/*
 * Application stylesheet for SoloDev.Cool community
 * Light/Dark theme support via CSS variables + data-bs-theme
 */

:root {
  --bg-body: #f9fafb;
  --bg-card: #fff;
  --bg-card-hover: #fafbfc;
  --bg-input: #f9fafb;
  --border-color: #f3f4f6;
  --border-color-strong: #e5e7eb;
  --border-color-stronger: #d1d5db;
  --text-primary: #111827;
  --text-secondary: #374151;
  --text-tertiary: #4b5563;
  --text-muted: #6b7280;
  --text-faint: #9ca3af;
  --text-link: #2563eb;
  --bg-navbar: #fff;
  --border-navbar: #e5e7eb;
  --text-navbar: #374151;
  --text-brand: #111827;
  --bg-search-icon: #9ca3af;
  --bg-code: #f3f4f6;
  --text-code: #e11d48;
  --bg-blockquote: #f9fafb;
  --border-blockquote: #e5e7eb;
  --text-blockquote: #4b5563;
  --bg-btn-outline: #f3f4f6;
  --border-btn-outline: #e5e7eb;
  --text-btn-outline: #374151;
  --bg-btn-primary: #111827;
  --border-btn-primary: #111827;
  --text-btn-primary: #fff;
  --bg-btn-outline-hover: #e5e7eb;
  --border-btn-outline-hover: #d1d5db;
  --text-btn-outline-hover: #111827;
  --bg-btn-primary-hover: #1f2937;
  --border-btn-primary-hover: #1f2937;
  --bg-btn-active: #0d1117;
  --border-btn-active: #0d1117;
  --bg-pinned: #fffbeb;
  --border-pinned: #f59e0b;
  --bg-mark: #fef3c7;
  --text-mark: #92400e;
  --border-node-card: #f3f4f6;
  --border-node-card-hover: #d1d5db;
  --bg-node-card-hover: #f9fafb;
  --bg-badge-node: #f3f4f6;
  --text-badge-node: #4b5563;
  --bg-user-header: linear-gradient(135deg, #111827 0%, #1f2937 100%);
  --shadow-card: rgba(0,0,0,0.05);
  --shadow-avatar: rgba(0,0,0,0.1);
  --bg-node-active: #111827;
  --text-node-active: #fff;
  --bg-pre: #1e1e2e;
  --border-pre: #313244;
  --text-pre: #cdd6f4;
}

/* Dark theme */
[data-bs-theme="dark"] {
  --bg-body: #000;
  --bg-card: #000;
  --bg-card-hover: #111;
  --bg-input: #1a1a1a;
  --border-color: #222;
  --border-color-strong: #333;
  --border-color-stronger: #444;
  --text-primary: #f9fafb;
  --text-secondary: #d1d5db;
  --text-tertiary: #9ca3af;
  --text-muted: #9ca3af;
  --text-faint: #6b7280;
  --text-link: #60a5fa;
  --bg-navbar: #000;
  --border-navbar: #222;
  --text-navbar: #d1d5db;
  --text-brand: #f9fafb;
  --bg-search-icon: #6b7280;
  --bg-code: #1a1a1a;
  --text-code: #f9a8d4;
  --bg-blockquote: #0a0a0a;
  --border-blockquote: #222;
  --text-blockquote: #9ca3af;
  --bg-btn-outline: #1a1a1a;
  --border-btn-outline: #333;
  --text-btn-outline: #d1d5db;
  --bg-btn-primary: #333;
  --border-btn-primary: #333;
  --text-btn-primary: #f9fafb;
  --bg-btn-outline-hover: #333;
  --border-btn-outline-hover: #444;
  --text-btn-outline-hover: #f9fafb;
  --bg-btn-primary-hover: #444;
  --border-btn-primary-hover: #444;
  --bg-btn-active: #555;
  --border-btn-active: #555;
  --bg-pinned: #1a1200;
  --border-pinned: #f59e0b;
  --bg-mark: #422006;
  --text-mark: #fde68a;
  --border-node-card: #222;
  --border-node-card-hover: #333;
  --bg-node-card-hover: #111;
  --bg-badge-node: #1a1a1a;
  --text-badge-node: #d1d5db;
  --bg-user-header: linear-gradient(135deg, #111 0%, #222 100%);
  --shadow-card: rgba(255,255,255,0.03);
  --shadow-avatar: rgba(255,255,255,0.05);
  --bg-node-active: #333;
  --text-node-active: #f9fafb;
  --bg-pre: #0d1117;
  --border-pre: #21262d;
  --text-pre: #cdd6f4;
}

