/*!
 * HelloJ Blog - Custom Styles
 * Minimal, Clean, Modern
 */

/* ===== CSS Variables ===== */
:root {
  --primary: #2c3e50;
  --accent: #e74c3c;
  --text: #333;
  --text-light: #666;
  --bg: #f5f5f5;
  --card: #fff;
  --border: #e8e8e8;
}

/* ===== Header / Hero Section - Hide homepage title only, keep nav ===== */
/* Only hide header-wrapper on homepage (it has header-subtitle-homepage) */
.header-container .header-wrapper:has(.header-subtitle-homepage) {
  display: none !important;
}

/* For browsers that don't support :has(), also target the specific homepage structure */
.header-container .header-wrapper .header-subtitle-homepage {
  display: none !important;
}

/* Hide the entire homepage header-wrapper via parent */
.header-container:has(.header-subtitle-homepage) .header-wrapper {
  display: none !important;
}

.header-container {
  background: #2c3e50 !important;
  min-height: auto !important;
  padding: 0 !important;
}

/* Show article detail header properly */
.header-container .header-wrapper {
  padding: 30px 0;
}

/* ===== Navigation Bar ===== */
.header-nav {
  background: rgba(255,255,255,0.98) !important;
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px rgba(0,0,0,0.05) !important;
  border-bottom: 1px solid rgba(0,0,0,0.05);
}

.header-nav .nav-menu a.nav-link {
  color: var(--primary) !important;
  font-weight: 500;
  letter-spacing: 0.03em;
  padding: 8px 16px;
  border-radius: 4px;
  transition: all 0.3s ease;
}

.header-nav .nav-menu a:hover.nav-link {
  color: var(--accent) !important;
  background: rgba(102, 126, 234, 0.1) !important;
  text-decoration: none;
}

/* ===== Main Content Area ===== */
.archive-container {
  padding: 40px 0;
}

.archive-container .content {
  background: var(--card);
  border-radius: 12px;
  padding: 40px;
  box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}

.archive-container h2 {
  color: var(--primary);
  font-weight: 600;
  font-size: 1.6em;
  margin-bottom: 30px;
  padding-bottom: 15px;
  border-bottom: 2px solid var(--border);
  position: relative;
}

.archive-container h2::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 80px;
  height: 2px;
  background: linear-gradient(90deg, #667eea, #764ba2);
}

/* ===== Article List Items ===== */
.archive-container dl.row {
  margin-bottom: 0;
}

.archive-container dt {
  color: var(--text-light);
  font-weight: 400;
  font-size: 0.9em;
  padding-top: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid transparent;
}

.archive-container dd {
  padding-top: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  transition: all 0.3s ease;
}

.archive-container dd:hover {
  background: rgba(102, 126, 234, 0.03);
  transform: translateX(5px);
}

.archive-container dd a {
  color: var(--text) !important;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.3s ease;
}

.archive-container dd a:hover {
  color: var(--accent) !important;
  text-decoration: none;
}

.archive-container dl.row dt:last-of-type,
.archive-container dl.row dd:last-of-type {
  border-bottom: none;
}

/* ===== Pagination ===== */
.pagination {
  margin-top: 40px;
  text-align: center;
}

.pagination a,
.pagination .page-number {
  display: inline-block;
  padding: 8px 16px;
  margin: 0 4px;
  border-radius: 6px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  transition: all 0.3s ease;
}

.pagination a:hover {
  background: var(--primary);
  color: #fff !important;
  border-color: var(--primary);
  text-decoration: none;
}

.pagination .current {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff !important;
  border-color: transparent;
}

/* ===== Footer ===== */
.footer {
  background: var(--primary) !important;
  color: rgba(255,255,255,0.8);
  padding: 50px 0 30px;
  margin-top: 60px;
}

.footer .footer-title {
  color: #fff;
  font-weight: 600;
  font-size: 0.9em;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 15px;
}

.footer a {
  color: rgba(255,255,255,0.7) !important;
  transition: color 0.3s ease;
}

.footer a:hover {
  color: #fff !important;
  text-decoration: none;
}

.footer .list-unstyled li {
  margin-bottom: 8px;
}

/* ===== Article Content ===== */
.post-content {
  line-height: 1.8;
  color: var(--text);
}

.post-content h1,
.post-content h2,
.post-content h3 {
  color: var(--primary);
  font-weight: 600;
  margin-top: 2em;
  margin-bottom: 0.8em;
}

.post-content h2 {
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.3em;
}

.post-content p {
  margin-bottom: 1.2em;
}

.post-content code {
  background: #f0f0f0;
  padding: 2px 6px;
  border-radius: 3px;
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  font-size: 0.9em;
  color: #e74c3c;
}

