/* Sim-Power Visual Schematic Simulator CSS */

:root {
    --bg-app: #09090d;
    --bg-card: #111118;
    --bg-inner: #171723;
    --border-color: #242436;
    --text-main: #f0f0f5;
    --text-muted: #808092;
    
    --color-primary: #00f3ff;      /* Electric Cyan */
    --color-secondary: #ff007f;    /* Neon Pink */
    --color-success: #4dff9c;      /* Electric Green */
    --color-warning: #ffd700;      /* Gold */
    --color-danger: #ff4d4d;       /* Neon Red */
    
    --shadow-glow: 0 0 15px rgba(0, 243, 255, 0.2);
    --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.6);
    --transition-speed: 0.25s;
}

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

body {
    background-color: var(--bg-app);
    color: var(--text-main);
    font-family: 'Outfit', sans-serif;
    height: 100vh; /* Fijo (no min-height): si no, el body crece con el contenido y el
                      overflow:hidden nunca se activa, dejando partes del panel inaccesibles
                      sin scroll en vez de recortadas-pero-desplazables internamente. */
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Header */
.app-header {
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.4);
    z-index: 10;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo h1 {
    font-size: 18px;
    font-weight: 900;
    letter-spacing: 1px;
    background: linear-gradient(45deg, #00f3ff, #ff007f);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.badge {
    font-size: 9px;
    padding: 2px 5px;
    border-radius: 4px;
    background: rgba(0, 243, 255, 0.15);
    color: var(--color-primary);
    border: 1px solid rgba(0, 243, 255, 0.3);
    margin-left: 5px;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--color-success);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--color-success);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(77, 255, 156, 0.7); }
    70% { transform: scale(1.1); box-shadow: 0 0 0 8px rgba(77, 255, 156, 0); }
    100% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(77, 255, 156, 0); }
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-badge {
    background: rgba(255, 215, 0, 0.1);
    border: 1px solid rgba(255, 215, 0, 0.3);
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 500;
    color: var(--color-warning);
}

/* Layout Tríptico */
.app-container {
    flex: 1;
    display: grid;
    grid-template-columns: 80px 1fr 450px;
    grid-template-rows: minmax(0, 1fr); /* Evita que la fila crezca según el contenido y rompa el scroll interno */
    gap: 15px;
    padding: 15px;
    height: calc(100vh - 90px); /* Restar header y footer */
    overflow: hidden;
}

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Sección independiente: Componentes Simétricas */
.simetricas-view {
    flex: none;
    display: flex;
    flex-direction: column;
    padding: 15px;
    height: calc(100vh - 90px);
    overflow: hidden;
}

.simetricas-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 15px;
}

.simetricas-header h2 {
    color: var(--color-warning);
    font-size: 20px;
}

.simetricas-body {
    flex: 1;
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 15px;
    overflow: hidden;
    min-height: 0;
}

.simetricas-panel {
    padding: 20px;
    overflow-y: auto;
    min-height: 0;
}

.simetricas-results {
    padding: 20px;
    overflow-y: auto;
    min-height: 0;
}

.fasor-diagrama-clickable {
    cursor: zoom-in;
    border-radius: 12px;
    transition: box-shadow var(--transition-speed), transform var(--transition-speed);
}

.fasor-diagrama-clickable:hover {
    box-shadow: 0 0 0 2px var(--color-primary), var(--shadow-glow);
    transform: scale(1.01);
}

.fasor-diagrama-clickable svg {
    display: block;
}

.fasor-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.fasor-modal-overlay.hidden {
    display: none;
}

.fasor-modal-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-card);
    padding: 24px;
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
}

.fasor-modal-content svg {
    width: min(80vw, 720px);
    height: auto;
    display: block;
}

.fasor-modal-close {
    position: absolute;
    top: 8px;
    right: 12px;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 26px;
    line-height: 1;
    cursor: pointer;
}

.fasor-modal-close:hover {
    color: var(--color-danger);
}

.mixto-grid {
    display: grid;
    grid-template-columns: 56px 1fr 1fr 1fr;
    gap: 6px;
    align-items: center;
}

.mixto-grid-header {
    font-size: 10px;
    color: var(--text-muted);
    font-weight: 600;
    text-align: center;
}

