:root {
  --rpg-bg: #1a1625;
  --rpg-surface: #252038;
  --rpg-surface-2: #2d2740;
  --rpg-border: #3d3650;
  --rpg-text: #e8e0f0;
  --rpg-text-dim: #a098b0;
  --rpg-primary: #b388ff;
  --rpg-primary-dim: #8a65d0;
  --rpg-accent: #ffb74d;
  --rpg-accent-dim: #d49a3e;
  --rpg-success: #66bb6a;
  --rpg-error: #ef5350;
  --rpg-pending: #ffa726;
  --rpg-radius: 10px;
  --rpg-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

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

body {
  background: var(--rpg-bg);
  color: var(--rpg-text);
  font-family: 'Georgia', 'Palatino', 'Times New Roman', serif;
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
}

/* === NAV === */
.rpg-nav {
  background: var(--rpg-surface);
  border-bottom: 1px solid var(--rpg-border);
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--rpg-shadow);
}
.rpg-nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--rpg-primary);
  text-decoration: none;
  letter-spacing: 0.5px;
}
.rpg-nav-brand .icon { font-size: 1.4rem; }
.rpg-nav-links { display: flex; gap: 1rem; align-items: center; }
.rpg-nav-links a { color: var(--rpg-text-dim); text-decoration: none; transition: color 0.2s; }
.rpg-nav-links a:hover { color: var(--rpg-primary); }

/* === LAYOUT === */
.rpg-main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.rpg-page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  gap: 1rem;
  flex-wrap: wrap;
}
.rpg-page-title {
  font-size: 1.8rem;
  color: var(--rpg-text);
}
.rpg-page-title .icon { margin-right: 0.5rem; }

/* === CARDS === */
.rpg-card {
  background: var(--rpg-surface);
  border: 1px solid var(--rpg-border);
  border-radius: var(--rpg-radius);
  padding: 1.5rem;
  box-shadow: var(--rpg-shadow);
  margin-bottom: 1rem;
  transition: border-color 0.2s, transform 0.1s;
}
.rpg-card:hover {
  border-color: var(--rpg-primary-dim);
}
.rpg-card a {
  color: var(--rpg-primary);
  text-decoration: none;
}
.rpg-card a:hover { text-decoration: underline; }

.rpg-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

/* === COLLECTION CARD === */
.rpg-collection-card {
  background: var(--rpg-surface);
  border: 1px solid var(--rpg-border);
  border-radius: var(--rpg-radius);
  padding: 1.5rem;
  box-shadow: var(--rpg-shadow);
  transition: border-color 0.2s, transform 0.15s;
  position: relative;
  overflow: hidden;
}
.rpg-collection-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--rpg-primary), var(--rpg-accent));
}
.rpg-collection-card:hover {
  border-color: var(--rpg-primary-dim);
  transform: translateY(-2px);
}
.rpg-collection-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}
.rpg-collection-card h3 a { color: var(--rpg-text); text-decoration: none; }
.rpg-collection-card h3 a:hover { color: var(--rpg-primary); }
.rpg-collection-card .meta { font-size: 0.85rem; color: var(--rpg-text-dim); }

/* === FORMS === */
.rpg-input, input[type="text"], input[type="password"], input[type="file"] {
  background: var(--rpg-surface-2);
  border: 1px solid var(--rpg-border);
  border-radius: 6px;
  padding: 0.6rem 0.8rem;
  color: var(--rpg-text);
  font-size: 1rem;
  width: 100%;
  font-family: inherit;
  transition: border-color 0.2s;
}
.rpg-input:focus, input[type="text"]:focus, input[type="password"]:focus {
  outline: none;
  border-color: var(--rpg-primary);
}
.rpg-label, label {
  display: block;
  margin-bottom: 0.3rem;
  font-size: 0.9rem;
  color: var(--rpg-text-dim);
}

