:root {
  --background-color: #fff;
  --text-color: #333;
  --sidebar-bg: #fafafa;
  --sidebar-border: #e0e0e0;
  --sidebar-title-color: #000;
  --sidebar-link-color: #666;
  --sidebar-link-hover-color: #000;
  --sidebar-contact-title-color: #000;
  --sidebar-contact-link-color: #666;
  --sidebar-contact-link-hover-color: #000;
  --section-title-color: #000;
  --about-text-color: #333;
  --skill-category-title-color: #000;
  --skill-item-color: #666;
  --work-title-color: #000;
  --work-role-color: #666;
  --work-date-color: #666;
  --work-description-color: #666;
  --footer-color: #666;
  --border-color: #e0e0e0;
  --profile-border-color: #e0e0e0;
}

[data-theme="dark"] {
  --background-color: #1a1a1a;
  --text-color: #f0f0f0;
  --sidebar-bg: #2d2d2d;
  --sidebar-border: #404040;
  --sidebar-title-color: #ffffff;
  --sidebar-link-color: #ccc;
  --sidebar-link-hover-color: #ffffff;
  --sidebar-contact-title-color: #ffffff;
  --sidebar-contact-link-color: #ccc;
  --sidebar-contact-link-hover-color: #ffffff;
  --section-title-color: #ffffff;
  --about-text-color: #f0f0f0;
  --skill-category-title-color: #ffffff;
  --skill-item-color: #ccc;
  --work-title-color: #ffffff;
  --work-role-color: #ccc;
  --work-date-color: #999;
  --work-description-color: #ccc;
  --footer-color: #999;
  --border-color: #404040;
  --profile-border-color: #404040;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--background-color);
  font-size: 16px;
}

.layout {
  display: grid;
  grid-template-columns: 350px 1fr;
  min-height: 100vh;
}

/* Left Sidebar */
.sidebar {
  background: var(--sidebar-bg);
  padding: 80px 40px;
  border-right: 1px solid var(--sidebar-border);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.sidebar h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--sidebar-title-color);
}

.sidebar .subtitle {
  font-size: 1.1rem;
  color: var(--sidebar-link-color);
  margin-bottom: 40px;
  line-height: 1.5;
}

.sidebar nav {
  margin-bottom: 50px;
}

.sidebar nav a {
  display: block;
  color: var(--sidebar-link-color);
  text-decoration: none;
  margin-bottom: 12px;
  font-size: 1rem;
  transition: all 0.2s;
  padding-left: 0;
  border-left: 2px solid transparent;
}

.sidebar nav a:hover {
  color: var(--sidebar-link-hover-color);
  padding-left: 10px;
  border-left-color: var(--sidebar-link-hover-color);
}

/* Center links for smaller screens */
@media (max-width: 1024px) {
  .sidebar nav {
    text-align: center;
    margin-bottom: 20px;
  }

  .sidebar nav a {
    display: inline-block;
    text-align: left;
    padding-left: 0;
    border-left: none;
    margin-left: 5px;
    margin-right: 5px;
  }

  .sidebar nav a:hover {
    padding-left: 0;
    border-left-color: transparent;
  }

  .sidebar-contact {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 25px !important;
  }
  .sidebar-contact a {
    flex-wrap: wrap;
  }
}

.sidebar-contact {
  margin-top: 50px;
}

.sidebar-contact h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--sidebar-contact-title-color);
}

.sidebar-contact a {
  display: block;
  color: var(--sidebar-contact-link-color);
  text-decoration: none;
  margin-bottom: 10px;
  font-size: 0.95rem;
  word-break: break-all;
  transition: all 0.2s;
  border-bottom: 1px solid transparent;
  display: flex;
  align-items: center;
}

.sidebar-contact a:hover {
  color: var(--sidebar-contact-link-hover-color);
  border-bottom-color: var(--sidebar-contact-link-hover-color);
}

/* Resume download button styling */
.footer-resume-button {
  background-color: var(--sidebar-bg);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 8px 12px;
  margin-top: 10px;
  font-weight: 500;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--sidebar-contact-link-color);
  text-decoration: none;
  margin-left: 20px;
}

.contact-icon {
  margin-right: 10px;
  font-size: 1.1rem;
}

.profile-picture {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 30px;
  display: block;
  border: 3px solid var(--profile-border-color);
}

.sidebar h1 {
  text-align: center;
}

.sidebar .subtitle {
  text-align: center;
}

/* Main Content */
.main-content {
  padding: 80px 80px 80px 60px;
}

section {
  margin-bottom: 100px;
}

section:last-child {
  margin-bottom: 0;
}

h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 40px;
  color: var(--section-title-color);
}

/* About */
.about-text {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--about-text-color);
  max-width: 800px;
}

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 60px 30px;
}

@media (max-width: 1400px) {
  .skills-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 1100px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.skill-category h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--skill-category-title-color);
}

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

.skill-category li {
  font-size: 1rem;
  color: var(--skill-item-color);
  margin-bottom: 8px;
}

/* Current Projects */
.project-list {
  list-style: none;
  padding: 0;
}

.project-list li {
  margin-bottom: 30px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--border-color);
}

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

.project-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--work-title-color);
  margin-bottom: 8px;
}

.project-description {
  font-size: 1rem;
  color: var(--work-description-color);
  line-height: 1.6;
}

/* Work Experience */
.work-item {
  margin-bottom: 50px;
}

.work-item:last-child {
  margin-bottom: 0;
}

.work-header {
  margin-bottom: 15px;
}

.work-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--work-title-color);
  margin-bottom: 5px;
}

.work-role {
  font-size: 1rem;
  color: var(--work-role-color);
  margin-bottom: 5px;
}

.work-date {
  font-size: 0.95rem;
  color: var(--work-date-color);
}

.work-description {
  font-size: 1rem;
  color: var(--work-description-color);
  line-height: 1.7;
}

/* Footer */
footer {
  padding: 40px 80px 40px 60px;
  border-top: 1px solid var(--border-color);
  font-size: 0.9rem;
  color: var(--footer-color);
}

/* Responsive */
@media (max-width: 1024px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
    padding: 60px 40px;
  }

  .main-content {
    padding: 60px 40px;
  }

  footer {
    padding: 40px;
  }
}

@media (max-width: 768px) {
  .sidebar {
    padding: 40px 20px;
  }

  .sidebar h1 {
    font-size: 1.8rem;
  }

  .main-content {
    padding: 40px 20px;
  }

  h2 {
    font-size: 1.6rem;
    margin-bottom: 30px;
  }

  section {
    margin-bottom: 60px;
  }

  .skills-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  footer {
    padding: 30px 20px;
  }
}