:root {
  --bg-header: #fff;
  --primary-color: #333;
  --secondary-color: #f4f4f4;
  --accent-color: #007bff;
  --border-color: #ddd;
  --bg-zero: #fff;
  --bg-accent-primary: #f4f4f4;
  --bg-accent-secondary: #e9ecef;
  --bg-accent-tertiary: #f8f9fa;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
  color: var(--primary-color);
  margin: 0;
  padding: 0;
  background-color: var(--bg-accent-primary);
  overflow-x: hidden;
  width: 100%;
  position: relative;
}

a {
  text-decoration: none;
  color: var(--accent-color);
}

a:hover {
  text-decoration: underline;
}

.container {
  width: min(90%, 1200px);
  margin: 0 auto;
  padding: 1rem;
  box-sizing: border-box;
}

header {
  background-color: var(--bg-header);
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  padding: 1rem 0;
  position: relative;
}

header .container {
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.nav-toggle {
  display: none;
}

.nav-toggle-label {
  display: none;
  cursor: pointer;
}

nav {
  width: 100%;
}

nav ul {
  list-style-type: none;
  padding: 0;
  margin: 0;
  display: flex;
  justify-content: space-around;
}

nav li {
  margin: 0 1rem;
}

nav a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s ease;
}

nav a:hover {
  color: var(--accent-color);
}

main {
  padding: 2rem 0;
}

h1, h2, h3 {
  color: var(--primary-color);
}

.profile-section {
  display: flex;
  align-items: flex-start;
  margin-bottom: 2rem;
}

.profile-section .avatar {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  margin-right: 2rem;
}

.profile-section .tagline {
  font-weight: bold;
  font-size: 120%;
}

.vertical-tabs-section {
  background-color: var(--bg-accent-secondary);
  padding: 2rem 0;
  margin: 2rem 0;
  width: 100%;
  overflow: hidden;
  box-sizing: border-box;
}

.vertical-tabs {
  background-color: var(--bg-zero);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.tabs {
  display: flex;
  overflow-x: auto;
  scrollbar-width: thin;
  -ms-overflow-style: none;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  white-space: nowrap;
  width: 100%;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.tabs::-webkit-scrollbar {
  display: none;
}

.tab {
  flex: 0 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1rem;
  cursor: pointer;
  height: 90px;
  width: 180px;
  border-right: 1px solid var(--border-color);
  background-color: var(--bg-accent-primary);
  transition: background-color 0.3s ease;
}

.tab.active {
  background-color: var(--bg-zero);
}

.tab:last-child {
  border-bottom: none;
}

.tab img {
  max-width: 160px;
  max-height: 80px;
  margin: 5px;
}

.tab-content {
  padding: 1rem;
  background-color: var(--bg-zero);
}

.tab-description {
  display: none;
}

.tab-description:first {
  display: block;
}

.tab-description:target {
  display: block;
}

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

.two-box-section {
  background-color: var(--bg-accent-tertiary);
  padding: 2rem 0;
  margin: 0;
  width: 100vw;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
}

.two-box-content {
  width: min(90% 1200px);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 2rem;
}

.two-box-subsection {
  flex: 1;
  background-color: var(--bg-zero);
  border-radius: 8px;
  padding: 1rem;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.two-box-subsection .logo {
  max-width: 160px;
  max-height: 80px;
  object-fit: contain;
  margin-bottom: 1rem;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.two-box-subsection .logo-wrapper {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.two-box-subsection .logo-wrapper img {
  max-width: 160px;
  max-height: 80px;
  object-fit: contain;
}

footer {
  background-color: var(--bg-header);
  color: var(--primary-color);
  text-align: center;
  padding: 1rem 0;
  margin-top: 2rem;
}

#social a {
  margin: 0 4px;
  text-decoration: none;
}

.social-icon {
  transition: filter 0.3s ease;
}

.social-icon:hover {
  text-decoration: none;
  fill: var(--accent-color);
}

#contact {
  padding: 2rem 0;
}

.contact-intro {
  max-width: 600px;
  margin: 0 auto 2rem;
  text-align: center;
  color: var(--primary-color);
}

.contact-form {
  max-width: 600px;
  margin: 0 auto;
  padding: 2rem;
  background-color: var(--bg-zero);
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

