/* 
===================
General Styles
===================
*/
:root {
  /* Colors */
  --primary: #2D3436;
  --secondary: #0984E3;
  --accent: #00B894;
  --background: #FFFFFF;
  --text: #2D3436;
  --light-gray: #F5F7FA;
  --dark-gray: #636E72;
  --border-color: #E2E8F0;
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 24px;
  --radius-circle: 50%;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--background);
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  line-height: 1.3;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.text-primary {
  color: var(--primary);
}

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

.text-accent {
  color: var(--accent);
}

.text-dark-gray {
  color: var(--dark-gray);
}

.bg-accent {
  background-color: var(--accent);
}

.bg-secondary {
  background-color: var(--secondary);
}

.section-light {
  background-color: var(--light-gray);
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-xxl);
}

.section-title h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-xs);
}

.title-underline {
  height: 4px;
  width: 80px;
  background-color: var(--accent);
  margin: 0 auto;
  margin-top: var(--spacing-sm);
}

.section-description {
  max-width: 700px;
  margin: var(--spacing-lg) auto 0;
  color: var(--dark-gray);
}

/* 
===================
Buttons
===================
*/
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 16px;
  transition: all 0.3s ease;
  cursor: pointer;
  gap: 8px;
}

.btn-primary {
  background-color: var(--accent);
  color: white;
  border: none;
}

.btn-primary:hover {
  background-color: var(--accent);
  opacity: 0.9;
}

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

.btn-outline:hover {
  color: var(--secondary);
  border-color: var(--secondary);
}

.btn-accent {
  background-color: var(--accent);
  color: white;
  border: 2px solid var(--accent);
}

.btn-accent:hover {
  background-color: transparent;
  color: var(--accent);
}

.btn-text {
  display: inline-flex;
  align-items: center;
  background: none;
  border: none;
  color: var(--secondary);
  font-weight: 500;
  cursor: pointer;
  transition: color 0.3s ease;
  padding: var(--spacing-sm);
  gap: 8px;
}

.btn-text:hover {
  color: var(--accent);
}

.filter-btn {
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  margin: 4px;
  border: none;
  background-color: white;
  color: var(--primary);
}

.filter-btn:hover {
  background-color: var(--secondary);
  color: white;
}

.filter-btn.active {
  background-color: var(--accent);
  color: white;
}

/* 
===================
Header & Navigation
===================
*/
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: white;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  z-index: 1000;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
}

.logo-link {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--primary);
}

.nav-links {
  display: flex;
  gap: var(--spacing-xl);
}

.nav-link {
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  color: var(--primary);
  transition: color 0.3s ease;
  position: relative;
}

.nav-link:hover {
  color: var(--secondary);
}

.nav-link.active {
  color: var(--secondary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--accent);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--primary);
  font-size: 1.5rem;
  cursor: pointer;
}

.nav-mobile {
  display: none;
  padding: var(--spacing-md) 0;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.mobile-nav-link {
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: background-color 0.3s ease;
}

.mobile-nav-link:hover {
  background-color: var(--light-gray);
}

/* 
===================
Hero Section
===================
*/
.hero-section {
  padding: calc(80px + var(--spacing-xxl)) 0 var(--spacing-xxl);
}

.hero-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-xxl);
}

.hero-text {
  flex: 1;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--dark-gray);
  margin-bottom: var(--spacing-lg);
  font-weight: 500;
  line-height: 1.5;
}

.hero-description {
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  color: var(--dark-gray);
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.hero-image {
  flex: 1;
  display: flex;
  justify-content: center;
}

.profile-image-container {
  position: relative;
}

.profile-image-container::before {
  content: '';
  position: absolute;
  inset: -2px;
  background: linear-gradient(to right, var(--accent), var(--secondary));
  border-radius: var(--radius-circle);
  opacity: 0.3;
  filter: blur(10px);
}

.profile-image {
  width: 280px;
  height: 280px;
  border-radius: var(--radius-circle);
  background-color: var(--light-gray);
  border: 4px solid white;
  overflow: hidden;
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.profile-image i {
  font-size: 5rem;
  color: var(--secondary);
}

