex-direction: column;
    gap: 0.5rem;
    width: 100%;
  }
  
  .site-nav a {
    display: block;
    text-align: center;
    padding: 0.75rem 1rem;
  }
  
  .trigger {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .btn-large {
    padding: 12px 24px;
    font-size: 1rem;
  }
  
  .hero-cta, .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .value-grid, .services-grid, .work-grid {
    grid-template-columns: 1fr;
  }
  
  .tech-stack {
    grid-template-columns: 1fr;
  }
  
  .problem-solution {
    grid-template-columns: 1fr;
  }
  
  .service-details {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }
  
  .card, .work-item, .service-card {
    padding: 1.5rem;
  }
  
  .contact-form {
    padding: 1.5rem;
  }
}

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

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

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

/* Focus styles for accessibility */
.btn:focus,
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Print styles */
@media print {
  .site-header,
  .btn,
  .contact-form {
    display: none;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.4;
  }
  
  h1, h2, h3 {
    page-break-after: avoid;
  }
}