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

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

.form-input {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-family: inherit;
  font-size: 1rem;
  background-color: var(--bg-zero);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  box-sizing: border-box;
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 2px rgba(0,123,255,0.1);
}

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

.submit-button {
  display: inline-block;
  width: 100%;
  padding: 0.75rem 1.5rem;
  background-color: var(--accent-color);
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  transition: background-color 0.3s ease;
  box-sizing: border-box;
}

.submit-button:hover {
  background-color: #0056b3;
}

.submit-button:focus {
  outline: none;
  box-shadow: 0 0 0 2px rgba(0,123,255,0.25);
}

@media (max-width: 768px) {
  header .container {
    flex-direction: column;
    align-items: center;
  }

  .nav-toggle-label {
    display: block;
    padding: 1rem;
    color: var(--primary-color);
    font-weight: bold;
    order: -1;
  }

  nav {
    width: 100%;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-header);
    z-index: 1000;
  }

  nav ul {
    flex-direction: column;
    align-items: center;
    padding: 0;
    margin: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  nav li {
    width: 100%;
    text-align: center;
  }

  nav a {
    display: block;
    padding: 1rem;
  }

  .nav-toggle:checked ~ nav ul {
    max-height: 300px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  }

  .nav-toggle:checked + .nav-toggle-label {
    color: var(--accent-color);
  }

  .profile-section {
    flex-direction: column;
    align-items: center;
  }

  .profile-section .avatar {
    margin-right: 0;
    margin-bottom: 1rem;
  }

  .tabs {
    flex-direction: row;
    overflow-x: auto;
    border-bottom: 1px solid var(--border-color);
  }

  .tab {
    flex-basis: 50%;
  }

  .tab:last-child {
    border-right: none;
  }

  .two-box-section {
    padding: 2rem 1rem;
  }

  .two-box-content {
    flex-direction: column;
    width: 100%;
    padding: 0 1rem;

  }

  .contact-form {
    padding: 1.5rem;
    margin: 0 1rem;
    width: auto;
    max-width: calc(100% - 2rem);
  }
}

@media (max-width: 480px) {
  .tab {
    flex-basis: 100%;
  }

  .contact-form {
    padding: 1rem;
  }

  .form-group {
    margin-bottom: 1rem;
  }

  .form-input {
    padding: 0.5rem;
  }
}

/* Article list styles */
#archive {
  background-color: var(--bg-zero);
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  padding: 2rem;
  margin: 2rem auto;
  max-width: 800px;
}

.group {
  margin-bottom: 3rem;
}

.group:last-child {
  margin-bottom: 0;
}

.key {
  color: var(--primary-color);
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--accent-color);
}

.value {
  display: flex;
  align-items: flex-start;
  padding: 1rem;
  margin: 1rem 0;
  background-color: var(--bg-accent-tertiary);
  border-radius: 6px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.value:hover {
  transform: translateX(4px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.date {
  flex: 0 0 80px;
  color: var(--primary-color);
  opacity: 0.8;
  font-size: 0.9rem;
}

.title {
  flex: 1;
}

.title a {
  font-weight: 500;
}

.tags a {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  margin: 0.2rem;
  font-size: 0.8rem;
  background-color: var(--bg-accent-secondary);
  border-radius: 4px;
  transition: background-color 0.2s ease;
}

.tags a:hover {
  background-color: var(--bg-accent-primary);
}

@media(max-width: 768px) {
  #archive {
    padding: 1rem;
    margin: 1rem;
    width: auto;
    box-sizing: border-box;
  }

  .value {
    display: block;
    padding: 0.75rem;
  }

  .date {
    display: block;
    width: auto;
    margin-bottom: 0.35rem;
  }

  .title {
    display: block;
  }

  .tags {
    margin-top: 0.5rem;
  }
}

@media(max-width: 480px) {
  #archive {
    padding: 1rem;
  }

  .key {
    font-size: 1.5rem;
  }

  .value {
    padding: 0.5rem;
  }
}

/* Article Styles */
/* Article styles - append to end of CSS file */
#article-single {
  max-width: 800px;
  margin: 4rem auto;
  padding: 2rem;
  background: var(--bg-zero);
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.article-title {
  font-size: 2.5rem;
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: 1rem;
  line-height: 1.2;
}