body {
  background-color: var(--bg-body);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s, color 0.3s;
}

/* Navbar */
.navbar {
  background-color: var(--bg-navbar) !important;
  border-bottom: 1px solid var(--border-navbar);
}
.navbar-brand {
  color: var(--text-brand) !important;
  font-weight: 800;
  letter-spacing: -0.5px;
}
.navbar .nav-link,
.navbar .dropdown-toggle {
  color: var(--text-navbar) !important;
}
.navbar .nav-link:hover,
.navbar .dropdown-toggle:hover {
  color: var(--text-primary) !important;
}

/* Theme toggle button */
.theme-toggle {
  background: none;
  border: 1px solid var(--border-color-strong);
  border-radius: 0.5rem;
  padding: 0.3rem 0.5rem;
  color: var(--text-navbar);
  cursor: pointer;
  transition: all 0.2s;
  font-size: 1rem;
}
.theme-toggle:hover {
  background-color: var(--border-color);
  color: var(--text-primary);
}

/* Search in navbar */
.navbar .input-group-text {
  background-color: var(--bg-input);
  color: var(--bg-search-icon);
  border-color: var(--border-color-strong);
  border-radius: 0.5rem 0 0 0.5rem;
  border-right: none;
}
.navbar .form-control {
  background-color: var(--bg-input);
  color: var(--text-secondary);
  border-color: var(--border-color-strong);
  border-left: none;
  border-radius: 0 0.5rem 0.5rem 0;
}
.navbar .form-control::placeholder {
  color: var(--text-faint);
}

/* Node list sidebar */
.node-list .node-item {
  display: flex;
  align-items: center;
  padding: 0.55rem 0.75rem;
  border-radius: 0.5rem;
  color: var(--text-tertiary);
  text-decoration: none;
  transition: all 0.15s;
  font-size: 0.88rem;
}
.node-list .node-item:hover {
  background-color: var(--border-color);
  color: var(--text-primary);
}
.node-list .node-item.active {
  background-color: var(--bg-node-active);
  color: var(--text-node-active);
}
.node-list .node-item .node-icon {
  font-size: 1.05rem;
  margin-right: 0.5rem;
  flex-shrink: 0;
}
.node-list .node-item .node-count {
  margin-left: auto;
  font-size: 0.72rem;
  color: var(--text-faint);
}
.node-list .node-item.active .node-count {
  color: rgba(255,255,255,0.55);
}
[data-bs-theme="dark"] .node-list .node-item.active .node-count {
  color: rgba(0,0,0,0.45);
}

/* Topic list */
.topic-item {
  display: flex;
  padding: 0.9rem 1rem;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  text-decoration: none;
  color: inherit;
  transition: background-color 0.1s;
}
.topic-item:hover {
  background-color: var(--bg-card-hover);
}
.topic-item:last-child {
  border-bottom: none;
}
.topic-avatar {
  width: 40px;
  height: 40px;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
  font-size: 0.95rem;
}
.topic-body {
  flex: 1;
  margin-left: 0.75rem;
  min-width: 0;
}
.topic-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
  line-height: 1.45;
  text-decoration: none;
}
.topic-title:hover {
  color: var(--text-link);
}
.topic-meta {
  font-size: 0.78rem;
  color: var(--text-faint);
}
.topic-meta a {
  color: var(--text-muted);
  text-decoration: none;
}
.topic-meta strong {
  color: var(--text-secondary);
}
.topic-stats {
  text-align: right;
  flex-shrink: 0;
  margin-left: 0.75rem;
  display: flex;
  align-items: center;
}