.profile-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* 
===================
About Section
===================
*/
.about-section {
  padding: var(--spacing-xxl) 0;
}

.about-content {
  display: flex;
  gap: var(--spacing-xl);
}

.about-column {
  flex: 1;
}

.about-column h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-lg);
}

.text-content {
  color: var(--dark-gray);
}

.text-content p {
  margin-bottom: var(--spacing-md);
}

.expertise-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.expertise-item h4 {
  margin-bottom: var(--spacing-xs);
  font-size: 1.1rem;
}

.expertise-item p {
  color: var(--dark-gray);
}

/* 
===================
Experience Section
===================
*/
.experience-section {
  padding: var(--spacing-xxl) 0;
}

.timeline-container {
  position: relative;
  padding: var(--spacing-lg) 0;
}

.timeline-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  background-color: var(--light-gray);
}

.timeline-items {
  position: relative;
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-xl);
}

.timeline-content {
  display: flex;
  align-items: center;
}

.timeline-marker {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-circle);
  background-color: var(--accent);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  z-index: 2;
}

.timeline-card {
  flex: 1;
  max-width: calc(50% - 60px);
  background-color: white;
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  transition: box-shadow 0.3s ease;
}

.timeline-card:hover {
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
}

.timeline-item:nth-child(odd) .timeline-content {
  flex-direction: row-reverse;
}

.timeline-item:nth-child(odd) .timeline-card {
  text-align: right;
  border-left: none;
  border-right: 4px solid;
}

.timeline-item:nth-child(even) .timeline-card {
  border-left: 4px solid;
  border-right: none;
}

.timeline-card.border-accent {
  border-color: var(--accent);
}

.timeline-card.border-secondary {
  border-color: var(--secondary);
}

.timeline-job-title {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-xs);
}

.timeline-company {
  color: var(--secondary);
  font-size: 1.1rem;
  margin-bottom: var(--spacing-sm);
}

.timeline-period {
  font-size: 0.85rem;
  color: var(--dark-gray);
  margin-bottom: var(--spacing-sm);
}

.timeline-description {
  color: var(--dark-gray);
  font-size: 0.95rem;
}

.show-more-container {
  text-align: center;
  margin-top: var(--spacing-lg);
}

/* 
===================
Projects Section
===================
*/
.projects-section {
  padding: var(--spacing-xxl) 0;
}

.project-filter {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.project-card {
  background-color: white;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.project-image {
  height: 200px;
  background-color: var(--light-gray);
  position: relative;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-badge {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  color: white;
}

.project-badge.accent {
  background-color: var(--accent);
}

.project-badge.secondary {
  background-color: var(--secondary);
}

.project-badge.primary {
  background-color: var(--primary);
}

.project-info {
  padding: var(--spacing-lg);
}

.project-title {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-sm);
}

.project-description {
  font-size: 0.95rem;
  margin-bottom: var(--spacing-md);
  color: var(--dark-gray);
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.project-tag {
  background-color: var(--light-gray);
  color: var(--dark-gray);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
}

.project-link {
  display: flex;
  align-items: center;
  color: var(--secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.3s ease;
}

.project-link:hover {
  color: var(--accent);
}

.project-link i {
  margin-left: var(--spacing-xs);
}

/* 
===================
Skills Section
===================
*/
.skills-section {
  padding: var(--spacing-xxl) 0;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

.skill-card {
  background-color: white;
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.skill-icon {
  width: 56px;
  height: 56px;
  background-color: var(--light-gray);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
}

.skill-icon i {
  font-size: 1.5rem;
}

.skill-title {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-md);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.skill-tag {
  background-color: var(--light-gray);
  color: var(--dark-gray);
  padding: 4px 10px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  transition: all 0.3s ease;
}

.language-card {
  grid-column: span 1;
}

.language-item {
  margin-bottom: var(--spacing-md);
}

.language-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--spacing-xs);
}

.language-name {
  font-size: 0.95rem;
  font-weight: 500;
}

.language-level {
  font-size: 0.85rem;
  color: var(--dark-gray);
}

.language-bar {
  width: 100%;
  height: 8px;
  background-color: var(--light-gray);
  border-radius: var(--radius-circle);
  overflow: hidden;
}