.post-content pre {
  background: #2c3e50;
  border-radius: 8px;
  padding: 20px;
  overflow-x: auto;
  margin: 1.5em 0;
}

.post-content pre code {
  background: transparent;
  color: #f8f8f2;
  padding: 0;
  font-size: 0.85em;
  line-height: 1.6;
}

.post-content blockquote {
  border-left: 4px solid #667eea;
  background: #f8f9fa;
  padding: 20px 25px;
  margin: 1.5em 0;
  border-radius: 0 8px 8px 0;
  font-style: italic;
  color: var(--text-light);
}

.post-content img {
  max-width: 100%;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

/* ===== Reading Progress Bar ===== */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, #667eea, #764ba2);
  z-index: 9999;
  transition: width 0.1s ease;
}

/* ===== Back to Top Button ===== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 45px;
  height: 45px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  z-index: 1000;
  font-size: 1.2em;
  color: var(--primary);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
}

/* ===== Smooth Scroll ===== */
html {
  scroll-behavior: smooth;
}

/* ===== Selection Color ===== */
::selection {
  background: rgba(102, 126, 234, 0.3);
  color: var(--primary);
}

/* ==========================================================================
   MOBILE RESPONSIVE - Complete Rewrite
   ========================================================================== */

@media (max-width: 767px) {
  /* 
   * CRITICAL FIX: Body padding must account for fixed header
   * Theme's header-nav is ~50-60px, but with logo and menu it can be taller
   */
  body {
    padding-top: 70px !important;
  }
  
  /* ===== Navigation Fixes - Force horizontal menu ===== */
  .header-nav {
    padding: 10px 0 !important;
    height: auto !important;
    line-height: normal !important;
  }
  
  .header-nav .container {
    padding-left: 15px;
    padding-right: 15px;
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
  }
  
  /* Force nav menu to always show horizontally */
  .header-nav .nav-menu,
  .header-nav .nav-menu.collapse,
  .header-nav .nav-menu.collapsing,
  .header-nav .nav-menu.collapse.show {
    display: flex !important;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 5px 0;
    flex: 1;
    border: none;
    background: transparent;
  }
  
  .header-nav .nav-menu::-webkit-scrollbar {
    display: none;
  }
  
  .header-nav .nav-menu .navbar-nav {
    flex-direction: row !important;
    flex-wrap: nowrap;
  }
  
  .header-nav .nav-menu .nav-item {
    flex-shrink: 0;
  }
  
  .header-nav .nav-menu a.nav-link {
    padding: 8px 12px;
    font-size: 0.9em;
    white-space: nowrap;
  }
  
  /* Hide the hamburger menu button */
  .navbar-toggler {
    display: none !important;
  }
  
  /* Logo adjustments */
  .header-logo {
    flex-shrink: 0;
    margin-right: 15px;
  }
  
  /* ===== Article List Page - More Spacious Layout ===== */
  .archive-container {
    padding: 15px 0;
  }
  
  .archive-container .content {
    padding: 25px 20px;
    margin: 0 12px;
    border-radius: 12px;
  }
  
  .archive-container h2 {
    font-size: 1.4em;
    margin-bottom: 25px;
    padding-bottom: 12px;
  }
  
  /* Article list - card style items */
  .archive-container dl.row {
    display: block;
    margin: 0;
  }
  
  .archive-container dl.row dt,
  .archive-container dl.row dd {
    display: block;
    width: 100%;
    max-width: 100%;
    flex: none;
    padding: 0;
    margin: 0;
  }
  
  .archive-container dt {
    font-size: 0.8em;
    color: var(--text-light);
    margin-top: 20px;
    margin-bottom: 6px;
    padding: 0;
  }
  
  .archive-container dt:first-of-type {
    margin-top: 0;
  }
  
  .archive-container dd {
    font-size: 1em;
    padding: 12px 0 20px 0;
    margin-bottom: 0;
    border-bottom: 1px solid var(--border);
    line-height: 1.6;
  }
  
  .archive-container dd:last-of-type {
    border-bottom: none;
    padding-bottom: 0;
  }
  
  .archive-container dd:hover {
    transform: none;
    background: transparent;
  }
  
  .archive-container dd a {
    display: block;
  }
  
  /* ===== Article Detail Page Header - Show on mobile ===== */
  .header-container .header-wrapper {
    display: block !important;
    padding: 20px 0 !important;
    margin-top: 0 !important;
    background: rgba(0,0,0,0.2);
  }
  
  .header-container .header-content {
    padding: 0 15px;
  }
  
  .header-content .header-title {
    font-size: 1.5em !important;
    line-height: 1.4;
    word-wrap: break-word;
    margin-bottom: 10px;
  }
  
