:root {
    --bg: #f5f5f5;
    --card-bg: #ffffff;
    --text: #2c2c2c;
    --accent: #3b6cb4;
    --border: #ccc;
    --danger: #c62828;
    --success: #2e7d32;
    --preview-bg: #f0f4f8;
    --disabled: #b0b0b0;
    --warn: #e67e22;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg); color: var(--text);
    padding: 1rem; display: flex; flex-direction: column; align-items: center;
}
.container {
    width: 100%; max-width: 1200px; display: flex; flex-wrap: wrap;
    gap: 1rem; margin-top: 1rem;
}
.panel {
    background: var(--card-bg); border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1); padding: 1rem;
}
.list-panel { flex: 1 1 350px; max-height: 85vh; overflow-y: auto; }
.edit-panel { flex: 2 1 500px; }

h1 { margin-bottom: 0.5rem; }
h2 {
    margin-bottom: 0.8rem; font-size: 1.3rem;
    border-bottom: 2px solid var(--accent); padding-bottom: 0.3rem;
}
button {
    background: var(--accent); color: white; border: none;
    padding: 0.4rem 0.8rem; border-radius: 6px; cursor: pointer;
    font-weight: 600; margin: 0.2rem; transition: 0.2s; font-size: 0.9rem;
}
button:hover:not(:disabled) { opacity: 0.9; }
button:disabled { background: var(--disabled); cursor: not-allowed; opacity: 0.7; }
button.danger { background: var(--danger); }
button.small { padding: 0.2rem 0.5rem; font-size: 0.8rem; }
button.secondary { background: #757575; }
button.active-toggle { background: var(--success); }
button.warn { background: var(--warn); }
input, textarea, select {
    width: 100%; padding: 0.4rem; margin: 0.2rem 0 0.5rem;
    border: 1px solid var(--border); border-radius: 6px;
    font-size: 0.9rem; font-family: inherit;
}
label {
    font-weight: 600; font-size: 0.9rem;
    display: flex; align-items: center; gap: 0.3rem;
}
.preview-toggle {
    background: none; border: none; cursor: pointer;
    font-size: 1.1rem; padding: 0; color: var(--accent);
}
.readonly-row { display: flex; gap: 1rem; margin-bottom: 0.5rem; }
.readonly-row div { flex: 1; }
.readonly-row input, input[readonly] {
    background-color: #f0f0f0; color: #666; margin: 0.2rem 0 0.3rem;
}
.card-item {
    padding: 0.2rem 0.3rem; border: 1px solid var(--border);
    border-radius: 4px; margin-bottom: 0.1rem; cursor: pointer;
    display: flex; align-items: center; gap: 0.3rem;
    font-size: 0.85rem; height: 2rem;
    border-left: 4px solid transparent;
}
.card-item input[type="checkbox"] {
    width: 1rem; height: 1rem; margin: 0; padding: 0; flex-shrink: 0;
}
.card-item span {
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis; flex: 1;
}
.card-item:hover { background: #eef; }
.card-item.active { background: #dde; border-color: var(--accent); }

/* Indicadores de nivel por color de borde izquierdo */
.lv-color-1 { border-left-color: #a5d6a7; }
.lv-color-2 { border-left-color: #90caf9; }
.lv-color-3 { border-left-color: #ffcc80; }
.lv-color-4 { border-left-color: #ce93d8; }
.lv-color-5 { border-left-color: #80cbc4; }
.lv-color-6 { border-left-color: #ef9a9a; }
.lv-color-7 { border-left-color: #81d4fa; }
.lv-color-8 { border-left-color: #c5e1a5; }
.lv-color-9 { border-left-color: #b0bec5; }

