.herramienta-container {
    max-width: 800px;
    margin: 50px auto;
    padding: 0 20px;
}

.herramienta-header {
    text-align: center;
    margin-bottom: 40px;
}

.herramienta-header h1 {
    font-size: 2.2rem;
    margin-bottom: 12px;
    font-weight: 800;
}

.herramienta-header p {
    color: #94a3b8;
    font-size: 1rem;
    max-width: 550px;
    margin: 0 auto;
}

.panel-herramienta {
    background: #1e293b;
    border: 1px solid #334155;
    padding: 30px;
    border-radius: 14px;
}

/* Zona Drop/Arrastre */
.drop-zone {
    border: 2px dashed #475569;
    border-radius: 10px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    background: rgba(30, 41, 59, 0.5);
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.drop-zone i {
    font-size: 3rem;
    color: #8b5cf6; /* Violeta */
    display: block;
    margin-bottom: 15px;
}

.drop-zone .texto-principal {
    color: #e2e8f0;
    font-size: 1.1rem;
    font-weight: 600;
    display: block;
    margin-bottom: 5px;
}

.drop-zone .texto-secundario {
    color: #64748b;
    font-size: 0.85rem;
}

/* Lista de imágenes cargadas */
.lista-archivos {
    margin-top: 25px;
    display: none;
    border-top: 1px solid #334155;
    padding-top: 20px;
}

.lista-archivos h4 {
    color: #94a3b8;
    font-size: 0.95rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.contenedor-items {
    list-style: none;
    padding: 0;
    margin: 0;
}

.item-imagen {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: #0f172a;
    border: 1px solid #334155;
    border-radius: 8px;
    margin-bottom: 10px;
}

.item-imagen-info {
    display: flex;
    align-items: center;
    gap: 12px;
    overflow: hidden;
}

.item-imagen-info i {
    color: #8b5cf6;
    font-size: 1.2rem;
}

.item-imagen-nombre {
    color: #f1f5f9;
    font-size: 0.95rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 400px;
}

/* Botones de acción */
.item-imagen-acciones {
    display: flex;
    gap: 6px;
}

.btn-orden {
    background: #1e293b;
    border: 1px solid #334155;
    color: #cbd5e1;
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
}

.btn-orden:hover:not(:disabled) {
    background: #334155;
    color: #fff;
}

.btn-eliminar {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: #ef4444;
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
}

.btn-eliminar:hover {
    background: #ef4444;
    color: #fff;
}

/* Botón de Procesamiento */
.btn-procesar-pdf {
    width: 100%;
    margin-top: 20px;
    background: #8b5cf6;
    color: white;
    border: none;
    padding: 14px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    transition: background 0.2s ease;
}

.btn-procesar-pdf:hover:not(:disabled) {
    background: #7c3aed;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.spin {
    display: inline-block;
    animation: spin 1s linear infinite;
}