.rpg-btn, button, .rpg-btn-secondary {
  background: var(--rpg-primary);
  color: #1a1625;
  border: none;
  border-radius: 6px;
  padding: 0.6rem 1.2rem;
  font-size: 0.95rem;
  font-weight: bold;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.2s, opacity 0.2s;
  text-decoration: none;
  display: inline-block;
}
.rpg-btn:hover, button:hover {
  background: var(--rpg-primary-dim);
  color: #fff;
}
.rpg-btn:disabled, button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}
.rpg-btn-loading {
  pointer-events: none;
  opacity: 0.4;
  cursor: not-allowed;
}
.rpg-btn-secondary, .rpg-btn-outline {
  background: transparent;
  border: 1px solid var(--rpg-border);
  color: var(--rpg-text-dim);
}
.rpg-btn-secondary:hover, .rpg-btn-outline:hover {
  background: var(--rpg-surface-2);
  border-color: var(--rpg-primary-dim);
  color: var(--rpg-text);
}
.rpg-btn-danger {
  background: transparent;
  border: 1px solid var(--rpg-error);
  color: var(--rpg-error);
}
.rpg-btn-danger:hover {
  background: var(--rpg-error);
  color: #fff;
}
.rpg-btn-sm {
  padding: 0.3rem 0.7rem !important;
  font-size: 0.8rem !important;
}
.rpg-card-actions {
  margin-top: 0.8rem;
  display: flex;
  gap: 0.4rem;
}

/* === INLINE FORM === */
.rpg-inline-form {
  display: flex;
  gap: 0.5rem;
  align-items: flex-end;
  flex-wrap: wrap;
}
.rpg-inline-form input { flex: 1; min-width: 200px; }

/* === TABLE === */
.rpg-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1rem;
}
.rpg-table th {
  text-align: left;
  padding: 0.6rem 0.8rem;
  border-bottom: 2px solid var(--rpg-border);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--rpg-text-dim);
}
.rpg-table td {
  padding: 0.7rem 0.8rem;
  border-bottom: 1px solid var(--rpg-border);
}
.rpg-table tr:hover td { background: var(--rpg-surface-2); }

/* === STATUS BADGES === */
.rpg-badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: bold;
  font-family: 'Inter', sans-serif;
}
.rpg-badge-done { background: rgba(102,187,106,0.2); color: var(--rpg-success); }
.rpg-badge-queued { background: rgba(255,167,38,0.2); color: var(--rpg-pending); }
.rpg-badge-processing, .rpg-badge-extracting, .rpg-badge-structuring, .rpg-badge-tiering, .rpg-badge-enriching, .rpg-badge-indexing {
  background: rgba(255,167,38,0.15); color: var(--rpg-pending);
}
.rpg-badge-failed { background: rgba(239,83,80,0.2); color: var(--rpg-error); }

/* === ENRICH PROGRESS BAR === */
.rpg-enrich-bar {
  width: 100%;
  height: 4px;
  background: var(--rpg-surface-2);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 3px;
}
.rpg-enrich-fill {
  height: 100%;
  background: var(--rpg-pending);
  border-radius: 2px;
  transition: width 0.3s;
}

/* === BOOK GRID === */
.rpg-book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}
.rpg-book-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.rpg-book-cover-link {
  display: block;
  text-decoration: none;
}
.rpg-book-cover {
  position: relative;
  aspect-ratio: 3/4;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--rpg-border);
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
  transition: border-color 0.2s, transform 0.15s;
}
.rpg-book-cover:hover {
  border-color: var(--rpg-primary);
  transform: translateY(-2px);
}
.rpg-book-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.rpg-book-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.85));
  padding: 0.8rem 0.5rem 0.5rem;
  text-align: center;
}
.rpg-book-progress {
  font-size: 0.75rem;
  color: var(--rpg-pending);
  display: block;
  margin-top: 2px;
}
.rpg-book-info {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.rpg-book-title {
  font-size: 0.9rem;
  color: var(--rpg-text);
  text-decoration: none;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.rpg-book-title:hover { color: var(--rpg-primary); }
.rpg-book-actions {
  display: flex;
  gap: 0.3rem;
}

/* === CHAT === */
.rpg-chat-log { margin-bottom: 1.5rem; }
.rpg-chat-turn {
  margin-bottom: 1.5rem;
  padding: 1.2rem;
  border-radius: var(--rpg-radius);
  border: 1px solid var(--rpg-border);
}
.rpg-chat-user {
  background: var(--rpg-surface-2);
  border-left: 3px solid var(--rpg-primary);
}
.rpg-chat-agent {
  background: var(--rpg-surface);
  border-left: 3px solid var(--rpg-accent);
}
.rpg-chat-turn .role {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
}
.rpg-chat-user .role { color: var(--rpg-primary); }
.rpg-chat-agent .role { color: var(--rpg-accent); }
.rpg-chat-turn p { margin-bottom: 0.5rem; }
.rpg-chat-answer { line-height: 1.7; }
.rpg-chat-answer p { margin-bottom: 0.5rem; }

