*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f5f5f5;
  color: #222;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Header */
.site-header {
  background: #ffffff;
  border-bottom: 1px solid #e0e0e0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
}

.logo-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.logo-img {
  width: 32px;
  height: 32px;
  margin-right: 8px;
}

.logo-text {
  font-weight: 700;
  font-size: 20px;
  color: #222;
}

.nav-menu a {
  margin-left: 16px;
  text-decoration: none;
  color: #444;
  font-size: 14px;
}

.nav-menu a.active,
.nav-menu a:hover {
  color: #1a73e8;
}

/* Hero */
.hero {
  background: #f9fafb;
  border-bottom: 1px solid #e0e0e0;
  padding: 24px 0;
}

.hero-inner {
  display: flex;
  align-items: center;
}

.hero-copy h1 {
  margin: 0 0 8px;
  font-size: 24px;
}

.hero-subtitle {
  margin: 0 0 16px;
  color: #555;
}

.hero-search {
  display: flex;
  max-width: 480px;
}

.hero-search input[type="text"] {
  flex: 1;
  padding: 8px 10px;
  border: 1px solid #d0d0d0;
  border-right: none;
  border-radius: 4px 0 0 4px;
}

.hero-search button {
  padding: 8px 12px;
  border-radius: 0 4px 4px 0;
  border: none;
  background: #1a73e8;
  color: #fff;
  cursor: pointer;
}

/* Main */
.page-main {
  padding: 16px 0 40px;
}

.documents-section h2 {
  font-size: 18px;
  margin-bottom: 12px;
}

/* Cards list */
.doc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.doc-card {
  display: flex;
  align-items: stretch;
  background: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 10px;
  min-height: 120px;
}

.doc-thumb {
  flex: 0 0 120px;
  margin-right: 12px;
  display: block;
  overflow: hidden;
  border-radius: 6px;
  border: 1px solid #ddd;
}

.doc-thumb img {
  display: block;
  width: 100%;
  height: 120px;
  object-fit: cover;
  object-position: top center;
}

.thumb-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 120px;
  height: 120px;
  background: #eee;
  font-size: 12px;
  color: #777;
}

.doc-main {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.doc-title {
  font-size: 15px;
  margin: 0 0 4px;
}

.doc-title a {
  text-decoration: none;
  color: #1a0dab;
}

.doc-title a:hover {
  text-decoration: underline;
}

.doc-preview {
  margin: 0 0 6px;
  font-size: 13px;
  color: #555;
}

.doc-bottom-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
}

.doc-meta-left {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.doc-avatar-circle {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #e8f0fe;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: #1a73e8;
}

.doc-author {
  color: #555;
}

.doc-rating {
  color: #f9ab00;
}

.doc-open-link {
  text-decoration: none;
  font-weight: 500;
  color: #1a73e8;
}

/* Pagination */
.pagination {
  margin-top: 16px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 4px;
}

.page-link {
  padding: 4px 8px;
  border-radius: 4px;
  border: 1px solid #d0d0d0;
  font-size: 13px;
  text-decoration: none;
  color: #333;
}

.page-link.current {
  background: #1a73e8;
  color: #fff;
  border-color: #1a73e8;
}

.page-link.disabled {
  color: #999;
  border-style: dashed;
}

/* Doc page */
.doc-article {
  background: #fff;
  border-radius: 8px;
  border: 1px solid #e0e0e0;
  padding: 16px;
}

.doc-content {
  font-size: 14px;
  line-height: 1.6;
}

/* Comments */
.doc-comments {
  margin-top: 20px;
  background: #fff;
  border-radius: 8px;
  border: 1px solid #e0e0e0;
  padding: 16px;
}

.comment-list {
  list-style: none;
  padding: 0;
  margin: 0 0 12px;
}

.comment-item {
  border-bottom: 1px solid #eee;
  padding: 8px 0;
}

.comment-item:last-child {
  border-bottom: none;
}

.comment-header {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: #555;
}

.comment-body {
  font-size: 13px;
  margin-top: 4px;
}

.comment-form .form-row {
  margin-bottom: 8px;
}

.comment-form label {
  display: block;
  font-size: 13px;
  margin-bottom: 3px;
}

.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form textarea {
  width: 100%;
  padding: 6px 8px;
  border-radius: 4px;
  border: 1px solid #ccc;
}