/* Cool button */
button.btn.cool-btn {
  background-color: #f1f5f9 !important;
  color: #64748b !important;
  border: 1px solid #e2e8f0 !important;
  transition: all 0.2s ease;
}
button.btn.cool-btn:hover {
  background-color: #e0f2fe !important;
  color: #0284c7 !important;
  border-color: #7dd3fc !important;
}
button.btn.cool-btn.cooled {
  background-color: #0ea5e9 !important;
  color: #fff !important;
  border-color: #0ea5e9 !important;
}
button.btn.cool-btn.cooled:hover {
  background-color: #0284c7 !important;
  border-color: #0284c7 !important;
}
[data-bs-theme="dark"] button.btn.cool-btn {
  background-color: #334155 !important;
  color: #e2e8f0 !important;
  border-color: #475569 !important;
}
[data-bs-theme="dark"] button.btn.cool-btn:hover {
  background-color: #164e63 !important;
  color: #38bdf8 !important;
  border-color: #155e75 !important;
}
[data-bs-theme="dark"] button.btn.cool-btn.cooled {
  background-color: #0ea5e9 !important;
  color: #fff !important;
  border-color: #0ea5e9 !important;
}
[data-bs-theme="dark"] button.btn.cool-btn.cooled:hover {
  background-color: #0284c7 !important;
  border-color: #0284c7 !important;
}

/* Node card buttons */
.node-card-btn {
  transition: all 0.2s ease;
  border-color: var(--border-node-card);
  border-radius: 0.75rem;
}
.node-card-btn:hover {
  border-color: var(--border-node-card-hover);
  background: var(--bg-node-card-hover);
  box-shadow: 0 4px 12px var(--shadow-card);
  transform: translateY(-1px);
}

/* Right sidebar */
.user-card {
  background: var(--bg-card);
  border-radius: 0.75rem;
  overflow: hidden;
  border: 1px solid var(--border-color);
}
.user-card .card-header-bg {
  height: 56px;
  background: var(--bg-user-header);
}
.user-card .avatar-wrapper {
  margin-top: -24px;
  text-align: center;
}
.user-card .user-avatar {
  width: 48px;
  height: 48px;
  border-radius: 0.75rem;
  background: var(--bg-card);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--text-muted);
  font-size: 1.2rem;
  border: 3px solid var(--bg-card);
  box-shadow: 0 2px 8px var(--shadow-avatar);
}
.user-card .user-name {
  font-weight: 600;
  font-size: 0.92rem;
  margin-top: 0.4rem;
  color: var(--text-primary);
}
.user-card .user-role-badge {
  display: inline-block;
}
.user-card .user-stats-row {
  display: flex;
  justify-content: space-around;
  padding: 0.7rem 0;
  border-top: 1px solid var(--border-color);
  margin-top: 0.65rem;
}
.user-card .user-stat {
  text-align: center;
}
.user-card .user-stat-value {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary);
}
.user-card .user-stat-label {
  font-size: 0.72rem;
  color: var(--text-faint);
}

/* Sidebar cards */
.sidebar-card {
  background: var(--bg-card);
  border-radius: 0.75rem;
  border: 1px solid var(--border-color);
}
.sidebar-card .card-header {
  background: transparent;
  border-bottom: 1px solid var(--border-color);
  font-weight: 600;
  font-size: 0.88rem;
  padding: 0.7rem 1rem;
  color: var(--text-primary);
}
.hot-item {
  display: block;
  padding: 0.45rem 1rem;
  color: var(--text-tertiary);
  text-decoration: none;
  font-size: 0.84rem;
  line-height: 1.5;
  transition: background-color 0.1s;
}
.hot-item:hover {
  background-color: var(--bg-card-hover);
  color: var(--text-primary);
}
.hot-item .hot-rank {
  display: inline-block;
  width: 20px;
  height: 20px;
  line-height: 20px;
  text-align: center;
  border-radius: 0.3rem;
  font-size: 0.72rem;
  font-weight: 700;
  margin-right: 0.5rem;
  flex-shrink: 0;
}
.hot-rank.top-1 { background: #ef4444; color: #fff; }
.hot-rank.top-2 { background: #f97316; color: #fff; }
.hot-rank.top-3 { background: #eab308; color: #fff; }

