:root {
    --bg-dark: #1e1e24;
    --canvas-bg: #18191f;
    --grid-dot: #2a2c35;
    --sidebar-bg: #22242d;
    --border-color: #2e323e;
    --card-header-bg: #2d3748;
    --accent-blue: #3b82f6;
    --accent-green: #10b981;
    --accent-yellow: #f59e0b;
    --accent-red: #ef4444;

    /* Colores de Sintaxis DBML y Variables (Configurables por usuario) */
    --syntax-keyword-color: #c084fc;
    --syntax-number-color: #34d399;
    --syntax-string-color: #fbbf24;
    --syntax-datetime-color: #60a5fa;
    --syntax-boolean-color: #f472b6;
    --syntax-special-color: #38bdf8;
    --syntax-property-color: #f97316;
    --syntax-comment-color: #64748b;
}

body {
    background-color: var(--bg-dark);
    color: #e2e8f0;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    overflow: hidden;
    height: 100vh;
}

/* Navbar */
.top-navbar {
    background-color: #1a1c23;
    border-bottom: 1px solid var(--border-color);
    height: 58px;
    z-index: 100;
}

.brand-title {
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: -0.5px;
    color: #ffffff;
}

/* Split view */
.main-container {
    height: calc(100vh - 58px);
    display: flex;
    overflow: hidden;
}

.editor-pane {
    width: 38%;
    min-width: 320px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 10;
}

.canvas-pane {
    flex: 1;
    background-color: var(--canvas-bg);
    background-image: radial-gradient(var(--grid-dot) 1.5px, transparent 1.5px);
    background-size: 24px 24px;
    position: relative;
    overflow: hidden;
    user-select: none;
    cursor: grab;
}

.canvas-pane:active {
    cursor: grabbing;
}

/* CodeMirror overrides */
.CodeMirror {
    height: 100% !important;
    background-color: #1e2029 !important;
    color: #f8fafc !important;
    font-family: 'Fira Code', 'Cascadia Code', Consolas, monospace !important;
    font-size: 13.5px !important;
    line-height: 1.5 !important;
}

.CodeMirror-gutters {
    background-color: #17181f !important;
    border-right: 1px solid var(--border-color) !important;
    white-space: nowrap !important;
}

.CodeMirror-linenumbers {
    width: auto !important;
    min-width: 36px !important;
    box-sizing: content-box !important;
}

.CodeMirror-linenumber {
    box-sizing: content-box !important;
    min-width: 26px !important;
    padding: 0 8px 0 4px !important;
    text-align: right !important;
    color: #64748b !important;
}

/* Canvas SVG & Nodes */
#erd-viewport {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transform-origin: 0 0;
}

#relations-svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: visible !important;
    pointer-events: none;
    z-index: 10;
}

.relation-path {
    fill: none;
    stroke: #64748b;
    stroke-width: 2px;
    stroke-linecap: round;
    transition: stroke 0.15s, stroke-width 0.15s;
}

.relation-path:hover {
    stroke: var(--accent-blue);
    stroke-width: 3.5px;
}

/* Cardinalidad de Relaciones (1, *, 1..*) */
.cardinality-badge {
    fill: #1a1c23;
    stroke: #3b82f6;
    stroke-width: 1.5px;
    rx: 4px;
    ry: 4px;
}

.cardinality-text {
    fill: #60a5fa;
    font-size: 11px;
    font-family: 'Fira Code', Consolas, monospace;
    font-weight: 700;
    text-anchor: middle;
    dominant-baseline: central;
    pointer-events: none;
    user-select: none;
}

/* Table Group (Agrupaciones estilo dbdiagram.io) */
.erd-table-group {
    position: absolute;
    border-radius: 12px;
    border: 2px dashed rgba(255, 255, 255, 0.25);
    background: rgba(255, 255, 255, 0.02);
    z-index: 2;
    pointer-events: none;
    transition: none !important; /* Actualización instantánea sin retardo */
}

.table-group-header {
    position: absolute;
    top: -14px;
    left: 16px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 12px;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #ffffff;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
    pointer-events: auto;
    cursor: grab;
    user-select: none;
    transition: transform 0.1s ease, box-shadow 0.1s ease;
}

.table-group-header:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.5);
}

.table-group-header:active {
    cursor: grabbing;
    transform: translateY(0);
}

