:root {
  --bg-main: #0d1117;
  --bg-card: #161b22;
  --bg-input: #21262d;
  --bg-hover: #30363d;
  --border: #30363d;
  --border-focus: #58a6ff;
  --text-main: #f0f6fc;
  --text-muted: #8b949e;
  --accent: #2f81f7;
  --accent-hover: #388bfd;
  --accent-light: rgba(56, 139, 253, 0.15);
  --success: #238636;
  --danger: #da3633;
  --radius: 12px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", Consolas, Monaco, monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font);
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-layout {
  display: flex;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

.main-content {
  flex: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px;
  width: 100%;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, #1f6feb 0%, #8957e5 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 16px rgba(31, 111, 235, 0.35);
}

.app-header h1 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.subtitle {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.header-badges {
  display: flex;
  align-items: center;
  gap: 12px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

.docker-badge {
  background: rgba(36, 150, 237, 0.15);
  color: #58a6ff;
  border: 1px solid rgba(56, 139, 253, 0.3);
}

/* Cards */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

/* Input Card */
.input-card {
  margin-bottom: 24px;
}

.url-input-container {
  display: flex;
  align-items: center;
  background-color: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 6px 10px;
  gap: 10px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.url-input-container:focus-within {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.2);
}

.input-prefix {
  color: var(--text-muted);
  display: flex;
  align-items: center;
}

.url-input-container input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-main);
  font-size: 0.95rem;
  font-family: var(--font);
}

.input-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

.sample-links {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
}

.sample-label {
  color: var(--text-muted);
}

.pill-btn {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 4px 10px;
  border-radius: 14px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
}

.pill-btn:hover {
  background: var(--bg-hover);
  border-color: var(--border-focus);
}

.mode-selector {
  display: flex;
  gap: 16px;
  font-size: 0.85rem;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  color: var(--text-muted);
}

.radio-label input:checked + span {
  color: var(--text-main);
  font-weight: 500;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 8px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s;
  font-family: var(--font);
}

.btn-primary {
  background-color: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background-color: var(--accent-hover);
}

.btn-secondary {
  background-color: var(--bg-input);
  border-color: var(--border);
  color: var(--text-main);
}

.btn-secondary:hover {
  background-color: var(--bg-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
}

.btn-ghost:hover {
  color: var(--text-main);
  background: var(--bg-hover);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.8rem;
}

.btn-icon {
  padding: 6px;
  border-radius: 6px;
}

/* Status Banner */
.status-banner {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--accent-light);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 24px;
}

.status-spinner {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(88, 166, 255, 0.3);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s infinite linear;
}

.btn-spinner {
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 1s infinite linear;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.status-title {
  font-weight: 600;
  font-size: 0.95rem;
}

.status-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Meta Card */
.meta-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  margin-bottom: 20px;
}

.author-profile {
  display: flex;
  align-items: center;
  gap: 14px;
}

.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border);
}

.author-meta h2 {
  font-size: 1.1rem;
  font-weight: 600;
}

.author-handle {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.85rem;
}

.author-handle:hover {
  text-decoration: underline;
}

.thread-stats {
  display: flex;
  gap: 20px;
}

.stat-box {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.stat-number {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Action Bar */
.action-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

.tab-group {
  display: flex;
  gap: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 4px;
  border-radius: 8px;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 6px 14px;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font);
}

.tab-btn.active {
  background: var(--bg-hover);
  color: var(--text-main);
}

.export-group {
  display: flex;
  align-items: center;
  gap: 8px;
  position: relative;
}

/* Dropdown */
.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
  display: none;
  flex-direction: column;
  min-width: 220px;
  z-index: 100;
  overflow: hidden;
}

.dropdown-menu.show {
  display: flex;
}

.dropdown-item {
  padding: 10px 14px;
  color: var(--text-main);
  text-decoration: none;
  font-size: 0.85rem;
  transition: background 0.2s;
}

.dropdown-item:hover {
  background: var(--bg-hover);
}

/* Views */
.view-card {
  min-height: 400px;
}

.reader-typography {
  font-size: 1.1rem;
  line-height: 1.7;
  color: #e6edf3;
}

.reader-typography h1, 
.reader-typography h2 {
  margin: 1.5rem 0 1rem;
  font-weight: 600;
}

.reader-typography p {
  margin-bottom: 1.25rem;
}

.reader-typography ul {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.reader-typography li {
  margin-bottom: 0.5rem;
}

.reader-typography hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

.reader-typography img {
  max-width: 100%;
  border-radius: 10px;
  margin: 1rem 0;
}

/* Markdown view */
#view-markdown pre {
  background: var(--bg-input);
  padding: 18px;
  border-radius: 8px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.5;
  color: #c9d1d9;
}

/* Segments breakdown */
.segment-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 14px;
  background: var(--bg-input);
}

.segment-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.segment-num {
  font-weight: 600;
  color: var(--accent);
}

.segment-text {
  font-size: 0.95rem;
  line-height: 1.5;
  white-space: pre-wrap;
}

/* Library Sidebar */
.library-sidebar {
  position: fixed;
  top: 0;
  right: -360px;
  width: 340px;
  height: 100vh;
  background: var(--bg-card);
  border-left: 1px solid var(--border);
  box-shadow: -4px 0 24px rgba(0,0,0,0.4);
  transition: right 0.3s ease;
  z-index: 200;
  display: flex;
  flex-direction: column;
}

.library-sidebar.open {
  right: 0;
}

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  border-bottom: 1px solid var(--border);
}

.sidebar-search {
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
}

.sidebar-search input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.85rem;
  outline: none;
}

.sidebar-list {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
}

.history-item {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 10px;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.history-item:hover {
  border-color: var(--border-focus);
  background: var(--bg-hover);
}

.history-item-title {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.history-item-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
}

.empty-state {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 30px 0;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: #238636;
  color: #fff;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
  z-index: 999;
  transition: opacity 0.3s;
}

.hidden {
  display: none !important;
}