/* Badges for nodes */
.badge-node {
  font-size: 0.7rem;
  padding: 0.15rem 0.4rem;
  border-radius: 0.3rem;
  font-weight: 500;
  background-color: var(--bg-badge-node);
  color: var(--text-badge-node);
}

/* Pinned topic */
.topic-item.pinned {
  background: var(--bg-pinned);
  border-left: 3px solid var(--border-pinned);
}

/* Avatar styles */
.user-avatar {
  width: 48px;
  height: 48px;
  border-radius: 0.75rem;
  background: var(--bg-card);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--text-muted);
  font-size: 1.2rem;
  border: 3px solid var(--bg-card);
  box-shadow: 0 2px 8px var(--shadow-avatar);
}

/* Avatar colors */
.bg-avatar-1 { background: linear-gradient(135deg, #6366f1, #8b5cf6); }
.bg-avatar-2 { background: linear-gradient(135deg, #ec4899, #f43f5e); }
.bg-avatar-3 { background: linear-gradient(135deg, #3b82f6, #06b6d4); }
.bg-avatar-4 { background: linear-gradient(135deg, #10b981, #14b8a6); }
.bg-avatar-5 { background: linear-gradient(135deg, #f97316, #eab308); }

/* Responsive */
@media (max-width: 991.98px) {
  .left-sidebar {
    display: none;
  }
}
@media (max-width: 767.98px) {
  .right-sidebar {
    display: none;
  }
}

/* Search */
.search-form .form-control:focus {
  box-shadow: none;
  border-color: var(--border-color-stronger);
}
.search-form .input-group-text {
  border-radius: 0.5rem 0 0 0.5rem;
  border: 1px solid var(--border-color-strong);
  border-right: none;
}
.search-form .form-control {
  border: 1px solid var(--border-color-strong);
  border-left: none;
  border-radius: 0 0.5rem 0.5rem 0;
}
.search-form .btn {
  border-radius: 0 0.5rem 0.5rem 0;
}
.search-result-item {
  padding: 1.25rem 1rem;
}
.search-result-item .topic-title {
  font-size: 1.02rem;
  margin-bottom: 0.4rem;
  display: block;
  line-height: 1.5;
}
.search-result-item .search-snippet {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 0.4rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.search-result-item mark {
  background-color: var(--bg-mark);
  color: var(--text-mark);
  padding: 0.1em 0.2em;
  border-radius: 2px;
}