/* === CITATIONS === */
.rpg-cites {
  margin-top: 0.8rem;
  padding-top: 0.8rem;
  border-top: 1px dashed var(--rpg-border);
}
.rpg-cites-title { font-size: 0.8rem; color: var(--rpg-text-dim); margin-bottom: 0.5rem; }
.rpg-cite {
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
  padding: 0.4rem 0.6rem;
  background: rgba(0,0,0,0.15);
  border-radius: 6px;
  border-left: 2px solid var(--rpg-primary-dim);
}
.rpg-cite-link {
  color: var(--rpg-primary);
  text-decoration: none;
  font-weight: 600;
}
.rpg-cite-link:hover { text-decoration: underline; color: var(--rpg-accent); }
.rpg-cite-quote {
  margin-top: 0.3rem;
  font-style: italic;
  color: var(--rpg-text-dim);
  font-size: 0.82rem;
  padding-left: 1rem;
  border-left: 2px solid var(--rpg-border);
}

/* === UPLOAD OVERLAY === */
.rpg-upload-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}
.rpg-upload-card {
  background: var(--rpg-surface);
  border: 1px solid var(--rpg-border);
  border-radius: var(--rpg-radius);
  padding: 2rem 3rem;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

/* === SPINNER === */
.rpg-spinner {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 1rem;
  margin-bottom: 1rem;
}
.htmx-indicator {
  display: none;
}
.htmx-request .htmx-indicator,
.htmx-indicator.htmx-request {
  display: flex;
}
.rpg-spinner-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--rpg-primary);
  animation: rpg-bounce 1.4s infinite ease-in-out both;
}
.rpg-spinner-dot:nth-child(1) { animation-delay: -0.32s; }
.rpg-spinner-dot:nth-child(2) { animation-delay: -0.16s; }
.rpg-spinner-text { color: var(--rpg-text-dim); font-size: 0.9rem; margin-left: 0.5rem; }
@keyframes rpg-bounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.5; }
  40% { transform: scale(1); opacity: 1; }
}

.rpg-chat-form {
  display: flex;
  gap: 0.5rem;
  position: sticky;
  bottom: 1rem;
  background: var(--rpg-bg);
  padding: 0.5rem 0;
}
.rpg-chat-form input { flex: 1; }

/* === TREE === */
.rpg-tree { list-style: none; padding-left: 0; }
.rpg-tree ul { list-style: none; padding-left: 1.5rem; }
.rpg-tree li {
  padding: 0.3rem 0;
  position: relative;
}
.rpg-tree li::before {
  content: '';
  position: absolute;
  left: -1rem;
  top: 0.8rem;
  width: 0.8rem;
  height: 1px;
  background: var(--rpg-border);
}
.rpg-tree a { color: var(--rpg-primary); text-decoration: none; }
.rpg-tree a:hover { text-decoration: underline; }
.rpg-tree-icon { margin-right: 0.3rem; }

/* === DOC VIEWER === */
.rpg-doc-content {
  background: var(--rpg-surface);
  border: 1px solid var(--rpg-border);
  border-radius: var(--rpg-radius);
  padding: 1.5rem;
  white-space: pre-wrap;
  font-family: 'Georgia', serif;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--rpg-text);
}

/* === UPLOAD DROPZONE === */
.rpg-dropzone {
  border: 2px dashed var(--rpg-border);
  border-radius: var(--rpg-radius);
  padding: 3rem 2rem;
  text-align: center;
  background: var(--rpg-surface);
  transition: border-color 0.2s, background 0.2s;
  cursor: pointer;
  margin-bottom: 1rem;
}
.rpg-dropzone:hover {
  border-color: var(--rpg-primary);
  background: var(--rpg-surface-2);
}
.rpg-dropzone .icon { font-size: 3rem; margin-bottom: 1rem; display: block; }
.rpg-dropzone .hint { color: var(--rpg-text-dim); font-size: 0.9rem; }

/* === MISC === */
.rpg-empty {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--rpg-text-dim);
}
.rpg-empty .icon { font-size: 3rem; display: block; margin-bottom: 1rem; opacity: 0.5; }
.rpg-breadcrumb { margin-bottom: 1rem; font-size: 0.9rem; color: var(--rpg-text-dim); }
.rpg-breadcrumb a { color: var(--rpg-primary-dim); text-decoration: none; }
.rpg-breadcrumb a:hover { text-decoration: underline; }
.rpg-breadcrumb .sep { margin: 0 0.3rem; opacity: 0.5; }
.rpg-meta { color: var(--rpg-text-dim); font-size: 0.85rem; margin-bottom: 0.5rem; }
.rpg-error { color: var(--rpg-error); font-size: 0.9rem; margin-bottom: 1rem; }
.rpg-success-msg { color: var(--rpg-success); font-size: 0.9rem; }

