/* Estilos generales */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f4f6fb;
    margin: 0;
    padding: 0;
    color: #333;
}

/* Encabezado tipo landing */
.hero {
    background: linear-gradient(135deg, #4CAF50, #2196F3);
    color: white;
    text-align: center;
    padding: 60px 20px;
    border-bottom-left-radius: 40px;
    border-bottom-right-radius: 40px;
}

.hero h1 {
    margin: 0;
    font-size: 2.5rem;
}

.hero p {
    margin-top: 10px;
    font-size: 1.2rem;
}

/* Contenedor del grid */
.contenedor {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
}

/* Grid de tarjetas */
.grid-menu {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

/* Tarjetas */
.card {
    background: white;
    padding: 20px;
    border-radius: 20px;
    box-shadow: 0px 4px 12px rgba(0, 0, 0, 0.1);
    text-decoration: none;
    color: #333;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card h2 {
    margin: 0 0 10px;
    font-size: 1.5rem;
    color: #2196F3;
}

.card p {
    margin: 0;
    font-size: 1rem;
    color: #555;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0px 8px 20px rgba(0, 0, 0, 0.15);
}

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    margin-top: 40px;
    background: #eee;
    border-top: 2px solid #ddd;
}

/* Estilos de formulario */
form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-group {
    text-align: left;
}

input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 8px;
}

.btn {
    background: #2196F3;
    color: white;
    padding: 12px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s;
}

.btn:hover {
    background: #0b7dda;
}

.mensaje {
    margin-top: 15px;
    font-weight: bold;
}

/* Ajuste para botones dentro de las tarjetas */
.card a.btn {
    display: inline-block;
    /* Para que se comporte como botón */
    margin-top: 15px;
    /* Espacio con respecto al texto anterior */
    text-decoration: none;
    /* Quitar subrayado */
    text-align: center;
    /* Centrar texto */
}

/* Opcional: mejorar apariencia del párrafo */
.card p {
    margin-bottom: 10px;
    /* Un poco de espacio antes del botón */
}

select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 8px;
}

input[type="radio"],
input[type="checkbox"] {
    margin-right: 5px;
}
input[type="file"] {
    border: none;
}

.error {
    color: red;
    font-size: 0.9rem;
    display: block;
    margin-top: 5px;
}

/* =========================================================
   MÓDULO E-COMMERCE: estilos adicionales (no intrusivos)
   Pégalo al FINAL de estilos.css
   ========================================================= */

/* Grid de productos */
.productos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-top: 12px;
}

/* Tarjeta de producto */
.producto-card {
    background: #fff;
    border: 1px solid #eee;
    border-radius: 14px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
    transition: transform .15s ease, box-shadow .15s ease;
}

.producto-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.08);
}

.producto-card img {
    width: 100%;
    height: 140px;
    object-fit: cover;
    border-radius: 10px;
    background: #f2f2f2;
    /* fallback si no hay imagen */
}

.producto-card h3 {
    margin: 4px 0 0;
    font-size: 1rem;
    font-weight: 600;
}

.producto-precio {
    margin: 0;
    font-weight: 700;
}

/* Botones específicos del carrito (respetan tu .btn existente) */
.btn.secundario {
    background: #f0f0f0;
    color: #333;
}

.btn.secundario:hover {
    background: #e3e3e3;
}

.btn.eliminar {
    background: #ef5350;
    color: #fff;
}

.btn.eliminar:hover {
    background: #d32f2f;
}

/* Lista del carrito */
#carrito {
    list-style: none;
    padding-left: 0;
    margin: 0 0 12px 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

#carrito li {
    background: #fafafa;
    border: 1px solid #eee;
    border-radius: 10px;
    padding: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

/* Info y acciones dentro del item del carrito */
.item-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.item-acciones {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Resumen del carrito */
.carrito-resumen {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-top: 8px;
}

#total {
    font-weight: 700;
}

#mensajeCarrito {
    margin: 8px 0;
    color: #666;
}

/* Nota opcional en la sección de productos */
.nota-img {
    font-size: .9rem;
    color: #777;
    margin-top: 8px;
}

/* ====== Módulo 9 (IDs dinámicos) ====== */
.mod9-toolbar {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 12px;
    margin: 16px 0;
}

.mod9-badge {
    background: #e8f3ff;
    border: 1px solid #cfe6ff;
    color: #0b4d9c;
    padding: 6px 10px;
    border-radius: 10px;
    font-size: .9rem;
}

.mod9-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.mod9-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.mod9-group input {
    padding: 10px 12px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
}

.mod9-actions {
    grid-column: 1 / -1;
    display: flex;
    gap: 10px;
    margin-top: 8px;
}

@media (max-width: 800px) {
    .mod9-form {
        grid-template-columns: 1fr;
    }
}


/* ====== Módulo 10 (DataTables) ====== */
.mod10-toolbar {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 12px;
    margin: 16px 0;
}