/* Markdown body styles */
.markdown-body {
  color: var(--text-secondary);
  word-wrap: break-word;
}
.markdown-body h1, .markdown-body h2, .markdown-body h3,
.markdown-body h4, .markdown-body h5, .markdown-body h6 {
  margin-top: 1.2em;
  margin-bottom: 0.6em;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
}
.markdown-body h1 { font-size: 1.6em; padding-bottom: 0.3em; border-bottom: 1px solid var(--border-color); }
.markdown-body h2 { font-size: 1.4em; padding-bottom: 0.25em; border-bottom: 1px solid var(--border-color); }
.markdown-body h3 { font-size: 1.2em; }
.markdown-body h4 { font-size: 1.05em; }
.markdown-body p { margin-bottom: 0.8em; }
.markdown-body a { color: var(--text-link); text-decoration: none; }
.markdown-body a:hover { text-decoration: underline; }
.markdown-body img { max-width: 100%; height: auto; border-radius: 6px; }
.markdown-body blockquote {
  margin: 0.8em 0;
  padding: 0.6em 1em;
  border-left: 4px solid var(--border-blockquote);
  background: var(--bg-blockquote);
  color: var(--text-blockquote);
  border-radius: 0 6px 6px 0;
}
.markdown-body blockquote p:last-child { margin-bottom: 0; }
.markdown-body code {
  background: var(--bg-code);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.88em;
  font-family: 'JetBrains Mono','Fira Code','Consolas',monospace;
  color: var(--text-code);
}
.markdown-body pre {
  background: var(--bg-pre);
  border-radius: 8px;
  padding: 1em;
  overflow-x: auto;
  margin: 0.8em 0;
  border: 1px solid var(--border-pre);
}
.markdown-body pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  font-size: 0.85em;
  color: var(--text-pre);
}
.markdown-body ul, .markdown-body ol {
  padding-left: 1.8em;
  margin-bottom: 0.8em;
}
.markdown-body li { margin-bottom: 0.3em; }
.markdown-body ul li { list-style-type: disc; }
.markdown-body ol li { list-style-type: decimal; }
.markdown-body hr {
  border: none;
  border-top: 1px solid var(--border-color-strong);
  margin: 1.5em 0;
}
.markdown-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.8em 0;
  font-size: 0.92em;
}
.markdown-body th, .markdown-body td {
  border: 1px solid var(--border-color-strong);
  padding: 0.5em 0.75em;
  text-align: left;
}
.markdown-body th {
  background: var(--bg-code);
  font-weight: 600;
}
.markdown-body tr:nth-child(even) td {
  background: var(--bg-blockquote);
}

/* Buttons - gray default, primary when active/selected */
.btn-outline-primary,
.btn-outline-secondary,
.btn-outline-danger,
.btn-outline-success {
  background-color: var(--bg-btn-outline);
  border-color: var(--border-btn-outline);
  color: var(--text-btn-outline);
}
.btn-outline-primary:hover,
.btn-outline-secondary:hover,
.btn-outline-danger:hover,
.btn-outline-success:hover {
  background-color: var(--bg-btn-outline-hover);
  border-color: var(--border-btn-outline-hover);
  color: var(--text-btn-outline-hover);
}

/* Active/primary buttons */
.btn-primary,
.btn-secondary,
.btn-danger,
.btn-success {
  background-color: var(--bg-btn-primary);
  border-color: var(--border-btn-primary);
  color: var(--text-btn-primary);
}
.btn-primary:hover,
.btn-secondary:hover,
.btn-danger:hover,
.btn-success:hover {
  background-color: var(--bg-btn-primary-hover);
  border-color: var(--border-btn-primary-hover);
  color: var(--text-btn-primary);
}
.btn-primary:focus,
.btn-secondary:focus,
.btn-danger:focus,
.btn-success:focus,
.btn-primary.active,
.btn-secondary.active {
  background-color: var(--bg-btn-active);
  border-color: var(--border-btn-active);
  color: var(--text-btn-primary);
  box-shadow: 0 0 0 0.2rem var(--shadow-card);
}
.btn-primary:not(:disabled):not(.disabled):active,
.btn-secondary:not(:disabled):not(.disabled):active,
.btn-danger:not(:disabled):not(.disabled):active,
.btn-success:not(:disabled):not(.disabled):active,
.btn-outline-primary:not(:disabled):not(.disabled):active,
.btn-outline-secondary:not(:disabled):not(.disabled):active,
.btn-outline-danger:not(:disabled):not(.disabled):active,
.btn-outline-success:not(:disabled):not(.disabled):active {
  background-color: var(--bg-btn-active);
  border-color: var(--border-btn-active);
  color: var(--text-btn-primary);
}
.btn-primary:not(:disabled):not(.disabled):active:focus,
.btn-secondary:not(:disabled):not(.disabled):active:focus,
.btn-danger:not(:disabled):not(.disabled):active:focus,
.btn-success:not(:disabled):not(.disabled):active:focus,
.btn-outline-primary:not(:disabled):not(.disabled):active:focus,
.btn-outline-secondary:not(:disabled):not(.disabled):active:focus,
.btn-outline-danger:not(:disabled):not(.disabled):active:focus,
.btn-outline-success:not(:disabled):not(.disabled):active:focus {
  box-shadow: 0 0 0 0.2rem var(--shadow-card);
}