/* Tablas con error de sintaxis (Resiliencia visual) */
.erd-table.has-syntax-error {
    border: 2px solid #ef4444 !important;
    box-shadow: 0 0 15px rgba(239, 68, 68, 0.4) !important;
}

.table-error-badge {
    position: absolute;
    top: -12px;
    left: 12px;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.65rem;
    font-weight: 700;
    color: #fff;
    background-color: #ef4444;
    display: flex;
    align-items: center;
    gap: 4px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.5);
    z-index: 6;
}

/* Líneas con error en CodeMirror */
.cm-error-line {
    background: rgba(239, 68, 68, 0.2) !important;
    border-left: 3px solid #ef4444 !important;
}

.cursor-pointer {
    cursor: pointer;
}

/* Table Card / Node */
.erd-table {
    position: absolute;
    width: 250px;
    background: #232733;
    border: 1.5px solid #374151;
    border-radius: 8px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
    z-index: 5;
    cursor: default;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.erd-table:hover {
    border-color: #60a5fa;
    box-shadow: 0 12px 28px -4px rgba(59, 130, 246, 0.2);
}

.erd-table.active-selection {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.4);
}

/* Bloqueo por concurrencia */
.erd-table.locked-by-other {
    border-width: 2px;
    animation: pulse-border 2s infinite;
}

@keyframes pulse-border {
    0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.6); }
    70% { box-shadow: 0 0 0 8px rgba(239, 68, 68, 0); }
    100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

.table-header {
    background: #1f232e;
    padding: 8px 12px;
    border-top-left-radius: 6px;
    border-top-right-radius: 6px;
    border-bottom: 1px solid #374151;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: move;
    font-weight: 600;
    font-size: 0.9rem;
    color: #f1f5f9;
}

.table-header .table-title {
    display: flex;
    align-items: center;
    gap: 6px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.table-header .header-bar {
    height: 4px;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
    background: #3b82f6;
}

.table-columns {
    padding: 4px 0;
    max-height: 380px;
    overflow-y: auto;
}

.table-col-row {
    padding: 7px 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
    color: #cbd5e1;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    position: relative;
    transition: background-color 0.12s ease;
}

.table-col-row:last-child {
    border-bottom: none;
}

.table-col-row:hover {
    background-color: rgba(255, 255, 255, 0.06);
}

/* Indicador lateral sutil según el tipo de dato */
.table-col-row::before {
    content: '';
    position: absolute;
    left: 0;
    top: 2px;
    bottom: 2px;
    width: 2.5px;
    border-radius: 2px;
    opacity: 0.7;
}

.table-col-row.row-type-number::before { background-color: var(--syntax-number-color, #34d399); }
.table-col-row.row-type-string::before { background-color: var(--syntax-string-color, #fbbf24); }
.table-col-row.row-type-datetime::before { background-color: var(--syntax-datetime-color, #60a5fa); }
.table-col-row.row-type-boolean::before { background-color: var(--syntax-boolean-color, #f472b6); }
.table-col-row.row-type-special::before { background-color: var(--syntax-special-color, #38bdf8); }

.col-left {
    display: flex;
    align-items: center;
    gap: 6px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.col-badges {
    display: flex;
    gap: 4px;
    align-items: center;
}

.badge-pk {
    background-color: #d97706;
    color: #fff;
    font-size: 0.65rem;
    padding: 1px 4px;
    border-radius: 4px;
    font-weight: 700;
}

.badge-fk {
    background-color: #2563eb;
    color: #fff;
    font-size: 0.65rem;
    padding: 1px 4px;
    border-radius: 4px;
    font-weight: 700;
}

/* Coloración Cromática por Tipo de Variable */
.col-type {
    font-family: 'Fira Code', Consolas, monospace;
    font-size: 0.74rem;
    font-weight: 600;
}

.col-type.type-number { color: var(--syntax-number-color, #34d399) !important; }
.col-type.type-string { color: var(--syntax-string-color, #fbbf24) !important; }
.col-type.type-datetime { color: var(--syntax-datetime-color, #60a5fa) !important; }
.col-type.type-boolean { color: var(--syntax-boolean-color, #f472b6) !important; }
.col-type.type-special { color: var(--syntax-special-color, #38bdf8) !important; }
.col-type.type-default { color: #94a3b8 !important; }

/* Acordeón de tabla colapsable */
.erd-table.is-collapsed .table-columns {
    display: none !important;
}

.erd-table.is-collapsed {
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
}