.mixto-cell {
    display: flex;
    gap: 3px;
}

.mixto-cell input {
    width: 100%;
    min-width: 0;
    padding: 5px 4px;
    font-size: 10px;
    text-align: center;
    background-color: var(--bg-inner);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-main);
}

.mixto-cell input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.zbus-body {
    flex: 1;
    display: grid;
    grid-template-columns: 80px 1fr 380px;
    gap: 15px;
    overflow: hidden;
    min-height: 0;
}

.zbus-elemento {
    cursor: grab;
}

.zbus-elemento:active {
    cursor: grabbing;
}

.zbus-terminal {
    fill: #1a1a24;
    stroke: #808092;
    stroke-width: 2;
    cursor: crosshair;
    transition: fill 0.15s, stroke 0.15s;
}

.zbus-terminal:hover {
    stroke: var(--color-primary);
}

.zbus-terminal.conectado {
    fill: #00f3ff;
    stroke: #00f3ff;
}

.zbus-nodo-label {
    fill: #f0f0f5;
    font-size: 13px;
    font-weight: 600;
    text-anchor: middle;
    pointer-events: none;
}

.zbus-largo-handle {
    fill: transparent;
    stroke: none;
    cursor: ns-resize;
}

.zbus-largo-handle:hover {
    fill: rgba(77, 255, 156, 0.12);
}

.zbus-z-label {
    fill: #9999aa;
    font-size: 9px;
    pointer-events: none;
}

.zbus-elemento.seleccionado .zbus-rama-cuerpo {
    stroke: var(--color-primary) !important;
    filter: drop-shadow(0 0 4px rgba(0, 243, 255, 0.6));
}

.zbus-elemento.seleccionado .zbus-fuente-cuerpo {
    filter: drop-shadow(0 0 4px rgba(0, 243, 255, 0.6));
}

/* PANEL A: Paleta (Izquierda) */
.palette-panel {
    padding: 15px 8px;
    align-items: center;
    gap: 12px;
    background-color: #0c0c12;
}

.tool-title {
    font-size: 9px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 5px;
}

.tool-btn {
    width: 60px;
    height: 60px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-muted);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    font-family: inherit;
    font-size: 10px;
    font-weight: 500;
    transition: all var(--transition-speed);
}

.tool-btn svg {
    width: 24px;
    height: 24px;
    transition: transform var(--transition-speed);
}

.tool-btn:hover {
    color: var(--text-main);
    border-color: rgba(255,255,255,0.15);
    background-color: rgba(255, 255, 255, 0.02);
}

.tool-btn:hover svg {
    transform: scale(1.1);
}

.tool-btn.active {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background-color: rgba(0, 243, 255, 0.05);
    box-shadow: 0 0 10px rgba(0, 243, 255, 0.15);
}

.btn-delete-tool {
    margin-top: auto; /* Empujar hacia abajo */
    border-color: rgba(255, 77, 77, 0.2);
    color: rgba(255, 77, 77, 0.7);
}

.btn-delete-tool:hover {
    background-color: rgba(255, 77, 77, 0.1);
    border-color: var(--color-danger);
    color: var(--color-danger);
}

/* PANEL B: Lienzo / Canvas (Centro) */
.canvas-panel {
    flex: 1;
    padding: 0;
}

.canvas-header {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.canvas-header h2 {
    font-size: 15px;
    font-weight: 600;
}

.canvas-hints {
    font-size: 11px;
    color: var(--text-muted);
}

.canvas-wrapper {
    flex: 1;
    position: relative;
    overflow: auto;
    cursor: default;
}

.canvas-empty-hint {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    text-align: left;
    background-color: rgba(20, 20, 28, 0.6);
    border: 1px dashed var(--border-color);
    border-radius: 10px;
    padding: 18px 24px;
    color: var(--text-muted);
    font-size: 13px;
    max-width: 360px;
    z-index: 1;
}

.canvas-empty-hint p {
    margin: 0 0 8px 0;
    color: var(--text-main);
}

.canvas-empty-hint ol {
    margin: 0;
    padding-left: 18px;
    line-height: 1.6;
}

.canvas-empty-hint.hidden {
    display: none;
}

#schematic-svg {
    /* El tamaño real lo fija ajustarTamanoLienzo() en JS (vía atributos width/height) según el
       contenido dibujado, para que el lienzo pueda crecer y el wrapper (overflow:auto) deje
       hacer scroll hasta los nodos colocados más abajo/a la derecha. Si se forzara aquí 100%,
       el SVG quedaría siempre del tamaño visible del panel y el scroll nunca tendría efecto. */
    display: block;
    user-select: none;
}

