/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #17C0EB;
  --secondary-color: #7158E2;
  --text-color: #1a1a2e;
  --text-secondary: #4a5568;
  --bg-color: #ffffff;
  --bg-secondary: #f7fafc;
  --bg-tertiary: #edf2f7;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --max-width: 1200px;
  --content-width: 720px;
  --gradient: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
  --transition-fast: 0.2s ease;
  --transition-standard: 0.3s ease;
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;
}

html {
  height: 100%;
  overflow-x: hidden;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--bg-color);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  margin: 0;
  overflow-x: hidden;
  position: relative;
  will-change: auto;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

h1 {
  font-size: 3.5rem;
  margin-bottom: 2rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: 2.5rem;
  margin-top: 3rem;
  margin-bottom: 1.5rem;
}

h3 {
  font-size: 2rem;
  margin-top: 2.5rem;
}

/* Post content headings */
.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4,
.post-content h5,
.post-content h6 {
  font-family: 'Manrope', sans-serif;
  font-weight: 700;
  color: var(--text-color);
  -webkit-text-fill-color: unset;
  background: none;
}

.post-content h1 { font-size: 2rem; }
.post-content h2 { font-size: 1.75rem; }
.post-content h3 { font-size: 1.5rem; }
.post-content h4 { font-size: 1.25rem; }

p {
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
}

a {
  color: var(--secondary-color);
  text-decoration: none;
  transition: all var(--transition-fast);
  position: relative;
}

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

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

/* Header and Navigation */
.site-header {
  position: sticky;
  top: 0;
  background: var(--bg-color);
  z-index: 100;
  border-bottom: 1px solid var(--border-color);
  width: 100%;
  will-change: transform;
}

.site-header .container {
  padding-top: 2rem;
  padding-bottom: 2rem;
}

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

.site-title {
  font-family: 'Poppins', sans-serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-color);
  text-decoration: none;
  transition: transform 0.2s ease;
}

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

.nav-right {
  display: flex;
  align-items: center;
  gap: 2rem;
}

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

.nav-links a {
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-links a:hover {
  color: var(--text-color);
  background-color: var(--bg-secondary);
}

.nav-links a.active {
  color: var(--secondary-color);
  font-weight: 600;
}

.external-icon {
  opacity: 0.6;
  transition: opacity 0.2s ease;
}

.nav-links a:hover .external-icon {
  opacity: 1;
}

/* Language Dropdown */
.language-dropdown {
  position: relative;
}

.language-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.language-toggle:hover {
  border-color: var(--secondary-color);
  color: var(--secondary-color);
}

.language-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 0.5rem;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
  min-width: 150px;
}

.language-dropdown:hover .language-menu,
.language-dropdown:focus-within .language-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.language-menu a {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.language-menu a:hover {
  background-color: var(--bg-secondary);
  color: var(--secondary-color);
}

.language-menu a.active {
  color: var(--secondary-color);
  font-weight: 600;
}

.language-menu a:first-child {
  border-radius: 8px 8px 0 0;
}

.language-menu a:last-child {
  border-radius: 0 0 8px 8px;
}

/* Main Content */
.page-content {
  flex: 1;
  padding: 4rem 0 6rem;
}

/* Home Page */
.home {
  max-width: var(--content-width);
  margin: 0 auto;
}

.page-heading {
  text-align: center;
  margin-bottom: 4rem;
}

.post-list {
  margin-top: 3rem;
}

.post-item {
  margin-bottom: 3rem;
  padding: 2rem;
  background-color: var(--bg-color);
  border-radius: var(--border-radius-xl);
  border: 1px solid var(--border-color);
  transition: all var(--transition-standard);
  cursor: pointer;
  position: relative;
}