/* === LOGIN === */
.rpg-login-card {
  max-width: 400px;
  margin: 4rem auto;
}
.rpg-login-card h2 { text-align: center; margin-bottom: 1.5rem; }
.rpg-login-card .icon { display: block; text-align: center; font-size: 3rem; margin-bottom: 1rem; }

/* === STORAGE BAR === */
.rpg-storage-bar { margin-bottom: 1.5rem; }
.rpg-storage-label { font-size: 0.85rem; color: var(--rpg-text-dim); margin-bottom: 0.3rem; }
.rpg-storage-track {
  width: 100%;
  height: 8px;
  background: var(--rpg-surface-2);
  border-radius: 4px;
  overflow: hidden;
}
.rpg-storage-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.3s;
  background: var(--rpg-success);
}
.rpg-storage-fill.warn { background: var(--rpg-pending); }
.rpg-storage-fill.full { background: var(--rpg-error); }
.rpg-storage-warn {
  margin-top: 0.4rem;
  font-size: 0.8rem;
  color: var(--rpg-error);
}

/* === SUGGESTIONS === */
.rpg-suggestions {
  margin-top: 0.8rem;
  padding-top: 0.8rem;
  border-top: 1px dashed var(--rpg-border);
}
.rpg-suggestions-title {
  font-size: 0.8rem;
  color: var(--rpg-text-dim);
  margin-bottom: 0.5rem;
}
.rpg-suggestion-btn {
  display: block;
  width: 100%;
  text-align: left;
  background: var(--rpg-surface-2);
  border: 1px solid var(--rpg-border);
  border-radius: 6px;
  padding: 0.5rem 0.8rem;
  margin-bottom: 0.4rem;
  color: var(--rpg-text);
  font-family: inherit;
  font-size: 0.9rem;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.rpg-suggestion-btn:hover {
  border-color: var(--rpg-primary);
  background: rgba(179,136,255,0.1);
  color: var(--rpg-primary);
}
.rpg-suggestion-btn::before {
  content: "\2794  ";
  opacity: 0.5;
}

/* === MARKDOWN RENDERING === */
.rpg-chat-answer p, .rpg-doc-content p { margin-bottom: 0.7rem; }
.rpg-chat-answer ul, .rpg-chat-answer ol, .rpg-doc-content ul, .rpg-doc-content ol {
  margin-left: 1.5rem; margin-bottom: 0.7rem;
}
.rpg-chat-answer li, .rpg-doc-content li { margin-bottom: 0.3rem; }
.rpg-chat-answer strong, .rpg-doc-content strong { color: var(--rpg-accent); }
.rpg-chat-answer code, .rpg-doc-content code {
  background: rgba(0,0,0,0.3); padding: 0.1rem 0.3rem; border-radius: 3px;
  font-family: 'Courier New', monospace; font-size: 0.9em;
}
.rpg-chat-answer h1, .rpg-chat-answer h2, .rpg-chat-answer h3,
.rpg-doc-content h1, .rpg-doc-content h2, .rpg-doc-content h3 {
  margin-top: 1rem; margin-bottom: 0.5rem; color: var(--rpg-text);
}
.rpg-doc-content {
  background: var(--rpg-surface);
  border: 1px solid var(--rpg-border);
  border-radius: var(--rpg-radius);
  padding: 1.5rem;
  font-family: 'Georgia', serif;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--rpg-text);
}
.rpg-doc-content pre {
  background: rgba(0,0,0,0.3); padding: 1rem; border-radius: 6px;
  overflow-x: auto; margin-bottom: 0.7rem;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .rpg-main { padding: 1rem; }
  .rpg-page-header { flex-direction: column; align-items: flex-start; }
  .rpg-card-grid { grid-template-columns: 1fr; }
  .rpg-table { font-size: 0.85rem; }
  .rpg-nav { padding: 0.5rem 1rem; }

/* === NAV EXTRAS === */
.rpg-nav-github {
  display: inline-flex;
  align-items: center;
  opacity: 0.5;
  transition: opacity 0.2s;
}
.rpg-nav-github:hover { opacity: 1; }
.rpg-nav-github svg {
  width: 18px;
  height: 18px;
  fill: var(--rpg-text);
}
.rpg-nav-version {
  font-size: 0.7rem;
  color: var(--rpg-text-dim);
  opacity: 0.5;
  padding: 0.1rem 0.35rem;
  background: var(--rpg-surface);
  border-radius: 3px;
  border: 1px solid var(--rpg-border);
}