.level-header {
    background: #eef; padding: 0.4rem; border-radius: 6px;
    margin-bottom: 0.3rem; display: flex; justify-content: space-between;
    align-items: center; cursor: pointer; font-weight: 600;
    flex-wrap: wrap; gap: 0.3rem;
}
.level-header-main {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    flex: 1;
    min-width: 0;
}
.level-header-main span {
    cursor: pointer;
    flex: 1;
    min-width: 0;
}
.level-edit-btn {
    background: none;
    border: none;
    color: var(--accent);
    cursor: pointer;
    font-size: 0.9rem;
    padding: 0.1rem 0.3rem;
    margin: 0;
}
.level-edit-btn:hover {
    background: #dde;
    border-radius: 4px;
}
.level-editor {
    width: 100%;
    background: #f8f8f8;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.5rem;
    margin-top: 0.3rem;
}
.level-editor-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.level-editor-row label {
    font-weight: 500;
    font-size: 0.8rem;
    margin: 0;
    white-space: nowrap;
}
.level-editor-row input {
    width: 70px;
    padding: 0.2rem 0.4rem;
    margin: 0;
    font-size: 0.85rem;
    text-align: center;
}
.level-editor-actions {
    display: flex;
    gap: 0.3rem;
    margin-top: 0.4rem;
}
.create-level-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.3rem;
    padding: 0.3rem;
    background: #f0f8f0;
    border-radius: 6px;
    border: 1px dashed #a5d6a7;
}
.create-level-row input {
    width: 70px;
    padding: 0.2rem 0.4rem;
    font-size: 0.85rem;
    text-align: center;
}
.create-level-row label {
    font-weight: 500;
    font-size: 0.8rem;
    margin: 0;
}

.level-actions { display: flex; gap: 0.3rem; align-items: center; }
.toolbar {
    display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center;
    margin-bottom: 0.8rem;
}
.tag-list { display: flex; flex-wrap: wrap; gap: 0.3rem; margin: 0.2rem 0 0.5rem; }
.tag-item {
    background: #e0e0e0; padding: 0.2rem 0.5rem; border-radius: 4px;
    display: flex; align-items: center; gap: 0.3rem; font-size: 0.85rem;
}
.tag-item button {
    background: none; border: none; color: #555;
    font-weight: bold; cursor: pointer;
}
.add-tag { display: flex; gap: 0.3rem; }
.add-tag input { flex: 1; margin: 0; }
.status { font-size: 0.85rem; color: #555; margin-top: 0.5rem; }
.dirty-indicator { color: var(--warn); font-weight: 600; margin-left: 0.5rem; }
.preview-box {
    background: #fafafa; border: 1px solid var(--border);
    border-radius: 6px; padding: 0.5rem; margin: 0.2rem 0 0.5rem;
    min-height: 2.5rem;
    line-height: 1.5;
}
.preview-live {
    background: var(--preview-bg); border: 1px dashed var(--accent);
    border-radius: 6px; padding: 0.5rem; margin: 0.2rem 0 0.5rem;
    min-height: 2rem; font-size: 0.9rem;
    line-height: 1.5;
}

/* ========== ESTILOS MARKDOWN UNIFICADOS (editor + app) ========== */

.preview-live p, .preview-box p {
    margin-bottom: 0.8rem;
}

.preview-live h1, .preview-box h1,
.preview-live h2, .preview-box h2,
.preview-live h3, .preview-box h3,
.preview-live h4, .preview-box h4,
.preview-live h5, .preview-box h5,
.preview-live h6, .preview-box h6 {
    margin-top: 1.2rem;
    margin-bottom: 0.6rem;
}

.preview-live ul, .preview-box ul,
.preview-live ol, .preview-box ol {
    padding-left: 1.5rem;
    margin-bottom: 0.8rem;
}

.preview-live li, .preview-box li {
    margin-bottom: 0.3rem;
}

.preview-live ul ul, .preview-box ul ul,
.preview-live ol ol, .preview-box ol ol,
.preview-live ul ol, .preview-box ul ol,
.preview-live ol ul, .preview-box ol ul {
    margin-top: 0.3rem;
    margin-bottom: 0.3rem;
}