/* Clases de elementos interactivos del Canvas (SVG) */
.svg-bus-bar {
    stroke-linecap: round;
    cursor: move;
    transition: filter var(--transition-speed);
}

.svg-bus-bar:hover {
    filter: drop-shadow(0 0 5px rgba(255, 215, 0, 0.4));
}

.svg-bus-bar.selected {
    filter: drop-shadow(0 0 6px var(--color-primary));
}

.svg-bus-bar.fault {
    filter: drop-shadow(0 0 8px var(--color-danger)) !important;
}

.svg-element-click-zone {
    fill: #ffffff;
    fill-opacity: 0;
    pointer-events: all;
    cursor: pointer;
}

.svg-connection-line {
    fill: none;
    transition: stroke-width var(--transition-speed);
}

.svg-connection-line:hover {
    stroke-width: 4px;
}

.svg-connection-line.selected {
    stroke: var(--color-primary) !important;
    filter: drop-shadow(0 0 3px var(--color-primary));
}

.svg-attachment-circle {
    cursor: pointer;
    transition: filter var(--transition-speed);
}

.svg-attachment-circle:hover {
    filter: drop-shadow(0 0 4px var(--color-primary));
}

.svg-attachment-circle.selected {
    stroke: var(--color-primary) !important;
    filter: drop-shadow(0 0 4px var(--color-primary));
}

.svg-attachment-rect {
    cursor: pointer;
    transition: filter var(--transition-speed);
}

.svg-attachment-rect:hover {
    filter: drop-shadow(0 0 4px var(--color-primary));
}

.svg-attachment-rect.selected {
    stroke: var(--color-primary) !important;
    filter: drop-shadow(0 0 4px var(--color-primary));
}

.svg-zone-bg {
    fill-opacity: 0.05;
    stroke: none;
}

/* PANEL C: Inspector e Información (Derecha) */
.inspector-panel {
    padding: 20px;
    gap: 15px;
    height: 100%;
    min-height: 0; /* Crucial para evitar desbordamiento y permitir scroll */
}

.panel-tabs {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.panel-tabs-left {
    display: flex;
    gap: 10px;
}

#right-side-panel.maximized,
#zbus-inspector-panel.maximized {
    position: absolute;
    top: 15px;
    left: 15px;
    right: 15px;
    bottom: 15px;
    width: calc(100% - 30px);
    height: calc(100% - 30px);
    max-width: none;
    z-index: 100;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.8), 0 0 15px rgba(0, 243, 255, 0.3);
    border: 1px solid var(--color-primary);
    background-color: var(--bg-card);
}

.panel-tab-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    padding: 6px 12px;
    cursor: pointer;
    border-radius: 6px;
    transition: all var(--transition-speed);
}

.panel-tab-btn:hover {
    color: var(--text-main);
}

.panel-tab-btn.active {
    color: var(--color-primary);
    background-color: rgba(0, 243, 255, 0.08);
}

.panel-tab-content {
    display: none;
    flex: 1;
    flex-direction: column;
    overflow-y: auto;
    gap: 15px;
    min-height: 0; /* Evita que el contenedor desborde el alto de flexbox */
}

.panel-tab-content.active {
    display: flex;
}
#panel-results {
    overflow: hidden; /* Mantiene fijas las pestañas internas en la parte superior */
}
.inspector-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--color-warning);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 6px;
    margin-bottom: 10px;
}

.config-section {
    border-top: 1px solid var(--border-color);
    margin-top: 16px;
    padding-top: 14px;
}

.config-section-title {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.bus-fault-box {
    background-color: rgba(255, 77, 77, 0.05);
    border: 1px dashed rgba(255, 77, 77, 0.2);
    border-radius: 8px;
    padding: 12px;
    margin-top: 15px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center;
}

.bus-fault-box p {
    font-size: 12px;
    color: var(--text-muted);
}

/* Form Fields */
.input-field {
    display: flex;
    flex-direction: column;
    gap: 5px;
    margin-bottom: 10px;
}

.input-field label {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 500;
}

/* Auto-detección de voltaje de fase (L-N) */
.input-field.voltage-field {
    position: relative;
}