.comment-form button {
  padding: 6px 12px;
  border-radius: 4px;
  border: none;
  background: #1a73e8;
  color: #fff;
  cursor: pointer;
  font-size: 13px;
}

.small-text {
  font-size: 11px;
  color: #777;
}

/* Admin */
.admin-body {
  background: #f5f5f5;
}

.admin-header {
  background: #202124;
  color: #fff;
  padding: 10px 0;
}

.admin-header h1 {
  margin: 0;
  font-size: 18px;
}

.admin-header a {
  color: #bbdefb;
}

.admin-main {
  padding: 16px 0 32px;
}

.admin-menu {
  list-style: none;
  padding: 0;
}

.admin-menu li {
  margin-bottom: 8px;
}

.admin-menu a {
  text-decoration: none;
  color: #1a73e8;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.admin-table th,
.admin-table td {
  border: 1px solid #ddd;
  padding: 6px 8px;
  vertical-align: top;
}

.admin-table th {
  background: #f1f3f4;
}

.notice {
  padding: 8px;
  background: #e8f0fe;
  border: 1px solid #c6dafc;
  border-radius: 4px;
  margin-bottom: 10px;
}

.error {
  padding: 8px;
  background: #fce8e6;
  border: 1px solid #f28b82;
  border-radius: 4px;
  color: #b00020;
}

.admin-login-wrapper {
  max-width: 360px;
  margin: 60px auto;
  padding: 20px;
  background: #fff;
  border-radius: 8px;
  border: 1px solid #ddd;
}

/* Blog */
.blog-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.blog-card {
  background: #fff;
  border-radius: 8px;
  border: 1px solid #e0e0e0;
  padding: 12px;
  margin-bottom: 10px;
}

.blog-title {
  margin: 0 0 4px;
  font-size: 17px;
}

.blog-title a {
  text-decoration: none;
  color: #1a0dab;
}

.blog-title a:hover {
  text-decoration: underline;
}

.blog-meta {
  font-size: 12px;
  color: #777;
  margin: 0 0 6px;
}

.blog-excerpt {
  font-size: 13px;
  color: #444;
}

.blog-article {
  background: #fff;
  border-radius: 8px;
  border: 1px solid #e0e0e0;
  padding: 16px;
}

/* Footer */
.site-footer {
  border-top: 1px solid #e0e0e0;
  background: #ffffff;
  padding: 12px 0;
  font-size: 12px;
  color: #666;
}

/* --- Admin layout with sidebar --- */
.admin-layout {
  display: flex;
  min-height: 100vh;
}

.admin-sidebar {
  width: 230px;
  background: #202124;
  color: #e8eaed;
  display: flex;
  flex-direction: column;
  padding: 14px 10px 10px;
}

.admin-sidebar-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 6px 10px;
  border-bottom: 1px solid #3c4043;
  margin-bottom: 8px;
}

.admin-sidebar-logo {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  overflow: hidden;
  background: #1a73e8;
  display: flex;
  align-items: center;
  justify-content: center;
}

.admin-sidebar-logo img {
  width: 28px;
  height: 28px;
}

.admin-sidebar-title {
  font-size: 13px;
}

.admin-sidebar-site {
  font-weight: 600;
  color: #e8eaed;
}

.admin-sidebar-role {
  font-size: 11px;
  color: #9aa0a6;
}

.admin-sidebar-nav {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.admin-sidebar-nav a {
  display: flex;
  align-items: center;
  padding: 7px 9px;
  border-radius: 6px;
  text-decoration: none;
  font-size: 13px;
  color: #e8eaed;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s, transform 0.05s;
}

.admin-sidebar-nav a:hover {
  background: #303134;
  color: #ffffff;
  transform: translateX(1px);
}

.admin-sidebar-nav a.active {
  background: #1a73e8;
  color: #ffffff;
}

.admin-sidebar-footer {
  margin-top: auto;
  padding-top: 8px;
  border-top: 1px solid #3c4043;
  font-size: 11px;
  color: #9aa0a6;
}

.admin-user-line {
  margin-bottom: 4px;
}

.admin-logout-link {
  display: inline-block;
  text-decoration: none;
  color: #f28b82;
  font-weight: 500;
}

.admin-logout-link:hover {
  text-decoration: underline;
}

/* Main admin area */
.admin-main-shell {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: #f5f5f5;
}