.mod10-badge {
    background: #e8f3ff;
    border: 1px solid #cfe6ff;
    color: #0b4d9c;
    padding: 6px 10px;
    border-radius: 10px;
    font-size: .9rem;
}

.table-responsive {
    overflow-x: auto;
}


/* ====== Módulo 11 (Drag & Drop) ====== */
.mod11-toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    justify-content: flex-end;
    margin: 16px 0;
}

.mod11-badge {
    background: #e8f3ff;
    border: 1px solid #cfe6ff;
    color: #0b4d9c;
    padding: 6px 10px;
    border-radius: 10px;
    font-size: .9rem;
}

.mod11-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 10px;
}

.mod11-col h3 {
    margin: 0 0 8px;
}

.mod11-lista {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
}

.mod11-item {
    background: #fff;
    border: 1px solid #eee;
    border-radius: 12px;
    padding: 12px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, .06);
    cursor: grab;
    display: flex;
    flex-direction: column;
    gap: 4px;
    transition: transform .15s ease, box-shadow .15s ease;
}

.mod11-item:active {
    cursor: grabbing;
}

.mod11-item.dragging {
    opacity: .8;
    transform: scale(.98);
    box-shadow: 0 6px 14px rgba(0, 0, 0, .12);
}

.mod11-item-titulo {
    font-weight: 700;
}

.mod11-item-desc {
    color: #666;
    font-size: .95rem;
}

.mod11-dropzone {
    background: #fafcff;
    border: 2px dashed #cfe6ff;
    border-radius: 14px;
    padding: 12px;
    margin-bottom: 14px;
}

.mod11-dropzone-titulo {
    font-weight: 700;
    margin-bottom: 8px;
    color: #0b4d9c;
}

.mod11-dropzone.drag-over {
    background: #f0f7ff;
}

.mod11-sortable {
    list-style: none;
    padding-left: 0;
    margin: 12px 0 0 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.mod11-sortable-item {
    background: #fff;
    border: 1px solid #eee;
    border-radius: 12px;
    padding: 10px;
    cursor: grab;
    box-shadow: 0 2px 6px rgba(0, 0, 0, .05);
}

.mod11-sortable-item.dragging {
    opacity: .85;
    transform: scale(.99);
}

@media (max-width: 900px) {
    .mod11-layout {
        grid-template-columns: 1fr;
    }
}

input[type="date"] {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 8px;
    width: 100%;
}


/* ====== Módulo 12 (Múltiples Pestañas) ====== */
.pestanas-links {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 20px;
}

.pestanas-links .btn {
    display: inline-block;
    text-align: center;
    padding: 12px 20px;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
}

.pestanas-links .btn:hover {
    background: #1769aa;
    color: #fff;
}

/* ====== Módulo 13 (Formulario Multipaso) ====== */
.form-step {
    display: none;
    /* Todos ocultos por defecto */
    animation: fadeIn 0.4s ease-in-out;
}

.form-step.active {
    display: block;
    /* Solo el paso activo */
}

.form-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
}

.form-navigation .btn {
    min-width: 120px;
}

.input-error {
    border: 2px solid red !important;
    background: #ffecec;
}

#mensajeMultipaso {
    margin-top: 15px;
    font-weight: bold;
}

/* Animación para transición de pasos */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ====== Módulo Cadenas (Laboratorio) ====== */
.mod-cad-toolbar {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 12px;
    margin: 16px 0;
}

.mod-cad-badge {
    background: #fff6e6;
    border: 1px solid #ffd699;
    color: #a35f00;
    padding: 6px 10px;
    border-radius: 10px;
    font-size: .9rem;
}

.mod-cad-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.mod-cad-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.mod-cad-group textarea,
.mod-cad-group input,
.mod-cad-group select {
    padding: 10px 12px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
}

.mod-cad-resultados {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
    margin-top: 8px;
}

.resultado-box {
    background: #0b0b0b;
    color: #e8f2ff;
    border-radius: 10px;
    padding: 12px;
    min-height: 60px;
    overflow-x: auto;
}

.mod-cad-historial {
    list-style: none;
    padding-left: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mod-cad-historial li {
    background: #fafafa;
    border: 1px solid #eee;
    border-radius: 10px;
    padding: 10px;
}

@media (max-width: 900px) {
    .mod-cad-form {
        grid-template-columns: 1fr;
    }
}

/* Utilidades comunes */
.oculto {
    display: none !important;
}

.panel {
    background: #fafafa;
    border: 1px solid #eee;
    border-radius: 10px;
    padding: 10px;
    margin-top: 8px;
}

.spinner {
    padding: 8px 12px;
    border-radius: 8px;
    background: #fff6e6;
    border: 1px solid #ffd699;
    color: #a35f00;
    display: inline-block;
}

.img-wrap {
    margin-top: 8px;
    min-height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .5);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: #fff;
    border-radius: 12px;
    padding: 16px;
    min-width: 280px;
    max-width: 420px;
    display: grid;
    gap: 10px;
}

.modal-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}