/* Remove browser tap highlight */
.btn,
a.btn,
a {
  -webkit-tap-highlight-color: transparent;
}

/* Footer */
footer {
  color: var(--text-faint);
}

/* Dropdown menu theme */
.dropdown-item:focus,
.dropdown-item:active {
  background-color: var(--bg-btn-outline-hover);
  color: var(--text-btn-outline-hover);
}
[data-bs-theme="dark"] .dropdown-menu {
  background-color: #1f2937;
  border-color: #374151;
}
[data-bs-theme="dark"] .dropdown-item {
  color: #d1d5db;
}
[data-bs-theme="dark"] .dropdown-item:hover,
[data-bs-theme="dark"] .dropdown-item:focus {
  background-color: #374151;
  color: #f9fafb;
}
[data-bs-theme="dark"] .dropdown-divider {
  border-color: #374151;
}

/* Navbar toggler icon for dark mode */
[data-bs-theme="dark"] .navbar-toggler-icon {
  filter: invert(1) grayscale(100%) brightness(200%);
}

/* Topic comment count badge */
.comment-count-badge {
  background-color: var(--border-color-strong);
  color: #fff;
  font-size: 0.72rem;
  padding: 0.15rem 0.4rem;
  border-radius: 0.2rem;
  font-weight: 600;
  white-space: nowrap;
}
[data-bs-theme="dark"] .comment-count-badge {
  color: #111827;
}

/* Alert theme fix */
[data-bs-theme="dark"] .alert-success {
  background-color: #052e16;
  border-color: #14532d;
  color: #86efac;
}
[data-bs-theme="dark"] .alert-danger {
  background-color: #2a0a0a;
  border-color: #7f1d1d;
  color: #fca5a5;
}

/* Override Bootstrap dark mode variables for pure black */
[data-bs-theme="dark"] {
  --bs-body-bg: #000;
  --bs-body-bg-rgb: 0, 0, 0;
  --bs-card-bg: #000;
  --bs-card-bg-rgb: 0, 0, 0;
  --bs-tertiary-bg: #000;
  --bs-tertiary-bg-rgb: 0, 0, 0;
  --bs-secondary-bg: #111;
  --bs-secondary-bg-rgb: 17, 17, 17;
  --bs-emphasis-color: #fff;
  --bs-secondary-color: #9ca3af;
  --bs-border-color: #222;
  --bs-border-color-translucent: rgba(255,255,255,0.1);
  --bs-secondary-bg: #111;
  --bs-secondary-bg-rgb: 17, 17, 17;
  --bs-tertiary-bg: #000;
  --bs-tertiary-bg-rgb: 0, 0, 0;
  --bs-primary-bg-subtle: #1a1a2e;
  --bs-secondary-bg-subtle: #111;
  --bs-success-bg-subtle: #052e16;
  --bs-danger-bg-subtle: #2a0a0a;
}

/* Override Bootstrap utility classes for dark mode */
[data-bs-theme="dark"] .bg-white {
  background-color: #000 !important;
}
[data-bs-theme="dark"] .bg-light {
  background-color: #111 !important;
}
[data-bs-theme="dark"] .text-dark {
  color: #f9fafb !important;
}
[data-bs-theme="dark"] .border-bottom {
  border-color: #222 !important;
}
[data-bs-theme="dark"] .border-top {
  border-color: #222 !important;
}

/* Transition for theme switch */
body, .navbar, .user-card, .sidebar-card, .topic-item,
.node-card-btn, .btn, .card {
  transition: background-color 0.3s, border-color 0.3s, color 0.3s;
}