.language-progress {
  height: 100%;
  background-color: var(--primary);
  border-radius: var(--radius-circle);
}

/* 
===================
Education Section
===================
*/
.education-section {
  padding: var(--spacing-xxl) 0;
}

.education-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.education-card {
  background-color: white;
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  display: flex;
  transition: box-shadow 0.3s ease;
}

.education-card:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.education-icon {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  background-color: var(--light-gray);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: var(--spacing-lg);
}

.education-icon i {
  font-size: 2rem;
}

.education-info {
  flex: 1;
}

.education-degree {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-xs);
}

.education-institution {
  color: var(--secondary);
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
}

.education-period {
  font-size: 0.85rem;
  color: var(--dark-gray);
  margin-bottom: var(--spacing-sm);
}

.education-description {
  font-size: 0.95rem;
  color: var(--dark-gray);
}

/* 
===================
Contact Section
===================
*/
.contact-section {
  padding: var(--spacing-xxl) 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  max-width: 900px;
  margin: 0 auto;
}

.contact-card {
  background-color: white;
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  text-align: center;
  transition: box-shadow 0.3s ease;
}

.contact-card:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.contact-icon {
  width: 64px;
  height: 64px;
  background-color: var(--light-gray);
  border-radius: var(--radius-circle);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
}

.contact-icon i {
  font-size: 1.5rem;
}

.contact-type {
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.contact-value {
  color: var(--secondary);
  transition: color 0.3s ease;
}

.contact-value:hover {
  color: var(--accent);
}

.location-container {
  text-align: center;
  margin-top: var(--spacing-xxl);
}

.location-container h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-lg);
}

.location-card {
  display: inline-flex;
  align-items: center;
  background-color: white;
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.location-icon {
  width: 48px;
  height: 48px;
  background-color: var(--light-gray);
  border-radius: var(--radius-circle);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: var(--spacing-md);
}

.location-icon i {
  color: var(--accent);
  font-size: 1.2rem;
}

.location-info h4 {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-xs);
}

.location-info p {
  color: var(--dark-gray);
}

/* 
===================
Footer
===================
*/
.footer {
  background-color: var(--primary);
  color: white;
  padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

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

.footer-info h2 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

.footer-info p {
  color: rgba(255, 255, 255, 0.7);
}

.footer-social {
  display: flex;
  gap: var(--spacing-md);
}

.social-icon {
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-circle);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.3s ease;
}

.social-icon:hover {
  background-color: var(--accent);
}

.footer-bottom {
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
}

/* 
===================
Responsive Styles
===================
*/
@media (max-width: 992px) {
  .hero-title {
    font-size: 2.8rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
  
  .profile-image {
    width: 240px;
    height: 240px;
  }
  
  .timeline-line {
    left: 20px;
  }
  
  .timeline-content {
    flex-direction: row !important;
  }
  
  .timeline-card {
    max-width: calc(100% - 60px);
    border-left: 4px solid !important;
    border-right: none !important;
    text-align: left !important;
  }
}

@media (max-width: 768px) {
  .section-title h2 {
    font-size: 1.8rem;
  }
  
  .hero-section {
    padding-top: calc(70px + var(--spacing-xl));
  }
  
  .hero-content {
    flex-direction: column;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .about-content {
    flex-direction: column;
  }
  
  .nav-desktop {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .nav-mobile.show {
    display: block;
  }
  
  .footer-content {
    flex-direction: column;
    gap: var(--spacing-lg);
    text-align: center;
  }
}

@media (max-width: 576px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .profile-image {
    width: 200px;
    height: 200px;
  }
  
  .education-card {
    flex-direction: column;
  }
  
  .education-icon {
    margin: 0 auto var(--spacing-md);
  }
  
  .education-info {
    text-align: center;
  }
  
  .location-card {
    flex-direction: column;
    text-align: center;
  }
  
  .location-icon {
    margin: 0 auto var(--spacing-md);
  }
}