.preview-live blockquote, .preview-box blockquote {
    border-left: 3px solid var(--accent);
    padding: 0.4rem 0.8rem;
    margin: 0.8rem 0;
    background: #f0f3f6;
    border-radius: 0 6px 6px 0;
}

.preview-live pre, .preview-box pre {
    background: #f0f3f6;
    padding: 0.8rem;
    border-radius: 6px;
    overflow-x: auto;
    margin: 0.8rem 0;
    font-size: 0.85rem;
}

.preview-live code, .preview-box code {
    background: #f0f3f6;
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    font-size: 0.85rem;
}

.preview-live pre code, .preview-box pre code {
    background: none;
    padding: 0;
}

.preview-live img, .preview-box img {
    display: block;
    margin: 0.8rem auto;
    max-width: 100%;
    height: auto;
    border-radius: 6px;
}

.preview-live table, .preview-box table {
    width: 100%;
    border-collapse: collapse;
    margin: 0.8rem 0;
}

.preview-live th, .preview-box th,
.preview-live td, .preview-box td {
    padding: 0.3rem 0.5rem;
    border-bottom: 1px solid #f0f0f0;
    font-size: 0.9rem;
    text-align: left;
}

.preview-live th, .preview-box th {
    font-weight: 500;
    color: #555;
}

/* ========== FIN ESTILOS MARKDOWN ========== */

/* Fuente KaTeX en vistas previas */
.preview-live .katex,
.preview-box .katex {
    font-family: KaTeX_Main, KaTeX_Math, serif;
}

.batch-bar {
    display: flex; gap: 0.3rem; align-items: center;
    margin: 0.5rem 0; flex-wrap: wrap;
}
.modal {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.4); display: flex; justify-content: center;
    align-items: center; z-index: 1000;
}
.modal-content {
    background: white; padding: 2rem; border-radius: 12px;
    max-width: 700px; text-align: center; max-height: 80vh;
    overflow-y: auto;
}
.hidden { display: none !important; }
.error-list { text-align: left; margin-top: 1rem; font-size: 0.9rem; color: var(--danger); }
.warning-list { text-align: left; margin-top: 1rem; font-size: 0.9rem; color: var(--warn); }
.undo-redo-btn { font-size: 1.2rem; padding: 0.3rem 0.6rem; }
.hash-info {
    margin-top: 0.5rem; font-size: 0.8rem; color: #555;
    word-break: break-all; font-family: monospace;
}
/* Pestañas */
.tabs {
    display: flex; gap: 0; margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--border);
}
.tab {
    padding: 0.6rem 1.2rem; cursor: pointer;
    background: none; border: none; font-weight: 600;
    color: #777; font-size: 1rem;
    border-bottom: 3px solid transparent;
    transition: all 0.2s; margin: 0;
}
.tab:hover { color: var(--accent); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-content { display: none; }
.tab-content.active {
    display: block;
    align-self: stretch;
}
/* Paneles anchos para Tags y Páginas */
.wide-container {
    display: flex; gap: 1rem; width: 100%; max-width: 1200px;
}
.narrow-list {
    width: 250px; flex-shrink: 0; max-height: 85vh; overflow-y: auto;
    background: var(--card-bg); border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1); padding: 1rem;
}
.wide-edit {
    flex: 1; min-width: 0;
    background: var(--card-bg); border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1); padding: 1rem;
}
/* Banner de error */
.error-banner {
    background: #ffebee; color: #b71c1c; padding: 0.8rem; border-radius: 8px;
    margin-bottom: 1rem; font-size: 0.85rem; white-space: pre-wrap; word-break: break-word;
    display: none;
}
/* Banner de éxito (éxito) */
.success-banner {
    background: #e8f5e9; color: #2e7d32; padding: 0.8rem; border-radius: 8px;
    margin-bottom: 1rem; font-size: 0.85rem; white-space: pre-wrap; word-break: break-word;
    display: none;
}