.input-field.glow-success input {
    border-color: var(--color-success);
    box-shadow: 0 0 10px 1px rgba(77, 255, 156, 0.6);
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.auto-correct-badge {
    position: absolute;
    top: -2px;
    right: 0;
    background: rgba(77, 255, 156, 0.15);
    color: var(--color-success);
    border: 1px solid rgba(77, 255, 156, 0.4);
    border-radius: 12px;
    padding: 2px 8px;
    font-size: 10px;
    font-weight: 600;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    z-index: 5;
}

.auto-correct-badge.show {
    animation: auto-correct-fade 2.8s ease-out forwards;
}

@keyframes auto-correct-fade {
    0%   { opacity: 0; transform: translateY(2px); }
    10%  { opacity: 1; transform: translateY(0); }
    75%  { opacity: 1; }
    100% { opacity: 0; transform: translateY(-4px); }
}

.input-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

input[type="text"],
input[type="number"],
select {
    background-color: var(--bg-inner);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 7px 10px;
    border-radius: 6px;
    font-family: inherit;
    font-size: 12px;
    width: 100%;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--color-primary);
}

input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Results Content (Sub-tabs) */
.results-inner-tabs {
    display: flex;
    background-color: var(--bg-inner);
    border: 1px solid var(--border-color);
    padding: 3px;
    border-radius: 6px;
    margin-bottom: 10px;
}

.sub-tab-btn {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-muted);
    font-family: inherit;
    font-size: 11px;
    font-weight: 600;
    padding: 6px 4px;
    cursor: pointer;
    border-radius: 4px;
    transition: all var(--transition-speed);
}

.sub-tab-btn.active {
    background-color: var(--bg-card);
    color: var(--color-primary);
    box-shadow: 0 1px 4px rgba(0,0,0,0.3);
}

.sub-tab-content {
    display: none;
    flex: 1;
    flex-direction: column;
    overflow-y: auto;
    min-height: 0; /* Permite scroll vertical independiente del reporte y tablas */
}

.sub-tab-content.active {
    display: flex;
}

/* Empty states */
.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 20px;
}

/* Tables and markdown */
.markdown-body {
    font-size: 13px;
    line-height: 1.5;
}

.markdown-body h1, .markdown-body h2, .markdown-body h3 {
    margin-top: 15px;
    margin-bottom: 8px;
}

.markdown-body h1 { font-size: 16px; border-bottom: 1px solid var(--border-color); padding-bottom: 4px; }
.markdown-body h2 { font-size: 14px; color: var(--color-primary); }
.markdown-body h3 { font-size: 12px; color: var(--color-warning); }

.markdown-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 10px 0;
    font-size: 11px;
}

.markdown-body th, .markdown-body td {
    padding: 6px 8px;
    border: 1px solid var(--border-color);
}

.markdown-body th {
    background-color: var(--bg-inner);
    font-weight: 600;
}

/* Valores dados por el problema o asumidos por el usuario (Sbase/Vbase de referencia),
   para distinguirlos a simple vista de los que el motor calcula (Zbase, Ibase, Vbase derivado). */
.valor-dado {
    background-color: rgba(255, 215, 0, 0.18);
    color: var(--color-warning);
    font-weight: 700;
}

.katex-display {
    padding: 8px;
    margin: 10px 0;
    font-size: 12px;
    background: rgba(0, 0, 0, 0.2);
    border-left: 2px solid var(--color-primary);
    border-radius: 4px;
    overflow-x: auto;
}

/* Matrices visual cards */
.matrix-card {
    background-color: rgba(0,0,0,0.2);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px;
}

.matrix-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 11px;
}

.matrix-table th, .matrix-table td {
    border: 1px solid var(--border-color);
    padding: 5px 6px;
    text-align: center;
}

.matrix-table td {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
}

/* Data lists inside results details */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 10px;
}

.data-table th, .data-table td {
    border: 1px solid var(--border-color);
    padding: 5px;
    text-align: center;
}

.data-table td {
    font-family: 'JetBrains Mono', monospace;
}

/* Dropdown */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    background-color: var(--bg-inner);
    min-width: 180px;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    z-index: 100;
    margin-top: 5px;
}

.dropdown-content a {
    color: var(--text-main);
    padding: 8px 14px;
    text-decoration: none;
    display: block;
    font-size: 12px;
}