.admin-topbar {
  background: #ffffff;
  border-bottom: 1px solid #e0e0e0;
  padding: 10px 18px;
}

.admin-topbar-title {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  color: #202124;
}

.admin-topbar-subtitle {
  margin: 2px 0 0;
  font-size: 12px;
  color: #5f6368;
}

.admin-main-content {
  padding: 18px;
}

/* Stat cards */
.admin-stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.admin-stat-card {
  background: #ffffff;
  border-radius: 12px;
  border: 1px solid #e0e0e0;
  padding: 12px 14px;
  box-shadow: 0 6px 16px rgba(0,0,0,0.04);
}

.admin-stat-label {
  font-size: 12px;
  color: #5f6368;
  margin-bottom: 4px;
}

.admin-stat-number {
  font-size: 24px;
  font-weight: 600;
  color: #202124;
  margin-bottom: 4px;
}

.admin-stat-meta {
  font-size: 11px;
  color: #757575;
}

/* Quick actions */
.admin-quick-actions h2 {
  font-size: 16px;
  margin: 0 0 8px;
}

.admin-quick-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 10px;
}

.admin-quick-card {
  display: block;
  background: #ffffff;
  border-radius: 10px;
  border: 1px solid #e0e0e0;
  padding: 10px 12px;
  text-decoration: none;
  color: #202124;
  font-size: 13px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.04);
  transition: transform 0.08s ease, box-shadow 0.08s ease, border-color 0.08s;
}

.admin-quick-card:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.07);
  border-color: #1a73e8;
}

.admin-quick-title {
  font-weight: 600;
  margin-bottom: 4px;
}

/* Responsive admin layout */
@media (max-width: 768px) {
  .admin-layout {
    flex-direction: column;
  }
  .admin-sidebar {
    width: 100%;
    flex-direction: row;
    align-items: center;
    overflow-x: auto;
  }
  .admin-sidebar-brand {
    border-bottom: none;
    border-right: 1px solid #3c4043;
    margin-bottom: 0;
    padding-right: 10px;
    margin-right: 8px;
  }
  .admin-sidebar-nav {
    flex-direction: row;
    gap: 4px;
  }
  .admin-sidebar-footer {
    display: none;
  }
}
/* Solved badge styling */
.doc-page-title {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.solved-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 999px;
  background: #e6f4ea;
  color: #137333;
  border: 1px solid #c8e6c9;
}

.solved-badge-inline {
  margin-left: 6px;
  font-size: 11px;
}
.doc-pager {
  margin: 30px 0;
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.pager-btn {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 4px;
  border: 1px solid #ccc;
  text-decoration: none;
  font-size: 14px;
}

.pager-btn:hover {
  background: #f5f5f5;
}

.doc-pager {
  margin: 20px 0;
  display: flex;
  justify-content: space-between;
}

/* Pager: Previous on left, Next on right */
.doc-pager {
  margin: 20px 0;
  display: flex;
  width: 100%;                /* make it stretch full row */
  align-items: center;
}

/* Common button look */
.doc-pager .page-link {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 4px;
  border: 1px solid #ccc;
  font-size: 14px;
  text-decoration: none;
  text-align: center;
  min-width: 120px;
  background: #f8f9fa;
}

/* Hover effect */
.doc-pager .page-link:hover {
  background: #f1f3f4;
}

/* Force their positions */
.doc-pager .prev {
  margin-right: auto;         /* stick to left */
}

.doc-pager .next {
  margin-left: auto;          /* stick to right */
}

/* Force Previous on left and Next on right */
.doc-pager {
  margin: 20px 0;
  display: block;          /* override earlier display:flex */
  overflow: auto;          /* contain floats */
}

/* Clearfix (extra safety) */
.doc-pager::after {
  content: "";
  display: block;
  clear: both;
}

/* Make the links look like buttons */
.doc-pager .page-link {
  display: inline-block;
  min-width: 120px;
  text-align: center;
  padding: 6px 12px;
  border-radius: 4px;
  border: 1px solid #d0d0d0;
  background: #f8f9fa;
  text-decoration: none;
  color: #333;
}

.doc-pager .page-link:hover {
  background: #f1f3f4;
}

/* Previous sticks to the LEFT */
.doc-pager .prev {
  float: left;
}

/* Next sticks to the RIGHT (your red box) */
.doc-pager .next {
  float: right;
}