/* Barra de herramientas Markdown */
.markdown-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.2rem;
    margin-bottom: 0.3rem;
}
.markdown-toolbar button {
    background: #eef;
    color: #333;
    border: 1px solid #ccc;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    line-height: 1;
    min-width: 2rem;
    text-align: center;
    transition: background 0.15s;
}
.markdown-toolbar button:hover {
    background: #dde;
}
.markdown-toolbar button:active {
    background: #ccd;
}
/* Panel de búsqueda */
.search-panel {
    display: none;
    flex-direction: column;
    gap: 0.3rem;
    margin-bottom: 0.3rem;
}
.search-panel.active {
    display: flex;
}
.search-panel .search-row {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}
.search-panel input {
    flex: 1;
    padding: 0.2rem 0.4rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 0.85rem;
    margin: 0;
}
.search-panel button {
    background: #eef;
    color: #333;
    border: 1px solid #ccc;
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
    line-height: 1;
    min-width: 1.8rem;
    text-align: center;
}
.search-panel button:hover {
    background: #dde;
}
.search-panel input.error-flash {
    border-color: #c62828 !important;
    transition: border-color 0.15s;
}
.search-panel input.success-flash {
    border-color: #2e7d32 !important;
    transition: border-color 0.15s;
}
.search-counter {
    font-size: 0.8rem;
    color: #555;
    min-width: 2.5rem;
    text-align: center;
}

/* Feedback visual para inputs fuera del panel de búsqueda (tags, sinónimos) */
input.error-flash {
    border-color: #c62828 !important;
    transition: border-color 0.15s;
}
input.success-flash {
    border-color: #2e7d32 !important;
    transition: border-color 0.15s;
}

/* Píldoras de tags en vistas previas del editor */
.tag-pill {
    display: inline-block;
    padding: 0.3rem 0.7rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    color: white;
    margin: 0.15rem 0.2rem;
}

/* ========== BUSCADOR GLOBAL INTEGRADO ========== */

.search-panel-global {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto 1rem auto;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    padding: 1rem;
}

.search-header {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 0.8rem;
}
.search-header input {
    flex: 1;
    padding: 0.5rem 0.7rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.95rem;
    margin: 0;
}
.search-header button {
    padding: 0.5rem 0.9rem;
    margin: 0;
    white-space: nowrap;
}
.search-close-btn {
    background: none !important;
    color: #999 !important;
    border: none !important;
    font-size: 1.1rem;
    cursor: pointer;
    padding: 0.3rem 0.5rem !important;
}
.search-close-btn:hover {
    color: #333 !important;
    opacity: 1 !important;
}

.search-results {
    max-height: 50vh;
    overflow-y: auto;
    padding: 0 0.3rem;
}

.search-summary {
    font-size: 0.85rem;
    color: #666;
    margin-bottom: 0.8rem;
}
.search-hint {
    text-align: center;
    color: #999;
    padding: 1rem 0;
}

.search-group {
    margin-bottom: 1rem;
}
.search-group h3 {
    font-size: 0.9rem;
    color: var(--accent);
    margin-bottom: 0.4rem;
    padding-bottom: 0.2rem;
    border-bottom: 1px solid #eee;
}

.search-result-item {
    display: block;
    padding: 0.5rem 0.7rem;
    border-radius: 6px;
    cursor: pointer;
    margin-bottom: 0.2rem;
    transition: background 0.15s;
    text-decoration: none !important;
    color: inherit;
}
.search-result-item:hover {
    background: #eef;
}

.search-result-title {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text);
}
.search-result-subtitle {
    font-size: 0.85rem;
    color: #555;
    margin-top: 0.15rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.search-result-subtitle strong {
    color: var(--accent);
    background: #e8f0fe;
    padding: 0 0.15rem;
    border-radius: 2px;
}
.search-result-matches {
    font-size: 0.75rem;
    color: #999;
    margin-top: 0.15rem;
}