.article-tip {
  font-size: 0.9rem;
  color: var(--primary-color);
  opacity: 0.8;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.article-tip .split {
  opacity: 0.5;
  margin: 0 0.5rem;
}

.article-toc {
  background: var(--bg-accent-secondary);
  padding: 1.5rem;
  margin: 2rem 0;
  border-radius: 8px;
}

.article-toc-title {
  font-weight: bold;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.article-toc ul {
  list-style: none;
  padding-left: 1rem;
}

.article-toc li {
  margin: 0.5rem 0;
}

.article-toc a {
  color: var(--accent-color);
  text-decoration: none;
}

.article-toc a:hover {
  text-decoration: underline;
}

.article-content {
  line-height: 1.8;
  margin: 2rem 0;
  color: var(--primary-color);
}

.article-content h2 {
  font-size: 1.8rem;
  font-weight: bold;
  margin: 2.5rem 0 1.5rem;
  color: var(--primary-color);
}

.article-content h3 {
  font-size: 1.4rem;
  font-weight: bold;
  margin: 2rem 0 1rem;
  color: var(--primary-color);
}

.article-content p {
  margin: 1.5rem 0;
}

.article-content ul, 
.article-content ol {
  margin: 1.5rem 0;
  padding-left: 1.5rem;
}

.article-content li {
  margin: 0.5rem 0;
}

.article-content a {
  color: var(--accent-color);
  text-decoration: none;
}

.article-content a:hover {
  text-decoration: underline;
}

.article-content pre {
  background: var(--bg-accent-secondary);
  padding: 1.5rem;
  border-radius: 8px;
  overflow-x: auto;
  margin: 1.5rem 0;
}

.article-content code {
  font-family: monospace;
  font-size: 0.9em;
}

.article-content p code {
  background: var(--bg-accent-secondary);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
}

.article-content blockquote {
  margin: 2rem 0;
  padding: 1rem 1.5rem;
  border-left: 4px solid var(--accent-color);
  background: var(--bg-accent-secondary);
  font-style: italic;
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 2rem 0;
}

.article-tags {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

.article-tags a {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  margin: 0.2rem;
  font-size: 0.8rem;
  background: var(--bg-accent-secondary);
  border-radius: 4px;
  color: var(--primary-color);
  text-decoration: none;
  transition: background-color 0.2s ease;
}

.article-tags a:hover {
  background: var(--bg-accent-primary);
  text-decoration: none;
}

@media (max-width: 768px) {
  #article-single {
    margin: 2rem 1rem;
    padding: 1.5rem;
  }

  .article-title {
    font-size: 2rem;
  }

  .article-content h2 {
    font-size: 1.6rem;
  }

  .article-content h3 {
    font-size: 1.3rem;
  }
}

@media (max-width: 480px) {
  #article-single {
    margin: 1rem;
    padding: 1rem;
  }

  .article-title {
    font-size: 1.8rem;
  }

  .article-toc {
    padding: 1rem;
  }
}

/* Add to your existing CSS */
.article-author {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

/* Style the profile section differently when inside an article */
.article-author .profile-section {
  padding: 1.5rem;
  margin: 0;
  background: var(--bg-accent-tertiary);
  border-radius: 8px;
  box-shadow: none;
}

.article-author .profile-section .avatar {
  width: 120px;
  height: 120px;
  margin-right: 2rem;
}

.article-author .profile-section h1 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.article-author .profile-section h2 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
  opacity: 0.8;
}

.article-author .profile-section p {
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0;
}

@media (max-width: 768px) {
  .article-author .profile-section {
    padding: 1rem;
  }
  
  .article-author .profile-section .avatar {
    width: 100px;
    height: 100px;
    margin: 0 0 1rem 0;
  }
}

.article-author-header {
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

#page-404 {
  text-align: center;
}

.article-content {
  overflow-wrap: break-word;
  word-wrap: break-word;
  max-width: 100%;
}

.article-content pre {
  max-width: 100%;
  box-sizing: border-box;
}

nav ul {
  box-sizing: border-box;
  max-width: 100%;
}