.btn-collapse-table {
    border: none;
    background: transparent;
    color: #94a3b8;
    padding: 0;
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: color 0.15s, transform 0.2s;
}

.btn-collapse-table:hover {
    color: #ffffff;
}

/* Colaboradores & Presencia */
.collaborator-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.75rem;
    color: #ffffff;
    border: 2px solid #1a1c23;
    margin-left: -8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    transition: transform 0.15s;
    cursor: pointer;
}

.collaborator-avatar:hover {
    transform: translateY(-2px) scale(1.1);
    z-index: 10;
}

/* Remote Cursor */
.remote-cursor {
    position: absolute;
    pointer-events: none;
    z-index: 99;
    transition: transform 0.08s ease-out;
}

.remote-cursor-label {
    position: absolute;
    top: 14px;
    left: 14px;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    color: #fff;
    white-space: nowrap;
    box-shadow: 0 2px 5px rgba(0,0,0,0.4);
}

/* Canvas Floating Toolbar */
.canvas-controls {
    position: absolute;
    bottom: 20px;
    right: 20px;
    background: #1f232e;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 4px;
    display: flex;
    gap: 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    z-index: 30;
}

.canvas-btn {
    background: transparent;
    border: none;
    color: #cbd5e1;
    padding: 6px 10px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s;
}

.canvas-btn:hover {
    background: #374151;
    color: #ffffff;
}

/* Lock badge on card */
.table-lock-badge {
    position: absolute;
    top: -12px;
    right: 12px;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.65rem;
    font-weight: 700;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 4px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.5);
    z-index: 6;
}

/* Material icons alignment */
.material-symbols-outlined {
    font-size: 1.15rem;
    vertical-align: middle;
}

/* ==========================================================================
   Resaltado de Sintaxis DBML y Acordeón / Plegado en CodeMirror
   ========================================================================== */

/* Colores de tokens DBML según variables dinámicas */
.cm-s-dracula .cm-dbml-keyword {
    color: var(--syntax-keyword-color) !important;
    font-weight: 700 !important;
}

.cm-s-dracula .cm-dbml-type-number {
    color: var(--syntax-number-color) !important;
    font-weight: 600 !important;
}

.cm-s-dracula .cm-dbml-type-string {
    color: var(--syntax-string-color) !important;
    font-weight: 600 !important;
}

.cm-s-dracula .cm-dbml-type-datetime {
    color: var(--syntax-datetime-color) !important;
    font-weight: 600 !important;
}

.cm-s-dracula .cm-dbml-type-boolean {
    color: var(--syntax-boolean-color) !important;
    font-weight: 600 !important;
}

.cm-s-dracula .cm-dbml-type-special {
    color: var(--syntax-special-color) !important;
    font-weight: 600 !important;
}

.cm-s-dracula .cm-dbml-property {
    color: var(--syntax-property-color) !important;
    font-weight: 500 !important;
}

.cm-s-dracula .cm-dbml-identifier {
    color: #f1f5f9 !important;
}

.cm-s-dracula .cm-comment {
    color: var(--syntax-comment-color) !important;
    font-style: italic !important;
}

.cm-s-dracula .cm-string {
    color: #a3e635 !important;
}

.cm-s-dracula .cm-operator {
    color: #ec4899 !important;
    font-weight: 700 !important;
}

/* Canaleta de Plegado / Acordeón (CodeMirror Fold Gutter) */
.CodeMirror-foldgutter {
    width: 20px !important;
    min-width: 20px !important;
    text-align: center !important;
    cursor: pointer !important;
    box-sizing: content-box !important;
}

.CodeMirror-foldgutter-open,
.CodeMirror-foldgutter-folded {
    color: #94a3b8 !important;
    text-align: center !important;
    cursor: pointer !important;
    display: inline-block !important;
    width: 100% !important;
    user-select: none !important;
    line-height: normal !important;
    transition: color 0.15s, transform 0.15s;
    font-size: 13px !important;
}

.CodeMirror-foldgutter-open:hover,
.CodeMirror-foldgutter-folded:hover {
    color: #38bdf8 !important;
}

.CodeMirror-foldgutter-open:after {
    content: "\25BE" !important;
    font-size: 13px !important;
    display: inline-block !important;
}

.CodeMirror-foldgutter-folded:after {
    content: "\25B8" !important;
    font-size: 13px !important;
    display: inline-block !important;
    color: #f59e0b !important;
}