.post-item::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--border-radius-xl);
  background: radial-gradient(circle 800px at var(--mouse-x, 50%) var(--mouse-y, 50%), 
    rgba(23, 192, 235, 0.12) 0%, 
    rgba(113, 88, 226, 0.08) 30%,
    rgba(23, 192, 235, 0.04) 60%,
    transparent 100%);
  opacity: 0;
  transition: opacity var(--transition-standard);
  pointer-events: none;
  z-index: 0;
}

.post-item:hover::before {
  opacity: 1;
}


.post-title {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
  margin-top: 0;
  position: relative;
  z-index: 1;
}

.post-title a {
  color: var(--text-color);
  font-weight: 600;
  text-decoration: none;
}

.post-title a::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
}


.post-meta {
  font-size: 0.875rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
  position: relative;
  z-index: 1;
}

.post-meta::before {
  content: '';
  width: 40px;
  height: 3px;
  background: var(--gradient);
  border-radius: 2px;
}

.post-excerpt {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 0;
  position: relative;
  z-index: 1;
}

/* Post Page */
.post {
  max-width: var(--content-width);
  margin: 0 auto;
}

.post-header {
  margin-bottom: 3rem;
  text-align: center;
  padding-bottom: 3rem;
}

.post .post-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--text-color);
  background: none;
  -webkit-text-fill-color: unset;
}

.post .post-meta {
  justify-content: center;
  font-size: 1rem;
  margin-bottom: 0;
}

.post-author {
  margin-left: 1rem;
}

.post-content {
  font-size: 1.125rem;
  line-height: 1.8;
}

.post-content img {
  max-width: 100%;
  height: auto;
  margin: 2rem 0;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.post-content blockquote {
  position: relative;
  padding: 2rem 2rem 2rem 3rem;
  margin: 2rem 0;
  background-color: var(--bg-secondary);
  border-radius: var(--border-radius-lg);
  font-style: italic;
  color: var(--text-secondary);
}

.post-content blockquote::before {
  content: '"';
  position: absolute;
  left: 1rem;
  top: 0.5rem;
  font-size: 3rem;
  color: var(--primary-color);
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
}

.post-content code {
  background-color: var(--bg-tertiary);
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  font-size: 0.875em;
  font-family: 'Fira Code', 'Consolas', monospace;
}

.post-content pre {
  background-color: var(--text-color);
  color: var(--bg-color);
  padding: 1.5rem;
  border-radius: var(--border-radius-lg);
  overflow-x: auto;
  margin: 2rem 0;
  box-shadow: var(--shadow-md);
}

.post-content pre code {
  background-color: transparent;
  color: inherit;
  padding: 0;
}

.post-content ul,
.post-content ol {
  margin: 1.5rem 0;
  padding-left: 2rem;
}

.post-content ul li,
.post-content ol li {
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.post-content ul li::marker {
  color: var(--secondary-color);
}

.post-content ol li::marker {
  color: var(--secondary-color);
  font-weight: 600;
}

/* Page */
.page {
  max-width: var(--content-width);
  margin: 0 auto;
}

.page-header {
  margin-bottom: 3rem;
  text-align: center;
  padding-bottom: 3rem;
}

.page-title {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-content {
  font-size: 1.125rem;
  line-height: 1.8;
}

/* Footer */
.site-footer {
  width: 100%;
  background: linear-gradient(135deg, 
    rgba(113, 88, 226, 0.03) 0%, 
    rgba(23, 192, 235, 0.05) 50%,
    rgba(113, 88, 226, 0.03) 100%);
  border-top: 1px solid var(--border-color);
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.site-footer .container {
  padding: 1.5rem 0;
}

.site-footer p {
  margin: 0;
}

.footer-tagline {
  font-size: 0.8rem;
  opacity: 0.8;
  font-weight: 400;
}

/* Button styles */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  background: var(--gradient);
  color: white;
  border-radius: 30px;
  font-weight: 500;
  transition: all var(--transition-standard);
  box-shadow: var(--shadow-md);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: white;
}

/* Mobile Menu */
.mobile-menu-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  margin-left: auto;
  z-index: 102;
  position: relative;
}