.dropdown-content a:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--color-primary);
}

.dropdown:hover .dropdown-content,
.dropdown.active .dropdown-content {
    display: block;
}

/* Buttons */
.btn {
    font-family: inherit;
    font-weight: 600;
    border: none;
    border-radius: 6px;
    padding: 8px 14px;
    cursor: pointer;
    font-size: 12px;
    transition: all var(--transition-speed);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), #00b0ff);
    color: #050508;
    box-shadow: 0 4px 12px rgba(0, 243, 255, 0.25);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 15px rgba(0, 243, 255, 0.4);
}

.btn-secondary {
    background-color: var(--bg-inner);
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

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

.btn-decision.active {
    background-color: rgba(0, 243, 255, 0.12);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-block {
    width: 100%;
}

.btn-loader {
    display: inline-block;
    width: 15px;
    height: 15px;
    border: 2px solid rgba(0,0,0,0.1);
    border-radius: 50%;
    border-top-color: #0b0b0f;
    animation: spin 1s linear infinite;
}

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

.svg-container {
    width: 100%;
    border-radius: 8px;
    overflow: hidden;
}

/* Scrollbar adjustment */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-app);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

.app-footer-bar {
    text-align: center;
    padding: 8px;
    font-size: 10px;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-card);
    height: 30px;
    z-index: 10;
}

/* Plegado del canvas tras resolver */
.canvas-panel.collapsed {
    max-height: 150px !important;
}

.canvas-panel.collapsed .canvas-wrapper {
    height: 80px;
}

.hidden {
    display: none !important;
}

.modo-display-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.modo-display-badge {
    flex: 1;
    background-color: var(--bg-inner);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px 10px;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-primary);
}

/* Pantalla inicial de selección de modo de análisis */
.modo-overlay {
    position: fixed;
    inset: 0;
    background: rgba(9, 9, 13, 0.92);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modo-overlay-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-card);
    padding: 32px;
    max-width: 640px;
    text-align: center;
}

.modo-overlay-card h2 {
    font-size: 22px;
    margin-bottom: 10px;
    background: linear-gradient(45deg, #00f3ff, #ff007f);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.modo-overlay-card p {
    color: var(--text-muted);
    font-size: 13px;
    margin-bottom: 24px;
}

.modo-overlay-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.modo-overlay-btn {
    background-color: var(--bg-inner);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 20px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    color: var(--text-main);
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.modo-overlay-btn:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.modo-overlay-icon {
    font-size: 28px;
}

.modo-overlay-title {
    font-size: 14px;
    font-weight: 700;
}

.modo-overlay-desc {
    font-size: 11px;
    color: var(--text-muted);
    line-height: 1.4;
}

/* Modal propio para reemplazar los alert() feos del navegador */
.app-alert-overlay {
    position: fixed;
    inset: 0;
    background: rgba(9, 9, 13, 0.78);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease;
}

.app-alert-overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

.app-alert-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-card);
    padding: 28px 30px;
    max-width: 440px;
    text-align: center;
    transform: scale(0.92) translateY(8px);
    transition: transform 0.15s ease;
}

.app-alert-overlay.visible .app-alert-card {
    transform: scale(1) translateY(0);
}

.app-alert-card.app-alert-danger { border-color: var(--color-danger); }
.app-alert-card.app-alert-warning { border-color: var(--color-warning); }
.app-alert-card.app-alert-success { border-color: var(--color-success); }

.app-alert-icon {
    font-size: 32px;
    margin-bottom: 12px;
    line-height: 1;
}

.app-alert-message {
    color: var(--text-main);
    font-size: 14px;
    line-height: 1.55;
    margin-bottom: 22px;
    white-space: pre-line;
}

.app-alert-btn {
    background: linear-gradient(45deg, #00f3ff, #ff007f);
    border: none;
    border-radius: 8px;
    padding: 10px 28px;
    font-size: 13px;
    font-weight: 700;
    color: #09090d;
    cursor: pointer;
    transition: filter var(--transition-speed);
}

.app-alert-btn:hover {
    filter: brightness(1.1);
}

.app-alert-actions {
    display: flex;
    justify-content: center;
    gap: 12px;
}

.app-alert-btn-secondary {
    background: var(--bg-inner);
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.app-alert-btn-secondary:hover {
    filter: none;
    border-color: var(--text-muted);
}