/* Indicador de bloque colapsado en el texto */
.CodeMirror-foldmarker {
    color: #93c5fd !important;
    background-color: #1e293b !important;
    border: 1px solid #3b82f6 !important;
    border-radius: 4px !important;
    padding: 0 6px !important;
    font-size: 11px !important;
    font-family: 'Fira Code', Consolas, monospace !important;
    cursor: pointer;
    box-shadow: 0 1px 3px rgba(0,0,0,0.4);
    margin: 0 4px;
}

.CodeMirror-foldmarker:hover {
    background-color: #2563eb !important;
    color: #ffffff !important;
}

/* ==========================================================================
   Buscador Estilo VS Code (Lupita, Filtros Tabla/Item y Resaltado)
   ========================================================================== */

.vscode-search-bar {
    background-color: #17181f;
    z-index: 25;
}

.vscode-search-box {
    background-color: #222530;
    border: 1px solid #374151;
    border-radius: 5px;
    padding: 3px 8px;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.vscode-search-box:focus-within {
    border-color: #3b82f6;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.25);
}

.search-mag-icon {
    color: #64748b;
    margin-right: 6px;
    user-select: none;
}

.vscode-search-input {
    background: transparent;
    border: none;
    outline: none;
    color: #f1f5f9;
    font-size: 12.5px;
    min-width: 80px;
}

.vscode-search-input::placeholder {
    color: #64748b;
}

.vscode-filter-btn {
    background: transparent;
    border: 1px solid transparent;
    color: #94a3b8;
    border-radius: 3px;
    width: 22px;
    height: 22px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: 0;
    transition: all 0.15s;
    user-select: none;
}

.vscode-filter-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
}

.vscode-filter-btn.active {
    background: #2563eb !important;
    color: #ffffff !important;
    border-color: #3b82f6 !important;
    box-shadow: 0 0 6px rgba(59, 130, 246, 0.5);
}

.filter-i-badge {
    font-family: 'Georgia', 'Times New Roman', serif;
    font-weight: 700;
    font-size: 13px;
    font-style: italic;
    line-height: 1;
}

.search-count-badge {
    font-size: 11px;
    color: #94a3b8;
    font-family: monospace;
    padding: 0 4px;
    white-space: nowrap;
    user-select: none;
}

.vscode-nav-btn {
    background: transparent;
    border: none;
    color: #94a3b8;
    border-radius: 3px;
    width: 20px;
    height: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: 0;
    transition: color 0.15s, background 0.15s;
}

.vscode-nav-btn:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
}

/* Dropdown flotante de resultados de búsqueda */
.search-results-dropdown {
    position: absolute;
    top: calc(100% + 4px);
    left: 8px;
    right: 8px;
    max-height: 280px;
    overflow-y: auto;
    background: #181920;
    border: 1px solid #3b4252;
    border-radius: 6px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.7);
    z-index: 50;
}

.search-result-item {
    padding: 6px 10px;
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: #cbd5e1;
    cursor: pointer;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: background 0.12s;
}

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

.search-result-item:hover,
.search-result-item.selected {
    background-color: #262c3a;
    color: #ffffff;
}

/* Efectos de Resaltado en Canvas y CodeMirror */
.erd-table.search-highlight {
    border-color: #38bdf8 !important;
    animation: search-glow 1.2s ease-in-out infinite alternate !important;
    z-index: 10 !important;
}

@keyframes search-glow {
    from {
        box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.4), 0 10px 25px rgba(0,0,0,0.5);
    }
    to {
        box-shadow: 0 0 0 6px rgba(56, 189, 248, 0.9), 0 0 25px rgba(56, 189, 248, 0.6);
    }
}

.table-col-row.col-highlight {
    background-color: rgba(56, 189, 248, 0.25) !important;
    border-left: 3px solid #38bdf8 !important;
    font-weight: 700;
}

.cm-search-highlight-line {
    background: rgba(56, 189, 248, 0.22) !important;
    border-left: 3px solid #38bdf8 !important;
}

/* Línea de relación no encontrada / huérfana en CodeMirror (Fondo Naranja) */
.cm-relation-missing-line {
    background: rgba(249, 115, 22, 0.28) !important;
    border-left: 3px solid #f97316 !important;
}

.cm-relation-missing-line:hover {
    background: rgba(249, 115, 22, 0.38) !important;
}