  .header-content .header-date {
    font-size: 0.85em;
    line-height: 1.6;
    color: rgba(255,255,255,0.8);
  }
  
  .header-content .header-date a {
    color: rgba(255,255,255,0.9) !important;
  }
  
  .header-tags {
    float: none !important;
    margin-top: 15px;
    font-size: 0.8em;
  }
  
  .header-tags a {
    color: rgba(255,255,255,0.9) !important;
  }
  
  /* Main content area */
  main .container.content {
    padding: 25px 18px;
  }
  
  main .container.content article {
    font-size: 1em;
    line-height: 1.8;
  }
  
  /* Article typography */
  .post-content {
    font-size: 1em;
  }
  
  .post-content h1 {
    font-size: 1.5em;
    margin-top: 1.8em;
    margin-bottom: 0.6em;
  }
  
  .post-content h2 {
    font-size: 1.3em;
    margin-top: 1.6em;
    margin-bottom: 0.6em;
  }
  
  .post-content h3 {
    font-size: 1.15em;
    margin-top: 1.4em;
    margin-bottom: 0.5em;
  }
  
  .post-content p {
    margin-bottom: 1.2em;
  }
  
  /* Code blocks */
  .post-content pre {
    padding: 15px;
    margin: 1.2em -5px;
    border-radius: 6px;
    font-size: 0.85em;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  .post-content code {
    font-size: 0.9em;
    word-break: break-word;
  }
  
  /* Blockquotes */
  .post-content blockquote {
    padding: 15px 18px;
    margin: 1.2em -5px;
    font-size: 0.95em;
  }
  
  /* Images */
  .post-content img {
    max-width: 100%;
    height: auto;
    margin: 1.2em 0;
    border-radius: 6px;
  }
  
  /* Tables */
  .post-content table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    font-size: 0.9em;
    border-collapse: collapse;
  }
  
  .post-content table th,
  .post-content table td {
    padding: 8px 12px;
    border: 1px solid var(--border);
  }
  
  /* Lists */
  .post-content ul,
  .post-content ol {
    padding-left: 1.8em;
    margin-bottom: 1.2em;
  }
  
  .post-content li {
    margin-bottom: 0.4em;
  }
  
  /* Related articles */
  .container.content h4 {
    font-size: 1.15em;
    margin-top: 2.5em;
    margin-bottom: 1em;
  }
  
  .container.content dl.row {
    display: block;
  }
  
  .container.content dl.row dt,
  .container.content dl.row dd {
    display: block;
    width: 100%;
    flex: none;
    padding: 0;
    margin: 0;
  }
  
  .container.content dl.row dt {
    font-size: 0.8em;
    color: var(--text-light);
    margin-top: 15px;
  }
  
  .container.content dl.row dd {
    padding: 8px 0 15px 0;
    border-bottom: 1px solid var(--border);
  }
  
  /* ===== Pagination ===== */
  .pagination {
    margin-top: 30px;
    padding: 0 10px;
  }
  
  .pagination a,
  .pagination .page-number {
    padding: 8px 14px;
    font-size: 0.9em;
    margin: 3px;
  }
  
  /* ===== Footer ===== */
  .footer {
    padding: 35px 0 25px;
    margin-top: 50px;
  }
  
  .footer-container {
    padding-left: 15px;
    padding-right: 15px;
  }
  
  .footer .row > div {
    margin-bottom: 25px;
  }
  
  .footer .row > div:last-child {
    margin-bottom: 0;
  }
  
  /* ===== Back to top button ===== */
  .back-to-top {
    bottom: 20px;
    right: 15px;
    width: 42px;
    height: 42px;
    font-size: 1em;
  }
  
  /* ===== Gitalk comments ===== */
  .gt-container {
    font-size: 0.95em;
    margin-top: 30px;
  }
  
  .gt-container .gt-header-textarea {
    font-size: 0.95em;
  }
  
  .gt-container .gt-btn {
    padding: 8px 16px;
    font-size: 0.9em;
  }
}

/* Extra small devices */
@media (max-width: 375px) {
  body {
    padding-top: 65px !important;
  }
  
  .archive-container .content {
    padding: 20px 15px;
    margin: 0 10px;
  }
  
  .archive-container h2 {
    font-size: 1.25em;
  }
  
  .header-content .header-title {
    font-size: 1.35em !important;
  }
  
  main .container.content {
    padding: 20px 15px;
  }
  
  .post-content {
    font-size: 0.95em;
  }
  
  .header-nav .nav-menu a.nav-link {
    padding: 6px 10px;
    font-size: 0.85em;
  }
}