body { background-color: #f1f3f6; font-family: 'Inter', sans-serif; }
.converter-card { border: none; border-radius: 24px; box-shadow: 0 10px 40px rgba(0,0,0,0.08); background: white; }

/* Área de Drag and Drop */
#drop-area {
    border: 2px dashed #0d6efd;
    border-radius: 15px;
    padding: 40px;
    text-align: center;
    background: #f8fbff;
    transition: all 0.3s ease;
    cursor: pointer;
}
#drop-area.highlight { background: #e7f1ff; border-color: #0a58ca; }

.ad-slot { background: #e9ecef; border: 1px solid #dee2e6; color: #adb5bd; display: flex; align-items: center; justify-content: center; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 1px; }