/* Clean Modern Portfolio Design */

:root {
  --primary-color: #ff8830;
  --primary-dark: #e67622;
  --text-dark: #1a1a1a;
  --text-medium: #4a4a4a;
  --text-light: #7a7a7a;
  --background: #ffffff;
  --surface: #fafafa;
  --border: #e5e5e5;
  --shadow: rgba(0, 0, 0, 0.05);
  --shadow-hover: rgba(0, 0, 0, 0.1);
  --max-width: 1100px;
}

/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--background);
  font-size: 16px;
}

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

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  color: var(--text-medium);
  margin-bottom: 1rem;
}

/* Header and Navigation */
header {
  background: var(--background);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-dark);
  text-decoration: none;
}

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

.nav-links a {
  color: var(--text-medium);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  display: inline-block;
}

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

.nav-external {
  background: var(--primary-color);
  color: white !important;
  transition: all 0.2s ease;
}

.nav-external:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  color: white !important;
}

/* Main content */
main {
  min-height: calc(100vh - 140px);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* Hero section */
.hero {
  padding: 6rem 0;
  text-align: center;
  background: linear-gradient(135deg, var(--surface) 0%, var(--background) 100%);
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--text-dark) 0%, var(--primary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero h2 {
  font-size: 1.5rem;
  color: var(--text-medium);
  margin-bottom: 2rem;
  font-weight: 400;
}

.hero p {
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 3rem;
  color: var(--text-light);
}

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

.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
}

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

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

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

.btn-secondary:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  transform: translateY(-1px);
}

/* Sections */
.section {
  padding: 5rem 0;
}

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

.section-title h2 {
  margin-bottom: 1rem;
}

.section-title p {
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Skills grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.skill-card {
  background: var(--background);
  padding: 2.5rem 2rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  transition: all 0.2s ease;
  text-align: center;
}

.skill-card:hover {
  border-color: var(--primary-color);
  box-shadow: 0 4px 20px var(--shadow-hover);
  transform: translateY(-2px);
}

.skill-icon {
  font-size: 4rem;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

.skill-card h3 {
  margin-bottom: 1.5rem;
  color: var(--text-dark);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.skill-highlight {
  color: var(--primary-color);
}

.skill-card p {
  color: var(--text-medium);
  line-height: 1.7;
  text-align: left;
  margin: 0;
}

.skill-card ul {
  list-style: none;
}

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

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

/* Contact section */
.contact {
  background: var(--surface);
}

.contact-grid {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-top: 3rem;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 500;
  transition: all 0.2s ease;
}

.contact-link:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  transform: translateY(-1px);
}

.contact-icon {
  font-size: 1.25rem;
}

/* Resume specific styles */
.resume-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

.resume-section {
  margin-bottom: 4rem;
}

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

/* Experience items */
.experience-item,
.education-item {
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  margin-bottom: 2rem;
  transition: all 0.2s ease;
}

.experience-item:hover,
.education-item:hover {
  border-color: var(--primary-color);
  box-shadow: 0 4px 20px var(--shadow-hover);
}

.experience-header,
.education-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.experience-header h3,
.education-header h3 {
  color: var(--text-dark);
  margin: 0;
}

.date-badge {
  background: var(--primary-color);
  color: white;
  padding: 0.375rem 1rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
  white-space: nowrap;
}

.company {
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: 1rem;
}

.achievements {
  list-style: none;
}

.achievements li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-medium);
}

.achievements li:before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
}

/* Skills categories */
.skills-categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.skill-group {
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
}

.skill-group h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
}

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

.skill-tag {
  background: var(--surface);
  color: var(--text-dark);
  padding: 0.375rem 0.875rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
  border: 1px solid var(--border);
}

/* Contact info grid */
.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.contact-item {
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
}

.contact-item strong {
  color: var(--text-dark);
  display: block;
  margin-bottom: 0.5rem;
}

.contact-item a {
  color: var(--primary-color);
  text-decoration: none;
}

.contact-item a:hover {
  text-decoration: underline;
}

/* Footer */
footer {
  background: var(--text-dark);
  color: white;
  text-align: center;
  padding: 2rem 0;
}

footer p {
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
}

/* Responsive design */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .hero h2 {
    font-size: 1.25rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .nav-links {
    gap: 1rem;
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-grid {
    justify-content: center;
  }
  
  .experience-header,
  .education-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .container,
  .resume-container {
    padding: 0 1rem;
  }
  
  nav {
    padding: 0 1rem;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 4rem 0;
  }
  
  .section {
    padding: 3rem 0;
  }
  
  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
  }
}