.hamburger {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-color);
  margin: 5px 0;
  transition: all var(--transition-standard);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger:nth-child(1) {
  transform: rotate(45deg) translate(3px, 5px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -7px);
}

/* Responsive */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }

  .nav-right {
    position: fixed;
    top: 0;
    right: 0;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background-color: var(--bg-color);
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 101;
    display: flex;
    flex-direction: column;
    padding: 6rem 0 2rem 0;
    overflow-y: auto;
    will-change: transform;
  }

  .nav-right.nav-open {
    transform: translateX(0);
  }

  body.menu-open {
    overflow: hidden;
  }

  .nav-links {
    flex-direction: column;
    gap: 0;
    margin-bottom: 2rem;
    width: 100%;
  }

  .nav-links a {
    width: 100%;
    padding: 1.5rem 2rem;
    font-size: 1.1rem;
    margin: 0;
    border-radius: 0;
    border-bottom: 1px solid var(--border-color);
    display: block;
    box-sizing: border-box;
  }

  .nav-links a:last-child {
    border-bottom: none;
  }

  .language-dropdown {
    position: static;
    width: 100%;
  }

  .language-toggle {
    width: 100%;
    padding: 1.5rem 2rem;
    font-size: 1rem;
    border-radius: 0;
    border-bottom: 1px solid var(--border-color);
    display: block;
    box-sizing: border-box;
  }

  .language-menu {
    position: static;
    margin-top: 0;
    opacity: 0;
    visibility: hidden;
    transform: none;
    box-shadow: none;
    border: none;
    border-radius: 0;
    max-height: 0;
    overflow: hidden;
    transition: all var(--transition-standard);
  }

  .language-menu.mobile-language-open {
    opacity: 1;
    visibility: visible;
    max-height: 200px;
  }

  .language-menu a {
    padding: 1.5rem 2rem;
    font-size: 1rem;
    border-bottom: 1px solid var(--border-color);
    border-radius: 0;
    display: block;
    box-sizing: border-box;
    width: 100%;
  }

  .language-menu a:last-child {
    border-bottom: none;
  }

  .container {
    padding: 0 1.5rem;
  }
  
  body {
    font-size: 15px;
  }
  
  h1 {
    font-size: 2.25rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .site-header .container {
    padding: 1.25rem 1rem;
  }
  
  .site-nav {
    gap: 0.75rem;
  }
  
  .post-title {
    font-size: 1.375rem;
  }
  
  .post-item {
    padding: 1.25rem;
    margin-bottom: 1.75rem;
  }
  
  .post .post-title {
    font-size: 1.875rem;
  }
  
  .post-content {
    font-size: 1rem;
  }

  .post-header .post-meta {
    flex-direction: column;
    align-items: center;
    gap: 0.375rem;
  }

  .post-meta::before {
    margin: 0.375rem 0;
  }
  
  .page-content {
    padding: 3rem 0 4rem;
  }
  
  .post-header {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
  }
  
  .page-heading {
    margin-bottom: 3rem;
  }
  
  .post-content h1,
  .post-content h2,
  .post-content h3,
  .post-content h4,
  .post-content h5,
  .post-content h6 {
    margin-top: 2rem;
    margin-bottom: 0.75rem;
  }
  
  .post-content h2 {
    margin-top: 2.5rem;
  }
  
  .post-content h3 {
    margin-top: 2rem;
  }
  
  .post-content p {
    margin-bottom: 1.25rem;
  }
  
  .post-content ul,
  .post-content ol {
    margin: 1.25rem 0;
    padding-left: 1.5rem;
  }
  
  .post-content blockquote {
    padding: 1.5rem 1.5rem 1.5rem 2.5rem;
    margin: 1.5rem 0;
  }
  
  .post-content img {
    margin: 1.5rem 0;
  }
  
  .post-content pre {
    margin: 1.5rem 0;
    padding: 1.25rem;
  }
  
  .post-author {
    margin-left: 0;
  }
}